out or 50 1st attempt Il See Periodic Table See Hint If the temperature of a...
Hot expanding gases can be used to perform useful work in a cylinder fitted with a movable piston, as in the figure below. V2 T2 1st attempt See Periodic Table See Hint If the temperature of a gas confined to such a cylinder is raised from 218°C to 587°C, what is the ratio of the initial volume to the final volume if the pressure exerted on the gas remains constant?
16 Question (1 point) See page 275 1st attempt il See Periodic Table See Hint The air pressure in the tires of an automobile is adjusted to 25.0 psi at a gas station in San Diego, where the air temperature is 68°F. The air in the tires is at the same temperature as the atmosphere. The automobile is then driven east along a hot desert highway, and the temperature inside the tires reaches 137 °F. What is the pressure in...
1st attempt See Periodic Table See Hint A sample of gas trapped by a moveable piston has a volume of 57.0L and a pressure of 2.70 atm at 273 K. If the volume of the gas decreases to 18.0L as the temperature is increased to 328 K, what is the new pressure of the gas? atm
1st attempt W See Periodic Table D See Hint Find the volume of 8.50 mol of an ideal gas at 23.0°C and a pressure of 415 kPa. Use the ideal gas law and R= 0.0821 atm • L/mol • K.
Hot expanding gases can be used to perform useful work in a cylinder fitted with a movable piston, as in the figure below If the temperature of a gas confined to such a cylinder is raised from 2.30 times 10^2 degree C to 692 degree C, what is the ratio of the initial volume to the final volume if the pressure exerted on the gas remains constant?
2nd attempt W See Periodic Table O See Hint A balloon is partly inflated with 4.85 liters of helium at sea level where the atmospheric pressure is 998 mbar. The balloon ascends to an altitude of 3.00 x 10 meters, where the pressure is 863 mbar. What is the volume of the helium in the balloon at the higher altitude? Assume that the temperature of the gas in the balloon does not change in the ascent. 1st attempt Feedback hal...
penalty 13 Question (4 points) See page 289 1st attempt See Periodic Table O Sce Hint A sample of argon gas at STP occupies 15.0 L. What mass of argon is present in the container?
1st attempt di See Periodic Table See Hint In one demonstration of this reaction, 32.00 mL of H2 are collected over water at 25°C. Atmospheric pressure is 759.0 mmHg. How many grams of H2 are collected? g Hydrogen MacBo esc Fl F4 F5 F6 4
1st attempt See Periodic Table See Hint COAST Tutorial Problem Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in humans. The value of AH comb for dimethylphthalate (C10H1004) is -4685 kJ/mol. Assume 0.870 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (Ccalorimeter) is 6.35 kJ/°C at 21.5°C. What is the final temperature of the calorimeter? "С SUBMIT ANSWER 1 OF 5 QUESTIONS COMPLETED < 04/05 >
V 1st attempt . See Periodic Table D See Hint Suppose an oven's radiation wavelength is 0.125 m. A container with 150.00 g of water was placed in the oven, and the temperature of the water rose from 20.0°C to 80.0°C. How many photons of this microwave radiation were required to heat the water? (Assume that all the energy from the radiation was used to raise the temperature of the water.) photons