Question

a chemist adds 0.26 l of a 0.358 g/l calcium sulfate (caso₄) solution to a flask. calculate the mass in grams of calcium sulfate the chemist has added to the flask. be sure your answer has the correct number of significant digits.

Explanation:

Step1: Use the formula \(m = c\times V\)

Here, \(c = 0.358\space g/L\) (concentration) and \(V=0.26\space L\) (volume).

Step2: Substitute the values into the formula

\(m=(0.358\space g/L)\times(0.26\space L)\)

$$
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Step3: Round to the correct number of significant digits

The least number of significant digits in the given values (\(0.358\) has 3, \(0.26\) has 2) is 2. So, \(m = 0.093\space g\) (rounded to 2 significant digits).

Answer:

\(0.093\space g\)