Question

Q22. Define mole. What are two things that a mole represents. How many moles of
oxygen atoms are present in 1 mole of CO2.
mber of atoms?​

Answer 1

Answer:

e.g. (i) Mr(CO2) = 44.0 thus 44.0 g of carbon dioxide contains 6.02 x 1023 carbon dioxide molecules or one mole of carbon dioxide molecules.

Explanation:

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Answer 2

Answer:

The mole is the unit of measurement for amount of substance in the International System of Units. A mole of a substance or a mole of particles is defined as containing exactly 6.02214076×10²³ particles, which may be atoms, molecules, ions, or electrons.A mole represents two things:

It represents a definite amount of the substance i.e. an amount of substance equal to its gram atomic mass or gram molecular mass.

It represents a definite number (6.022 × 1023) of atoms, molecules or ions of a substance.

a)we see 1 molecule of CO2 contains two oxygen atoms. so, 1 mole of CO2 molecule contains . (b) 1 molecule of H2SO4 contains 4 atoms of oxygen so, 1 mole of H2SO4 contains . (c) 1 molecule of Al2O3 contains 3 atoms of oxygen.

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