Question

nahco₃ + hcl → nacl + h₂o + co₂
nahco₃: 84.01 g/mol
a particular sealed container can hold 0.261 mol co₂ gas. what mass of nahco₃ is needed to generate the co₂?
? g nahco₃
hint: use stoichiometry.
mass nahco₃ (g)
submit

Explanation:

Step1: Find mole ratio of NaHCO₃ to CO₂

From balanced equation: 1 mol NaHCO₃ → 1 mol CO₂, ratio = 1:1
Moles of NaHCO₃ = moles of CO₂ = 0.261 mol

Step2: Calculate mass of NaHCO₃

Mass = moles × molar mass
Mass = 0.261 mol × 84.01 g/mol ≈ 21.9 g

Answer:

21.9