What is the limiting reactant when 44.7 g of CuO are exposed to 2.84 g of H2 according to the equation
CuO(s) + H2(g) −→ Cu(s) + H2O(g) ? 1. Neither is limiting.
2. CuO
3. H2
4. Unable to determine.

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

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.

give me abc and i will get it for u.