10.00 points Ch. Ex. 38 -Ideal Gas Law: Solve for Moles Question Enter your answ

Question

10.00 points Ch. Ex. 38 -Ideal Gas Law: Solve for Moles Question Enter your answer in the provided box. In preparation for a demonstration, your professor brings a 1.50-L bottle of sulfur dioxide into the lecture hall before class to allow the gas to reach room temperature. If the pressure gauge reads 386 psi and the lecture hall is 24 °C, how many moles of sulfur dioxide are in the bottle? In order to solve this problem, you will first need to caleulate the pressure of the gas. Hint: The gauge reads zero when 14.7 psi of gas remains. mol

Explanation / Answer

According to ideal gas equation:

PV=nRT

(400.7 psi) (1.50 L) = (n moles) (1.206 psi Litre/ mol K) (297K)

R = 1.206 psi.L/mol.K

moles of gas = 1.678 moles.

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