Question

if 2.8 gram of carbon monoxide contains 1.2 gram of carbon what is the percentage by mass of oxygen in carbon monoxide​

Answer 1

Explanation:

total mass of carbon monoxide=2.8grams

mass of carbon=1.2grams

therefore mass of oxygen=2.8-1.2=1.6grams

percentage by mass of oxygen=(1.6/2.8)×100

=160/2.8=57.14

THEREFORE PERCENTAGE BY MASS OF OXYGEN IN GIVEN CARBON MONOXIDE IS 57%.

I hope you are satisfied by my answer.

Answer 2

CO contains 1.6 gram O2

(1.6/2.8×100)%

(400/7)%

57.1%