Answers
Related Questions
The following reaction is second order in [A] and the rate constant is 0.025 M-1s-1: The concentration of A was 0.65 M at 33 s. The initial concentration of A was ________ M.
Select one:
a. 0.24
b. 1.2 � 10-2
c. 0.27
d. 2.4
e. 1.4
Answers
Answer:
e. 1.4.
Explanation:
Hello,
In this case, for a second-order reaction, the integrated rate law is:
\(\frac{1}{[A]} =kt+\frac{1}{[A]_0}\)
In such a way, for the given data, we compute the initial concentration as shown below in molar units (M):
\(\frac{1}{[A]_0} =\frac{1}{[A]}-kt=\frac{1}{0.65M} -\frac{0.025}{M*s}*33s \\\\\frac{1}{[A]_0} =\frac{0.713}{M}\)
\([A]_0=\frac{1M}{0.713} =1.4M\)
Therefore, answer is e. 1.4 M.
Regards.
The initial concentration of the reaction is 1.4 M.
Using the formula;
1/[A] = kt + 1/[A]o
Where;
[A] = concentration at time t = 0.65 M
t = time = 33 s
k = rate constant = 0.025 M-1s-1
[A]o = initial concentration = 0.025 M-1s-1
Hence;
1/ 0.65 = (0.025 × 33) + 1/[A]o
1/[A]o = (0.65)^-1 - (0.025 × 33)
1/[A]o = 1.54 - 0.83
[A]o = 1.4 M
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(feso4.(Nh4) So4. 6H2o) +Kmno4+H2So4_Fe2(So4)3+K2So4+mnSo4+(Nh4)2So4+H2o
Answers
Answer:
balancing the equation?
Science pls helppp?!
Answers
Answer:
2nd one down
Explanation: distance divided by time interval
Hypothesize How much do you think an apple weighs?
Answers
Answer: 3 pounds
Explanation:
Please help me this is a big grade please
Answers
Answer:
water
Explanation:
because the others are in compounds and can not be considered as products lonely.
of the atoms below,___is the least electronegative. options: a) si b) f c) ca d) cl e) rb
Answers
Of the atoms that are given, Rubidium is least electronegative among the other 5 options, hence option e) rb is the correct option.
Electronegativite nature is the tendency of an atom to attract electrons towards itself. As we move from left to right in a period electronegativity increases as we move from metals to non metals.The electronegativity of an atom changes depending on the hybridization of the orbital employed in bonding.
Compared to electrons in p orbitals, s orbital electrons are retained more firmly. As a result, when the hybrid orbital has more s character, a bond to an atom that uses a spx hybrid orbital for bonding will be more strongly polarized to that atom. In organic chemistry, different functional groups rather than specific atoms are more frequently related with electronegativity.
It is common to use the terms group electronegativity and substituent electronegativity interchangeably. The inductive effect and the resonance effect, which are referred to as σ- and π-electronegativities, respectively, are typically distinguished from one another.
Hence, option e) rb is correct option here.
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which is the command center of the body
Answers
Answer:
nervous system
or u can say brain too
Explanation:
hope this is what u want
Answer:
Your nervous system is your body's command center.
Explanation:
since it is originated from your brain, it controls your movements, thoughts and automatic responses to the world around you.
Convert 1.36x10 to standard form
Answers
Answer:
13.6 is the correct answer written in standard form.
Explanation:
1.36, move the decimal once to the right to get 13.6
Answer:
13.6
Explanation:
The standard form is 13.6
Katie’s teacher has asked her to identify an unknown substance. She thinks about the properties of matter that will help her identify the substance. She knows it is a colorless liquid. She thinks it may be water but knows there are many colorless liquids that are not water. Which of the following statements would inform Katie that the liquid is NOT water?
Answers
Answer:
the liquid freezes at 32 degrees celcius(A) is not the properties of water as water freezes at 0 degrees celcius
write the structural formula for 2-bromo-3-chloro-4,4-dimethylpentanal
Answers
Answer:
Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO
Explanation:
The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.
The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.
The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.
The methyl groups are non-polar and do not have any significant reactivity.
The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.
The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.
Which of these is an example of a physical property?
A. Iron combines with oxygen to rust.
B. Potassium reacts in water to form a base.
C. Sodium metal is soft and malleable.
D. Sodium ignites when placed in water.
Answers
10. When dissolved in water, most Group 1 metal salts can be described as
strong electrolytes.
strong acids.
weak electrolytes.
A
B
C
D
non-electrolytes.
(1)
Answers
When dissolved in water, most Group 1 metal salts can be described as strong electrolytes.
When Group 1 metal salts are dissolved in water, they can be described as strong electrolytes. This is because Group 1 metals, such as lithium (Li), sodium (Na), potassium (K), and so on, readily lose their outermost valence electron to form positive ions (cations). These cations then dissociate completely in water, separating from the anions to which they were originally bonded.
The dissociation of Group 1 metal salts in water results in the formation of positively charged metal ions and negatively charged non-metal ions (anions). These ions are free to move and conduct electric current, making the solution a good conductor of electricity. The complete dissociation of Group 1 metal salts in water and the presence of freely moving ions make them strong electrolytes.
Strong electrolytes are substances that ionize completely or almost completely in solution, producing a high concentration of ions. This is in contrast to weak electrolytes, which only partially ionize and produce a lower concentration of ions.
In summary, when Group 1 metal salts are dissolved in water, they form strong electrolytes due to their ability to dissociate completely into ions, leading to a high concentration of freely moving ions in the solution, thus enabling efficient electrical conductivity.
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physical proceses? 2. (a). Calculate the maximum work done when the pressure of 10g of hydrogen is reduced from 20atm to 10atm at a constant temperature of 273°K. If the gas behaves ideally, will there be a change in internal energy? Hence determine the value of q in the process.
Answers
W = nRT ln(V2/V1)
where W is the work done, n is the number of moles of gas, R is the gas constant, T is the temperature in Kelvin, and V1 and V2 are the initial and final volumes of the gas.
First, we need to calculate the initial and final volumes of the gas using the ideal gas law:
PV = nRT
where P is the pressure, V is the volume, and n, R, and T are as defined above. Rearranging this equation to solve for V, we get:
V = (nRT)/P
Using this equation, we can calculate the initial volume of the gas:
V1 = (10 g H2 / 2.016 g/mol) * (0.0821 L·atm/mol·K) * (273 K) / (20 atm) = 11.9 L
And the final volume of the gas:
V2 = (10 g H2 / 2.016 g/mol) * (0.0821 L·atm/mol·K) * (273 K) / (10 atm) = 23.8 L
Now we can plug these values into the formula for work:
W = (10 g H2 / 2.016 g/mol) * (0.0821 L·atm/mol·K) * (273 K) * ln(23.8 L / 11.9 L) = 98.8 J
If the gas behaves ideally, there will be no change in internal energy because the temperature is constant (ΔU = 0). Therefore, the value of q in the process is equal to the negative of the work done:
q = -W = -98.8 J.
Which statement describes the law of conservation of energy?
O All systems will exchange matter and energy with their surroundings.
O All systems can exchange energy, but not matter, with their surroundings.
O Energy cannot be created nor destroyed, but it changes from one form to another.
O Energy is destroyed in most chemical reactions when new products are formed.
Answers
Answer:
option C is the correct answer
Explanation:
that's the law of the conservation of energy itself
Option C: The statement that best describes the law of conservation of energy is that energy cannot be created nor destroyed, but it changes from one form to another. The first law of thermodynamics, also referred to as this principle, asserts that the total energy within a closed system remains constant throughout its duration.
Energy may transform from one form to another, such as from kinetic to potential or from thermal to mechanical, but the total energy remains unchanged. This fundamental law has far-reaching implications in various scientific disciplines. It underlies the understanding of energy transfers and conversions in mechanical systems, chemical reactions, and even biological processes. It serves as a guiding principle for studying energy flow and efficiency in different contexts.
The law of conservation of energy has significant practical applications. It allows scientists and engineers to analyze and design systems with a clear understanding of energy conservation. It enables the development of energy-saving technologies and sustainable practices.
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Why does it mean by methane molecule is symmetrical?
Answers
A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.
Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.
Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.
Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.
Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.
The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.
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A Sample of an Organic Compound Contain
0.624 Carbon, 0.065 hydrogen, 0·028 oxygen
(a) what is the Emperical formuler of the Compound.
(b) If the relative molecular mass of the Compound Is 1940 what is the moleculer
formular of the compound (C=12₁ H=1
N = 14,0= 16)
Answers
(a) The empirical formula of the compound is \(C_{29}H_ {36}O\)
(b) The molecular formula of the compound is approximately \(C_{8}H_{118}O_{3}\)
To determine the empirical formula of the organic compound, we need to find the simplest whole-number ratio of the elements present.
(a) The given percentages of carbon, hydrogen, and oxygen can be converted into moles by dividing them by their respective atomic masses:
Carbon: 0.624 g / 12.01 g/mol = 0.052 mol
Hydrogen: 0.065 g / 1.008 g/mol = 0.064 mol
Oxygen: 0.028 g / 16.00 g/mol = 0.0018 mol
Next, we divide each of the mole values by the smallest mole value (0.0018 mol in this case) to obtain the mole ratio:
Carbon: 0.052 mol / 0.0018 mol ≈ 29
Hydrogen: 0.064 mol / 0.0018 mol ≈ 36
Oxygen: 0.0018 mol / 0.0018 mol = 1
Therefore, the empirical formula of the compound is \(C_{29}H_ {36}O\)
(b) To find the molecular formula, we need the relative molecular mass of the compound, which is given as 1940 g/mol. The empirical formula mass can be calculated by summing the atomic masses in the empirical formula:
Empirical formula mass: (29 × 12.01 g/mol) + (36 × 1.008 g/mol) + (1 × 16.00 g/mol) = 588.94 g/mol
To find the multiplier, we divide the relative molecular mass by the empirical formula mass:
Multiplier: 1940 g/mol / 588.94 g/mol ≈ 3.29
Rounding to the nearest whole number, the molecular formula of the compound is approximately 3 times the empirical formula, resulting in \(C_{8}H_{118}O_{3}\).
In summary, the empirical formula of the compound is\(C_{29}H_ {36}O\), and the molecular formula is approximately \(C_{8}H_{118}O_{3}\).
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The passage's author most vividly conveys the sense that Plumpp's poetry is like music when he
O uses words like "swing," "dance," and "sway" to characterize phrases in Plumpp's poems
O defines Plumpp as "the poet laureate of Chicago jazz and blues"
explains how long Plumpp has been writing about "Chicago jazz giants"
urges people to read Plumpp's poems and listen to the music Plumpp "immortalizes in print"
Answers
It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.
A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.
Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.
The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.
The strength of the bond is in the following order: H.....F > H.....O > H......N
The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.
Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.
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Answer:uses world like
Explanation:
As part of a soil analysis on a plot of land, a scientist wants to determine the ammonium content using gravimetric analysis with sodium tetraphenylborate, Na+B(C6H5)−4. Unfortunately, the amount of potassium, which also precipitates with sodium tetraphenylborate, is non‑negligible and must be accounted for in the analysis. Assume that all potassium in the soil is present as K2CO3 and all ammonium is present as NH4Cl.
A 5.025 g soil sample was dissolved to give 0.500 L of solution. A 100.0 mL aliquot was acidified and excess sodium tetraphenylborate was added to precipitate both K+ K + and NH+4 ions completely.
Compound Formula mass
B(C6H5)−4+K+⟶KB(C6H5)4(s) KB(C6H5)4 358.33 g/mol
B(C6H5)−4+NH+4⟶NH4B(C6H5)4(s) NH4B(C6H5)4 337.27 g/mol
K2CO3 138.21 g/mol
NH4Cl 53.492 g/mol
The resulting precipitate amounted to 0.277 g. A new 200.0 mL aliquot of the original solution was made alkaline and heated to remove all of the NH+4 as NH3. The resulting solution was then acidified, and excess sodium tetraphenylborate was added to give 0.105 g of precipitate.
Find the mass percentages of NH4Cl and K2CO3 in the original solid.
______ %NH4CL
______ %K2CO3
Answers
Answer:
Mass percentage of NH₄Cl = 3.54%
Mass percentage of K₂CO₃ = 1.01%
Explanation:
If a 200.0 mL aliquot produced 0.105 g of KB(C₆H₅)₄, then a 100.0 mL aliquot would produce 1/2 * 0.105 g = 0.0525 g of KB(C₆H₅)₄.
Therefore, mass of NH₄B(C₆H₅)₄ in the 100.0 ml aliquot = (0.277 - 0.0525)g = 0.2245 g
Number of moles of NH₄B(C₆H₅)₄ in 0.2245 g = 0.2245 g/ 337.27 g/mol = 0.0006656 moles
In 500 ml solution, number of moles present = 0.0006656 * 500/100 = 0.003328 moles.
From equation of the reaction; mole ratio of NH₄⁺ and NH₄B(C₆H₅)₄ = 1:1
Similarly, mole ratio of NH₄⁺ and NH₄Cl = 1:1
Therefore, moles of NH₄Cl in 500 ml sample = 0.003328 moles
Mass of NH₄Cl = 0.003328 mol * 53.492 g/mol = 0.178 g
Mass percentage of NH₄Cl = (0.178/5.025) * 100% = 3.54%
Number of moles of KB(C₆H₅)₄ in 0.105 g (precipitated from 200.0 ml aliquot) = 0.105 g/ 358.33 g/mol = 0.000293 moles
In 500 ml solution, number of moles present = 0.000293 * 500/200 = 0.0007326 moles.
From equation of the reaction; mole ratio of K⁺ and KB(C₆H₅)₄ = 1:1
Similarly, mole ratio of K⁺ and K₂CO₃ = 2:1
Therefore, moles of K₂CO₃ in 500 ml sample = 0.0007326/2 moles = 0.0003663 moles
Mass of K₂CO₃ = 0.0003663 mol * 138.21 g/mol = 0.05063 g
Mass percentage of K₂CO₃ = (0.05063/5.025) * 100% = 1.01%
When copper is changed to copper(II) nitrate by the nitric acid, it is an example of a(n) ______-_______ reaction. (two words, include the hyphen with no spaces)
Answers
Answer:
oxidation- reduction
Explanation:
where gaining electronic reduces one element and losing them oxidize the other nitric acid is not only strong it is also a oxidizing agent
Oxidize: copper = Cu+2When copper is changed to copper(II) nitrate by the nitric acid, it is an example of an oxidation-reduction.
What is molecule?
Molecule is defined as number of atoms combined together, that shows the most smaller chemical compound's fundamental unit that participate in chemical reaction. In the combination of atoms attractive forces play a vital role and it helps to bound the atoms by a chemical bond.
Liquid consist of small range of order and the reason behind this is intermolecular attractive force which is very strong and due to this reason molecules are packed together tightly. Due to presence of high kinetic energy the molecules present in the liquid move rapidly and fastly with one another.
Water is considered to be the simpler molecule and it consist of hydrogen and oxygen atom bounded together and due to the reason of high electronegativity of the oxygen's atom the bonds present are polar as well as covalent. Due to presence of high kinetic energy the molecules present in the liquid move rapidly and fastly with one another.
Therefore, When copper is changed to copper(II) nitrate by the nitric acid, it is an example of an oxidation-reduction.
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What common characteristics do all planets share?
A Planets are made of gas, orbit the sun, and have atmospheres.
B Planets are made of rock, orbit the sun, and have atmospheres.
C Planets have moons, have atmospheres, and are made of rock, gas, or ice.
D Planets have atmospheres, are made of rock or gas, and some have moons or rings.
Answers
Answer:
The answer is D
Explanation:
What is the mass of 6.00 cm^3 of mercury, density = 13.5939 g/cm^3?
Answers
Answer: 81.5634kg
Explanation:
Density=mass/volume
13.5939=m/6
make m subject of formula
m= 13.5939×6
m=81.5634kg
Determine the molecular formula of a compound that contains 26.7% P 12.1% N and 61.2% Cl and has a molar mass of 812 g/mol
Answers
Considering the definition of empirical and molecular formula, the molecular formula is P₇N₇O₁₄.
Empirical formulaThe empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms, that is, the subscripts of chemical formulas are reduced to the most integers. small as possible.
Molecular formulaThe molecular formula is the chemical formula that indicates the number and type of different atoms present in the molecule. The molecular formula is the actual number of atoms that make up a molecule.
In other words, the molecular formula is the actual formula of the molecule and is made up of the symbols that represent the chemical elements and the subscripts that indicate the number of atoms of each element that participate in the formation of the molecule.
Molecular formula in this caseIn this case, you know:
P: 26.7 %N: 12.1 %Cl: 61.2 %Assuming a 100 grams sample, the percentages match the grams in the sample. So you have 26.7 grams of P, 12.1 grams of N and 61.2 grams of Cl.
Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:
P: \(\frac{26.7 g}{31\frac{g}{mol} }\)= 0.86 moles
N: \(\frac{12.1 g}{14\frac{g}{mol} }\)= 0.86 moles
O: \(\frac{61.2 g}{35.45\frac{g}{mol} }\)= 1.72 moles
The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:
P: \(\frac{0.86 moles}{0.86 moles }\)= 1
N: \(\frac{0.86 moles}{0.86 moles }\)= 1
O: \(\frac{1.72 moles}{0.86 mole}\)= 2
Therefore the P: N: O mole ratio is 1: 1: 2
Then, the empirical formula is P₁N₁O₂= PNO₂, with a empirical mass of 31 g/mol + 14 g/mol + 2× 35.45 g/mol= 115.9 g/mol
The molecular formula can be calculated as MF= n(EF)
where:
MF= molecular formulan=molecula mass÷ empirical massEF= empirical formulaIn this case, the value n can be calculated:
n= 812 g/mol÷ 115.9 g/mol
Solving:
n= 7
Then, the molecular formula can be calculated as MF= 7×EF
Finally, the molecular formula is P₇N₇O₁₄.
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Predict the product(s) obtained when each of the following compounds is treated with chloromethane and aluminum trichloride. Some of the compounds might be unreactive. For those that are reactive, assume that conditions are controlled to favor monoalkylation.
Answers
The reaction of benzene with an alkyl chloride and aluminum trichloride is called a Friedel-Crafts alkylation.
What is chloromethane and aluminum trichloride?The aluminum trichloride is a Lewis acid that reacts with the alkyl chloride, and this converts the alkyl group into a very good electrophile. The overall reaction is an electrophilic aromatic substitution. A pi bond of the benzene ring will attack the electrophile as a nucleophile and form a new carbon-carbon bond. The result is a monosubstituted isopropyl group on the benzene ring.However, we are told that the conditions are set up to encourage dialkylation. The isopropyl group is a group that donates electron density through induction.Therefore, it is an ortho- and para-directing group. This means that once one isopropyl group is substituted on to the benzene ring, the second substitution will be favoured in the ortho- and para-positions. In this instance, the major product is the 1,4-disubstituted product. The reason being is that the isopropyl groups are very bulky, and the steric hindrance of having two isopropyl groups adjacent leads to a small amount of this product being formed.
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Metamorphism can best be defined as
a. Compaction and cementation of rock fragments
O
b. Precipitation of minerals dissolved in water
c. Solidification of magma by cooling
d. Changing of a rock by heat and pressure
Need help ASAP
Answers
Answer:
The answer is D if it's wrong let me know pls
Consider 5.00 L of a gas at 365 mmHg and 20. ∘C . If the container is compressed to 2.30 L and the temperature is increased to 40. ∘C , what is the new pressure, P2, inside the container? Assume no change in the amount of gas inside the cylinder.
Answers
Answer:
P₂ = 1.12 atm
Explanation:
To find the new pressure, you need to use the Combined Gas Law:
\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)
In this equation, "P₁", "V₁", and "T₁" represent the initial pressure, volume, and temperature. "P₂", "V₂", and "T₂" represent the new pressure, volume, and temperature. Before plugging the values into the equation, you need to
(1) convert the pressure from mmHg to atm (760 mmHg = 1 atm)
(2) convert the temperatures from Celsius to Kelvin (°C + 273)
The final answer should have 3 sig figs like the given values.
P₁ = 365 mmHg / 760 = 0.480 atm P₂ = ? atm
V₁ = 5.00 L V₂ = 2.30 L
T₁ = 20°C + 273 = 293 K T₂ = 40°C + 273 = 313 K
\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\) <----- Combined Gas Law
\(\frac{(0.480 atm)(5.00 L)}{293 K}=\frac{P_2(2.30 L)}{313 K}\) <----- Insert values
\(0.00819=\frac{P_2(2.30 L)}{313 K}\) <----- Simplify left side
\(2.56 = P_2(2.30L)\) <----- Multiply both sides by 313
\(1.12 = P_2\) <----- Divide both sides by 2.30
What type of intermolecular force will for between H2O AND CH3OH? Draw and label a picture of this bond. Explain in words how this bond forms.
Answers
Hydrogen bonding, which is unquestionably what we have, will occur from the intermolecular force between the molecules of H2O and CH3OH. Atoms trade or exchange valence electrons to create bonds.
How come we create bonds?Trust and self-esteem are developed in children and adolescents through strong emotional ties. After that, they can leave the family and establish wholesome friendships and other types of social ties. Healthy relationships consequently lower a child's chances of emotional discomfort or antisocial behaviour.
What exactly is a bonds, for example?The government of a country issues government bonds, a sort of fixed-interest bond. These bonds are thought of as low-risk investments. Examples of different kinds of government bonds include T - bills, Municipality Bond, Zero-Coupon Bonds, and others.
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1. Which of the following equilibriums are homogeneous and which are heterogeneous?
a. 2HF(g) ⇌ H2(g)+F2(g)
b. C(s) + 2H2(g) ⇌ CH4(g)
c. H2CCH2(g) + H2(g) ⇌ C2H6(g)
d. 2Hg(l) + O2(g) ⇌ 2HgO(s)
Answers
Explanation:
a. homogeneous equilibrium (all species are in the gas phase)
b. heterogeneous equilibrium (solid carbon is present)
c. heterogeneous equilibrium (solid catalyst may be present)
d. heterogeneous equilibrium (liquid mercury and solid mercury(II) oxide are present)
A group of engineers has created a biodome filled with air, plants, and animals. No material can get in or out, but sunlight can get in during the daytime. The walls of the biodome are made of a material that absorbs and locks away carbon dioxide from the air so it is not available to the living things inside. What do you predict will happen to carbon in the air over time? How could this affect the living things in the dome?
Answers
During the daytime, photosynthesis will occur while over a period of time carbon dioxide will accumulate as a result of respiration making it difficult for living things to survive.
What is photosynthesis?It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy through the process of cellular respiration.
Some of the energy which is converted is stored in molecules of carbohydrates like sugar and starches which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.
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use the appropriate standard reduction potentials below to determine the equilibrium constant at 401 k for the following reaction under acidic conditions.
Answers
The equilibrium constant of the redox reaction system is gotten as 3.67 * 10^11.
What is the equilibrium constant at 401 K?We know that the equation as it is a redox reaction. We would need to obtain the standard electrode potential of the cell and use this information to get the free energy of the system. Then we can now substitute values to get the equilibrium constant.
Now;
ΔG = -nFEcell
ΔG =Change in free energy
n = Number of moles of electrons
F = Faraday's of electricity
Ecell = Cell potential
Ecell = 1.23 V - 0.770 V
= 0.46 V
Then;
ΔG = -(2 * 96500 * 0.46)
ΔG = -88780 kJ/mol
Now we have;
ΔG = -RTlnK
R = gas constant
T = temperature
K = equilibrium constant
-88780 = -(8.314 * 401 * lnK)
lnK = -88780/ -(8.314 * 401)
lnK = 26.6
K = 3.67 * 10^11
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1. Write the IUPAC names for the following 1.1 1.2 N 1.3 O NO2 x Y ·0 OH 5
Answers
1. The IUPAC name of N is nitrogen.
2. Nitrogen dioxide
3.The IUPAC name of O is oxygen
4.The IUPAC name of OH is hydroxyl.
The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.
IUPAC names for the given compounds are:1.1. N: Nitrogen
The IUPAC name of N is nitrogen.
It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide
Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.
The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen
Explanation: The IUPAC name of O is oxygen.
It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.
X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.
Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.
It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.
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Note: The complete question is given below
Provide the IUPAC names for the following compounds:
\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)
C6H5CH(CH3)2
H2NCH2CH2CH2CH2CH2NH2
CH3CH2CH2CH2CH2OH
CH3CH2CH2CHOHCH3