Question

a chemist prepares a solution of copper(ii) sulfate (cuso₄) by weighing out 41.99 g of copper(ii) sulfate into a 450. ml volumetric flask and filling the flask to the mark with water.
calculate the concentration in g/l of the chemists copper(ii) sulfate solution. be sure your answer has the correct number of significant digits.

Explanation:

Step1: Convert volume from mL to L

Since \(1\space L = 1000\space mL\), then \(V=450\space mL=\frac{450}{1000}\space L = 0.450\space L\)

Step2: Calculate the concentration

The formula for concentration \(C\) (in \(g/L\)) is \(C=\frac{m}{V}\), where \(m = 41.99\space g\) and \(V = 0.450\space L\). So \(C=\frac{41.99\space g}{0.450\space L}\approx93.3\space g/L\)

Answer:

\(93.3\space g/L\)