Cylinder A contains a gas whose molecules have an average speed of 0.0000001 meters/sec. Cylinder B contains a gas whose molecules have an average speed of 0.3 meters/sec. Select the statement below that is true regarding these cylinders. options: A. Cylinder A contains a gas that has a temperature closest to absolute zero. B. Even though the molecules are moving at different speeds in the two cylinders, they have the same kinetic energy. C. Cylinder B contains molecules that are moving more slowly than the molecules in Cylinder A. D. Cylinder B contains a gas that has a temperature closest to absolute zero.

Option A,  Cylinder A contains a gas that has a temperature closest to absolute zero

Explanation:

The speed of gas molecules is cylinder B is higher than that of cylinder A. Hence, option C is incorrect.

Also at absolute temperature, the rms speed of gas molecules is equal to zero. Speed of gas in cylinder B has a temperature is much higher than speed nearing to zero.

Hence, option D is also incorrect.

Kinetic energy can not be equal because for gas in cylinder A, the mass should be quite high.

Hence, option A is the only right answer.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

the temperature of the gas, in k, not celsius.