1 if 30 liters of oxygen gas react with excess carbon

Question

1. If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under the same conditions? 

2 CO _(g) + O_{2 (g)} ____ 2 CO_{2 (g)}

_{a) 1. L} 

_{b) 3.0 L} 

c) 4.5 L

d) 6.0 L

2. Under certain conditions argon (Ar) gas diffuses at a rate of 3.2 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.5 centimeters per second. What is the approximate molar mass of the unknown gas?

a) 10 g/mol

b) 20 g/mol

c) 28 g/mol

d) 56 g/mol

3. Which of the following gases effuses the fastest at a given temperature?

a) Ne

b) CH4

c) Ar

d) H2

4. What is the volume of 3.5 moles of oxygen gas (O₂) at standard temperature and pressure (STP)?

a) 6.4 L

b) 22.4 L

c) 32.0 L

d) 78.4 L