im having trouble with these questions and i need help!

Question

  a) One molecule of NH4NO3 produces ___molecule(s) of N2O and ___ molecules(s) of water.

 

b) One mole of NH4NO3 produces ___ mole(s) of N2O and

___ mole(s) of water.

c) Ten molecules of NH4NO3 would produce___ molecules of N2O

and ___ molecule(s) of water.

d) 2.5 moles of NH4NO3 produces ___ mole(s) of N2O and

and ___ mole(s) of water.

Answer 1

It is a matter of balancing the equation for the reaction, and working with the balanced equation.

 

(a)

 

NH₄NO₃ → N₂O + 2H₂O

 

Hence, 1 molecule of NH₄NO₃ produces 1 molecule of N₂O and 2 molecules of H₂O.

 

(b)

 

If you multiply the balanced equation for part (a) by Avogadro's number, you will get 

 

1 mole of NH₄NO₃ produces 1 mole of N₂O and 2 moles of H₂O.

 

(c)

 

Multiply the balanced equation for part (a) by 10 and get

 

10 molecules of NH₄NO₃ produces 10 molecules of N₂O and 20 molecules of H2O.

 

(d)

 

This is equivalent to multiplying the results of part (b) by 2.5, which gives

 

2.5 moles of NH₄NO₃ produces 2.5 moles of N₂O and 5 moles of H₂O.