Na₂CO₃ + 2 HCl = 2 NaCl + CO₂ + H₂O
106 g Na₂CO₃ -------- 2 x 36.5 g HCl
x g Na₂CO₃ ---------- 750 g HCl
Mass of Na₂CO₃ = 750 x 106 / 2 x 36.5
Mass ( Na₂CO₃) = 79500 / 73
Mass = 1089.04 g
Number of moles = 1089.04 / 106 => 10.27 mols of Na₂CO₃
hope this helps!
