Under certain conditions neon gases diffuse at a rate of 7.0 cm/s under the same conditions as an on known gas defuses at a rate of 4.9 per second what is the approximate molar mass of the unknown gas?

Answer : To find the molar mass of unknown gas we need to solve the equation of rate of diffusion and molecular weight of the gases, which is as follows;



here the mol wt of gas B is not known so we take it as 'x'

on solving we get 7 X  / 4.9 X 

mol. wt of unknown gas = 20.0 g

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !