Question

Calculate the number of moles in 100 g of CaCo3​

Answer 1

⭕️given mass of CaCO3 

=100g

⭕️ CaCO3 mass Ca=40u, C=12u, O=16u

⭕️No. of moles

=Given mass /molar mass

                       

=100/100

                     

=1mol

⭕️ To find the molecular mass You add up molar masses of Ca, С and o3

⭕️ They are 40.1, 12 and 16 g/mol respectively.

⭕️So the molar mass of CaCO3 is:-

= 40.1+12+3x16

=100.1 g/mol.

$\huge\bf{\boxed {\red{\mathfrak{thank \: you :)}}}}$

Answer 2

Answer:

given mass of CaCO3

=100g

⭕️ CaCO3 mass Ca=40u, C=12u, O=16u

⭕️No. of moles

=Given mass /molar mass

=100/100

=1mol

⭕️ To find the molecular mass You add up molar masses of Ca, С and o3

⭕️ They are 40.1, 12 and 16 g/mol respectively.

⭕️So the molar mass of CaCO3 is:-

= 40.1+12+3x16

=100.1 g/mol.