Answer:
151.87dm³
Step-by-step explanation:
Given parameters:
Volume of hydrogen gas = 6.78mole
Unknown:
Volume of hydrogen gas formed at STP = ?
Solution:
To solve this problem;
1 mole of a gas at STP = 22.4dm³ So;
6.78 mole of gas = 6.78 x 22.4 = 151.87dm³