Can someone please answer my question

Question

When heated, KClO3 decomposes into KCl and O2.

2KClO3⟶2KCl+3O2

If this reaction produced 49.2 g KCl,  how many grams of  O2 were produced?

Answer 1

To find the grams of oxygen produced you first finding the moles of KCl.

49.1 grams of KCl divided by 74g/mol of KCl produces 0.665moles of KCl.

Use the mole ratio of KCl to O₂ to find the grams of ocxygen produced

KCl to oxygen is 2:3

0.665*3/2=0.998 moles

0.998moles*32g/mol=31.94grams of oxygen