Posted by Anonymous on Tuesday, September 29, 2009 at 9:19am.
A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0. °C. What is the new pressure?
105 atm
45.5 atm
54.9 atm
23.8 atm
42.7 atm

chem.  Dr Russ, Tuesday, September 29, 2009 at 10:07am
First use school boy logic to dismiss any silly answers. If the temperature has dropped then the new pressure must be less than 50.0 atm. Thus we can dismiss 105 atm, and 54.9 atm.
Use P1/T1=P2/T2
or by inspection the temperature has dropped by approximately a factor of 2 (from 573 K to 273 K) so the pressure is approximately half the starting pressure of 50 atm. Thus the answer must 23.8 atm.
[and no calculator needed!]
Answer This Question
Related Questions
 Chemistry  the solubility of argon in water at 25 degrees celcius is 0.0150M. ...
 chemistry  please can someone help me with these questions? 24) Which ...
 chemistry  A bearthing mixture used by deepsea divers contains helium, oxygen...
 cleveland state university  A sample of gas at 1.3 atm of pressure is in a 2.0 ...
 chemistry  A sample of gas with a volume of 2.0 L exerts a pressure of 1.0 atm...
 CHM  Given the initial concentrations of 0.10 atm NO2 and 0.10 atm N2O4 in a 1....
 chemistry  A sample of argon at 300.°C and 50.0 atm pressure is cooled in the ...
 chemistry  The pressure in a constantvolume gas thermometer is 0.700 atm at ...
 chem  A 75.0 L stainless steel container was charged with 3.00 atm of hydrogen ...
 (122)Chemistry  Science  Consider the following reaction: C(s) + H2O (g) &#...
More Related Questions