Question

48.5 moles of P4O10 contains how many moles of P

Answer 1

Answer : The number of moles of phosphorous are 194 moles.

Explanation : Given,

Moles of $P_4O_{10}$ = 48.5 moles

By the stoichiometry in $P_4O_{10}$, there are 4 moles of phosphorus and 10 moles of oxygen.

As, 1 mole of $P_4O_{10}$ contains 4 moles of phosphorous

So, 48.5 moles of $P_4O_{10}$ contains $48.5\times 4=194$ moles of phosphorous

Therefore, the number of moles of phosphorous are 194 moles.

Answer 2

So moles P = 4 x moles P4O10 
= 4 x 68.5 mol 
= 274 mol