Question

part a
determine the number of moles of cl in 2.2 mol cacl₂.
express your answer using two significant figures.

Explanation:

Step1: Analyze the chemical formula

In \(CaCl_2\), there are 2 moles of \(Cl\) for every 1 mole of \(CaCl_2\). The conversion factor is \(\frac{2\space mol\space Cl}{1\space mol\space CaCl_2}\).

Step2: Calculate the moles of \(Cl\)

Multiply the moles of \(CaCl_2\) by the conversion factor: \(n_{Cl}=2.2\space mol\space CaCl_2\times\frac{2\space mol\space Cl}{1\space mol\space CaCl_2}\)

$$n_{Cl}=2.2\times2 = 4.4\space mol$$

Answer:

\(4.4\space mol\)