2KClO3 -> 2KCl + 3O 2?

Question

how many grams of KCl are produced from the complete reaction of 6.60 mol of KClO?
How many grams of KCl are produced from the complete reaction of 47.5g of KClO3 ?

Answer 1

Stoichiometry problems will be with you your entire life in chemistry, so you best learn how to solve them. The important idea is that the coefficients in the balanced equation relate moles of each component in the reaction.

Since you're give a number of moles of KClO3 and asked to find a mass, recognize that 2 moles of KClO3 will give you 2 moles of KCl. So, 6.60 mol will give you 6.60 moles KCl. Use the atomic mass of KCl to calculate the amount in grams of 6.60 moles KCl.

For the second one, follow this procedure:

grams KClO3 --> moles KClO3 --> moles KCl --> grams KCl