Which of the following statements about the mole is false?
a. the size of a mole of atoms has a reasonable mass.
b. a mole of a monatomic element corresponds to one avogadro's number of atoms.
c. one mole of a monatomic element has a mass equal to its atomic mass expressed in grams.
d. one mole of water contains 1/2 mole of oxygen atoms.
e. none of the above

It is false that d. One mole of water contains 1/2 mole of oxygen atoms.

Let's consider which of the following statements about the mole is false.

a. The size of a mole of atoms has a reasonable mass. TRUE. For instance, 1 mole of Na has a mass of 23 grams.

b. A mole of a monatomic element corresponds to one Avogadro's number of atoms. TRUE. A mole of atoms contains 6.02 × 10²³ atoms (Avogadro's number).

c. One mole of a monatomic element has a mass equal to its atomic mass expressed in grams. TRUE. For instance, the molar mass of Na is 23 g/mol and the atomic mass is 23 amu.

d. One mole of water contains 1/2 mole of oxygen atoms. FALSE. The molar ratio of H₂O to O is 1:1. Thus, 1 mole of H₂O contains 1 mole of O.

It is false that d. One mole of water contains 1/2 mole of oxygen atoms.

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The answer is D.

Explanation:

Hope this helps.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.