To solve this problem it is necessary to apply the concepts related to the conservation of energy and heat transferred in a body.
By definition we know that the heat lost must be equal to the heat gained, ie
Where,
Q = Heat exchange
The heat exchange is defined as
Where,
Specific heat
m = mass
Change in Temperature
Therefore replacing we have that
Replacing with our values we have that
Therefore the highest possible temperature of the spoon when you finally take it out of the cup is 75.24°C
Explanation:
Polar molecules are the molecules with net dipole due to presence of partial positive charges and partial negative charges. For example of water molecule.
Water molecule is made up of the one oxygen atom and 2 hydrogen atom. There two lone pairs on the oxygen atom which repel both the (O-H) bond pairs away from them.Also oxygen being electronegative attracts the shared pair of electrons towards itself. Due to this the net dipole generates in a water molecule directing towards the lone pairs of the oxygen atom.Hence this makes the water molecule polar
Non Polar molecules are the molecules in which equal sharing of electrons is present that is no net dipole is present. Atom with equal electronegativites have forms polar molecules
Carbon dioxide molecule is a made up two oxygen atoms and 1 carbon atom. Since, there are two electronegative atoms which will attract electrons bond pairs towards itself equally from the both sides which will cancels out the each other dipole resulting in no net dipole in the molecule which makes it non polar molecule.
