Question

na₂co₃ + 2hcl → 2nacl + h₂o + co₂
na₂co₃: 106 g/mol
a sealed container holds
0.0135 mol co₂ gas. what mass of
na₂co₃ is needed to generate the co₂?
? g na₂co₃

Explanation:

Step1: Relate moles of CO₂ to Na₂CO₃

From reaction: 1 mol Na₂CO₃ → 1 mol CO₂. So moles Na₂CO₃ = moles CO₂ = 0.0135 mol.

Step2: Calculate mass of Na₂CO₃

Mass = moles × molar mass = 0.0135 mol × 106 g/mol.

Step3: Compute the result

0.0135 × 106 = 1.431.

Answer:

1.431