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4 years ago

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What is the average kinetic energy of 1 mole of gas at 0 degrees kelvin

1 answer:

forsale [732]4 years ago

7 0

The average kinetic energy of a mole of substance is determined from the formula, E=1.5RT where R is 8.314 J/mol K. Substituting temperature of zero kelvin to the equation, the energy is zero. It is recalled that at zero kelvin or absolute zero temperature, all molecules are not moving.

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For the reaction, 2A + B → 3C, rate of disappearance of A is 0.3 M/s in a certain time interval.What is the average rate of appe

andrezito [222]

Answer:

E) rate of appearance of C = 0.45 M/s

rate of the reaction = 0.15 M/s

Explanation:

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Writing rate law for the reaction:

<u>Rate of reaction</u> = - $\frac{1}{2}$ $\frac{d[A]}{dt}$ = - $\frac{d[B]}{dt}$ = $\frac{1}{3}$ $\frac{d[C]}{dt}$ → equation 1

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⇒Rate of reaction = - $\frac{1}{2}$ $\frac{d[A]}{dt}$ = $\frac{1}{2}$ ×0.3 M/s

⇒<u>Rate of reaction = 0.15 M/s</u>

From equation 1, $\frac{d[C]}{dt}$ = - $\frac{3}{2}$ $\frac{d[A]}{dt}$ = $\frac{3}{2}$ ×0.3 M/s

⇒ $\frac{d[C]}{dt}$ = 0.45 M/s

or <u>the rate of appearance of C = 0.45 M/s</u>

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