Question

Answer the questions in short

1)What is mass number?
2)State Avogadro s law.
3)What is Relative molecular mass?
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Answer 1

1)The total number of protons and neutrons in an atom is called mass number.

2) A modern state Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

3)The relative mass is the ratio of the average mass of one molecule of an element or compound to one twelfth of the mass of an atom of carbon-12.

Answer 2

Mass numbers are also called atomic numbers

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