Answer :

Certainly! Let’s calculate the number of molecules in 0.00506 moles of H₂O step-by-step.

1. Understand the Problem:
- We are given a certain number of moles of water (H₂O) and need to find out how many individual water molecules this quantity represents.

2. Given Data:
- Number of moles of H₂O = 0.00506

3. Avogadro's Number:
- Avogadro's number is [tex]\(6.02214076 \times 10^{23}\)[/tex] molecules per mole. This number tells us how many molecules are present in one mole of a substance.

4. Calculation:
- To find the number of molecules, we multiply the number of moles by Avogadro's number:
[tex]\[ \text{Number of molecules} = \text{Number of moles} \times \text{Avogadro's number} \][/tex]
- Plug in the values:
[tex]\[ \text{Number of molecules} = 0.00506 \times 6.02214076 \times 10^{23} \][/tex]

5. Result:
- After performing the multiplication:
[tex]\[ \text{Number of molecules} \approx 3.0472032245600003 \times 10^{21} \][/tex]

Therefore, there are approximately [tex]\(3.0472032245600003 \times 10^{21}\)[/tex] molecules in 0.00506 moles of H₂O.

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