Question

calculate the number of moles in each of the following : (i) 10.0 g of CaCO3 (ii) 1×[10]23 molecules of co2​

Answer 1

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Answer 2

Answer:

1) 0.1mol,2)0.16mol

Explanation:

1)no of moles = given weight /molecular weight

= 10/100

=0.1mol

2)if 1mol gives 6.023*10²³

then x mol gives 1*10²³

x= 1*10²³/6*10²³

=1/6

=0.16mol