Propane burns in air to produce carbon dioxide and water according to the above equation. 44.1 g of propane and 4.1 g of oxygen are added to a rigid vessel. The reaction mixture is sparked and
goes to completion.

12 w 12 w 12+= gay mom gay

Explanation:

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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