Question

calculate the molar mass of NA2So4 and CACO3​

Answer 1

Answer:Molecular mass of NA2SO4 = 2*molecular mass of Na + molecular mass of S + 4*molecular mass of O

=2*23 + 32+ 4*16

= 46+32+64

=142u

Molecular mass of CaCO3 = molecular mass of Ca + molecular mass of C + 3*molecular mass of O

=40+12+3*16

52+48

100u

Hope it help you!!!

Explanation:

Answer 2

Answer:

• The molecular mass of  $Na_2SO_4$ is 192 g/mol
• The molecular mass of  $CaCO_3$ is 100g/mol

Explanation:

A substances molar mass is the mass of the material that contains one mole of the substance. It is the weight of one mole of something in basic terms. The atomic mass of each substance is multiplied by the subscript of that element in the chemical formula to obtain the molar mass.

1) $Na_2SO_4$

Atomic mass of Na = 23

Atomic mass of S = 32

And atomic mass of O = 16

The molecular mass of sodium sulphate is

$Na_2SO_4$  = 2  × 23 + 32 + 4  × 16

= 46 + 32 + 64

= 192 g/mol

2)$CaCO_3$

The molar mass of Ca is 40

The molar mass of C is 12

The molar mass of O is 16

The molecular mass =40 + 12 + 3 × 16

= 40 + 12 + 48

= 100g/mol