Question

how many moles are in 3.61 x 10^24 molecules of ch3oh?
? mol ch3oh
remember: 1 mole = 6.02 x 10^23 molecules

Explanation:

Step1: Recall mole - molecule conversion

We know that 1 mole of any substance contains $6.02\times 10^{23}$ molecules. Let $n$ be the number of moles and $N$ be the number of molecules. The formula is $n=\frac{N}{N_A}$, where $N_A = 6.02\times 10^{23}\text{ molecules/mol}$.

Step2: Substitute the given values

Given $N = 3.61\times 10^{24}$ molecules. Then $n=\frac{3.61\times 10^{24}\text{ molecules}}{6.02\times 10^{23}\text{ molecules/mol}}$.

Step3: Perform the calculation

$n=\frac{3.61\times 10^{24}}{6.02\times 10^{23}}=\frac{3.61}{6.02}\times10^{24 - 23}= 6$ mol.

Answer:

6