Find the KE:- per gm,

Find the KE :- per mole.

Find the KE:- per cm3

Find the KE:- per molecule of nitrogen at N.T.P.(molecular weight of N_2 = 28, Normal pressure = 76 cm of mercury, density of mercury 1.36 gm//cm^2 , g = 980 cm//s^2 , Avogadro's number 6.023 xx 10^23 , R = 8.314 xx 10^7 erg//mol^k , molecular weight of nitrogen = 31).

Find the KE per kg of nitrogen molecule at 127^@C (molecular weight of nitrogen = 28, R = 8320 J//K mole K ).

If 50 gm of water at 0^@C is added to 250 gm of water at 90^@C . Find the final temperature

30 gm of ice at 0^@C is placed in a calorimeter of mass 20 gm also at 0^@C . 100 gm of water at 90^@C is poured into the calorimeter. Find the final temperature. (specific heat of calorimeter = 0.4 cal//gm ^@C , Specific heat of water = 0.42 cal//gm ^@C Latent heat of fusion of ice = 80calg )

Find the KE of 5 litres of a gas at STP given standard pressure is 1.013 xx 10^5 N//m^2 .

The work function of a metal is 4.3 eV. Find the K.E. and the velocity of photoelectrons emitted when radiation of wavelength 2500 overset (@)(A) is incident on it. (Mass of electron 9.1 xx 10^-31 kg )