11.2 Dilutions and Solution Stoichiometry

Dilutions
M1V1 = M2V2
If 10.0mL of 0.40M NaCl is diluted to a total volume of 40.0mL, what is its final concentration?
If 40.0mL of water is added to 10.0mL of 0.40M, what is its final concentration?
Solution Stoichiometry
Pb(NO3)2(aq) + 2HCl(aq) → PbCl2(s) + 2HNO3(aq) MW Pb(NO3)2 = 331.2g/mol
662.4g of Pb(NO3)2 is dissolved in 2.0L water. What volume of 6.0M HCl that must be added to react with it completely?
H3PO4(aq) + 3NaOH(aq) → 3H2O(l) + Na3PO4(aq)
What volume of 0.10M NaOH must be added to react completely with 25mL 0.20M H3PO4?