Question icon
Grade 12th pass9 grade science

2. Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Profile image of Harshit Singh
5 Years agoGrade 12th pass
Answers icon

1 Answer

Profile image of Pawan Prajapati
5 Years ago
It is given that the ratio of hydrogen and oxygen by mass to form water is 1 : 8. Then, the mass of oxygen gas required to react completely with 1 g of hydrogen gas is 8 g. Therefore, the mass of oxygen gas required to react completely with 3 g of hydrogen gas is 8 × 3 g = 24 g.