11101 905346 Ra htt Ideal Gas Laws ± Introduction to the Ideal Gas Law Learning
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Question
11101 905346 Ra htt Ideal Gas Laws ± Introduction to the Ideal Gas Law Learning Goal Part C Toply the ideal gas law to pobiems involving tomperature, pressure, volume, and moles of a is 1.050 atm How many moios of air molecules are within the confines of the kiln? Express your answer to three significant figures and include the View Available Hint(s) The four properties of gasos (pressure P, volume V, temperature T, and moles of gas n) are related by a single expression known as the ideal gas lanw The variable R is known as the unvers al gas constant and has the value R = 0.0821 L-atm/(mole-K) The units of R dictate the units for all other quantities, so when using this value of R, use units of atmospheres for pressure, liters for volume, and kelvins for n,r= 1 Value nits Submit Part D A 140 L gas cylinder has been illed wth 800 moles of gas. You measure the pressure to be 3.20 atm. Wh is the temperature inside the tank? Practice 95%Explanation / Answer
pressure, P = 1.050 atm
volume, V=240L
temperaature, T = 1385oC = 1385 + 273 = 1658K
gas constant, R = 0.082 L. atm/ mol. K
according to the combined gas law, PV =nRT
or, n = PV / RT = (1.050 x 240 L) / (0.082 x 1658) = 1.85 moles of air
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