Question

find the a)number of molecules in 73g of hcl b)mass of 0.5 mole of 02​

Answer 1

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.

Answer 2

Explanation:

a) molar mass of hcl= 36.5g

so, 36.5g contain 6.023 x 10^23 molecules

so, 73 g contain 6.023 x 10^23 x 73 / 36.5 molecule

= 12.04 x10^23

b) mass of 1 mole of o2 = 32g

so, mass of 0.5 mole = 32/2 = 16g