Question

Learning Goal: To apply the ideal gas law to problems involving temperature, pressure, volume, and moles of a gas. The four properties of gases (pressure P, volume V, temperature T, and moles of gas n) are related by a single expression known as the ideal gas law: PV=nRT The variable R is known as the universal gas constant and has the value R=0.0821 L⋅atm/(mole⋅K). The units of R dictate the units for all other quantities, so when using this value of R, use units of atmospheres for pressure, liters for volume, and kelvins for temperature.

Review Constants Periodic Table A balloon is floating around outside your window. The temperature outside is 21 °c, and the air pressure is 0.700 atm. Your neighbor, who released the balloon, tells you that he filled it with 3.40 molesof gas. What is the volume of gas inside this balloon? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 123+ ? Vballoom Value Units Submit Part B A 12.0 L gas cylinder is filled with 5.80 molesof gas. The tank is stored at 25°C. What is the pressure in the tank? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 123+ OIB? Pank Value Units Submit Part C A 220. L kiln is used for vitrifying ceramics. It is currently operating at 1295 °C, and the pressure is 1.050 atm. How many moles of air molecules are within the contines of the kiln? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 123+ Os ? Pais Value Units Submit Part D A 18.0 L gas cylinder has been filled with 5.00 molesof gas. You measure the pressure to be 3.10 atm. What is the temperature inside the tank? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) Plants Value Units

Answer 1

Review I Constants I Periodic Table A balloon is floating around outside your window. The temperature outside is 21 C, and the air pressure is 0.700 atm. Your neighbor, who released the balloon, tells you that he filled it with 3.40 molesof gas. What is the volume of gas inside this balloon? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) From Ideal gas equation PV nRT volume, V nRT/P 3.40*0.0821*294/0.700 = 117 L 123+ VballonValue Units Submit Part B A 12.0 L gas cylinder is filled with 5.80 molesof gas. The tank is stored at 25 °C. What is the pressure in the tank? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) I? 123+ From ideal gas equation , P =nRT/V P 5.80 0.0821*298/12 = 11.8 atm Units Pank Value Submit Part C A 220. L kiln is used for vitrifying ceramics. It is currently operating at 1295 C, and the pressure is 1.050 atm. How many moles of air molecules are within the confines of the kiln? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) From ideal gas equation , n PV/RT n 1.05*220/(0.0821*1568) = 1.79 moles 123+ N Value Units Пai Submit Part D A 18.0 L gas cylinder has been filled with 5.00 molesof gas. You measure the pressure to be 3.10 atm. What is the temperature inside the tank? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) form ideal gas equation, T PV/nT= 3.10*18/(0.0821*5) 136 K I ? 123+ Value Ttank Units