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.

the answer is a and have a great day

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.