RO/ EGO
Water
Pot
Stove
When an egg is boiled in a pot of water on the stove, there is
more than one kind of heat transfer. Heat is transferred from the
stove to the pot directly since they are physically touching. Heat
is also transferred from the pot to the egg, carried through the
water. What two kinds of heat transfer are represented?
Stove to Pot = Convection, Pot to Egg = Conduction
Stove to Pot = Conduction, Pot to Egg = Radiation
Stove to Pot = Radiation, Pot to Egg = Conduction
Stove to Pot = Conduction, Pot to Egg = Convection

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.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer