Which waves are mechanical waves

a. sound waves

b. microwaves

c. light waves

d. radio waves

just d why would it be microwaves if it electrical

passing a magnet thought the

mixture , because iron gets attracted to magnet .

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.