Question

PLEASE ANSWER ASAP

The thermal energy produced by an electric heater in three minutes is used to melt wax. The
solid wax is initially at its melting point of 60 0C.
The specific latent heat of the wax is 220 J / g. The heater supplies 7700 J of thermal energy to
the wax. Some of the wax melts.
How much wax melts?

Answer 1

m = 35 g = 0.035 kg

Step-by-step explanation:

The amount of heat required by a specific mass of wax to be melted at its melting point can be given by the following formula:

`Q = mL`

where,

Q = Heat Supplied by the Heater = 7700 J

m = mass of wax melted = ?

L = Latent Heat of Fusion of Wax = 220 J/g

Therefore,

`7700\ J = m(220\ J/g)\\m = (7700\ J)/(220\ J/g)\\\\`

m = 35 g = 0.035 kg