determine the quantity of moles in 1.81 × 10²⁴ atoms of na
determine the quantity of moles in 1.81 × 10²⁴ atoms of na
Answer
Explanation:
Step1: Recall Avogadro's number
Avogadro's number $N_A = 6.022\times 10^{23}\text{ atoms/mol}$.
Step2: Use the formula to calculate moles
The number of moles $n=\frac{N}{N_A}$, where $N = 1.81\times 10^{24}$ atoms. So $n=\frac{1.81\times 10^{24}\text{ atoms}}{6.022\times 10^{23}\text{ atoms/mol}}$.
Step3: Perform the calculation
$n=\frac{1.81\times 10^{24}}{6.022\times 10^{23}}\text{ mol}\approx 3.00\text{ mol}$
Answer:
$3.00$ mol