Answers
Answer:
silver (III) phosphate
Explanation:
Related Questions
Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if th
coefficient is "1."
✓CO₂ +H₂O<—CH3OH +0₂
Answers
Answer: \(\boxed{2}\text{ CO}_{2}+\boxed{4}\text{ H}_{2}\text{O} \longrightarrow \boxed{2} \text{ CH}_{3}\text{OH}+\boxed{3} \text{ O}_{2}\)
Balancing a chemical reaction involves having equal number of atoms of all elements involved in the reaction on both sides of the arrow.
The given unbalanced equation is
CH₃OH + O₂ → CO₂+ H₂O
In this reaction, the number of atoms of oxygen and carbon are equal on both sides. However, the number of hydrogen atoms is greater on the reactants side and lesser on the products side.
Thus, we have to balance the number of hydrogen atoms while also keeping equal the number of atoms of carbon and oxygen.
Thus, the balanced reaction is given as:
2CH₃OH + 3O₂ → 2CO₂+ 4H₂O
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HELP!!!!!! Stacy finds a gun at a crime scene. Which part of the gun should she never touch?
Stacy knows never to touch the
with her hands or any other object so she does not accidentally discharge the weapon.
Answers
Answer:
The trigger
Explanation:
Answer:
she should never touch the triggertriggertriggertritriggertrigger
Explanation:
3. A Wilkinson’s catalyst is widely used in the hydrogenation of alkenes. Show a catalytic cycle, including: i. chemical structure of the catalyst, with complete stereochemistry ii. molecular geometry of catalyst iii. type of reactions involved iv. the appropriate starting material, reagent and solvent v. major and minor end-products vi. all intermediates, for each reaction stated in (iii)
Answers
We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.
What are the steps involved?Here's an overview of the catalytic cycle, including the necessary details:
i. Chemical structure of the catalyst:
Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]
ii. Molecular geometry of the catalyst:
The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.
iii. Type of reactions involved:
The catalytic cycle involves several reactions, including:
Oxidative addition: The rhodium center undergoes oxidative addition, reacting with molecular hydrogen (H2) to form a dihydride intermediate.Alkene coordination: The alkene substrate coordinates to the rhodium center, forming a π-complex.Hydrogenation: The coordinated alkene undergoes hydrogenation, resulting in the addition of hydrogen atoms to the double bond and formation of a metal-alkyl intermediate.Reoxidation: The metal-alkyl intermediate reacts with a hydrogen molecule to regenerate the rhodium dihydride species.iv. Starting material, reagent, and solvent:
The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).
v. Major and minor end-products:
The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.
vi. Intermediates:
The intermediates in the catalytic cycle include:
Rhodium dihydride complex: [RhH2(PPh3)3]Alkene-Rhodium π-complex: [Rh(η2-alkene)(PPh3)3]Metal-alkyl intermediate: [Rh(alkyl)(PPh3)3]These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.
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does moving an object a greater amount of distance always require a greater amount of work? Why or why not?
Answers
Answer:
Yes, moving an object a greater amount of distance always requires a greater amount of work.
Explanation:
Take a look at the formula written below,
W = F x D,
Where W = work, F = Force, D = Distance
You can see the Force and Distance have a multiplication sign between them, indicating that Work is directly proportional to both Force and Distance, or in other words -
Work α Distance
_________________________________________________________
If that is so, an increase in distance should always mean an increase in work, ( vice versa ) and a decrease in distance should always mean a decrease in work ( vice versa ).
How do specialized brown fat cells take advantage of oxidative phosphorylation to generate heat?.
Answers
Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.
oxidative phosphorylation is when in mitochondrion the proton gradient does is the production of ATP from ADP. This depends on the oxidative reaction happening in the mitochondria. During oxidative phosphorylation electrons from NADH and FADH₂ combine with oxygen and then releases the energy from the oxidation or reduction reaction that is used to synthesis of ATP from ADP
Thus, Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.
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The composition of planetary atmospheres is determined in part by the speeds of the molecules of the constituent gases because the faster-moving molecules can reach escape velocity and leave the planet. Calculate the mean speed of CH4 molecules at 77K and 1500K.
Answers
Answer:
At T = 77k, V = 2.69m/a
At T = 1500K, V = 11.86m/s
Explanation:
Hello,
We're required to find the root mean speed (RMS) of a gas and to do that, we'll have to relate the energy of a gas and its kinetic energy
Ek = 3/2 RT
Ek = ½mv²
½mv² = 3/2 RT
Solve for V
MV² = 3RT
V² = 3RT / M
V = √(3RT/M)
V = velocity or speed of the gas
R = ideal gas constant
T = temperature of the gas
M = molarmass mass of the gas
Molar mass of CH4 = 12 + 4 = 16g/mol
At T = 77k
V = √[((3/2) × 77) / 16]
V = √7.216
V = 2.69m/s
At T = 1500K
V = √[((3/2) × 1500) / 16]
V = √140.625
V = 11.86m/s
Which of the following statements about combination reactions is not true?
A magnesium reacts with oxygen to form magnesium oxide
B the reaction of nonmetals with each other forms a molecular compound
C a combination reaction is also called a retrosynthesis
D sodium and chlorine react to form a compound
Answers
Statement C is not true. A combination reaction is not called retrosynthesis.
Retrosynthesis is a term used in organic chemistry to describe the process of planning the synthesis of a complex molecule by breaking it down into simpler precursor compounds. On the other hand, a combination reaction refers to a chemical reaction where two or more substances combine to form a single compound.
Examples of combination reactions include the reactions mentioned in statements A and D, where magnesium reacts with oxygen to form magnesium oxide and sodium reacts with chlorine to form sodium chloride, respectively.
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a tire will burst if the air inside it reaches a pressure greater than 1.4 x 10^3 kpa. at what temperature will the tire burst if it has a volume of 30L and contains 2.5 mol of air? assume that the air behaves as an ideal gas. assuming that these values are representative, do you need to worry about your car tire bursting from overheating of they are in good condition?
Answers
This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.
To determine the temperature at which the tire will burst, we can use the ideal gas law equation:
PV = nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Rearranging the equation to solve for temperature, we have:
T = PV / (nR)
Given that the pressure threshold for bursting is 1.4 x 10^3 kPa, the volume is 30 L, and the number of moles of air is 2.5 mol, we can substitute these values along with the ideal gas constant R = 8.314 J/(mol K) into the equation.
T = (1.4 x 10^3 kPa) * (30 L) / (2.5 mol * 8.314 J/(mol K))
Converting kPa to Pa and L to m^3, and simplifying the equation, we find:
T ≈ 20,993 K
This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.
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(01.01 LC)What is the body of scientific knowledge based on?
Guesses
Mysteries
Observations
Opinions
Answers
The body of scientific knowledge is based on different Observations (Option C).
What does observations mean in the scientific method?Observations in the scientific method are fundamental because it is the first step to raising scientific questions that may be explained through plausible hypotheses. Subsequently, hypotheses must be tested by experimental procedures.
In conclusion, the body of scientific knowledge is based on different Observations (Option C).
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Which of the formulas below correctly represent the ionic compounds of the elements involved? CSCI Al2S3 Na3P MgBr
Answers
The formulas below correctly represent the ionic compounds of the elements involved in CSCI Na3P Al2S3.
For binary ionic compounds, the compounds are named by writing the cation name first, followed by the anion name. For example, KCl, an ionic compound containing K+ and Cl- ions, is called potassium chloride. Consider the electronegativities of two related atoms. The greater the difference, the more ionic the bond.
For a compound as a whole, its polarity can be considered from the configuration of the polar bonds through the molecular conformation. An ionic bond is formed when an electron moves from one atom to another. Ions of different elements can be combined by forming ionic bonds. Cations and anions are formed when atoms lose or gain electrons.
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Light is an example of something that travels in waves.
Light waves come in many different varieties, and can be seen as many different colors. What is the main difference between a light wave that produces the color blue and a light wave that produces the color red?
Answers
Answer:
"Red light has a slightly longer wavelength than blue light. Red light (at one end of the visible spectrum) has a longer wavelength than blue light. However, another way of distinguishing between the different colors of light is by their frequency, that is, the number of waves that pass by a point every second."
Explanation:
Hope his helps:) If so may I have brainliest
What attractive force holds two hydrogen atoms and one oxygen atom
together to make the substance water?
A. Molecules
B. Chemical bonding
O C. Valence electrons
O D. Cations
Answers
Answer:
It is a hydrogen bond but if I had to coose one of thee answers it is b. chemical bonding
Explanation:
a student has a 1 L solution of 2 M HCL and wants to increase the HCL concentration to 3 M
Answers
The student needs to add approximately 83.3 mL of 12 M HCl solution to the existing 1 L of 2 M HCl solution to increase the concentration to 3 M. It is important to handle concentrated acids with caution and follow proper safety procedures.
To increase the concentration of a 1 L solution of 2 M HCl to 3 M, the student needs to calculate the volume of concentrated HCl needed and add it to the existing solution. Here's how the calculation can be done:
Given:
Initial concentration of HCl solution = 2 M
Final concentration desired = 3 M
Initial volume of HCl solution = 1 L
Step 1: Calculate the moles of HCl in the initial solution.
Moles of HCl = Initial concentration × Initial volume = 2 M × 1 L = 2 moles
Step 2: Calculate the moles of HCl needed for the desired concentration.
Moles of HCl needed = Final concentration × Final volume = 3 M × 1 L = 3 moles
Step 3: Calculate the moles of HCl to be added.
Moles of HCl to be added = Moles needed - Moles present = 3 moles - 2 moles = 1 mole
Step 4: Convert the moles of HCl to the required volume of concentrated HCl.
To calculate the volume, we need to know the concentration of the concentrated HCl solution. Assuming it is 12 M, we can use the following formula:
Volume of concentrated HCl = Moles of HCl to be added / Concentration of concentrated HCl
Volume of concentrated HCl = 1 mole / 12 M = 0.0833 L or 83.3 mL
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Which field is not a branch of biology
Botany
Geology
Zoology
Genetics
Answers
Answer:
Geology
Explanation:
Geology is not a branch of biology.
Biology is the study of all forms of lives. Bio - life and logy - study
It consists of studies of plants, animals and micro-organisms. Some of its sub-branches are zoology, botany, genetics, micro-biology e.t.c.
Geology is the study of the earth. It deals with the materials that makes up the earth and how they have evolved through time. some of its sub-disciplines are hydro-geology, stratigraphy, geochemistry e.t.cAnswer:
geology
Explanation: I took the test.
An element has an atomic number of 36, what element is it? Question 4 options: Kr K Se Es
Answers
Answer:
\(\Huge \boxed{\mathrm{Kr}}\)
Explanation:
Krypton is an element in the periodic table with an atomic number of 36.
The symbol for Krypton is Kr.
Answer:
KR.
Explanation:
Use the periodic table for reference:
Researchers investigated the influence of environmental pH on the activity of peroxidase, an enzyme that catalyzes the conversion of hydrogen peroxide to water and oxygen gas. In an experiment, the researchers added a hydrogen peroxide solution containing guaiacol to several identical test tubes and adjusted the solution in each test tube to a different pH. The researchers included the guaiacol because it caused the solutions to change color as the reactions proceeded, which the researchers relied on for measuring reaction rates. Finally, the researchers added the same amount of peroxidase to each test tube and measured the rate of each reaction at 23°C. The results of the experiment are represented in Figure 1. One of the researchers proposes using oxygen gas production to measure reaction rates. Which of the following statements best justifies the use of the proposed modification as a way of creating an appropriate control for the investigation?
O the experiment can be repeated without hydrogen peroxide, which will help eliminate an uncontrolled variable. O the experiment can be repeated without hydrogen peroxide, which will help eliminate an uncontrolled variable. O the experiment can be repeated without peroxidase, which will introduce a second independent variable. O the experiment can be repeated without peroxidase, which will introduce a second independent variable. O the experiment can be repeated without guaiacol, which will reveal the effect of guaiacol on the reaction rates. O the experiment can be repeated without guaiacol, which will reveal the effect of guaiacol on the reaction rates. O the experiment can be repeated without water, which will reveal whether the reaction can occur inside a living cell.
Answers
In studying the influence of environmental pH on peroxidase activity, researchers can repeat the experiment without guaiacol, which will reveal the effect of guaiacol on reaction rates.
The proposal to use the production of gaseous oxygenOne of the investigators' proposal to use oxygen gas production to measure reaction rates leads to a change in the dependent variable.
In the first experiment the dependent variable was the volume of guaiacol and in the second experiment the dependent variable will be oxygen production.
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PLZ HELP I NEED THIS RN!
when the balls reach the bottom of the ramp, which statement will describe their energy?
A. they will have no kinetic energy
B. they will have 100% potential energy
C. they will have 100% kinetic energy
C. they will have different amounts of potential energy
Answers
Answer:
they will have 100% kinetic energy
Explanation:
all the potential energy has been used when it is at the bottom of the ramp
Hydrochloric acid can be prepared using the reaction described by the chemical equation: 2 NaCl(s) + H2SO4(l) ----> 2 HCl(g) + Na2 SO4(s). How many grams of HCl can be prepared from 393 g of H2SO4 and 4.00 moles of NaCl?
Answers
Answer:
145.84 g
Explanation:
2 NaCl(s) + H₂SO₄(l) → 2 HCl(g) + Na₂SO₄(s)To answer this problem first we need to determine the limiting reactant, to do so we convert 393 g of H₂SO₄ into moles using its molar mass:
393 g H₂SO₄ ÷ 98 g/mol = 4.01 mol4.01 moles of H₂SO₄ would react completely with (4.01 * 2) 8.02 moles of NaCl. There are not as many NaCl moles, so NaCl is the limiting reactant.
Now we calculate how many HCl moles are formed, using the number of moles of the limiting reactant and the stoichiometric coefficients of the reaction:
4.00 mol NaCl * \(\frac{2molHCl}{2molNaCl}\) = 4.00 mol HClFinally we convert HCl moles into grams, using its molar mass:
4.00 mol HCl * 36.46 g/mol = 145.84 gAccording to the law of chemical combination, the mass of the element remains the same after the reaction.
The law depends on the following
MassThe correct answer is 145.84g
Before solving the question, we have to find the limiting reagent to the reaction. The compound which decide the production of the reaction is called limiting reagent.
The moles is as follows:-
\(\frac{393g H_2SO_4}{98g/mol}\\\\ = 4.01 mol\)
4.01 moles \(H_2SO_4\) would react with the 2 moles of NaCl.
Hence, \((4.01 * 2 ) = 8.02\)
According to the law the moles of the following.
4.00 mole NaCl * = 4.00 mole HCl
Convert the moles into grams the solution is as follows:-
\(4.00 mol HCl * 36.46 g/mol = 145.84 g\)
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I NEED HELP ASAP!!!!
ITS DUE IN A FEW MINUTES!!!!
Answers
Answer:
The Sun and the planets were born from a cloud of gas and dust called the solar nebula 4.6 billion years ago. The collapse of the solar nebula was most likely triggered by a shock wave from a nearby supernova explosion. The Sun formed in the center, with the planets surrounding it in a thin disk.
Explanation:
Section
1
2
7)
Given the equation representing a reaction:
203Pb + 5921 TECn + on
3
4
5
Which type of reaction is represented by this equation?
6
A)
neutralization
8
-9
B)
polymerization
C)
substitution
10
11
12
13
= 14
- 15
16
-17
D)
transmutation
18
19
20
21
Answers
Answer:
a
Explanation:
neutalize acidity level
What is the molecular formula of each of the following
compounds?
(a) empirical formula CH₂, molar mass = 84 g/mol
(b) empirical formula NH₂Cl, molar mass = 51.5 g/mol
Answers
(a) the molecular formula of the compound is C₆H₁₂.
(b) the molecular formula of the compound is NH₂Cl.
(a) Given the empirical formula CH₂ and a molar mass of 84 g/mol, we need to determine the molecular formula. To do so, we need to find the factor by which the empirical formula needs to be multiplied to achieve the given molar mass.
The empirical formula CH₂ has a molar mass of 14 g/mol (12 g/mol for carbon + 2 g/mol for hydrogen).
To find the factor, we divide the molar mass by the empirical formula mass:
Factor = (molar mass) / (empirical formula mass) = 84 g/mol / 14 g/mol = 6
Therefore, the molecular formula is obtained by multiplying the empirical formula by the factor:
CH₂ × 6 = C₆H₁₂
Thus, the molecular formula of the compound is C₆H₁₂.
(b) Given the empirical formula NH₂Cl and a molar mass of 51.5 g/mol, we follow a similar approach.
The empirical formula NH₂Cl has a molar mass of 51.5 g/mol (14 g/mol for nitrogen + 2 g/mol for each hydrogen + 35.5 g/mol for chlorine).
To find the factor, we divide the molar mass by the empirical formula mass:
Factor = (molar mass) / (empirical formula mass) = 51.5 g/mol / 51.5 g/mol = 1
Therefore, the molecular formula is the same as the empirical formula: NH₂Cl
Hence, the molecular formula of the compound is NH₂Cl.
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10. Electromagnetic waves used to examine broken bones inside the body are called
Answers
The answer to your question are X-Rays.
We use this all the time when we have broken bones in our skeletal system!
Answer:
it would be x-rays
Explanation:
How many atoms are in 5 moles of Lithium?
a
35 atoms
b
3.0 *10^24 mol
c
3.0 * 10^24
d
35 g/mol
Answers
HELP!
True or false: When there are zero lone pairs on the central atom, the shape is
symmetrical (assuming all of the bonds are the same).
Answers
What is the mass of 1.84 mol NaCl? Give your
answer to the correct number of significant
figures. (Molar mass of NaCl = 58.44 g/mol)
1.84 mol NaCl =
Answers
Answer:
108 g
Explanation:
Answer:
answer in picture
Explanation:
HỌ5,42
Homework Answered Due Today, 11:59 PM
.
A 5.60E1 g sample of water at 9.910E1 °C is placed in a constant pressure calorimeter. Then, 2.40E1 g of zinc metal at 2.10E1 °C is
added to the water and the temperature drops to 9.70E1 °C. What is the specific heat capacity of the zinc metal measured in this
experiment?
Answers
The specific heat capacity of the zinc metal, given that 2.40×10¹ g of zinc metal at 2.10×10¹ °C is added to the water is 0.27 J/gºC
How do i determine the specific heat capacity of the zinc?First, we shall obtain the heat absorbed by the water when the zinc metal was added. This is shown below:
Mass of water (M) = 5.60×10¹ gInitial temperature (T₁) = 9.910×10¹ °CFinal temperature (T₂) = 9.70×10¹ °CChange in temperature (ΔT) = 9.70×10¹ - 9.910×10¹ = -2.1 °CSpecific heat capacity of water (C) = 4.184 J/gºC Heat absorbed by water (Q) =?Q = MCΔT
= 5.60×10¹ × 4.184 × -2.1
= -492.0384 J
Now, we shall determine the specific heat capacity of the zinc metal. Details below:
Heat absorbed by water (Q) = -492.0384 JHeat released by metal (Q) = 492.0384 JMass of zinc metal (M) = 2.40×10¹ gInitial temperature (T₁) = 2.10×10¹ °CFinal temperature (T₂) = 9.70×10¹ °CChange in temperature (ΔT) = 9.70×10¹ - 2.10×10¹ = 76 °CSpecific heat capacity (C) = ?Q = MCΔT
492.0384 = 2.40×10¹ × C × 76
492.0384 = 1824 × C
Divide both sides by 1824
C = 492.0384 / 1824
= 0.27 J/gºC
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75 POINTS!!!
Describe the plate movements in a Divergent(Constructive), Convergent (Destructive) and a Transform (Conservative) Plate Margin. (these are also called plate boundaries). Your answer should define these THREE types of margins or boundaries by explaining the type of movement that occurs.
Answers
The type of movement that occurs in the plate movement listed above include the following:
A divergent boundary occurs when two tectonic plates move away from each other.A convergent boundary occurs when lithospheric plates are moving towards one another.Transform boundaries are created when tectonic plates slide past each other horizontally.What is a Tectonic plate?These are gigantic pieces of the Earth's crust and uppermost mantle and are made up of oceanic crust and continental crust.
A convergent boundary as the name implies occurs when lithospheric plates are moving towards one another.
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A measurement is accurate if it
Answers
Answer:
If a measurement closely matches the recognized standard for that measurement, it is considered accurate.
Explanation:
Precision:
“Precision means how close the measured values are to each other.”
A precise measurement is one that has less absolute uncertainty.
Measurement of Precision:
The Precision of measurement is found out by the instrument being
used. It is described by the least count of the measuring instrument. The smaller a physical quantity, the more precise instrument should be used.
Example:
Let the length of a pencil is measured with a meter rod and vernier caliper.
It shows that readings of the vernier caliper are more precise than the metering rod.
Determine the percent yield forthe reaction between 45.9 g ofNaBr and excess chlorine gas toproduce 12.8 g of NaCl and anunknown quantity of bromine gas.
Answers
Step 1:
The reaction must be written and balanced:
2 NaBr (aq) + Cl2 (g) → 2 NaCl (aq) + Br2 (g)
-----------
Step 2:
The limiting reactant here is NaBr. The excess agent is the Cl2 gas
The limiting reactant is already specified.
-----------
Step 3:
The actual yield is provided = 12.8 g NaCl
The theoretical yield must be calculated
2 NaBr (aq) + Cl2 (g) → 2 NaCl (aq) + Br2 (g)
The molar mass NaBr) 103 g/mol
The molar mass NaCl) 58.4 g/mol
Procedure:
2 x 103 g NaBr ------ 2 x 58.4 g NaCl
45.9 g NaBr ------ X = 26.0 g NaCl = theoretical yield
----------
Step 4:
% yield = actual yield/theoretical yield x 100 = (12.8 g/26.0 g) x 100 = 49.2 % approx
Answer: % yield = 49.2 %
Which of the following is an example of acceleration? 88m/s, 15km/hr,14m/s East, 9.8 m/s^2 south
Answers
Answer: The answer is 9.8 m/s^2 south
Explanation: