The temperature of an open room of volume 30 m^3 increases from 17^@C to 27^@C due to the sunshine. The atmospheric pressure in the room remains 1 times 10^5Pa. IF n_i and n_f are the number of molecules in the room before and after heating then n_f-n_i will be

The temperature of an open room of volume 30 m^3 increases from 17^@C

1.	The temperature of an open room of volume 30 m^3 increases from 17^@C to 27^@C due to the sunshine. The atmospheric pressure in the room remains 1 times 10^5Pa. IF n_i and n_f are the number of molecules in the room before and after heating then n_f-n_i will be
Answer» `-1.61 TIMES 10^23` `1.38 times 10^23` `2.5 times 10^25` `-2.5 times 10^25` Solution :IF `n_1` and `n_2` are the NUMBER of moles an INITIAL and final temperature inside the room RESPECTIVELY then `n_1=(p_1V_1)/(RT_1)=(10^5times30)/(8.31times(273+17))` `=1.245 times10^3` `n_2=(p_2V_2)/(RT_2)=(10^5times30)/(8.31times(273+27))` `=1.203 times10^3` Therefore `n_f-n_i=(n_2-n_1) times 6.023 times 10^23` `=-2.5 times 10^25`