Science, asked by qamar24567890, 10 months ago

plz answer my question correctly I will mark you as BRAINLIEST.....!!!​

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Answered by helper145
1

Explanation:

according to the balanced equation calculate the moles of no2 by the formula PV=NRT. using this calculate the no of moles of copper.. then multiply the moles of copper with its molecular mass to find its mass. (mass of copper/ total mass of brass )*100 gives u the mass % of cu

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