Advertisements
Advertisements
प्रश्न
63.2 g of copper at 50°C can just melt 3.8g of ice. If the specific latent heat of ice is 336 J/g, find the specific heat capacity of copper.
Advertisements
उत्तर
Let the specific heat capacity of copper be s
∴ Heat lost by copper = 63.2 × s × (50 - 0) = 3160 s joule
Heat gained by ice = 3.8 × 336 joule
Since Heat gained = Heat lost
We have 3160s = 3.8 × 336 = 1276.8
Or s = (1276.8/3160) K/g °C = 0.404 J/g °C.
संबंधित प्रश्न
A geyser heats water flowing at the rate of 3.0 litres per minute from 27 °C to 77 °C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0 × 104 J/g?
A copper vessel of mass 100 g contains 150 g of water at 50°C. How much ice is needed to cool it to 5°C?
Given: Specific heat capacity of copper = 0.4 Jg-1 °C-1
The Specific heat capacity of water = 4.2 Jg-1 °C-1
The Specific latent heat of fusion ice = 336 Jg-1
How does green house effect help in keeping the temperature of earth’s surface suitable for living of human beings?
Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.
What is the specific heat capacity of boiling water?
The ratio of specific heat capacity to molar heat capacity of a body _____________ .
m kg of a substance of specific heat capacity s J/kg °C is heated so that its temperature rises from θ1°C to θ2°C. Write down the expression for the heat Q supplied.
Explain, why do sandy soils, get heated up quickly as compared to wet soils?
Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.
Why are athletes advised to put on extra clothes after competing on event?
