Question

19. At atmospheric pressure, a sample of oxygen gas has a volume of 1.5 liters at 20°C. What volume, in liters will this gas occupy if the temperature is raised to 80 C? Assume ideal gas behavior a. 1.8 t b. 2.7L c. 3.9 L d. 6.0L e. 9.0L 20. How many grams of hydrogen, H2, are present in a 10.0 L gas cylinder at 25 C when the H2 pressure is 4.0 atm? Assume ideal gas behavior. a. 1.7 g b. 3.3 g c. 5.0g d. 6.7 g e. 7.1g 21. If at con stant temperature, a 2.0 L sample of O2 gas at 1.0 atm is compressed until the volume decreases to 0.5 L, what is the new pressure? Assume ideal gas behavior. a. 1.0L b. 2.0 L c. 3.0L d. 4.0 L e. None of the above.

Answer 1

2- 2. 2 1.SL 353 k 20) (0.0 L volume py 0.0821 x 28