Question

Calculate the formula mass of Sodium Carbonate

Answer 1

mass of Na = 23u
mass of C=12u 
mass of O = 16u
therefore,
Na₂CO₃ = 23*2+12*1+16*3 = 46+12+48=106 u ..
 i hope it helps....

Answer 2

Given: Given compound is sodium carbonate.

To find: We have to find the formula mass.

Solution:

To determine the formula mass of sodium carbonate we have to follow the below steps-

The chemical formula of sodium carbonate is $Na_2CO_3$.

The atomic mass of Na is 23.

The atomic mass of C is 12 and the atomic mass of Oxygen is 16.

The compound has two Na, one C and three oxygen atoms.

Thus its formula mass will be-

$23 \times 2 + 12 + 16 \times 3 \\ = 46 + 12 + 48 \\ = 106$

The formula mass of sodium carbonate is 106.