CHEM HELP!? what is the pressure of the gas?

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CHEM HELP!? what is the pressure of the gas?

A 4.40 g piece of solid CO2 (dry ice) is allowed to vaporize (change to O2 (g)) in a balloon. The final volume of the balloon is 1.00 L at 300 K. What is the pressure of the gas?

1) 0.122 atm
2) 122 atm
3) none of these
4) 2.46 atm
5) 246 atm

2007-11-18 11:36:27 · 3 answers · asked by Anonymous123 1 in Science & Mathematics ➔ Chemistry

3 answers

4) 2.46 atm

2007-11-20 12:38:14 · answer #1 · answered by Stan 1 · 0⤊ 0⤋

122

2007-11-18 20:42:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋

The molar mass of CO2 is 44 g/mol. Thus 4.40g CO2 is 0.1 mole of CO2. Use ideal gas law, we can figure out the result immediately:
P = nRT/V = 0.1*0.08206*300 = 2.46 (atm)

2007-11-20 03:30:15 · answer #3 · answered by Hahaha 7 · 0⤊ 0⤋