1. Quiz 2
09/04/08

2. Question 1
Methane (CH4) and oxygen (O2) react to form carbon dioxide (CO2) and water (H2O). What mass of water is formed if 3 g of methane reacts with 12 g of oxygen to produce 8 g of carbon dioxide? The reaction of interest is:
CH4 + O2 → CO2 + H2O
7 g
8 g
12 g
15 g

3. Question 2
What is the atomic number of 4He?

4. Question 3
What is the mass number for Ca-40?

5. Question 4
How many protons are present in 32S?

6. Question 5
How many neutrons are in Sc-45?

7. Question 6
How many electrons are found in a neutral atom of 14C?