Calculate the pressure of the ammonia inside the flask. How many molecules of N2 gas can be present in a 2.5 L flask at 50(C and 650 mmHg? A.Ē.1 ( 10-23 molecules B.Ĕ.9 ( 1022 molecules C.ē.1 ( 1023 molecules D.ē.6 ( 1025 molecules E.Đ.081 molecules 19.Ĝalculate the mass, in grams, of 2.74 L of CO gas measured at 33(C and 945 mmHg. How many moles of gas were collected? A.Đ.95 mol B.đ.05 mol C.đ2.5 mol D.Ē2.4 mol E.ė24 mol 18. After purification its volume was found to be 25.0 L. A.Đ.060 L B.đ.34 L C.đ6.9 L D.Ē4.2 L E.ė34 L 17.Ě gas evolved during the fermentation of sugar was collected at 22.5(C and 702 mmHg.

59(C 14.Ět what temperature will a fixed mass of gas with a volume of 125 L at 15(C and 750 mmHg occupy a volume of 101 L at a pressure of 645 mm Hg? A. What is the volume of 0.125 mol of this gas at the same temperature and pressure? A.Đ.0512 L B.Đ.250 L C.Đ.305 L D.Ĕ.01 L E.đ9.5 L 13.Ět what temperature will a fixed amount of gas with a volume of 175 L at 15(C and 760 mmHg occupy a volume of 198 L at a pressure of 640 mm Hg? A.Ē74(C B.Ē14(C C.đ14(C D.đ(C E. A.đ.0 atm B.đ.35 atm C.Ę.8 atm D.Đ.738 atm E.Đ.114 atm 12.Đ.820 mole of hydrogen gas has a volume of 2.00 L at a certain temperature and pressure. The temperature of an ideal gas in a 5.00 L container originally at 1 atm pressure and 25(C is lowered to 220 K. Calculate the final volume of the bubble if its initial volume was 2.1 mL. If the pressure on a gas sample is tripled and the absolute temperature is quadrupled, by what factor will the volume of the sample change? A.đ2 B.Ĕ/3 C.ē/4 D.đ/3 E.Ĕ 10.Ě small bubble rises from the bottom of a lake, where the temperature and pressure are 4(C and 3.0 atm, to the water's surface, where the temperature is 25(C and the pressure is 0.95 atm. If the pressure of a gas sample is quadrupled and the absolute temperature is doubled, by what factor does the volume of the sample change? A.Ę B.Ē C.đ/2 D.đ/4 E.đ/8 9. If the gas is an ideal gas, what pressure would develop in the can if it were heated to 475(C? A.Đ.095 atm B.Đ.717 atm C.ē.26 atm D.Ĕ.52 atm E.ē4.2 atm 8. The gas pressure in an aerosol can is 1.8 atm at 25(C.

If the gas is in a container that can contract or expand at constant pressure, at what temperature will the N2 occupy 4.80 L? A.đ0(C B.Ĕ0(C C.đ46(C D.ē13(C E.Ė85(C 7.

If 30.0 L of oxygen are cooled from 200✬ to 1(C at constant pressure, what is the new volume of oxygen? A.Đ.150 L B.đ7.4 L C.Ē3.0 L D.ĕ1.8 L E.Ė.00 ( 103 L 6.Ě sample of N2 gas occupies 2.40 L at 20(C. The gas is heated to 220✬ at constant pressure. What volume will it occupy at the same temperature and 380 mmHg? A.Ē,800 mL B.Ē,100 mL C.đ,400 mL D.đ,050 mL E.ė00 mL 4.Ě sample of nitrogen gas has a volume of 32.4 L at 20(C. High compressibility, relatively large distances between molecules AND formation of homogeneous mixtures regardless of the nature of gases 3.Ě sample of a gas occupies 1.40 ( 103 mL at 25(C and 760 mmHg. High compressibility AND relatively large distances between molecules E. Relatively large distances between molecules C.ğormation of homogeneous mixtures regardless of the nature of gases D. Which of the following is/are characteristic(s) of gases? A. Chapter 5 Gases Student: _ 1.Ě pressure that will support a column of Hg to a height of 256 mm would support a column of water to what height? The density of mercury is 13.6 g/cm3 the density of water is 1.00 g/cm3.

733 mmhg to atm