How many carbon atoms are present in 5.50 g of C?

Calculate the number of moles of carbon in 5.50 g using the formula: \(\text{moles} = \frac{\text{mass}}{\text{molar mass}} = \frac{5.50}{12.01}\).

Use Avogadro's number, \(6.022 \times 10^{23}\) atoms/mol, to convert moles of carbon to number of atoms: \(\text{atoms} = \text{moles} \times 6.022 \times 10^{23}\).