The formation of hydrazine (N2H4) from its elements takes place by the following reaction equation.

N2 (g) + 2 H2 (g) → N2H4 (g)

What are the volumes of N2 gas and H2 gas required to form 28.5 grams of N2H4 at 30oC and 1.50 atm?

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

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