36.0 mol of P4O10 contains how many moles of P?

Question

I need help solving

Answer 1

Look at it this way:

1 moles of P₄O₁₀ contains 4 moles of P and 10 moles of O.

For moles of P, you solve as follows:

36.0 moles P₄O₁₀ x 4 moles P/1 mole P₄O₁₀ = 144 moles P