Question

The total number of protons in 10g of caco3 is​

Answer 1

Answer:

Explanation:

The molecular mass of CaCO3=100gmol−1

No. of moles, n=mM=10g100gmol−1=0.1mol

That means there are 0.1⋅6.022⋅1023=0.6022⋅1023=6⋅1022 molecules in 10g.

No. of

Ca atoms in a molecule=1

C atoms in a molecule=1

O atoms in a molecule=3

Total atoms in a molecule=5

Now it's to do with protons. In a molecule of CaCO3 , there are protons

Protons of a Ca atom=20

Protons of a C atom=6

Protons of a O atom=8

Total no. of protons in a molecule=20×1+6×1+8×3=50

So, the total no. of protons in 10g:

no. of protons = 50×6×1022=3×102×1022=3×1024