Help! Physics 1 question. A vertical cylindrical tank contains 1.70 mol of an id

Question

Help! Physics 1 question.

A vertical cylindrical tank contains 1.70 mol of an ideal gas under a pressure of 0.400 atm at 20°C. The round part of the tank has a radius of 10 cm, and the gas is supporting a piston that can move up and down in the cylinder without friction. There is a vacuum above the piston Part A What is the mass of this piston? Express your answer with the appropriate units Value Units Submit My Answers Give U Part B How tall is the column of gas that is supporting the piston? Express your answer with the appropriate units Value Units Submit My Answers Give Up

Explanation / Answer

given are

N=1.70mol

P=0.4atm=4.05*10^4 pa

T=20 degree Celsius=293.15K

R=10cm=0.1m

a)pressure=force/area

pressure=mg/area

m=pressure*area/g

=4.05*10^5*(3,14*0.1^2)/9.8

=129.76—answer

b)PV=nRT

V=NRT/P

=1.70*8.314*293.15/4.05*10^4

=1023.04*10^-4

V=0.1023 m^3

V=3.14*r^2*h

0.1023=3.14*0.1^2*h

H=3.25 m--answer

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