3.5 grams aluminium bronze was heated in aqueous hydroxhloric solution. The hydrogen liberated measured 4.15L at STP. What is the percentage of copper in the given alloy?

3.5 grams aluminium bronze was heated in aqueous hydroxhloric solution

1.	3.5 grams aluminium bronze was heated in aqueous hydroxhloric solution. The hydrogen liberated measured 4.15L at STP. What is the percentage of copper in the given alloy?
Answer» ANSWER :4.72