Question

1 mole of water molecule at NTP is *
a) 18 amu
b) 6.022*10 23 atom
c) 22.4 L
d) 18 g​

Answer 1

Answer:

d) 18 g

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Explanation:

The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.