1. Find the molarity of a solution that is prepared by dissolving 12
Find the molarity of a solution that is prepared by dissolving 12.0g of sodium hydroxide in 325mL of water.
- write out formula
- substitute into formula or set up cancellation
- calculate molar mass if needed; write correct answer with units

2. 0.92M NaOH

3. How many moles of calcium sulfate are in 425mL of 0
How many moles of calcium sulfate are in 425mL of 0.65M calcium sulfate solution?
-write out formula
-substitute into formula or set up cancellation
-calculate molar mass if needed; write correct answer with units

4. 0.28 moles CaSO4

5. What volume of 0. 40M lithium nitrate solution can be made using 2
What volume of 0.40M lithium nitrate solution can be made using 2.0moles of lithium nitrate?
Green: write out formula
Black: substitute into formula or set up cancellation
Red: calculate molar mass if needed; write correct answer with units

6. 5L

7. What mass of lithium nitrate must be dissolved in 250mL of water to make a 0.80M solution?
Green: write out formula
Black: substitute into formula or set up cancellation
Red: calculate molar mass if needed; write correct answer with units

8. 13.8g LiNO3

9. What volume of water is also needed?
What volume of 0.80M solution is needed to prepare 425mL of a 0.65M solution?
What volume of water is also needed?
Green: write out formula
Black: substitute into formula or set up cancellation
Red: calculate molar mass if needed; write correct answer with units

10. 345mL solution
= 80mL water

11. Find the molarity of a sodium hydroxide solution if enough water is added to 325mL of 0.90M solution to bring the volume to 625mL.
Green: write out formula
Black: substitute into formula or set up cancellation
Red: calculate molar mass if needed; write correct answer with units

12. 0.468M

13. Find the molarity of a sodium hydroxide solution after 250mL of water is added to 400mL of 2.2M sodium hydroxide.
Green: write out formula
Black: substitute into formula or set up cancellation
Red: calculate molar mass if needed; write correct answer with units

14. 1.35 M

15. A student places an iron wire in a solution of 1.3M sulfuric acid.
2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2
A student places an iron wire in a solution of 1.3M sulfuric acid.
What volume of 1.3M sulfuric acid would be needed to react with 2.8g of iron?
Black: label given and unknown amounts of reactants/ products
Red: create the bridge to calculate the unknown

16. .06 L

17. A student places an iron wire in a solution of 1.3M sulfuric acid.
2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2
A student places an iron wire in a solution of 1.3M sulfuric acid.
What mass of iron is needed to react with 45.0 ml of 1.3 sulfuric acid?
Black: label given and unknown amounts of reactants/ products
Red: create the bridge to calculate the unknown

18. 5.7 g

19. Lithium is mixed with calcium carbonate.
-Write the reactants
-predict the products
-Identify reaction type
- Predict states of matter for each substance

20. 2Li (s) + CaCO3 (aq) → Li2CO3 (aq)+ Ca(s)
Single replacement

21. Nickel (II) nitratereacts with Sodium phosphate.
-Write the reactants
-predict the products
-Identify reaction type
- Predict states of matter for each substance

22. 3Ni(NO3)2 (aq) + 2Na3PO4 (aq → Ni3(PO4)2(s)+ 6NaNO3(aq)
Single replacement