question 02\nhow many formula units are in 12...
question 02\nhow many formula units are in 12.1 moles of nacl?\n4.98x10²² formula units\n7.08x10² formula units\n7.28x10²⁴ formula units
Answer
# Explanation:
## Step1: Recall Avogadro's number
1 mole of any substance contains $6.022\times 10^{23}$ formula - units.
## Step2: Calculate formula - units of NaCl
We have 12.1 moles of NaCl. The number of formula - units $N$ is given by $N = n\times N_A$, where $n = 12.1$ moles and $N_A=6.022\times 10^{23}$ formula - units/mol.
$N=12.1\times6.022\times 10^{23}$
$N=(12.1\times6.022)\times 10^{23}$
$12.1\times6.022 = 72.8662$
So, $N = 7.28662\times 10^{24}\approx7.28\times 10^{24}$ formula - units
# Answer:
$7.28\times 10^{24}$ formula units