A typical sample of brass is 67%(w/w) copper and 33%(w/w) zinc and has a density of 8.40 g/mL. What is the molarity of this solution?

Question

Quizplus · Accepted Answer

To find the molarity, we need to calculate the moles of solute (copper and zinc) per liter of solution. First, calculate the mass of 1 liter of brass using its density (8.40 g/mL = 8400 g/L). Then, find the moles of copper and zinc using their respective percentages and molar masses (Cu: 63.55 g/mol, Zn: 65.38 g/mol). Finally, add the moles of copper and zinc to get the total molarity.

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