# Chapter 5 - Exercises - Page 240c: 46

$$5.39 \times 10^{24} \space atoms \space of \space Fe$$ $$8.953 \space moles \space Fe$$

#### Work Step by Step

- Calculate or find the molar mass for $Fe$: $Fe$ : 55.85 g/mol - Using the molar mass as a conversion factor, find the amount in moles: $$500.0 \space g \times \frac{1 \space mole}{ 55.85 \space g} = 8.953 \space moles$$ $$8.953 \space mole \space \times \frac{6.02 \times 10^{23} \space atoms }{1 \space mole} = 5.39 \times 10^{24} \space atoms$$

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