114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long will it take to raise the temperature of the water from 15° C to 25° C?

Answers

Answer 1

Water will take a time of 71.2 seconds to raise the temperature of the water from 15° C to 25° C.

What is the specific heat capacity?

The specific heat capacity can be demonstrated as the quantity of heat needed to increase the temperature in one unit of material by one degree celcius.

Whenever the energy will be lost or absorbed the temperature of the material will be changed:

Q = mCΔT

Given, the mass of the water, m = 114 Kg

The change in the temperature = 25 - 15= 10 °C

The specific heat capacity of the water, C =4.184 J/g°C

The time can be calculated for the given change in temperatures as:

P × t = m×C ×ΔT

67 W × t = 114g × (4.184 J/g°C) × 10 °C

t = 71.19 sec

Learn more about specific heat capacity, here:

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