A balloon originally had a volume of 4.39 L at 44 °C and a pressure of 729 torr. The balloon must be cooled to ________ °C to reduce its volume to 3.85 L (at constant pressure). a.546 b.-278 c.0.00 d.278 e.5.00

Samples of Ar gas and Ne gas are both at 300 K. The average kinetic energy of the Ar is ________the average kinetic energy of the Ne. A.smaller than B. larger than C. the same as  The average speed of the Ar is _______ the average speed of the Ne. A.smaller than B. larger than C. the same as  The rate of effusion of the Ar is _______ the rate of effusion of the Ne. A.smaller than B. larger than C. the same as  2. An unknown gas diffuses at a rate of 14.8 mL/s. Under the same conditions of temperature and pressure CO2 gas diffuses at a rate of 11.4 mL/s. What is the molar mass of the unknown gas? _________g/mol

The average tire pressure for an automobile is 38.5 psi which is how many atmospheres of pressure? A. 1.77 x 10-3 atm B. 566 atm C. 2.62 atm D. 1.99 atm O A В

Calculate which of the following would show the highiest pressure? A. 315 mmHg B. 21.4 in Hg C. 64199 Pa D. 0.627 atm E. 12.3 psi

You place a balloon in a closed chamber at standard temperature and pressure (STP). You decrease the pressure by half. What happens to the balloon? A. It expands to four times its original volume. B. It doubles in volume. C. It decreased to one-half of its original volume. OD. It stays the same volume. 10690 WITH 18 18

4. How many moles of H2 gas would be present if 9.0 L of the gas has a pressure of 2.0 atm and a temperature of 300K? A. 0.37 mol B. 0.73 mol C. 1.46 mol D. 2.92 mol

12. If a gas at 300K occupies 3.60 liters at a pressure of 1.00 atm, what will be its new pressure if the volume is compressed to 2.0 liters at a temperature of 450K? A. 0.83 atm B. 1.2 atm C. 2.7 atm D. 10.8 atm

If 3.220 L of fluorine gas reacts with excess xenon gas both at 2.000 atm and 450.0 K, how many grams of xenon tetrafluoride can form? The balanced equation is 2 F2 (g)   +  Xe (g)   -->    XeF4 (s) a. 58.04 g b. 18.08 g c. 10.95 g d. 29.02 g e. 0.1744 g f. 14.51 g g. 21.89 g h. 47.53 g i. None of these j. 0.1056 k. 36.15 g

A scuba driver carries a sealed flexible empty plastic bottle as he/she dives. The bottle has a volume of 0.480 L when the diver is at a depth where the pressure is 3.45 atm. a. Calculate the normal volume of the bottle at a pressure of 1.00 atm (which the pressure on the surface) b. At a different depth the bottle has a volume of 0.420 L. Calculate the pressure at that depth. atm