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If a cylinder contains 2 moles of a gas at a temperature of 298 K and there is a sudden addition of another mole of gas, what can be said of the pressure of the gas? Select all appropriate answers, A Pressure increases B, Pressure decreases OC. There are less frequent collisions D. The collisions become more forceful O E. There are more frequent collisions OF The collisions become less forcelul QUESTION 10 If a 2.50 L solution is made containing 1.86 moles of Mg2SO4. what will the concentration of long in the solution be? QUESTION 11 to regain equilibrium If the catalyst is decreased in a system, at equilibrium, the system will A shift towards less moles of gas OB.len O shift towards more molus of gas OD.right O E. not shin QUESTION 12 Based on your understanding of the relationship between the pressure of a gas and the collisions of gas particles with the walls of a container. Select all of the following that would result from an decrease in the temperature of a gaseous sample The force of collisions would remain the same The frequency of colisions would decrease The force of collisions would decrease The frequency of collisions would increase The force of collisions would increase The frequency of collisions would remain the same