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# Find the pressure if you have 5L of carbon dioxide at 20 C weigh 10 g.?

The mathematical form of the Ideal Gas Law is... More
Convert the 10 g of CO2 to moles. Then, plug this into PV=nRT. R=.0821 and then you will find pressure in the atm unit. Convert 20 degrees celsius to Kelvin by adding 273.15 to it.
Source(s):

10g CO2 * 1 mol CO2 / 44g CO2 = .227 mol CO2 Ideal gas law: PV = nRT, where P is pressure, V is volume in liters, n is number of moles, R is the gas constant (if pressure is in atm's, R is .0821), and T is temperature in Kelvins (C + 273). P(5) = (.227)(.0821)(20 + 273) P = 1.093 atm
Answered By: Some Body - 3/13/2008

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