Answers
Answer:
1.089%
Explanation:
From;
ν =1/2πc(k/meff)^1/2
Where;
ν = wave number
meff = reduced mass or effective mass
k = force constant
c= speed of light
Let
ν =1/2πc (k/meff)^1/2 vibrational wave number for 23Na35 Cl
ν' =1/2πc(k'/m'eff)^1/2 vibrational wave number for 23Na37 Cl
The between the two is obtained from;
ν' - ν /ν = (k'/m'eff)^1/2 - (k/meff)^1/2 / (k/meff)^1/2
Therefore;
ν' - ν /ν = [meff/m'eff]^1/2 - 1
Substituting values, we have;
ν' - ν /ν = [(22.9898 * 34.9688/22.9898 + 34.9688) * (22.9898 + 36.9651/22.9898 * 36.9651)]^1/2 -1
ν' - ν /ν = -0.01089
percentage difference in the fundamental vibrational wavenumbers of 23Na35Cl and 23Na37Cl;
ν' - ν /ν * 100
|(-0.01089)| × 100 = 1.089%
Answer:
1.089%
Explanation:
From;
ν =1/2πc(k/meff)^1/2
Where;
ν = wave number
meff = reduced mass or effective mass
k = force constant
c= speed of light
Let
ν =1/2πc (k/meff)^1/2 vibrational wave number for 23Na35 Cl
ν' =1/2πc(k'/m'eff)^1/2 vibrational wave number for 23Na37 Cl
The between the two is obtained from;
ν' - ν /ν = (k'/m'eff)^1/2 - (k/meff)^1/2 / (k/meff)^1/2
Therefore;
ν' - ν /ν = [meff/m'eff]^1/2 - 1
Substituting values, we have;
ν' - ν /ν = [(22.9898 * 34.9688/22.9898 + 34.9688) * (22.9898 + 36.9651/22.9898 * 36.9651)]^1/2 -1
ν' - ν /ν = -0.01089
percentage difference in the fundamental vibrational wavenumbers of 23Na35Cl and 23Na37Cl;
ν' - ν /ν * 100
|(-0.01089)| × 100 = 1.089%
Related Questions
PLEASE ANSWER QUICKLY!!!!
2KI (aq) + Cl₂(g) → 2KCl(aq) + 1₂(g)
What volume of 12 gas forms when
21 L Cl2 react at STP?
[?] L 12
Answers
The volume of 12 gas forms when 21 L Cl2 react at STP is 21 L.
To determine the volume of 12 gas (I assume you mean I2 gas) formed when 21 L of Cl2 reacts at STP (standard temperature and pressure), we need to use the ideal gas law equation.
The ideal gas law equation is given by:
PV = nRT
Where:
P = pressure
V = volume
n = number of moles
R = ideal gas constant
T = temperature
At STP, the pressure is 1 atm, and the temperature is 273.15 K.
From the balanced equation, we can see that the molar ratio between Cl2 and I2 is 1:1. So, if 21 L of Cl2 reacts, it will produce an equal volume of I2 gas.
Given that the volume of Cl2 is 21 L, we can assume the volume of I2 gas formed will also be 21 L.
Therefore, the volume of I2 gas formed is 21 L.
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How much ice in grams would have to melt to lower the temperature of 352 mL
of water from 15 ∘C
to 0 ∘C
? (Assume that the density of water is 1.0 g/mL
Answers
Answer:
66 grams of ice would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C.
Explanation:
To calculate the amount of ice that would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C, we need to use the formula:
Q = m_water * c_water * ΔT_water + m_ice * Lf
where,
Q = the amount of heat transferred,
m_water = the mass of water, c_water is the specific heat capacity of water,
ΔT_water = the change in temperature of water, m_ice = the mass of ice,
Lf = the specific latent heat of fusion of ice.
First, let's calculate the amount of heat transferred to the water:
Q = m_water * c_water * ΔT_water
Q = 352 g * 1.0 cal/(g*°C) * (15-0) °C
Q = 5,280 cal
Next, we can use the specific latent heat of fusion of ice, which is 80 cal/g, to calculate the amount of heat required to melt the ice:
Q = m_ice * Lf
Q = m_ice * 80 cal/g
m_ice = Q / Lf
m_ice = 5,280 cal / 80 cal/g
m_ice = 66 g
How many liters of carbon dioxide gas are in 18.6 moles of CO2 at STP?
Answers
Answer:
416.876
Explanation:
Uhmm I am so so very sorry if this is incorrect
HELPP!!! Find the mass of a rock with a density of 1.36 g/ml, if the rock is placed in a graduated cylinder and the water rises from 16.8 ml to 21.3 ml
Answers
Answer:
The answer is 6.12 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density of rock = 1.36 g/mL
volume = final volume of water - initial volume of water
volume = 21.3 - 16.8 = 4.5 mL
The mass of the rock is
mass = 1.36 × 4.5
We have the final answer as
6.12 gHope this helps you
Where does the stored energy in these cabbage leaves come from ?
Answers
Answer:
The energy in cabbage leaves comes from the light from the sun.
Explanation:
The plant keeps the light (in the leaves) as energy to help make it grow.
This is chemistry thank s
Answers
Which are processes that add to the genetic differences in siblings? Cheek all that apply. Interphase Independent assortment Cytokinesis. Crossing over Mitosis
Answers
Answer:crossing over
Explanation:
Answer:
Crossing Over and Independent Assortment.
Explanation:
Crossing over: In Prophase I of Meiosis I, homologous chromosomes line up their chromatids and "cross-over", or exchange corresponding segments of DNA with each other. This produces genetic variation by allowing more combinations of genes to be produced.
Independent Assortment: In Anaphase I of Meiosis I, homologues separate and move to opposite sides of the cell. Resulting cells have one chromosome from each pair of homologous chromosomes. However, WHICH chromosome that each cell gets is completely random.
What volume would 7.83x10^3 moles of nitrogen gas occupy
Answers
Answer:29.232
Explanation:6.023x10^23
what properties of a natural resource make it useful for humans as a materials or energy source?
Answers
The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.
What are natural resources?The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.
Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.
Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.
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barium hydroxide is insoluble in water. do you do any reaction that produces this compound in this experiment. If so, write down the equation for this reaction.
Answers
Starting with 0.3500 mol CO(g) and 0.05500 mol COCl2(g) in a 3.050 L flask at 668 K, how many moles of CI2(g) will be present at equilibrium?
CO(g) + Cl2(g)》COCl2(g)
Kc= 1.2 x 10^3 at 668 K
Answers
At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
1: Write the balanced chemical equation:
\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)
2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.
Initial:
\(C_O\)(g) = 0.3500 mol
\(Cl_2\)(g) = 0.05500 mol
\(C_OCl_2\)(g) = 0 mol
Change:
\(C_O\)(g) = -x
\(Cl_2\)(g) = -x
\(C_OCl_2\)(g) = +x
Equilibrium:
\(C_O\)(g) = 0.3500 - x mol
\(Cl_2\)(g) = 0.05500 - x mol
\(C_OCl_2\)(g) = x mol
3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:
Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]
4: Substitute the given equilibrium constant (Kc) value into the expression:
1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)
5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:
1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x
6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.
7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.
8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):
\(Cl_2\)(g) = 0.05500 - x
9: Calculate the value of \(Cl_2\)(g) at equilibrium:
\(Cl_2\)(g) = 0.05500 - x
\(Cl_2\)(g) = 0.05500 - (positive value of x)
10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.
Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
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When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is Most studied answer a) dilute b) unsaturated c) saturated d) polar e) nonpolar
Answers
When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is Saturated.
Solution is saturated which means no more solute can be dissolved in the solvent at the given/present temperature and pressure conditions. To dissolve more sugar in the tea we need to increase the temperature of the tea so that the tea becomes unsaturated, for the given conditions also the solubility of the solids increases with the increase in the temperature, so more of the sugar can be dissolved if the temperature of the solvent is increased.
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Find the sum of 6.27 x 101+ 2.35 x 102.
Answers
Answer:
872.97
Explanation:
6.27 x 101 + 2.35 x 102
First, let's do the multiplication before you add them
6.27 x 101 = 633.27
2.35 x 102 = 239.7
Now that we simplified them, we can add them together
633.27 + 239.7
872.97
Hope this helped!
Have a supercalifragilisticexpialidocious day!
what mass of MgO will be produced when 0.5 Moles of Mg burns in oxygen
Answers
2Mg + O2 = 2MgO
0,5/2 = х / 2
х = 0,5
0,5* 40 = 20g
Stephan’s mother cuts a twig from a rose bush and plants it in the soil. After a few days, Stephan observes a new plant growing. Which characteristic does the growth of the new plant depict?
Answers
The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.
Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.
The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.
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calculate how much solid NaH2PO4•H2O is required to prepare 50.00 mL of a 0.100M H3PO4/NaH2PO4•H2O buffer at a pH of 2.14 when 25.00mL of a 0.1000M H3PO4 solution is used?
Answers
We can calculate the mass of NaH2PO4·H2O required mass of NaH2PO4·H2O = (0.00250 - 5.5 x 10⁻⁻⁷)
Is NaH2PO4 H2O an acid or base?Sodium dihydrogen phosphate NaH2PO4 (monobasic) and sodium hydrogen phosphate Na2HPO4 (dibasic) are a weak acid and its conjugate base pair that are mixed to make a buffer with pH 7.2.
To calculate the amount of solid NaH2PO4·H2O required to prepare the buffer, we need to use the Henderson-Hasselbalch equation:
pH = pKa + log([A-]/[HA])
First, we need to calculate the pKa of phosphoric acid (H3PO4). The dissociation reactions for phosphoric acid are:
H3PO4 ⇌ H+ + H2PO4-
\(Ka1 = 7.5 x 10^-3\)Ka1 = 7.5 x 10^-3
H2PO4- ⇌ H+ + HPO42-
\(Ka2 = 6.2 x 10^-8\)
HPO42- ⇌ H+ + PO43-
\(Ka3 = 4.8 x 10^-13\)
pKa2 = -log(Ka2)
\(pKa2 = -log(6.2 x 10^-8) = 7.21\)
\([A-]/[HA] = 10^(pH - pKa)\)
[A-]/[HA] = 10^(2.14 - 7.21) = 1.1 x 10^-5\([A-]/[HA] = 10^(2.14 - 7.21) = 1.1 x 10^-5\)
H3PO4 ⇌ H+ + H2PO4-
moles of H3PO4 = (0.1000 M) x (0.02500 L) = 0.00250 mol
moles of NaH2PO4·H2O = 0.00250 - x
The molar mass of NaH2PO4·H2O is 138.01 g/mol, so the mass of NaH2PO4·H2O required is:
mass of NaH2PO4·H2O = (0.00250 - x) mol x (138.01 g/mol)
Now, we can use the ratio of [A-] to [HA] to solve for x:
[A-]/[HA] = [NaH2PO4·H2O]/[H3PO4]
\(1.1 x 10^-5 = x / (0.05000 L x 0.100 M)\)
x = 5.5 x 10^-7 mol\(x = 5.5 x 10^-7 mol\)
Finally, we can calculate the mass of NaH2PO4·H2O required:
mass of \(NaH2PO4·H2O = (0.00250 - 5.5 x 10^-7)\).
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12. What is the chemical name for the compound
CH3CH₂CH₂CH3?
(1) butane
(3) decane
(2) butene
(4) decene
Answers
The chemical name for the compound CH3CH₂CH₂CH3 is butane.
What is alkane?Alkanes are any acyclic saturated hydrocarbon with a carbon to carbon single bond e.g. methane, ethane etc.
Alkanes have a general molecular formula of CnH2n+2. The number of carbon atoms determines the name of the alkane member.
According to this question, a chemical compound with the molecular formula; CH3CH₂CH₂CH3 is given. This compound posseses 4 carbon atoms and 10 hydrogen atoms, hence, is butane.
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Which of the following pairs of valence electrons is ordered CORRECTLY
in ranking ionization energy?
O p?
O p3
O p5
O p4
Answers
Answer:
p4 is the correct answer
Hydrogen reacts with oxygen according to the balanced equation
2H₂ (g) + O2(g) → 2H₂O(g). If X is the number of molecules of H₂ which react,
then the number of O2 molecules reacting is
Answers
Answer:
x/2
Explanation:
X = 2 molecules of H2
For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.
I hope I'm understanding this question right.
What does the strong nuclear force do?
Answers
Answer:
The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons. It also holds together the atomic nucleus and underlies interactions between all particles containing quarks. The strong force originates in a property known as colour.
Explanation:
How does a polar covalent bond differ from a covalent bond
Answers
Covalent bonds involve equal sharing of electrons while polar covalent bonds involve unequal sharing of electrons.
Polar covalent vs covalent bondsA covalent bond involves the sharing of electrons between two atoms. A polar covalent bond is a type of covalent bond where the electrons are not shared equally between the atoms.
This occurs when one atom in the bond has a higher electronegativity than the other, resulting in an unequal distribution of electrons.
The result is a bond with a partial positive and a partial negative charge, creating a polar molecule. In contrast, a nonpolar covalent bond involves an equal sharing of electrons between two atoms.
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Which two the following functional groups does the amino acid have according to the picture? ( worth 50 points <3)
Answers
The two functional groups that the aminoacid has according to the picture are amine and carboxyl.
What is a functional group?In chemistry and related areas, a functional group can be defined as a group of atoms bonded in a specific molecule that can affect the was the molecule reacts or the specific behavior of it.
In the case of the molecule presented, which is an amino acid, two functional groups can be identified:
An amine group: This includes the N atom bonded to the two hydrogens.A carboxyl group: This includes the terminal carbon linked to two oxygen atoms and a hydrogen atom.Learn more about functional groups in https://brainly.com/question/1356508
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Read each question carefully, and answer yes or no to each one. At the end of each section, follow the directions to score your answers (pay close attention as the directions for scoring may change for each section). After you complete the entire assessment, total the points from all seven sections. This will give you a total health score. The higher the score, the more healthy your lifestyle. If you feel you have a low score, look back through the assessment and identify areas where you can change your unhealthy habits, and explain what changes you would make and why. Write your assessment in the essay box below.
Section 1: Physical Fitness
Do you exercise or play a sport for at least 30 minutes three or more times a week?
Do you stretching before and after exercising?
Do you warm up before exercising and cool down afterwards?
Do you think that you are at a healthy weight?
Are you mostly happy with the way your body looks and feels?
Do you think you have enough energy?
Give yourself one point for each No response and two points for each Yes response. Section score: ____
Section 2: Family History
Do you have a family member who:
has high blood pressure?
has diabetes?
has heart disease?
has cancer?
is extremely overweight?
Give yourself one point for each Yes response and two points for each No response. Section score: ____
Section 3: Hygiene and Medical Care
Do you floss your teeth every day?
Do you brush your teeth at least twice a day?
Do you visit the dentist at least once a year?
Do you use sunscreen?
Do you know basic first aid?
Are all your immunizations current?
Do you get your vision and hearing checked each year?
Do you see the doctor for a check-up once each year?
Do you feel you get enough sleep at night?
Do you know the warning signs for cancer?
Give yourself one point for each No response and two points for each Yes response. Section score: ____
Section 4: Nutrition
Do you eat a lot of red meat or eggs?
Do you add salt to your food?
Do you add sugar to your food?
Do you eat a lot of high-fat or high-sugar foods?
Do you add butter or cheese to your food?
Do you choose fried foods more often than baked or broiled foods?
Do you drink caffeinated drinks, such as coffee or sodas?
Do you skip meals?
Give yourself one point for each Yes response and two points for each No response. Section score: ____
Section 5: Drug Use
Do you smoke or chew tobacco?
Do you drink alcohol?
Have you ever used marijuana or other illegal drugs?
Have you ever abused a prescription drug?
Give yourself zero points for each Yes response and two points for each No response. Section score: ____
Section 6: Safety
Have you ever ridden with drivers who were under the influence of alcohol or drugs?
Have you ever ridden with drivers who speed or disobey traffic laws?
Do you ever forget to wear your seat belt?
Do you ever forget to wear a helmet when riding a bike or skateboarding?
Do you ever play with matches or hazardous materials?
Is there a gun in your house?
Give yourself zero points for each Yes response and two points for each No response. Section score: ____
Section 7: Emotional and Social Health
Do you have hobbies or activities that you enjoy?
Do you give your best effort when doing your work?
Do you find it easy to laugh?
Do you express anger in an appropriate way?
Do you easily fall asleep at night?
Do you share personal problems with someone you trust?
Do you feel well liked by others?
Do you have someone you can turn to if you need help?
Are your family members and close friends in good health?
Are you generally happy?
Give yourself one point for each No response and two points for each Yes response. Section score: ____
Total Health Score: ____
Answers
Answer:
Yes
Yes
Yes
All yes
Explanation:
For the following reaction, 8.43 grams of silicon tetrafluoride are allowed to react with 7.68 grams of water . Silicon tetrafluroide (s) + water (l) -> hydrofluoric acid (aq) + silicon dioxide (s) What is the maximum amount of hydrofluoric acid that can be formed? What is the formula for the limiting reactant? What amount of the excess reactant remains after the reaction is complete?
Answers
We must identify the limiting reactant and use that information to compute the maximum amount of hydrofluoric acid that can be produced in order to provide answers to these questions. Calculating the quantity of extra reactant left behind after the reaction is finished is also necessary.
What in chemistry is a "limiting reagent"?A limiting reagent is a reactant in a chemical reaction that controls how much product is created, according to the definition of the term. Because the reactions between the elements and compounds in a balanced chemical equation depend on their mole ratios, the use of a limiting reactant is necessary.
A Limiting Reactant is what?A substance that takes part in a chemical reaction is known as a limiting reactant. It establishes the maximum product amount that
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Which formula represents an ionic compound?
A)H2
B)CH4
C)CH3OH
D)NH4CI
Answers
Explanation:
I will give 15 points
Answers
Answer:
the question is not visible clearly....
Answer:
a and d
Explanation:
I believe this is it
true/false. label the functional groups in the molecule. you are currently in a labeling module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop.a molecule is composed of several functional groups.
Answers
The statement is true that a molecule is composed of several functional groups.
What is molecules?A molecule is a group of two or more atoms held together by chemical bonds. Atoms can form chemical bonds by sharing electrons with other atoms, leading to the formation of stable molecules with unique chemical and physical properties. Molecules can be made up of atoms of the same element or different elements, and they can vary widely in size and complexity. In biology, many important molecules are made up of carbon, hydrogen, oxygen, nitrogen, and other elements, and they play critical roles in biological processes such as metabolism, cellular signaling, and genetic information storage and transmission. Examples of important biological molecules include DNA, RNA, proteins, carbohydrates, lipids, and many others. These molecules are responsible for carrying out the various functions of cells and organisms and are critical for life as we know it.
Here,
Many molecules in biology are composed of several functional groups, which are specific atoms or groups of atoms within the molecule that give it its chemical properties and reactivity. Examples of common functional groups in biological molecules include amino (-NH2), carboxyl (-COOH), hydroxyl (-OH), phosphate (-PO4), and methyl (-CH3) groups, among others. The presence of these functional groups can determine how a molecule interacts with other molecules in the cell and can influence its function and activity.
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What do the blue and red lines indicate?
A cold front is moving to the north and west before a warm front moves through.
A cold front is moving to the south and east before a warm front moves through.
A warm front is moving to the north and east before a cold front moves through.
A warm front is moving to the south and west before a cold front moves through.
WILL GIVE BRAINLIEST!
Answers
Answer:
this the one i needed help on pleasee sb help meh out
Explanation:
Answer:
A cold front is moving to the north and west before a warm front moves through.
Explanation:
Which statement defines dynamic equilibrium? A state of balance in which the rates of the forward and reverse reactions are equal. A state of balance in which the forward reaction stops but reverse reaction continues. A state of balance in which the forward reaction continues but reverse reaction stops. A state of balance in which the forward and reverse reactions stop.
Answers
Answer:
A state of balance in which the rates of the forward and reverse reactions are equal.
Explanation:
The dynamic equilibrium is a state of balance in which the rates of the forward and reverse reactions are equal, like we can see in the following drawing:
And the concentration of the reactants and products become stable in time.
Answer: A state of balance in which the rates of the forward and reverse reactions are equal.
Explanation:
chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time.
C6H12O6 + 602 → 6CO2 + 6H₂O
The most efficient ratio is
1 C6H12O6 6 02.
Which set of reactants will be the most
efficient (least wasteful of materials) for
the reaction?
A. 1.0 mol C6H12O6 and 3.0 mol O₂
B. 1.5 mol C6H₁2O6 and 3.0 mol O₂
C. 3.0 mol C6H₁2O6 and 6.0 mol O₂
D. 0.5 mol C6H₁2O6 and 3.0 mol O₂
Answers
Answer:
D
Explanation:
The ratio of C6H12O6 (which will be referred to as "the carb") to oxygen is 1 to 6, so if we find an answer which has the same ratio, it should be chosen. A is 1:3
B is even worse with a ratio of the carb to oxygen of 1:2
C is the same as B, 1:2
D has a ratio of the carb to oxygen of 1:6, which is what we are looking for.