Calculate the total pressure in atm, in a 6 L flask that contains 4.91 g Ne and 1.76 g Ar. The temperature of the gasses is 45 degrees Celsius.
2006-10-18 08:15:15 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Argon=39.948g/mol
Neon=20.180g/mol
total mols of gas=4.91/20.180 + 1.76/39.948=0.287
using ideal gas equation P=nRT/V
=0.287 x 8.31(molar gas constant) x 318.15K / 0.006
=27777.77777777Pa
=0.274atm
ideal gas equation requires you to convert volume from litres to cubic meters and degrees celsius to kelvin. pressure is yielded in pascals so use the relation to convret to atm.
1atm=101325Pa
2006-10-18 08:23:51 · answer #1 · answered by Anonymous · 0⤊ 0⤋
To use PV=nRT. P is pressure in atmospheres, V is volume in leters (6 in this case) n is number of moles (in this case of Ne and Ar), R is a constant that you should be given. Make sure you get the constant for atm. and T is temperature in Kelvin. Make sure you add 273 to your Celsius degrees to change it to Kelvin.
2006-10-18 15:27:21 · answer #2 · answered by Unknown 2 · 0⤊ 0⤋
first find the moles of each one
add the number of moles together to get a total mole value
convert celsius to kelvin
PV=nRT
plug in the known values and solve for P
2006-10-18 15:18:00 · answer #3 · answered by Greg G 5 · 0⤊ 0⤋