Chemistry exam Part 2!!!?

Question

1. What type of bond is formed when 2 Oxygen atoms combine to form molecular Oxygen?

a. Ionic

b. Polar Covalent

c. Covalent

2. Which of the following elements will give up an electron most easily?

a. Cesium

b. Fluorine

c. Hydrogen

d. Oxygen

3. Which of the following pairs of reactants will produce a precipitate when combined ina chemical reaction?

a. Hydrochloric Acid and Sodium Hydroxide.

b. Silver Nitrate and Potassium Cloride.

c. Ammonium Sulfate and Magnesium Chloride.

d. Magnesium metal and Nitric Acid.

4. Aqueous solutions of Ammonium Nitrate and Copper(II)Sulfate are combined. What precipitate (if any) will form as a result of this reaction?

a. Ammonium Sulfate.

b. Copper Nitrate

c. No precipitate will form.

5. Calculate the percent by mass of Oxygen in the folowing compound. H2SO4

a. 32.7%

b. 65.3%

c. 16.3%

d. 98%

6. How many atoms are in 18.0 g of water?

a. 6.02 x 10*23

b. 1.806 x 10*24

c. 1.204 x 10*24

d. None of the above

Answer 1

Study men!

1-A

2-A

3-B

4-C

5-B

6-A

Answer 2

1.Covalent

2.Cesium

3.

4.Ammonium sulphate

5.16.3%

a.6.02x10^23