How many molecules are there in 2.80 kg of hydrazine, $N_2H_2$ ?

Question

6018 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-04T23:55:20

$"Hydrazine is"$ $N_2H_4$

$"Moles of hydrazine"$ $=$ $"Mass of hydrazine"/"Molar mass of hydrazine"$

$=(2.8xx10^3*g)/(32.05*g*mol^-1)~=87*mol.$

And if there are $87*mol$ , there are $87*molxxN_A$ , where $N_A="the avocado number"=6.022xx10^23*mol^-1$ ,

And $87*molxxN_A=5.26xx10^25$ individual hydrazine molecules.

$N_2H_2$ is $"diazene"$ , which can exist in two isomeric forms. Why?

How many molecules are there in 2.80 kg of hydrazine, N_2H_2N_2H_2?