Answer
a.
$$ 0.00455 \space mole$$
b.
$$ 0.00322 \space mole$$
c.
$$ 0.00704 \space mole$$
Work Step by Step
a. - Using the molar mass as a conversion factor, find the amount in moles:
$$ 1.00 \space g \times \frac{1 \space mole}{ 219.88 \space g} = 0.00455 \space mole$$
b.
$$ 1.00 \space g \times \frac{1 \space mole}{ 310.18 \space g} = 0.00322 \space mole$$
c.
$$ 1.00 \space g \times \frac{1 \space mole}{ 141.96 \space g} = 0.00704 \space mole$$
