First slide

Gaseous state

Question

What weight of hydrogen at STP could be contained in a vessel that holds 3.36 L O₂ gas at STP?

Moderate

A

0.21 g
B

4.8 g
C

0.30 g
D

3.36 g

Solution

$22 .4 {LO}_{2} at STP = 1 {molO}_{2} 3 .36 {LO}_{2} at STP = \frac{3 .36}{22 .4} {molO}_{2} = 0 .15 {molO}_{2} = 0 .15 {molH}_{2} = 0 .30 {gH}_{2}$

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