A compound has a molar mass of 90 grams per mole and the empirical formula CH2O. What is the molecular formula of this compound?

Answers

Answer 1

Answer: CH2O = 12 + 2 + 16 = 30
90 /30 = 3
3 x (CH2O) = C3H6O3

Answer 2

Answer:

Final answer:

The molecular formula of a compound with an empirical formula of CH₂O and a molar mass of 90 g/mol is C₃H₆O₃. This is found by dividing the compound's molar mass by the molar mass of the empirical formula, and using the ratio to multiply the subscripts in the empirical formula.

Explanation:

The molecular formula of a compound can be determined using the molar mass and the empirical formula given. The empirical formula for the compound is CH₂O, which has a molar mass of approximately 30 g/mol (12 g for C, 1 g for H, and 16 g for O). If the molar mass of the compound is 90 g/mol, we can find the ratio of the molar mass of the compound to the empirical formula by dividing 90 g/mol by 30 g/mol, which gives us 3.

This means the molecular formula of this compound is three times the empirical formula. So, to obtain the molecular formula, you multiply each subscript in the empirical formula by 3. If you do this for CH₂O, you get C₃H₆O₃ which is the molecular formula of the compound.

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Related Questions

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What type of measurement is indicated by g/mL ?
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The mutual force of attraction between ions of opposite charges acn best be described as...A) an ionic bond B) a polar covalent bond C) an electronegative bond D) a non-polar covalent bond
Which equations shows the complete dissociation of a strong base?

What is the mass percent of oxygen in sodium bicarbonate (NaHCO3)?19.04%

27.37%

38.09%

57.13%

Answers

Na- 11=22

H-1 =1

C-12=12

O3=16*3 =48

total = 22+1+12+48 = 83

83-----> 48

100-----> 100*48/83=57.83 = 57.13 is nearest answer

Which statement is true about a proton and an electron?(1) They have the same masses and the same charges.
(2) They have the same masses and different charges.
(3) They have different masses and the same charges.
(4) They have different masses and different charges.

Answers

Final answer:

Protons and electrons differ in both their masses and their charges. Protons have a larger mass and positive charge whereas electrons have a smaller mass and negative charge.

Explanation:

The correct answer to your question about proton and electron characteristics is option 4: They have different masses and different charges. To elaborate, a proton is a positive-charged particle found in an atom's nucleus with a relatively high mass. On the other hand, an electron is a negative-charged particle circling the nucleus, with a mass nearly 2000 times lighter than a proton. Thus, they both differ in their masses and in their charges.

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Final answer:

The statement that is true about a proton and an electron is that they have different masses and different charges, which corresponds to option (4).

Explanation:

The correct statement about a proton and an electron is that they have different masses and different charges. Therefore, the answer to your question is (4) They have different masses and different charges.

Protons are subatomic particles found in the nucleus of an atom and have a positive electric charge. On the other hand, electrons are subatomic particles that orbit the nucleus of an atom and have a negative electric charge. The mass of a proton is significantly larger than the mass of an electron.

A proton's mass is about 1.6726 x 10-27 kilograms, which is nearly 1836 times the mass of an electron, which is approximately 9.109 x 10-31 kilograms.

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Chemistry Help:This reaction describes cellular respiration.

C6H12O6 + 6O2 → 6CO2 + 6H2O

Which compounds are the reactants and which are the products?

A.
reactants: C6H12O6 + 6O2

products: 6CO2 + 6H2O

B.
reactants: 6CO2 + 6H2O

products: C6H12O6 + 6O2

C.
reactants: 6CO2 + C6H12O6

products: 6H2O + 6O2

D.
reactants: 6H2O + 6O26CO2 + C6H12O6

products: 6CO2 + C6H12O6

Answers

It's answer A!
Reactants on left (see on the arrow), products on right.

Final answer:

For the given chemical equation illustrating cellular respiration, the reactants comprise glucose (C6H12O6) and oxygen (6O2), and the products are carbon dioxide (6CO2) and water (6H2O). This symbolizes how in living cells, glucose and oxygen are transformed into energy, leading to the release of carbon dioxide and water as byproducts.

Explanation:

In the given chemical equation for cellular respiration, C6H12O6 (glucose) and 6O2 (oxygen) are the reactants and 6CO2 (carbon dioxide) and 6H2O (water) are the products.

This represents the process in living cells where glucose and oxygen are transformed into energy, releasing carbon dioxide and water as byproducts. Therefore, the correct answer is option A: Reactants are C6H12O6 + 6O2 and products are 6CO2 + 6H2O.

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The half-life of a radioactive isotope is 20.0 minutes. What is the total amount of a 1.00-gram sample of this sample of this isotope remaining after 1.00 hour?

Answers

The amount remaining is obtained using the half life data. The total amount remaining after one hour is equal to 1/( e^ (ln2/(20/60))*1). The final answer is 0.125 grams.

Answer: 0.125 grams

Explanation:

Radioactive decay follows first order kinetics.

Half-life of give isotope = 20 minutes

$\lambda =\frac{0.693}{t_{(1)/(2)}}=(0.693)/(20)=0.03465min^(-1)$

$N=N_o* e^(-\lambda t)$

N = amount left after time t= ?

$N_0$ = initial amount = 1.0 g

$\lambda$ = rate constant

t= time = 1 hour = 60 min

$N=1.0* e^{- 0.03465mi^(-1)* 60min}$

N=0.125g

Thus amount left after 1 hour is 0.125 grams

_____ are a type of organic compound.a. Chlorides
b. Carbonates
c. Hydrocarbons
d. Nitrous oxides

Answers

Hydrocarbons are a type of organic compound. The answer is letter C. Hydrocarbons contains a carbon, hydrogen and oxygen bond that makes it organic. Chlorides, carbonates and nitrous oxides are not organic compounds but they are inorganic compounds.

A hydrocarbon is a molecule whose structure includes only hydrogen and carbon atoms. Hydrocarbons containing between six and ten carbon molecules are the top components of most fuels. In general, these molecules are burned to produce energy. Examples such include: 1. Methane: A fuel in electrical generation. 2. Propane: Generally used heating and cooking. 3. Butane: Generally used in lighters and aerosol cans. 4.Heptane: The major component of gasoline Hydrocarbons are majorly used as a combustible fuel source and are considered a primary source of energy for contemporary civilizations. Oil is an excellent example of a hydrocarbon fuel currently in use all over the world.

He decayed organic material that gives soil its dark brown or black color is calledA) clay.
B) humus.
C) loam.
Eliminate
D) silt.

Answers

B) Humus is the decayed organic material that gives soil its dark brown or black color.

Answer:

Answer is Humus

Explanation:

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