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?
Answer
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water .
This means 1g of Hydrogen reacts with 8g of Oxygen to form H 2 O
1g Hydrogen → 8g Oxygen
3g Hydrogen → 3 × 8g Oxygen
= 24g Oxygen
Therefore,
24g Oxygen gas
would be required to react completely with
3g of hydrogen gas
.
