How much of the excess reagent in the problem N2 + 3H2 -> 2NH3 with 28 g of N2 and 25 g of H2? Please help I’ve been stuck on this for about 20 mins :(

your answers are a,b,,e and f

i hope this

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current