5. What is the velocity of chlorine at 78.0 degree C? a) 11.1 m/s b) 19.1 m/s c)

Question

5. What is the velocity of chlorine at 78.0 degree C? a) 11.1 m/s b) 19.1 m/s c) 351 m/s d) 60.0 m/s e) 34.9 m/s 6. A chemical system absorbs 155 kJ of heat and has 22 kl of work done on it. What Is delta E for the surroundings? a) - 117 kJ b) - 133 kJ c) 117 kJ d) 133 kJ e) No correct answer 7. What is the specific heat of a metal that uses 4.18 kJ of energy to increase the temperature 7.30 degree C for an 825 g sample? a) 0789 J/g dot degree C b) 0.694 J/g dot degree c) 4.184 J/g dot C d) 6.94 X 10^-4 J/g dot degree C e) No correct answer 8 How much hydrogen is needed to produce 112 kJ of heat? 2H2(g) + O2(g) right arrow 2H2O delta H = -483.5 kJ a) -0.231 g b) 1.88 g C) -0.934 g d) 0.934 g e) No correct answer

Explanation / Answer

5]   Root-mean-square. speed of an ideal gas:
v (rms) = sqrt(3RT/M)
where R = 8.31 J K?1

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