Chemistry- the chemical equation dealing with molecules and heat
I don't really understand the question.
"A student heats 100.0g of copper(II)sulfate pentahydrate and obtains 58.2g of anhydrous copper(II) sulfate. What percent yield was obtained in this experiment? CuSO4 *5H2O + heat ==> CuSO4 + 5H2O"
I don't really understand what the percent yield is. And what I learnt in class, I only deal with one molecule not like anhydrous copper(II) Sulfate. So I've no idea what should I do and figure this question out.
Please help me.Thank you!:)