Question

calculate the molar mass of a molecule of water H2o? find the number of moles and also number of molecules present in 9g of water?
At mass of h=1.
Atomic mass of oxygen =16​

Answer 1

Answer:

(a)

The gram molecular mass is the sum of the gram atomic masses.

The atomic mass of H is 1 ans O is 16.

∴ Gram molecular mass = 2×1+16 =18g.

(b)

Atoms are tiny particles that make up the universe, while molecules are made from atoms

Atoms make up elements whereas molecules make up compounds.

Molecules are made of atoms. Atoms are made of protons, neutrons, and electrons.

Explanation:

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Answer 2

Answer:

hope it helps you

Explanation:

please refer to the attachment