How many grams of O_2(g) are needed to react completely with 4.46 g of H_2(g) according to the following balanced chemical equation: 2H_2(g) + O_2(g)--> 2H_2_O(g)

Answer 1

the reaction equation is in moles

convert the H2 into moles

you need half as many O2 moles

convert the O2 into grams