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Partial Question 7 1 / 10 pts A 15.00 g sample containing mixed alkali and other inert components was dissolved and diluted to 300 mL with water. A 20 mL aliquot was titrated with 5.02 mL of 0.5352 M HCl to reach PHP endpoint. Another 20 mL aliquot was titrated to the BCG endpoint, using up 18.87 mL of titrant in the process. Note: Answer in two decimal places only. If there is no answer, type in 0.00. Use the molar masses indicated in the worksheet. The volume of titrant needed to neutralize NaOH is 5.02 mL. The volume of titrant needed to neutralize Na2CO3 is 9.43 mL. 9.43 The volume of titrant needed to neutralize NaHCO3 is mL. The mass of NaOH is 0.11 g The mass of Na2CO3 is 0.54 8 The mass of NaHCO3 is 0.42 g. The percent weight of NaOH is 0.72 %. The percent weight of Na2CO3 is 3.57 %. The percent weight of NaHCO3 is 2.83 %.