मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

What is the Specific Heat Capacity of Melting Ice? - Physics

Advertisements
Advertisements

प्रश्न

What is the specific heat capacity of melting ice?

एका वाक्यात उत्तर

उत्तर

The specific heat capacity of melting ice is 0.50 cal/g-oC or 2093 J/kg-K.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Calorimetry - Short Answers [पृष्ठ ४६]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
पाठ 3 Calorimetry
Short Answers | Q 7.1 | पृष्ठ ४६

संबंधित प्रश्‍न

50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.


Heat energy is supplied at a constant rate to 100g of ice at 0 °C. The ice is converted into water at 0° C in 2 minutes. How much time will be required to raise the temperature of water from 0 °C to 20 °C? [Given: sp. heat capacity of water = 4.2 J g-1 °C-1, sp. latent heat of ice = 336 J g-1].


A solid metal weighing 150 g melts at its melting point of 800 °C by providing heat at the rate of 100 W. The time taken for it to completely melt at the same temperature is 4 min. What is the specific latent heat of fusion of the metal?


The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.

Given: Specific heat capacity of water = 4200 J kg-1 °C-1 and specific latent heat of ice = 336000 J kg-1.


Explain the meaning of green house effect.


How will climate changes affect the various animal species?


State three ways to minimize the global warming.


Without green house effect, the average temperature of earth’s surface would have been:

(a) – 18℃

(b) 33℃

(c) 0℃

(d) 15℃


What is the unit of heat capacity in CGS system?


State whether heat energy is absorbed or released during freezing of ice.

(b) 2000 J of heat energy is required to raise the temperature of 4 kg of a
metal by 3°c. Which expression gives the specific heat capacity of the metal?


A solid of mass 80 g at 80°C is dropped in 400 g water at 10°C. If final temp. is 30°C, find the sp. heat cap. of the solid.


650 J of heat is required to raise the temp. of 0.25 kg of lead from 15°C to 35°C. Calculate the Sp. heat capacity of lead.


If 10125 J of heat energy boils off 4.5 g of water at 100°C  to steam at 100°C, find the specific latent heat of steam.


What is heat? What is the S. I. unit of heat?


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.


Does the specific heat capacity of a substance depend upon its mass and rise in temperature only?


Explain, why do sandy soils, get heated up quickly as compared to wet soils?


Explain, why does a wise farmer water his fields, if forecast is forst?


If substances A and B are liquids then which one would be more useful in car radiators?
Given: Specific heat capacity’A’ 3.8 J/g /K. Specific heat capacity ‘B’ 0.4 J/g /K.


Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.


Will the value of specific heat’capacity and specific latent heat of a substance change if the scale is °F instead of °C?


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.


Calculate the amount of heat released when 5.0 g of water at 20°C is changed into ice at 0°C.
(Specific heat capacity of water = 4.2 J/g°C
Specific latent heat of fusion of ice = 336 J/g)


Derive an expression for finding out the specific heat capacity of a body (solid) from the readings of an experiment given below:

(i) Mass of empty calorimeter (with stirrer) = m1 gm

(ii) Mass of the metal piece = M gm

(iii) Mass of colorimeter and water = m2 gm

(iv) Initial temperature and water = t1°C

(v) Temperature of hot solid (metal piece) = t2 °C

(vi) Final temperature of the mixture = t°C

(vii) Specific heat of calorimeter = 0.4 J gm / °C


The molar specific heat of a gas at constant volume is 12307.69 J kg-1 K-1. If the ratio of the two specific heats is 1.65, calculate the difference between the two molar specific heats of gas. 


Calculate the ratio of two specific heats of polyatomic gas molecules.  


Define specific heat capacity.


What is specific heat capacity?


Express the change in internal energy in terms of molar specific heat capacity.


Two uniform brass rods A and B of length land 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the volume ofB to that of A is ____________.


The value of 'γ' for a gas is given as `gamma = 1 + 2/"f"`, where 'f ' is the number of degrees of freedom of freedom of a molecule of a gas. What is the ratio of `gamma_"monoatonic"//gamma_"diatomic"`?
Diatomic gas consists of rigid gas molecules


Why is water used as a coolant in radiators of a car?


Find the odd one out:


A geyser heats water flowing at a rate of 2.0 kg per minute from 30°C to 70°C. If the geyser operates on a gas burner, the rate of combustion of fuel will be ______ g min-1.

[Heat of combustion = 8 × 103 Jg-1 Specific heat of water = 4.2 Jg-1°C-1]


The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If `gamma = "C"_"p"/"C"_"v"` and R is the universal gas constant, then Cv is equal to ______.


When two kilocalories of heat are supplied to a system, the internal energy of the system increases by 5030 J and the work done by the gas against the external pressure is 3350 J. Calculate J, the mechanical equivalent of heat.


Thermal capacities of substances A and B are same. If mass of A is more than mass of B then:

Which substance will have more specific heat capacity?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×