Question

How many moles of oxygen are needed to produce 2 moles of Tetraphosphorus decaoxide (P4O10) in the reaction?

P4(s) + 5O2(g) →P4O10(s)

a. 1 mole
b. 0.2 moles
c. 10 moles
d. 5 moles

Answer 1

C

Step-by-step explanation:

5 moles of oxygen are needed to produce 1 mols of P4O10

x moles of oxygen are needed to produce 2 mols of P4O10

5/x = 1/2 Cross multiply

1*x = 2 * 5 Combine

x = 10

C