Question

how many grams of carbon are in 25g of CO2

Answer 1

Mass of c is 5 so in 25g its mass =7g

Answer 2

Given :

A compound CO2 of mass 25 grams

To Find :

Amount of car on present in 25 grams of Carbon dioxide

Solution :

•CO2 contains Carbon and oxygen

•Molecular weight of carbon is 12 grams

•Molecular weight of oxygen is 16 grams

•So, weight of carbon dioxide = 12 + (16×2)

Weight of carbon dioxide=44 grams

•Now , By unitary method

44 grams of carbon dioxide contains 12 grams of carbon

1 gram of carbon dioxide contains 12/44 grams of carbon

25 grams of carbon dioxide contains 300/44 grams of carbon

•Hence , 25 grams of carbon dioxide contains 6.818 grams of carbon