A typical sample of brass is 67%(w/w) copper and 33%(w/w) zinc. How many moles of zinc are dissolved in 67 grams of copper?

Question

Quizplus · Accepted Answer

Given that brass is 67% copper and 33% zinc by weight, for every 67 grams of copper, there are 33 grams of zinc. The molar mass of zinc is approximately 65.38 g/mol. Therefore, the number of moles of zinc in 33 grams is calculated as 33 g / 65.38 g/mol = 0.50 mol.

A Typical Sample of Brass Is 67%(w/w) Copper and 33%(w/w)