21. A 8.0 L sample at 25 °C and 1.00 atm of pressure contains 0.5 moles of a gas. If an additional 0.75 moles of gas at the same pressure and temperature are added, what is the final total volume of the gas? a. 20 L b. 20 ml c. 30 L d. 25.5 L 22. 7.2 liters of an ideal gas are contained at 4.0 atm and 27 °C. Using the ideal gas law, calculate how many moles of this gas are present. a. 22 mol b. 1.2 L c. 2.1 mol d. 1.2 mol

Question

21.   A 8.0 L sample at 25 °C and 1.00 atm of pressure contains 0.5 moles of a gas. If an additional 0.75 moles of gas at the same pressure and temperature are added, what is the final total volume of the gas?   a.  20 L   b.  20 ml   c.  30 L   d.  25.5 L   22.   7.2 liters of an ideal gas are contained at 4.0 atm and 27 °C. Using the ideal gas law, calculate how many moles of this gas are present.   a.  22 mol   b.  1.2 L   c.  2.1 mol   d.  1.2 mol