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.

0.30 g of a substance gives 0.88 g of carbon dioxide and 0.54 g water.

1.	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.
Answer» SOLUTION :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