Calcium chloride is 36.11% calcium by mass. How many grams of calcium are in 40.0 grams of calcium chloride

To calculate the grams of calcium in calcium chloride, we need to determine the mass of calcium in the compound.

Given that calcium chloride is 36.11% calcium by mass, it means that 36.11 grams of the compound contains 36.11% of calcium.

To find the amount of calcium in 40.0 grams of calcium chloride, we can set up a proportion using the given information:

(36.11 grams of calcium chloride) / (36.11 grams of calcium) = (40.0 grams of calcium chloride) / (x grams of calcium)

We can cross-multiply and solve for x.

36.11 grams of calcium chloride * x grams of calcium = 40.0 grams of calcium chloride * 36.11 grams of calcium

x grams of calcium = (40.0 grams of calcium chloride * 36.11 grams of calcium) / 36.11 grams of calcium chloride

x grams of calcium = 40.0 grams

Therefore, there are 40.0 grams of calcium in 40.0 grams of calcium chloride.