Question

1. how many molecules of sulfur tetrafluoride are present in 2.73 moles of this compound? 2. how many moles of sulfur tetrafluoride are present in 4.47×10^22 molecules of this compound? use the references to access important values if needed for this question. 9 more group attempts remaining

Explanation:

Step1: Recall Avogadro's number

Avogadro's number ($N_A$) is $6.022\times 10^{23}$ molecules/mol.

Step2: Calculate number of molecules for question 1

We know the number of moles $n = 2.73$ mol. Using the formula $N=n\times N_A$, we have $N = 2.73\times6.022\times 10^{23}$ molecules.
$N=2.73\times6.022\times 10^{23}=1.644006\times 10^{24}$ molecules.

Step3: Calculate number of moles for question 2

We know the number of molecules $N = 4.47\times 10^{22}$ molecules. Using the formula $n=\frac{N}{N_A}$, we substitute $N_A = 6.022\times 10^{23}$ molecules/mol.
$n=\frac{4.47\times 10^{22}}{6.022\times 10^{23}}=\frac{4.47}{60.22}\approx0.0742$ moles.

Answer:

1. $1.64\times 10^{24}$ molecules
2. $0.0742$ moles