You don't have the initial volume of HCl. How are you supposed to dilute it?
Well the set up is this-
A 0.5215-g sample of CaCO
3 is dissolved in 12
M HCl and the resulting solution is diluted to 250.0mL in a volumetric flask.
Then there are 3 questions-
a. how many moles of CaCO
3 are used (formula mass = 100.1) i got 5.210 moles
b. what is the molarity of the Ca
2+ in the 250 mL of solution. I got .84
Mc. how many moles of Ca
2+ are in the 25.0 mL aliquot of the solution in 1b. I got 2.08x10 -2 moles.
Did i answer those correctly (showed work in previous post)?