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VikaD [51]
3 years ago
13

Determine the number of moles in 4.50 g of H2O

Chemistry
1 answer:
Irina18 [472]3 years ago
7 0

0.25 moles of water (H₂O)

Explanation:

To calculate the number of moles of a particular substance we use the following formula:

number of moles = mass / molecular weight

molecular wight of water (H₂O) = number of H atoms × atomic weight of H + number of O atoms × atomic weight of O

molecular wight of water (H₂O) = 2 × 1 + 1 × 16 = 18 g/mol

number of moles of water (H₂O) = 4.5 / 18

number of moles of water (H₂O) = 0.25 moles

Learn more about:

number of moles

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