Answer the following questions:
1. 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 45 \(g\) of hydrogen gas?
Ratio of \(H\) : \(O\) by mass in water is:
Hydrogen : Oxygen →
∴ = 45 : \(x\)
\(x\) =