Chrome Master ingchemistry: HW 18 Gases Chapter 8A Secure https Intro Chem Winte

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Chrome Master ingchemistry: HW 18 Gases Chapter 8A Secure https Intro Chem Winter 2017 HW 18 Gases Chapter 8A t Core Chemistry Skill: Using the Gas Law Relating Pressure and Volume Resources previous l 7 of 13 l net Pressure and Volume Part A For a certain amount of gas at constant temperature, the A sample of a gas at room temperature occupies a volume of 14.0L at a pressure of 442 torr. lf he pressure changes to 2210 torr, with no pressure and volume have an inverse relationship (Eigure change in the temperature or moles of gas, what is the new volume, Vi? Express your answer with the appropriate units. PiVi P2V2 In an ideal gas, particles are considered to interact only when they collide, with no loss in energy or speed occurring during the collision. Studying ideal gases allows for simplifications, such as Boyle's law. Value Units Figure 1 of 1 Submit Hints My Answers Give Up Review Part Part B If the volume of the original sample in Part A (Ph 3442 torr. Vi 314.0 L)changes to 70.0 L. without a change in the temperature or moles of gas molecules, what is the new pressure, Pr? Express your answer with the appropriate units. o Value Units Larger volume Smaller volume Higher pressure Lower pressure Submit Hunts My Answers Give Up Review Part rle FAArlhark

Explanation / Answer

According to Boyle's law

P1V1 = P2V2 at constant temperature and constant number of moles of gas.

part A

given P1=442 torr and V1 = 14L

and P2 = 2210torr V2 = ?

Thus 442torr x 14 L = 2210 torr x V2

thus V2 = 2.8L

Part B

Now P 1= 442 torr and V1 = 14 L

P2 =? and V2 = 70 L

The 442 torr x 14 L = P2 x 70L

Hence P2 = 88.4 torr

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