What is the percent composition of CO2?

Answer 1

Carbonic acid - H2CO3

Find the atomic masses of each element and multiply it by however many atoms are in the compound, then add them together.

H = 1.007 × 2 = 2.014

C = 12.01

O = 16.00 × 3= 48.00

Molecular mass = 2.014 + 12.01 + 48.00 = 62.02 grams/mole

Take the mass of a specific element (above) and divide it by the total molecular mass. Change the final answer to a percent

Hydrogen: 2.014 ÷ 62.02 = .0325 = 3.25%

Carbon: 12.01 ÷ 62.02 = .194 = 19.4%

Oxygen: 48.00 ÷ 62.02 = .774 = 77.4%

Carbonic acid contains 3.25% Hydrogen, 19.4% Carbon, and 77.4% Oxygen.

Answer 2

Well, CO2 means 1 Carbon molecules and 2 Oxygen molecules.

This means the overall for Carbon is a third (1/3).

The percentage of this can be best shown as 33.333 reccuring.

In more detail, the atomic weight of carbon is 12 and of oxygen 16. So an atom of CO2 has an atomic weight of 12 + 2x16, that is 44, of which 12 is carbon. So CO2 contains 12/44 of carbon, that is 27% carbon.

Answer 3

Carbonic acid - H2CO3

Find the atomic masses of each element and multiply it by however many atoms are in the compound, then add them together.

H = 1.007

Answer 4

CO is the chemical formula for carbon monoxide. The percent composition of CO is 42.88 percent carbon by mass and 57.12 percent oxygen.

Answer 5

well, in the terms of percent, carbon dioxide has two carbon atoms and one oxygen atom, so the ratio of carbon to oxygen in percent will be %66.66, or 66 2/3%

Answer 6

The chemical formula for carbonic acid is H2CO3.

Answer 7

- hydrogen: 3,25 %
- carbon: 19,35 %
- oxygen: 77,40 %

Answer 8

in atmosphere it is 0.03%

Answer 9

33% carbon, 66% Oxygen

Answer 10

29