Questions: Complete the last two columns of the table. The molar masses of the substances are given in parentheses. Use the space below to show your work Quantity Number of moles Number of Particles a. Atoms is 14.0 g of neon, Ne(20.18 g / mol)

Solution Steps

To find the number of moles of neon (\(\text{Ne}\)) in 14.0 g, use the formula:

\[ \text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]

Substitute the given values:

\[ \text{Number of moles} = \frac{14.0 \, \text{g}}{20.18 \, \text{g/mol}} \]

Calculate the number of moles:

\[ \text{Number of moles} = 0.693 \, \text{mol} \]

To find the number of particles (atoms) in the moles of neon, use Avogadro's number (\(6.022 \times 10^{23}\) particles/mol):

\[ \text{Number of particles} = \text{Number of moles} \times 6.022 \times 10^{23} \, \text{particles/mol} \]

Substitute the calculated number of moles:

\[ \text{Number of particles} = 0.693 \, \text{mol} \times 6.022 \times 10^{23} \, \text{particles/mol} \]

Final Answer