Monday

January 26, 2015

January 26, 2015

Posted by **Sally** on Monday, November 26, 2012 at 4:24pm.

(a) Calculate the new temperature Tf of the gas.______J

(b) Calculate the work done on the gas during the expansion.________kJ

- Physics -
**Elena**, Monday, November 26, 2012 at 5:53pm(a)

Ti=273+7.4=280.4 K

Vi/Ti = Vf/Tf

Vi/280.4 =8 Vi/Tf

Tf=8•280.4 = 2243.2 K

b) p•ΔV=νRΔT

ν =1 mol

p•ΔV= RΔT

W = p•ΔV= RΔT=

= 8.31•(2243.2-280.4)=

=1.63•10⁴ J =16.3 kJ

**Answer this Question**

**Related Questions**

physical biochemistry - One mole of an ideal monatomic gas initially at 300 K is...

physics - A 1.80 mol sample of an ideal diatomic gas at a pressure of 1.20 atm ...

physics- vry urgent - An ideal monatomic gas initially has a temperature of 333 ...

physics - An ideal monatomic gas initially has a temperature of 338 K and a ...

physics - An ideal monatomic gas initially has a temperature of 338 K and a ...

physics - An ideal monatomic gas initially has a temperature of 338 K and a ...

Chemistry - You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure...

chemistry - ideal gas .450 mole initial pressure 16 atm and 290 K expands ...

Chemistry - A quantity of 0.020 mole of a gas initially at 0.050 L and 20 ...

chemistry - A quantity of 0.020 mole of a gas initially at 0.050 L and 20 ...