Question

calculate this question

Answer 1

molecular mass caco3=

atomic mass of carbon = 12, oxygen = 16, calcium = 40. Thus, molecular mass of CaCO3 = 40+12+16*3 = 100. This means that when you have avogadro's number (=6.022 * 10^23) of CaCO3molecules then the mass will be 100 grams. 

Molar mass of H2SO4=

Molar mass of H(x2)+Molar mass of Sulphur(x1)+ Molar mass of Oxygen(x4).

This gives us,

[(1*2)+(32*1)+(16*4)]g/mol

=> [2+32+64]g/mol

=> 98g/mol.

HOPE THIS HELPS

Answer 2

1st one is 100gm second one is 98gm