81.6k views
10 votes
How many molecules in 4.10 mol H2O?

6.02×10^23

1.4×10^23

2.47×10^24

1.15×10^-23



User Marxin
by
7.6k points

1 Answer

10 votes

Answer:

2,47 *
10^(24) (molecules)

Step-by-step explanation:

Avogadro's number is a very important relationship: 1 mole = 6,02 *
10^(23) atoms, molecules, protons, etc.

To convert from moles to molecules, multiply the molar amount by Avogadro's number.

4,1 mol * 6,02 *
10^(23) ≈ 24,7 *
10^(23) = 2,47 *
10^(24) (molecules)

Therefore the third answer is correct

User Runita
by
8.6k points

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