Question

1L of water and 4L of water, both are applied for the same flame at the same time.

Part A - If the 4L of water temperature increase by 8^oC. How much the temperature of 1 L of water?

Part B - If both of them are boiling now. What is their temperature?

Part C - Compare their thermal energy once both are boiling?

Part D - If 500 kJ was added to 32kg of water. How much the temperature of the water will increase?( use C for water 4190J/kg.^oC)

Part E - Which of the following materials has high specific heat capasity?

Answer 1

Part(A):

Specific heat of water = C

Increase in temperature is = ΔT

mass of water = m

Heat absorbed = H = m C ΔT    ...................... (i)

Let, the mass of 1L water is m. Then the mass of 4L water would be M = 4m

They both have absorbed same amount of heat.

So, if the increase in temperature of the 4L water is = 8 degree C

Then the increase in temperature of the 1L water is

Part(B):

If both of them are boilling, they both have a temperature of =

Part(C):

As equation (i) suggests, the thermal energy is because of heat absorbed by water.

So, the thermal energy of the 4L water would be 4 times heigher than that of the 1L water.

Part(D):

As equation (i) suggests, the increase in temperature is

Part(E):

The specific heat capacity is the same for both. As it is a property of the material, not the quantity of the material.