Remember to use three significant figures for all numerical answers. The margin

Question

Remember to use three significant figures for all numerical answers. The margin of error for each numerical answer is 5%. To avoid rounding errors use the unrounded intermediate values in What is the final volume after you reach the final temper our final calculations. The initial volume of gas is 5.00 L, the initial temperature of the gas is 27.0 degree C and the system is in equilibrium with an external pressure of 1.2 bar (given by the sum of a 1 bar atmospheric pressure and a 0.2 bar due to a brick that rests on top of the piston) Then, as you did in Exercise 1, you heat the gas slowly until the temperature reaches 52.2 degree C How many moles of gas are there in the container? What is the final volume after you reach the final

Explanation / Answer

Using Gas Law:

PV = nRT

So, initially:

(1.2*10^5)*(5*10^-3) = n*8.314*(27+273)

So, n = number of moles = 0.24 moles

Now, after raising the temperature:

(1.2*10^5)*V = 0.2406*8.314*(52.2+273)

So, V = 0.00542 m3

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