Question

1. calculate how many molecules h₂o in 6.24 moles h₂o.

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hint: refer to the dimensional analysis built in the previous problem.
3.661832076 molecules
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the dimensional analysis was built in the previous problem.
6.24 moles h₂o × 6.022 x 10²³ molecules h₂o / 1 mole h₂o =

Explanation:

Step1: Identify the conversion factor

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

Step2: Set up the dimensional - analysis formula

The number of molecules \(n\) of \(H_2O\) is given by \(n=\text{number of moles}\times N_A\).
If the number of moles of \(H_2O\) is \(n_{mol}=6.24\) mol, then \(n = 6.24\space mol\times6.022\times 10^{23}\space molecules/mol\).

Step3: Calculate the result

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Answer:

\(3.76\times 10^{24}\) molecules