Question

Which of the following would weigh the highest?

विकल्प

• 0.2 mole of sucrose (C₁₂ H₂₂ O₁₁)

• 2 moles of CO₂

• 2 moles of CaCO₃

• 10 moles of H₂O

Answer 1

2 moles of CaCO₃

Weight = Numberpf moles × molar mass.
0.2 mole of sucrose (C₁₂H₂₂O₁₁)

= 0.2 × 342
= 68.4 g
2 moles of CO₂ = 2 × 44 = 88 g
2 moles of CaCO3 = 2 ×100 = 200 g
10 moles of H₂O = 10 × 18 = 180 g