Part A A cylinder, with a piston pressing down with a constant pressure, is fill

Question

Part A A cylinder, with a piston pressing down with a constant pressure, is filled with 2.20 moles of a gas (n1), and its volume is 50.0 L (V1). If 0.500 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. Part B A sample of gas in a cylinder as in the example in Part A has an initial volume of 60.0 L , and you have determined that it contains 1.10 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 15.0 L . How many moles of gas (n2) remain in the cylinder? Express your answer with the appropriate units.

Explanation / Answer

A)

n1 = 2.2 mol

V1 = 50 L

n2 = 2.2-0.5 = 1. 7 mol left

V2 = ?

apply avogrados law

V1/n1 = V2/n2

50 / 2.2 = V2/1.7

V2 = 1.7/2.2*50 = 38.63 L

b)

V1 = 60 L

n1 = 1.1

V2 = 15 L

n2 = ?

calculate via avogrados law

V1/n1 = V2/n2

n2 = V2/V1*n1 = 15/60*1.1 = 0.275 mol

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.