Kurani
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Homework Statement
The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV = nRT, where n is the number of moles of the gas and R = 0.0821 is the gas constant. Suppose that, at a certain instant, P = 9.0 atm and is increasing at a rate of 0.15 atm/min and V = 13 L and is decreasing at a rate of 0.16 L/min. Find the rate of change of T with respect to time at that instant if n = 10 mol. (Round your answer to four decimal places.)
Homework Equations
PV=nRT
dT/dt = ___ K/min
The Attempt at a Solution
I was doing this problem on Web Assign and took the derivative of PV=nRT to get dT/dt=(PV'+VP')/nR and substituted in dT/dt=(9*.16+13*.15)/(10*.0821) and got 4.12911 but web assign doesn't accept it. I am not sure what I'm doing wrong. Thank you to anyone that can point me in the right direction.