Advertisements
Advertisements
Question
A substance is in the form of a solid at 0°C. The amount of heat added to this substance and the temperature of the substance are plotted on the following graph:
If the specific heat capacity of the solid substance is 500 J/kg °G, find from the graph, the mass of the substance.
Advertisements
Solution
From graph heat supplied is 800 joule during change in temperature from 0 to 80°C.
Heat = Mass × Sp. heat capacity × Rise in temperature
800 = m × 500 × 80
m = `1/50` kg
m = 20 g
RELATED QUESTIONS
Give a mathematical relation between Heat Capacity and Specific Heat Capacity.
What do you mean by the following statement?
The heat capacity of a body is 50 JK-1?
State three ways to minimize the global warming.
Specific heat capacity of a substance A is 3.8 J g-1 K-1 and of substance B is 0.4 J g-1 k-1. Which substance is a good conductor of heat? How did you arrive at your conclusion?
All metals have the same specific heat capacity.
Define specific heat capacity.
Numerical Problem.
What is the heat in joules required to raise the temperature of 25 grams of water from 0°C to 100°C? What is the heat in Calories? (Specific heat of water = `(4.18"J")/("g"°"C")`
The diagram below shows a cooling curve for 200 g of water. The heat is extracted at the rate of 100 Js-1. Answer the questions that follow:
- Calculate specific heat capacity of water.
- Heat released in the region BC.
Find the odd one out:
