Question
GeneralGeneralGeneral

What is the mass of 10 moles of sodium sulphite (Na₂SO₃)?

Verified Answer

The mass of 10 moles of sodium sulphite (Na₂SO₃) is 1260 grams.

Step-by-Step Calculation

1. Find molar mass of Na₂SO₃

  • Sodium (Na) = 23 × 2 = 46
  • Sulphur (S) = 32
  • Oxygen (O₃) = 16 × 3 = 48

Total molar mass = 46 + 32 + 48 = 126 g/mol

2. Use formula

Mass = Number of moles × Molar mass

Mass = 10 × 126 = 1260 grams

Final Answer

Mass = 1260 g

Key Concept

Mass of a substance depends on:

  • Number of moles
  • Molar mass

Practical Insight

This type of calculation is important in:

  • Stoichiometry
  • Chemical reactions
  • Numerical problems in exams