A0.500-l sample of h2so4 solution was analyzed by taking a 100.0-ml aliquot and adding 50.0 ml of 0.213 m naoh. after the reaction occurred, an excess of oh2 ions remained in the solution. the excess base required 13.21 ml of 0.103 m hcl for neutralization. calculate the molarity of the original sample of h2so4. (sulfuric acid has two acidic hydrogens.)

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.