Combined gas laws

Given: standard temperature =
273 K,
standard pressure = 100 KPa =
1 x 10° Pa,
R = 8.31 J mol-1 K-1

A student collected 75 cm° of hydrogen from the reaction between zinc and sulfuric acid at 20 °C
and 900 ka. What volume would this gas occupy at s.t.p.?

Can someone do this question