Question

Number of molecules in 16 grams of h2co3

Answer 1

1 mole =6.023×10 root 23. 16 x 10root 23=160root 23 mole.

Answer 2

For this one u can work out the amount of moles in h2co3 by using moles=mass/mr(of h2co3 is 52)

so 16/62=0.258moles then u use the equation

number of particle = moles × 6.02×10^23

=0.258×6.02 ×10^23

=1.55×10^23 molecules.

hope this helps