Fill in the following blanks : (a) 1 m...

Fill in the following blanks :
(a) 1 mole contains `"…………."` atoms, molecules or ions of a substance.
(b) A mole represents an `"…………."` number of particles of a substances.
(c ) 60 g of carbon element are `"…………."` moles of carbon atoms.
(d) 0.5 mole of calcium element has a mass of `"…………."`.
(e) 64 g of oxygen gas contains `"…………."` moles of oxygen atoms.

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