0.30 g of a substance gives 0.88 g of carbon dioxide and 0.54 g water. Calculate the percentage of carbon and hydrogen in it.

Explanation

Weight of organic compound = 0.30 g
Weight of carbon dioxide = 0.88 g
Weight of water = 0.54 g
Percentage of carbon :
44 g if carbondioxide contains, carbon = 12 g
0.88 g of carbon dioxide contains,
carbon `= (12xx0.88)/(44)g`
0.30 g substance contains, carbon `= (12xx0.88)/(44)g`
100 g substance contains
`= (12xx0.88)/(44)xx(100)/(0.30)=80 g` of carbon
Percentage of carbon = 80
Percentage of hydrogen :
18 g of water contains, hydrogen = 2g
0.54 g of water contains, hydrogen `= (2xx0.54)/(18)g`
0.30 g of substance contains hydrogen `= (2xx0.54)/(18xx0.30)g`
100 g of substance contains `=(2xx0.54)/(18xx0.30)xx100 g`
= 20 g of hydrogen
Percentage of hydrogen = 20