Molarity Intro   M= Molarity(concentration)   g= grams(mass)        L= liters(volume)               mol=moles

              *if volume is in mL then convert

Solving for concentration means finding Molarity

1.  What is the concentration (Molarity) of a solution that has a volume of .4L that contains 25.6g of Sodium Oxide? 1M

____________Compound     ____________Molar Mass calculations    ____________________________  Calculate the Moles

__________________Moles  =                                      M                     Answer with sig figs=

                                     Liters

2.  What is the concentration of a 550 ml solution that contains 25.6g of Potassium Hydroxide?  .83M

__________________Compound     __________________Molar Mass calculations          _____________________________________Calculate the Moles

__________________Moles  =                                      M                     Answer with sig figs=

                                     Liters

3.  What is the concentration of a  2.8 L solution that contains 432 g of Iron(III) Carbonate ? .53M

____________________Compound    __________________Molar Mass calculations           ___________________________________Calculate the Moles

__________________Moles  =                                      M                     Answer with sig figs=

                                     Liters

Solving for mass (grams)            

4.  How many grams of Aluminum Sulfide are needed to make 4.8 Liters of 5 M concentrated solution? 4000g

______________Moles =              M            

                            Liters

_____________Compound ___________Calculate the  Molar mass  ___________________________Calculate the grams

Answer with sig figs=

5.  How many grams of Magnesium Phosphate are needed to make 500ml of 2.5 M concentrated solution?  300g

______________Moles =              M          

                            Liters

____________Compound  ____________Calculate the  Molar mass    ___________________________Calculate the grams

Answer with sig figs=

6.  How many grams of Beryllium Oxide are needed to make 1.35 Liters of 8.3 M concentrated solution? 280g

______________Moles =              M            

                            Liters

____________Compound _________________Calculate the  Molar mass ________________________Calculate the grams

 Answer with sig figs=

Solving for volume (liters)

7.  How many liters of 6 M solution can be made using 300 grams of Sodium Chloride? .9L

____________Compound  ____________Molar Mass calculations     ____________________________Calculate the Moles

______________Moles =              M          

                            Liters                                                                          

answer with sig figs =

8.  How many liters of 2.0 M solution can be made using 125 grams of Copper (II) Sulfate? .39L

 ____________Compound _____________Molar Mass calculations      __________________________Calculate the Moles

______________Moles =              M            

                            Liters                                                                            

answer with sig figs =

Solving for ????????

9.  What is the mass of a Magnesium Fluoride needed to make 8.0 L of 1.8 M solution?

10.  What is the volume of a 6 M solution that contains 475 grams of Calcium Nitride?

11.  What is the concentration of a  2 L solution that contains 45.8 grams of Beryllium Hydroxide ?

12.  What is the mass of a solute used in a 2L bottle of 3M solution of that contains sugar (sucrose) water?

13.  What is the volume of solution needed to produce a .50M solution, if you start with 20.5 grams of NaOH?

14.  What is the concentration of a 2.8L solution that has 65.3 grams of Magnesium Phosphate in it.

15.  What volume of solution is produced if it has a concentration of 10.5M solution that has 12 grams of magnesium chloride in it?

9.  890g        10. .5L                 11. .5M         12.  2000g        13.  1.0L        14. .089L        15.  .012L