The balanced equation for the reaction is as follows Na₂CO₃ + 2HCl --> 2NaCl + CO₂ + H₂O stoichiometry of Na₂CO₃ to HCl is 1:2 number of Na₂CO₃ moles reacted = molarity x volume number of Na₂CO₃ moles = 0.100 mol/L x 0.750 L = 0.0750 mol according to molar ratio of 1:2 1 mol of Na₂CO₃ reacts with 2 mol of HCl then 0.0750 mol of Na₂CO₃ mol reacts with - 2 x 0.0750 = 0.150 mol molarity of given HCl solution is 1.00 mol/L molarity is defined as the number of moles of solute in 1 L of solution there are 1.00 mol in 1 L of solution therefore there are 0.150 mol in - 0.150 mol / 1.00 mol/L = 0.150 L volume of HCl required is 0.150 L
Answer:An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999.
