CHEMISTRY EXAM!!!! have fun!?

Question

1. An electron occupying which of the following orbitals would represent the highest energy level?

a. 5f 2

b. 3s 2

c. 2p 6

d. 1s 1

2. Which of the following contains the greatest number of moles.

a. 66 g. of Carbon Dioxide

b. 200 g. of Lead

c. 147 g. of Sulfuric Acid

d. 54 mL of water

3. 2 moles of Lead (II) Sulfide react with an excess of molecular Oxygen to produce Lead (II) Oxide and Sulfur Dioxide gas. A student performing this proceedure produces 312.5 grams of Lead (II) Oxide. What is the percent yield for this reaction?

a. 65.2%

b. 91.4%

c. 82%

d. 70%

4. Atoms of which of the follwing elements are least likely to give up electron(s) when they form ions?

a. Oxygen

b. Chlorine

c. Potassium

d. Sodium

5. Which of the following elements has atoms of the greatest size (atomic diameter).

a. Lead

b. Cesium

c. Calcium

d. Iodine

6. How many electrons does Nitrogen have in it's outer energy level (valence electrons).

a. 3

b. 4

c. 5

d. 7

Answer 1

1.-A

2-D

3-A

4-O (has highest electronegativity followed by Cl)

5-B

6-C

Answer 2

You need to study!

1-A

2-D

3-A

4-O (has highest electronegativity followed by Cl)

5-B

6-C