Which of the following would have the lowest average kinetic energy?
cl2 gas at 35 °c
f2 gas at 15 °c
o2 gas at 25 °c
n2 gas at 50 °c

The correct answer is F2 gas at 15 degree C.

Explanation:

On the basis of the kinetic theory of gases, all the gases at a specific temperature possess the same average kinetic energy. The average kinetic energy of the gases can be determined with the help of the relation, K = 3R / 2NA * T

Here, K is the average kinetic energy,

R is the gas constant and NA is the Avogadro's number (6.023 * 10^23 atoms /mol)

T is the temperature in Kelvin

It is evident from the relation that K relies upon the temperature. Thus, F2 gas at 15 degree C exhibits the lowest average kinetic energy as it is at the lower temperature in comparison to the other gases.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)