What mass of calcium is required to produce 4.2 g of calcium bromide, starting with 3.4 g of bromine?
A) 0.4 g
B) 3.4 g
C) 4.2 g
D) 1.6 g
E) 0.8 g

Question

Quizplus · Accepted Answer

To find the mass of calcium required, we first need to determine the mass of bromine in calcium bromide. The molar mass of calcium bromide (CaBr2) is approximately 200 g/mol, and bromine (Br2) is approximately 160 g/mol. Given 3.4 g of bromine, we can calculate the mass of calcium needed by subtracting the mass of bromine from the total mass of calcium bromide: 4.2 g - 3.4 g = 0.8 g of calcium.

What Mass of Calcium Is Required to Produce 4