Question

Calculate the percentage composition of Sodium Carbonate (Na2CO3). List and explain the steps you need to calculate this.

Answer 1

Answer:

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Explanation:

firstly write the mass of all elements

Na=23,C=13,O=16

sodium=23×2=46

carbon=12

oxygen=16×3=48

add all

46+12+48=106

106÷100

1.06%

Answer 2

Explanation:

Percentage Composition or Percentage by Mass or Percentage Formula

This formula represents the mass in gram of the elements that is present in 100 gram of the compound.

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