Question

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part a
how many moles of tin atoms are in a pure tin cup with a mass of 44.3 g?
express your answer in moles to three significant figures.
number of moles = mol sn
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Explanation:

Step1: Find the molar mass of tin (Sn)

The molar mass of tin (\(Sn\)) is \(M = 118.71\space g/mol\)

Step2: Use the formula \(n=\frac{m}{M}\)

Here, \(m = 44.3\space g\) (mass of tin) and \(M=118.71\space g/mol\) (molar mass of tin).

$$n=\frac{44.3\space g}{118.71\space g/mol}$$

$$n = 0.373\space mol$$

Answer:

\(0.373\space mol\)