1.

An atom of neon has a mass of 3.35 xx 10^(-23) g. how many atoms of neon are there in 20 g of the gas ?

Answer»

Solution :Number of ATOMS = `("total mass")/("mass of 1 atom") = (20 g )/( 3.35 XX 10^(-23) g) = 5.97 xx 10^(23)`


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