Question

B. If the sand you ran across has a specific-heat capacity of 835 J/(kgºc),

how much energy must be added to a 2-kilogram pile of it to increase its
temperature from 40°C to 50°C? Show your work. (3 points)

Answer 1

Answer: 16700 Joules

Step-by-step explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

`Q=m* c* \Delta T`

Q = Heat absorbed = ?

m = mass of sand = 2 kg

c = heat capacity =
`835J/kg^0C`

Initial temperature =
`T_i` =
`40^0C`

Final temperature=
`T_f` =
`50^0C`

Change in temperature ,
`\Delta T=T_f-T_i=(50-40)^0C=10^0C`

Putting in the values, we get:

`Q=2kg* 835J/kg^0C* 10^0C`

`Q=16700J`

16700 J of energy must be added to a 2-kilogram pile of it to increase its temperature from 40°C to 50°C