Question
Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution. (b) How many moles of KBr are present in 150 mL of a 0.275 M solution? (c) How many milliters of 6.1 M HCl solution are needed to obtain 0.100 mol of HCl?
Answers
bobpursley
a) molarity= moles/liters convert grams to moles, then solve.
b) same formula, solve for moles
c) sam formula, solve for volume inliters, then convert to ml.
b) same formula, solve for moles
c) sam formula, solve for volume inliters, then convert to ml.
A .105L sample of unknown HNO3 required 46.5mL of .150M Ba(OH)2 for complete neutralization. What is concentration of HNO3