I. Problem Solving: Gas Laws Direction: Solve the following problems by showing complete solution. Final answer must contain correct number of significant figures. 1. Calculate the pressure (in torr) exerted by 1.58 moles of the gas in a steel vessel of volume 8.43 L at 86.5 C. 2. A lamp containing a helium with a pressure of 2.20 atm at 18C was heated to 65C at constant volume. Calculate the final pressure in atm. 3. Calculate the density of a 34.5 mg gas in a 1.00 liter can. 4. A 56.4 L ethylene is heated from 25C to 78C at constant pressure. Calculate the final volume of the gas. 5. Calculate the temperature in Celsius of a 2.45 g of carbon dioxide in a container having a volume of 345.6 ml and a pressure of 789 torr