Part A How many milliliters of 0.150 M M HClHCl are needed to completely neutralize 49.0 mLmL of 0.110 M M Ba(OH)2

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Part A
How many milliliters of0.150 M M HClHCl are neededto completely neutralize 49.0 mLmL of0.110 M M Ba(OH)2Ba(OH)2 solution?
Express the volume in milliliters to three significantdigits.
Part B
How many milliliters of0.130 M M H2SO4 H2SO4 areneeded to neutralize 0.190 gg of NaOHNaOH?
Express the volume in milliliters to three significantdigits.
Part C
If 55.8 mLmL of BaCl2BaCl2 solution isneeded to precipitate all the sulfate ion in a756 mgmg sample of Na2SO4Na2SO4, what is themolarity of the solution?
Express the molarity to three significant digits.
Part D
If 42.1 mLmL of0.202 M M HClHCl solution isneeded to neutralize a solution of Ca(OH)2Ca(OH)2, how manygrams of Ca(OH)2Ca(OH)2 must be in the solution?
Express the mass in grams to three significant digits.