1) What volume (in liters) of water vapor will be produced when 38 L of H2 and 1

Question

1) What volume (in liters) of water vapor will be produced when 38 L of H2 and 19 L of O2 react according to the equation given below? (assume that the reactants and product are all at the same temperature and pressure.)

       2H2(g)+O2(g)--->2H2O(g)

2) Under constant pressure conditions a sample of hydrogen gas initially at 31C and 7.2 L is cooled until its final volume is 5.7 L what is its final temperature?

3) A gas-filled balloon with a volume of 2.15L at 1.20atm and 20C is allowed to rise to the stratosphere (about 30km above the surface of the earth) where the temperature and pressure are -23C and 3.00*10^-3 atm, respectively. calculate the final volume of the balloon.

4) At a birthday pool party, the temperature is 29.5C and the atmospheric pressure is 765.4mmHg. One of the decoration hellium balloons has a volume of 6.25L. what would be the volume of the balloon if it were submerged in a swimming pool to a depth where the pressure is 922.3mmHg and the temperature is 27.35C?

5) At what temperature (in C) will a sample of gas occupy 92.8L if it occupies 50.0L at 90.0C? (assume constant pressure).

(SHOW WORK, FOR ALL POSSIBLE POINTS)

Explanation / Answer

1) 38 litres

2) (273+31)*5.7/7.2 = 240.67 k

3)2.15* ( (273-23) / (273+20) )* 1/ ( 3*10^-3) = 611.49 ltr

4) v*T2*P1/(T1*P2) = 5.05 l

5) 92.8*(273+90) / 50 = 673.7 K

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