Phosphine gas reacts with oxygen according to the following equation: Calculate...

Phosphine gas reacts with oxygen according to the following equation:

Calculate

(a) the mass of tetraphosphorus decaoxide produced from 12.43 mol of phosphine.

(b) the mass of PH₃ required to form 0.739 mol of steam.

(c) the mass of oxygen gas that yields 1.000 g of steam.

(d) the mass of oxygen required to react with 20.50 g of phosphine.