[SOLUTION] Temperature Changes

CHE 205 HOME ASSIGNMNET ON CHPATER 5 POINTS 3• SHOW ALL THE CALCULATIONSOF ALL THE QUESTIONS AND SUBMIT AS ONE FILE ONLY.• Choose or solve• SEPARATE PHOTOS OF THE DOCUMENT IS NOT ALLOWED AND NO POINTS WILL BE GIVEN FOR THE SAME.1. The volume of 350. mL of gas at 25°C is decreased to 125 mL at constant pressure. What is the final temperature of the gas?2. A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at -196°C, raising the pressure to 5.20 atm. What is the volume of the balloon in the liquid nitrogen?A) 0.15 LB) 2.1 LC) 4.0 LD) 58 L3. If the number of moles of gas is doubled at constant temperature and volume, the pressure of the gasA) is halved.B) is doubled.C) is quadrupled.D) remains the same.4. One mole of which gas has the greatest density at STP?A) ArB) N2C) COD) All three gases have the same density.5. Which of the following would have a density of 1.21 g/L at 7.0°C and 0.987 atm?A) ArB) N2C) NeD) O26. Chloroform is a volatile liquid once commonly used in the laboratory but now being phased out due to its ozone depletion potential. If the pressure of gaseous chloroform in a flask is 195 mm Hg at 25°C and its density is 1.25 g/L, what is the molar mass of chloroform?A) 10.0 g/molB) 76.3 g/molC) 119 g/molD) none of the above7. Assume that you have a sample of gas in a cylinder with a moveable piston, as shown in diagram (1). The initial pressure, number of moles, and temperature of the gas are noted on the diagram. Which diagram (2)-(4) most closely represents the result of doubling the number of moles of gas while keeping the pressure and temperature constant?A) diagram (2)B) diagram (3)C) diagram (4)8. . If 30.0 L of oxygen are cooled from 200ºC to 1°C at constant pressure, what is the new volume of oxygen?9. . A sample of N2 gas occupies 2.40 L at 20°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) 10°C B) 40°C C) 146°C D) 313°C E) 685°C10. Calculate the density, in g/L, of CO2 gas at 27°C and 0.50 atm pressure.A) 0.89 g/L B) 1.12 g/L C) 9.93 g/L D) 46.0 g/L E) 2.17 kg/L11 . What is T in the table below?V Tinitial: 91.8 mL 365 Kfinal: 45.8 mL T12. . What is the pressure (in atmospheres) of the sample of gas trapped in the closed-tube mercury manometer shown below if h = 23.6 cm?NSWER ————————-13. How many grams of N2O, nitrous oxide, are contained in 500. mL of the gas at STP?14. A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of nitrogen? SHOW THE CALCULATIONA) 2.94 L B) 19.3 L C) 31.4 L D) 54.5 L E) 356 L15. What is final P in the table below? Temperature and number of moles kept constantP Vinitial: 14 atm 1.0 Lfinal: ————- 50. L

 

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