s Law Relating Volume and Moles Resources « previous | 13 of 23 next >» A cylind
ID: 696833 • Letter: S
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s Law Relating Volume and Moles Resources « previous | 13 of 23 next >» A cylinder, with a piston pressing down with a constant pressure, is filled with 2.00 moles of a gas (ni), and its volume is 50.0 L (V) If 0.400 mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder? Express your answer with the appropriate units Hints V2ValueUnits Submit My Answers Give Up Part B A sample of gas in a cylinder as in the example in Part A has an initial volume of 70.0 L, and you have determined that it contains 2.00 moles of gas. The next day you notice that some of the gas has leaked out. The pressure and temperature remain the same but the volume has changed to 17.5 L. How many moles of gas (n2) remain in the cylinder? Express your answer with the appropriate units Hints T2ValueUnitsExplanation / Answer
A)
we have:
V1 = 50.0 L
n1 = 2.00 mol
n2 = 2.00 - 0.400 = 1.60 mol
we have below equation to be used:
V1/n1 = V2/n2
50.0 L / 2.00 mol = V2 / 1.60 mol
V2 = 40.00 L
Answer: 40.00 L
B)
we have:
n1 = 2.00 mol
V1 = 70.0 L
V2 = 17.5 L
we have below equation to be used:
V1/n1 = V2/n2
70.0 L / 2.00 mol = 17.5 L / n2
n2 = 0.500 mol
Answer: 0.500 mol
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