Question

if 9.0 grams of water contains 1.0 grams of hydrogen what mass of oxygen is contained in 36 grams of water?​

Answer 1

9 gram of water contains 1 g of hydrogen and 8 grams of Oxygen

$\\ \sf\longmapsto \dfrac{8}{9}=\dfrac{x}{36}$

$\\ \sf\longmapsto 9x=36(8)$

$\\ \sf\longmapsto x=\dfrac{36(8)}{9}$

$\\ \sf\longmapsto x=4(8)=32$

• 36g of water contains 32g of oxygen