Questions: Calculate the number of molecules in 5.00 moles H2S. Express your answer numerically in molecules.

Transcript text: Calculate the number of molecules in 5.00 moles $\mathrm{H}_{2} \mathrm{~S}$. Express your answer numerically in molecules.

Solution

Step 1: Understand the Problem

We need to calculate the number of molecules in 5.00 moles of hydrogen sulfide ($\mathrm{H}_2\mathrm{S}$).

Step 2: Use Avogadro's Number

Avogadro's number is $6.022 \times 10^{23}$ molecules per mole. This constant allows us to convert moles to molecules.

Step 3: Perform the Calculation

To find the number of molecules, multiply the number of moles by Avogadro's number:

\[ \text{Number of molecules} = 5.00 \, \text{moles} \times 6.022 \times 10^{23} \, \text{molecules/mole} \]

\[ = 3.011 \times 10^{24} \, \text{molecules} \]

\[ \boxed{3.011 \times 10^{24} \, \text{molecules}} \]

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