Question

Calculate the number of moles in 1.6x10-2 kg of SO2, 5g of CaCO3 and 10g of NaOH

Answer 1

1.6×10^-2 kg =1.6×10^-2×10^3=1.6×10 =16 gram

No. of moles =16/32 =1/2 mole
5g of CaCO3 =5/100 =0.05 moles
10g of NaOH =10/40 =0.25 moles

Answer 2

1.6x10-²kg

=1.6x10-²×10³

=1.6×10

=16 gram

No. of moles -16/32 =1/2 mole

5g of CaCO3 =5/100 =0.05 moles

10g of NaOH =10/40 =0.25 moles