Jairo Zuniga

Chemistry

1 July, 00:47

1. Calculate the molarity of 35g of calcium chloride (CaCl2) that is dissolved in 850ml of water. (Calculate moles first)

a. 0.27M

b. 0.38M

c. 0.32M

d. 0.80M

2. Calculate the molarity of 90g of copper sulfate (CuSO4) when dissolved in 5 L of water.

a. 0.112M

b. 2.8M

c. 0.56M

d. 0.50M

3. What is the molarity of NaOH if 0.70 moles are dissolved in 250 ml of water?

a. 175,000M

b. 2.8M

c. 0.175M

d. 4M

4. How many moles of Lithium oxide (Li20) are in 2 L of solution with a molarity of 2.0M?

a. 1 mole

b. 2 moles

c. 0.2 moles

d. 4 moles

5. How many moles of NaCl are in 7.5 L of 0.5M?

a. 3.75 moles

b. 15 moles

c. 0.066 moles

d. 2.5 moles