Pls w this stoichiometry question i can’t figure it out sm

6.3x10-² moles of H20

Explanation: Solution:

Convert first the mass of O2 to moles which is 1 mole of O2 over its molar mass. The molar mass of O2 is 32. Then after that check the stoichiometric factors of both O2 and H2O.

0.252gO2 x 1mole O2/ 32 g O2 x 4 mol H2O/ 5 moles O2.

Both g of O2 and moles of O2 will be canceled out so the remaining unit is mole of H2O.

10 years is the answer