Answer:
5 mol H₂. this is the answer bro all the best for your test/exam
.PART B:
If 7.50 mL of 0.125 M HCl are added to 100 mL of the original buffer . . .
What is the concentration of NH3 in the buffer *after* the addition of HCl?
[Choose], 0.140 M, 0.148 M, 9.28, 0 M, 0.00938 M, 0.131 M, 4.80, 7.00, 0.159 M, 9.21, 8.11
What is the concentration of NH4Cl in the buffer *after* the addition of HCl?
[Choose], 0.140 M, 0.148 M, 9.28, 0 M, 0.00938 M, 0.131 M, 4.80, 7.00, 0.159 M, 9.21, 8.11
What is the pH of the buffer solution *after* the addition of HCl?
[Choose], 0.140 M, 0.148 M, 9.28, 0 M, 0.00938 M, 0.131 M, 4.80, 7.00, 0.159 M, 9.21, 8.11
After addition of HCl in the equation, pH = 9.21 and After addition of NaOH in the solution, pH = 9.31 .
Given the buffer contains 50 mL of 0.3 M NH₃
therefore moles of NH₃ = 50 mL × 0.3 mol / 1000 mL
= 0.0150 moles.
similarly moles of NH₄Cl = 0.015 moles.
The addition of 7.5 mL of 0.125 M HCl = 7.5 mL × 0.125 mol / 1000 mL
= 9.375 × 10⁻⁴ moles of HCl.
The added HCl will react with NH₃ to form NH₄Cl
NH₃ + HCl 1 NH₄Cl
initial 0.015 0.0009375 0.015
change -0.0009375 - 0.0009375 + 0.0009375
final 0.0140625 0 0.0159375
The final volume of the solution = 100 mL + 7.5 mL = 107.5 mL
= 0.1075 L
Therefore the concentration of NH₃ after addition of HCl = mol / L
= 0.0140625 mol / 0.1075 L
= 0.131 M
similarly the conc of NH₄Cl after addition of HCl = mol / L
= 0.0159375 mol / 0.1075 L
= 0.148 M
By Henderson equation,
pOH = pKb + log [salt/base]
= 4.74 + log [0.148 / 0.131]
= 4.74 + 0.053
= 4.793
pH = 14 - pOH = 14 - 4.793
= 9.21
The addition of 7.5 mL of 0.125 M NaOH = 7.5 mL × 0.125 mol / 1000 mL
= 9.375 × 10⁻⁴ moles of NaOH.
The added NaOH will react with NH₄Cl to form NH₃
NH₄Cl + NaOH 1 NH₃ + NaCl + H₂O
initial 0.015 0.0009375 0.015
change -0.0009375 - 0.0009375 + 0.0009375
final 0.0140625 0 0.0159375
The final volume of the solution = 100 mL + 7.5 mL = 107.5 mL
= 0.1075 L
Therefore the concentration of NH₃ after addition of NaOH = mol / L
= 0.0159375 mol / 0.1075 L
= 0.148 M
similarly the concentration of NH₄Cl after addition of NaOH = mol / L
= 0.0140625 mol / 0.1075 L
= 0.131 M
By Henderson equation,
pOH = pKb + log [salt/base]
= 4.74 + log [0.131 / 0.148]
= 4.74 - 0.053
= 4.69
pH = 14 - pOH = 14 - 4.693
= 9.31
Thus
After addition of HCl in the equation :
[NH₃] = 0.131
[NH₄Cl] = 0.148
pH = 9.21
After addition of NaOH in the solution :
[NH₃] = 0.148
[NH₄Cl] = 0.131
pH = 9.31
Buffer solution :A buffer is a solution that can resist changing its pH when acidic or basic ingredients are added. It can neutralize small amounts of added acid or base, maintaining a relatively stable pH in the solution. This is significant for processes and additionally responses which require explicit and stable pH ranges.
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Gravity is a (n) _____________ between objects and depends on an object's size and their distance apart.
Gravity is a (n) force between objects and depends on an object's size and their distance apart.
Gravitational force is the attractive that exist between all object with mass an object with mass attracts another object with mass the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects
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If the pressure of a gas increases, but temperature and number stay
constant, then the volume of the gas must.
increase
decrease
has no change
unable to tell
According to Boyle's law, if the pressure of a gas increases, but temperature and number stay constant, then the volume of the gas must decrease.
Boyle's law is defined as an experimental gas law which describes how the pressure of the gas decreases when the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains constant.
Mathematically, it can be stated as,
P∝1/V or PV=K. The equation states that the product of of pressure and volume is constant for a given mass of gas and the equation holds true as long as temperature is constant.
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A force can act directly on an object . . .?
The 45-degree line in the Keynesian model represents:
The 45-degree line in the Keynesian model represents the equilibrium level of income or output.
In the Keynesian model, the 45-degree line represents the equilibrium level of income or output. It shows the points where aggregate expenditure (AE) equals aggregate output (Y). The line is called the 45-degree line because it represents the points where AE and Y are equal, and at these points, the AE line intersects the 45-degree line at a 45-degree angle.
The Keynesian model assumes that in the short run, aggregate expenditure is the primary determinant of output, and changes in aggregate expenditure lead to changes in income or output. When AE is greater than Y, there is an unplanned decrease in inventories, leading to an increase in production and income. Conversely, when AE is less than Y, there is an unplanned increase in inventories, leading to a decrease in production and income.
The 45-degree line helps to illustrate the equilibrium level of income or output in the Keynesian model.
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The 45-degree line in the Keynesian model represents the equilibrium level of output, which occurs when the total amount of goods and services produced in the economy equals the total amount of goods and services demanded by consumers, firms, and the government.
The Keynesian model is an economic model that was developed by John Maynard Keynes, a British economist. This model emphasizes the role of government intervention in the economy, particularly during times of economic downturn or recession.
The 45-degree line is drawn at a 45-degree angle on a graph that plots aggregate demand and aggregate supply. This line represents the point at which the total amount of goods and services demanded equals the total amount of goods and services produced. At this point, the economy is said to be in equilibrium.
In the Keynesian model, the government plays an important role in ensuring that the economy remains in equilibrium. During times of economic downturn or recession, the government may use fiscal policy to stimulate demand for goods and services.
This can be done by increasing government spending, cutting taxes, or both. By increasing demand for goods and services, the government can help to stimulate economic growth and reduce unemployment.
Overall, the 45-degree line in the Keynesian model represents the equilibrium level of output, which occurs when the total amount of goods and services produced equals the total amount of goods and services demanded.
This line is an important tool for understanding the role of government intervention in the economy, particularly during times of economic downturn or recession.
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in which type of reflection an image is formed?
Answer:
Regular reflection
Explanation:
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a compound is found to contain 53.70% iron and 46.30% sulfur. Find The Empirical Formula Of A Compound Containing 53.70% Iron And 46.30% Sulfur
Fe2S3 is The Empirical Formula Of A Compound Containing 53.70% Iron And 46.30% Sulfur.
Fe = 0.961 mol and S = 1.44 mol, Now divide them to get lowest empirical formula. When the subscripts in a chemical formula represent the simplest ratio of the kinds of atoms in the compound, the formula is called an empirical formula.
Most ionic compounds are described with empirical formulas. A molecular formula describes the actual numbers of atoms of each element in a molecule. A compound that contains ions and is held together by ionic bonds is called an ionic compound. The periodic table can help us recognize many of the compounds that are ionic:
When a metal is combined with one or more nonmetals, the compound is usually ionic. This guideline works well for predicting ionic compound formation for most of the compounds typically encountered in an introductory chemistry course. However, it is not always true (for example, aluminum chloride, AlCl3, is not ionic).
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Two atoms of cesium (Cs) can form a $\mathrm{C}_2$ molecule. The equilibrium distance between the nuclei in a $\mathrm{C}_2$. molecule is $0.447 \mathrm{~nm}$. Calculate the moment of inertia about an axis through the center of mass of the two nuclei and perpendicular to the line joining them. The mass of a cesium atom is $2.21 \times 10^{-25} \mathrm{~kg}$.
The moment of inertia about the axis through the center of mass of the two nuclei is approximately $2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²}$.
The moment of inertia of a diatomic molecule about an axis perpendicular to the line joining the nuclei can be calculated using the formula $I = 2 \mu R²$, where $\mu$ is the reduced mass of the system and $R$ is the equilibrium distance between the nuclei.
The reduced mass $\mu$ is given by $\mu = \frac{m_1 m_2}{m_1 + m_2}$, where $m_1$ and $m_2$ are the masses of the individual atoms.
Substituting the given values, we have
$\mu = \frac{(2.21 \times 10⁻²⁵ \mathrm{~kg})²}{2(2.21 \times 10⁻²⁵ \mathrm{~kg})}
= 2.21 \times 10⁻²⁵ \mathrm{~kg}$.
Then, using the equation for moment of inertia, $I = 2 \mu R²$, we have $I = 2(2.21 \times 10⁻²⁵ \mathrm{~kg})(0.447 \mathrm{~nm})² = 2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²]$.
Therefore, the moment of inertia about an axis through the center of mass of the two nuclei and perpendicular to the line joining them is approximately $2.95 \times 10⁻⁴⁵ \mathrm{~kg \cdot m²}$.
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if gas clouds can be in atomic, ionic, or molecular hydrogen phase, rank these cloud phases in order of coldest to warmest
The coldest phase of gas clouds is the molecular hydrogen phase, followed by the atomic hydrogen phase.
The warmest phase is the ionic hydrogen phase, which has the highest temperature due to the presence of charged particles. In terms of gas cloud phases consisting of hydrogen, you can rank them from coldest to warmest as follows:
1. Molecular hydrogen phase
2. Atomic hydrogen phase
3. Ionic hydrogen phase
Molecular hydrogen clouds are the coldest due to the presence of H2 molecules. Atomic hydrogen clouds are warmer with individual H atoms, and ionic hydrogen clouds are the warmest as they contain ionized H+ ions.
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Hydrogen gas cloud phases can be ranked from coldest to warmest as follows: molecular hydrogen, atomic hydrogen, and ionic hydrogen.
1. Molecular hydrogen phase: In this phase, hydrogen gas is in the form of H2 molecules. It is the coldest phase due to the low temperatures needed to maintain these stable molecules. Molecular hydrogen gas clouds are typically found in the interstellar medium and can have temperatures as low as 10-20 Kelvin.
2. Atomic hydrogen phase: In the atomic hydrogen phase, hydrogen gas exists as individual H atoms. The temperatures in this phase are higher than in the molecular phase but still relatively cool, ranging from about 100 to 1,000 Kelvin.
This phase is commonly found in the outer regions of galaxies where it forms a neutral hydrogen layer known as the "atomic hydrogen envelope."
3. Ionic hydrogen phase: This is the warmest phase, in which hydrogen gas is ionized, meaning the electrons are stripped from the hydrogen atoms, forming a plasma.
Temperatures in this phase can reach over 10,000 Kelvin. The ionic phase is prevalent in areas with high energy radiation, such as in the vicinity of young, hot stars or supernova remnants.
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Which types of molecules will be in the in the beaker
after the reaction?
select one:
Answer:
H20 only
Explanation:
It's because that When a chemical forms, It turns into a product. The product can't just float away, but byproducts can.
3. What two elements have the same number of energy levels (rings)?
Answer:
Lithium and beryllium.
Explanation:
I need help ASAP 10 points
Answer:
the sun beams down on the pool and heats it up top to bottom the deeper the colder
2C2H6: How many atoms for each element are in the formula? C= H=
Answer:
C=4 H=12
Explanation:
the 2 in front of the equation tells how many atoms there are the C2 and H6 tells you how much is in each atom, multiply to get the total
TRUE OR FALSE
Astronomers use spectroscopes to identify elements in stars because each element produces
unique emission spectrum
Answer:
True!
Explanation:
A spectrum is simply a chart or a graph that shows the intensity of light being emitted over a range of energies. Have you ever seen a spectrum before? Probably. Nature makes beautiful ones we call rainbows. Sunlight sent through raindrops is spread out to display its various colors (the different colors are just the way our eyes perceive radiation with slightly different energies).
Hope i helped!
An organism's genetic material is called its
Answer:
Genome
Explanation:
What phenomenon in nature do scientists use to define the length of a meter? Why is this a better definition than “the length of a standard meter stick”?
Answer:
The natural phenomenon used to describe the length of a meter is the speed of light. The length of a meter is the length a light path travels in 1/(299792458) seconds through a vacuum.
The definition is better due to the uncertainty involved in the use of the length of a standard meter stick because the length of the meter stick could change due to atmospheric conditions from place to place
Explanation:
identify the acid associated with each conjugate base. nh3 choose... I⁻ ___
SO4²⁻ ___
Cl⁻ ___ OH⁻ ___
F⁻ ___
a. HF
b. Water
c. Sulfuric acid d. Hydronium ion e. HCI f. НІ g. Bisulfate ion
The acid associated with \(NH_3\) is \(NH_4^+\), with I- is HI, with \(SO_4^{2-}\) is \(HSO_4^-\), with Cl- is HCl, with OH- is \(H_2O\), and with F- is HF.
1. NH3: It is a base that accepts a hydrogen ion (H+) from an acid. \(NH_3 + H^+ --> NH_4^+\). The acid associated with \(NH_3\) is \(NH_4^+\).
2. I-: is a base that accepts a hydrogen ion (H+) from an acid. \(I^- + H^+ --> HI\) . The acid associated with I- is HI.
3. \(SO_4^{2-}\) : is a base that accepts a hydrogen ion (H+) from an acid. \(SO_4^{2-} + H^+ --> HSO_4^-\). The acid associated with \(SO_4^{2-}\) is \(HSO_4^-\).
4. Cl-: is a base that accepts a hydrogen ion (H+) from an acid. Its conjugate acid is the species formed when Cl- accepts a hydrogen ion (H+). \(Cl^- + H^+ --> HCl\). The acid associated with Cl- is HCl.
5. OH-: It is a base that accepts a hydrogen ion (H+) from an acid. Its conjugate acid is the species formed when OH- accepts a hydrogen ion (H+). \(OH^- + H^+ --> H_2O\). The acid associated with OH- is \(H_2O\).
6. F-: It is a base that accepts a hydrogen ion (H+) from an acid. \(F^- + H^+ --> HF\). The acid associated with F- is HF.
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A 322 g sample of lead (specific heat = 0.138 J/gºC) is placed into 264 g of water at 25°C. If
the system's final temperature is 46°C, what was the initial temperature of the lead?
Answer:
-6.31°C
Explanation:
To solve this problem, we can use the principle of heat transfer:The heat gained by the lead (q_lead) equals the heat lost by the water (q_water).The formula to calculate heat transfer is:
q = m * c * ΔTWhere:
q = heat transfer
m = mass
c = specific heat
ΔT = change in temperatureFor the lead:
q_lead = m_lead * c_lead * ΔT_leadFor the water:
q_water = m_water * c_water * ΔT_waterGiven values:
m_lead = 322 g
c_lead = 0.138 J/gºC
ΔT_lead = T_final - T_initial_lead (unknown)
m_water = 264 g
c_water = 4.18 J/gºC (specific heat of water)
ΔT_water = T_final - T_initial_water = 46°C - 25°C = 21°CSince the heat gained by the lead is equal to the heat lost by the water, we can set up the equation:
m_lead * c_lead * ΔT_lead = m_water * c_water * ΔT_waterSubstituting the given values:
322 g * 0.138 J/gºC * ΔT_lead = 264 g * 4.18 J/gºC * 21°CSimplifying the equation:
44.436 J/ºC * ΔT_lead = 2325.12 J/ºCDividing both sides of the equation by 44.436 J/ºC:
ΔT_lead = 2325.12 J/ºC / 44.436 J/ºC ≈ 52.31°CFinally, we can find the initial temperature of the lead:
T_initial_lead = T_final - ΔT_lead
T_initial_lead = 46°C - 52.31°C ≈ -6.31°CTherefore, the initial temperature of the lead was approximately -6.31°C.
3. What is the net ionic equation for the reaction between aqueous sodium hydroxide and aqueous nitric acid? a) HNO 3
(aq)+ −
NaOH(aq)→H 2
O(l)+NaNO 3
(aq) b) Na +
(aq)+OH −
(aq)+H +
(aq)+NO 3
(aq)→H 2
O(l)+Na +
(aq)+NO 3
−
(aq) c) HNO 3
(aq)+OH ′
(aq)→H 2
O(l)+NO 3
(aq) d) H +
(aq)+OH −
(aq)→H 2
O(l) e) Na +
(aq)+NO 3
−
(aq)→NaNO 3
(aq)
The complete ionic equation is:H+(aq) + NO3-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + NO3-(aq) + H2O(l)
The spectator ions present in the above equation are Na+ and NO3-.
Therefore, the net ionic equation is:H+(aq) + OH-(aq) → H2O(l)
Hence, the correct answer is option (c).
The correct net ionic equation for the reaction between aqueous sodium hydroxide and aqueous nitric acid is given by option (c),
HNO3(aq) + OH-(aq) → H2O(l) + NO3-(aq).
Net ionic equation The net ionic equation represents the complete ionic equation by excluding the spectator ions present in it.
Spectator ions are those ions which are present on both the sides of the chemical equation and do not take part in the reaction.
The net ionic equation is useful in determining the ions which actually react to form the final product.For the given reaction, the balanced ionic equation is:
HNO3(aq) + NaOH(aq) → NaNO3(aq) + H2O(l).
The complete ionic equation is:
H+(aq) + NO3-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + NO3-(aq) + H2O(l)
The spectator ions present in the above equation are Na+ and NO3-.
Therefore, the net ionic equation is:H+(aq) + OH-(aq) → H2O(l)
Hence, the correct answer is option (c).
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Molarity of Kool Aid solutions can be calculated by comparing the concentrations of Kool Aid powder and sugar added to a given volume of water. The molar mass of Kool Aid will be the same as that of sugar for our purpose. The molecular formula for sugar is C12H22O11- Your objective for this lab will be to calculate the molarity of Kool Aid desired based on package directions. You will then be provided two concentrated Kool Aid solutions. You will use dilution calculations to determine the amount of water and concentrated solution you will need in order to prepare 65 mL of the desired molarity.
Calculate the molarity of Kool Aid desired based on the following information from the package directions.
1 package Kool Aid powder = 4. 25 grams 1 cup sugar = 192. 00 grams
2. 00 quarts of water (1. 06 quarts = 1 liter)
The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.
To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:
Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)
= 144.12 + 22.22 + 176.00
= 342.34 g/mol
Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:
Number of moles of Kool Aid powder = Mass / Molar mass
= 4.25 g / 342.34 g/mol
≈ 0.0124 mol
Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:
Number of moles of sugar = Mass / Molar mass
= 192.00 g / 342.34 g/mol
≈ 0.5612 mol
Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:
Volume of water = 2.00 quarts * (1.06 liters / 1 quart)
= 2.12 liters
To find the molarity, we use the formula:
Molarity (M) = Number of moles / Volume (in liters)
Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L
≈ 0.286 M
To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.
Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:
(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:
(C M)(V mL) = (0.286 M)(65 mL)
V mL = (0.286 M)(65 mL) / C M
So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.
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how many electrons are in the outermost shell of the al3 ion in its ground state? group of answer choices 6 2 3 8
Aluminum ion (Al3+) in its ground state has 2 electrons in its outermost shell. What are ions? Ions are particles with a negative or positive charge that are produced as a result of a loss or gain of electrons.
As a result, they are referred to as positively or negatively charged ions. The negative ion, called an anion, is formed when an atom gains electrons. A positive ion, on the other hand, is formed when an atom loses electrons.What is Al3+?Aluminum, a chemical element, has 13 protons and 13 electrons.
The number of electrons in the outermost shell of an Al atom is 3. When an aluminum atom loses all three of its valence electrons, it becomes a positively charged aluminum ion. The Al3+ ion is formed in this way. Aluminum is an important industrial element due to its high strength-to-weight ratio, low cost, and excellent thermal conductivity. It is frequently utilized in alloys, which are formed by combining aluminum with other metals such as copper, magnesium, and zinc. Aluminum is used to make a wide range of items, from cars to spacecraft. Therefore, the correct answer to this question is: 2 electrons.
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Which refers to substances that are complex molecules and contain carbon atoms bonded to hydrogen atoms?
o
O organic
O inorganic
ionic
metallic
Answer:
organic
Explanation:
Organic substances are those which contains covalently linked carbon to hydrogen (C-H) bonds in their structure. In other words, organic compounds or substances are uniquely composed of carbon and hydrogen atoms covalently linked together.
These substances usually contain a long chain of these bonds, hence, making them complex. Therefore, according to this question, substanves that are complex molecules and contain carbon atoms bonded to hydrogen atoms are referred to as ORGANIC SUBSTANCES.
Answer:
A. Organic
Explanation:
Can someone help me please
Answer:
Strange question. All the answers are D
Explanation:
I don't exactly know how you should answer this. I can find the charge on Chromium. The only hope is that they are all the same.
[Cr(OH)_-6]^-3
x - 6 = -3 Add 6
x = -3 + 6
x = 3
======
CrO4 ^-2
x - 4*2 = - 2 add 8
x = -2 + 8
x = 6
================
Water has no effect on the charge. The chromium has a charge of +2
why does the chloride ion have a -1 charge? a chlorine atoms share electrons. b chlorine atoms have no electrons. c chlorine atoms lose an electron. d chlorine atoms gain an electron.
the chloride ion have a -1 charge because (d) chlorine atoms gain an electron.
When there are the same number of protons and electrons, a substance is said to be electrically neutral.
When protons outnumber electrons, something is said to be positively charged.
When there are more electrons than protons, something is said to be negatively charged.
Since the chlorine atom has an atomic number of 17, its protons are equal to its electrons, making it electrically neutral.
However, when the chlorine atom transforms into the chloride ion, it gains an electron, bringing the total number of electrons to more than the total number of protons, making it negatively charged.
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does either or both cis- or trans-[mn(en)2br2] have optical isomers?
Yes, both cis- and trans-[Mn(en)2Br2] can have optical isomers. Because both exhibit optical isomerism due to the presence of chiral ethylenediamine ligands and their respective octahedral coordination geometries.
Isomers are compounds that have the same molecular formula but different structural arrangements. Optical isomers, also known as enantiomers, are a type of stereoisomer characterized by their non-superimposable mirror-image structures.These isomers rotate plane-polarized light in opposite directions, making them optically active. In the case of cis- and trans-[Mn(en)2Br2], the presence of ethylenediamine (en) ligands introduces chirality, allowing for optical isomers to exist. Chirality arises when the metal center has a tetrahedral or octahedral coordination geometry and is bonded to chiral ligands such as ethylenediamine.
For cis-[Mn(en)2Br2], the two ethylenediamine ligands are adjacent to each other, and the compound adopts an octahedral geometry. This arrangement leads to the formation of a pair of enantiomers, which are non-superimposable mirror images of each other.
In the case of trans-[Mn(en)2Br2], the ethylenediamine ligands are opposite each other in an octahedral geometry. This configuration also results in the formation of a pair of enantiomers, with each enantiomer being the mirror image of the other. In summary, both cis- and trans-[Mn(en)2Br2] exhibit optical isomerism due to the presence of chiral ethylenediamine ligands and their respective octahedral coordination geometries.
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consider a 0.65 m solution of c5h5n (kb = 1.7×10-9). mark the major species found in the solution.
The major species in the solution will be the solute C5H5N, which will be present mostly in the undissociated form, and the solvent water.
In a 0.65 m solution of C5H5N, the major species found in the solution would be the solute C5H5N and the solvent water. The solution contains 0.65 moles of C5H5N per liter of solution, which means that it is a concentrated solution. The basicity constant Kb of C5H5N is 1.7×10-9, which means that it is a weak base. In the solution, C5H5N molecules will undergo hydrolysis to form the conjugate acid, H+C5H5N, and hydroxide ions, OH-. However, since C5H5N is a weak base, only a small fraction of it will undergo hydrolysis. Therefore, the major species in the solution will be the solute C5H5N, which will be present mostly in the undissociated form, and the solvent water.
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cis,cis-hexa-2,4-diene draw the molecule on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars.
Hexa-2,4-diene-1,6-diol,cis,cis- Muconic alcohol is the name of this Molecule.
What structure does 2-nitrophenol have?The chemical compound 2,4-Dinitrophenol (often known as 2,4-DNP or simply DNP) has the formula HOC6H3(NO2)2. It smells pleasant and musty and is a yellow, crystalline substance. It is soluble in the majority of organic solvents as well as aqueous alkaline solutions, sublimates, and is volatile with steam.
What is henna, 2 amino-4,6 dinitrophenol?Picric acid is a base that can be made into picramic acid, also known as 2-amino-4,6-dinitrophenol, by neutralizing it with an alcoholic solution of ammonium hydroxide. The resulting solution is then treated with hydrogen sulfide, which causes it to turn red and produce sulfur and red crystals.
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any force that causes an object to move in a circle is called
Answer: Any force that causes an object to move in a circle is called centripetal force.
Shown following are the names of several eras that are used to descried the history of the universe. Rank the eras from left to right in the order in which they occurred from first to last. 1. era of nucleosynthesis - fusion created helium nuclei2. particle era - protons, neutrons both common3. era of nuclei - H, He nuclei and electrons existed, but no neutral atoms4. era of atoms - neutral atoms existed, but not stars5. era of galaxies - stars and galaxies common6. Planck era - all 4 forces operated as one7.electroweak era - 3 forces operated: gravity, strong, electroweak8. GUT era - strong, electroweak forces unite as GUT force
Planck period, GUT era, electroweak era, particle era, nucleosynthesis era, era of nuclei, age of atoms, era of galaxies, from first to last.
What is atom ?
Atoms, which are minuscule bits of matter, are what distinguish each chemical element from the others. A negatively charged core nucleus and one or more orbiting electrons make up an atom. It's possible to see the positively charged, relatively large neutrons and protons that make up the nucleus.
Atoms are the basic building blocks of stuff. Anything that has mass and takes up space is made up of atoms.
The combined masses of the protons, neutrons, and electrons in an atom are known as the atomic mass, commonly referred to as the atomic weight. The weight or mass of an atom is given in atomic mass units.
Although electrons make up a very small portion of the mass of the atomic structure, they are crucial to the chemical events that give rise to molecules. The number of protons plus the number of neutrons can be considered the atomic weight for the majority of uses. Since the amount of neutrons in an atom can change, most elements can have a variety of atomic weights.
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Josh decided to investigate the effect of the reagents listed in Part B of the lab on the cobalt chloride system described on page 60 of the lab manual. Their cobalt chloride solution composed of 0.20 M CoCl2 in 4.0 M NaCl. Identify one reaction they would have observed that to push the reaction either in the forward or reverse direction by filling in the blanks in the statement given below. Identify what phenomenon occurred that caused the equilibrium to shift. Saturated NaCl was added to the solution of 0.20 M CoCl2 in 4.0 M NOLI. a precipitate of copper (11) c. This increased the amount of chl solution, increasing the concentration. This resulted in the equilibrium shifting in the forward direction
The increased amount of \(CoCl_2\) solution, increasing the concentration of \(CoCl_2\). This resulted in the equilibrium shifting in the forward direction due to Le Chatelier's Principle.
The reaction can be written as follows : \(CoCl_2\) (aq) ⇌ \(Co^2+ (aq) + 2Cl^- (aq)\)
When saturated NaCl was added, the concentration of chloride ions in the solution increased, and the reaction shifted to the right. This is because the reaction will shift to the right in the direction that will reduce the concentration of \(Cl^-\) ions, and since NaCl is a source of Cl^-\(Cl^-\) ions, the equilibrium shifts to the right.Learn more about equilibrium shifts: https://brainly.in/question/40922197
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