Predict whether the effects of molecular volume and of intermolecular attractions become more or less significant when the followingchanges are imposed:(a) A gas is expanded to a larger volume at constant temperature.Intermolecular attractions aresignificant, and molecular sizes arev significant.(b) More gas is introduced into a container of constant volume at constant temperature.Intermolecular attractions aresignificant, and molecular sizes aresignificant.more(c) The temperature of a gas increases at constant pressure.lessIntermolecular attractions aresignificant, and molecular sizes aresignificant.

According to the kinetic gas theory, the two faulty assumptions were. There are no forces of…

Answered: Predict whether the effects of…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A 3.85 g sample of a KCl−KClO3 mixture is decomposed by heating and produces 117 mL O2(g), measured at 23.5 ∘C and 110 kPa . 2KClO3(1)→KCl(s)+3O2(g) What is the mass percent of KClO3 in the mixture?
(a) (c) A column of water in a buret is 336 mm Hg high. How high would that column be if it were mercury instead of water? (d) In order for the pressures to be equal, density and height of a column are inversely proportional, therefore the following relationship applies: (denHg)(hHg) = (denH20)(hH20) Note: the density of mercury is 13.6 g/mL and the density of water is 1.00 g/mL. An electrolysis experiment was run for 15 minutes and 45 seconds at an average current of 189 milliamps (mA). The mass lost by the copper anode was 0.0589 grams. (b) Calculate the number of coulombs transferred. (Remember: coulomb = amps x sec) Show full calculation of the height in mercury (remember to use proper significant figures.) Calculate the moles of copper lost from the anode. Based on the moles of copper lost determined in 1c, calculate the moles of electrons transferred. Remember, the reaction at the copper anode is: Cu(s)---> Cu¹² (aq) + 2 e
In an experiment, 5.00 L of N₂ is saturated with water va-por at 22°C and then compressed to half its volume at constant T.(a) What is the partial pressure of H₂O in the compressed gasmixture? (b) What mass of water vapor condenses to liquid?
(a) A piston at 5.7 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to be placed on the piston to force the volume to adjust to 1.54 L? atm(b) A piston at 63.0°C contains a gas that occupies a volume of 2.5 L. To what temperature would the gas have to be heated to increase the volume to 4.1 L at constant pressure? °C(c) A piston at 7395 torr contains a gas that occupies a volume of 4.7 L. What pressure would have to be placed on the piston to force the volume to adjust to 1.69 L? atm
What is the temperature in K of 0.500 mole of neon in a 2.00L vessel at 4.32 bar? R = 0.08314 L· bar/mol·K.
For many purposes we can treat ammonia (NH3) a as an ideal gas at temperatures above its boiling point of -33. °C. 3 Suppose the pressure on a 1.0 m sample of ammonia gas at -2.00°C is reduced to one-third its initial value. Is it possible to change the temperature of the ammonia at the same time such that the volume of the gas doesn't change? If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C. yes no °C x10 S
Refrigerators are usually kept at about 5ﾟC, when Room temperature is about 20ﾟC. If you were to take an empty 2 liter soda bottle at Room temperature and place it in the fridge, would you expect it to contract to 1/4 its original volume?
(a) A volume (25.0 L) of gas at 45 K is heated to 450 K. What volume (in L) does the gas now occupy? (b) A volume (50.0 mL) of gas at 400. °C is cooled to 50. °C. What volume (in mL) does the gas now occupy?
A compressed gas cylinder at 13,700 kPa and 23°C, is in a room where a fire raises the temperature to 450.°C. What is the new pressure of the cylinder, in atm? The volume of the cylinder does not change.
A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium with excess hydrochloric acid and then collecting the hydrogen gas over water in a eudiometer. Based L-atm on experimentally collected data, the student calculates R to equal 0.0832 mol·K L-atm Ideal gas law constant from literature: 0.08206 mol·K (a) Determine the percent error for the student's R-value. Percent error = % (b) For the statements below, identify the possible source(s) of error for this student's trial. The student notices a large air bubble in the eudiometer after collecting the hydrogen gas, but does not dislodge it. The student does not clean the zinc metal with sand paper. The student does not equilibrate the water levels within the eudiometer and the beaker at the end of the reaction. The water level in the eudiometer is 1-inch above the water level in the beaker. The student uses the barometric pressure for the lab to calculate R.
Describe what happens to the average kinetic energy of ideal gas molecules when the conditions are changed as follows:(a) The pressure of the gas is increased by reducing the volume at constant temperature.(b) The pressure of the gas is increased by increasing the temperature at constant volume.(c) The average velocity of the molecules is increased by a factor of 2.

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