Question

what is the percent mass of 61 g of calcium chloride in a 205 g solution?
select the correct answer below:
18.2%
21.3%
29.8%
36.4%

Explanation:

Step1: Recall the formula for mass - percent

The formula for mass - percent (\(\text{mass}\%\)) is \(\text{mass}\%=\frac{\text{mass of solute}}{\text{mass of solution}}\times100\%\)

Step2: Substitute the given values into the formula

Here, the mass of the solute (calcium chloride) \(m = 61\space g\) and the mass of the solution \(M=205\space g\)

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Answer:

\(29.8\%\) (the third option)