How many molecules (not moles) of nh3 are produced from 5.85×10−4 g of h2?

The number of moles is given by:

Mass of hydrogen, =    (given)

Molar mass of hydrogen, =

Number of moles of hydrogen,   =

Reaction between to form is:

From the reaction it is clear that 3 moles of hydrogen gives 2 moles of ammonia and 1 mole of nitrogen gives 2 moles of ammonia .

So, of gives:

Number of moles of ammonia, =

Since, in one mole of ammonia, there are molecules of ammonia, .

So, number of molecules in of ammonia, is:

Hence, the number of molecules of ammonia produced by of is .

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.