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

What is the Specific Heat Capacity of Boiling Water? - Physics

Advertisements
Advertisements

प्रश्न

What is the specific heat capacity of boiling water?

एका वाक्यात उत्तर
Advertisements

उत्तर

The specific heat capacity of boiling water is 0.46 cal/g-oC or 1926 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 7.2 | पृष्ठ ४६

संबंधित प्रश्‍न

A child running a temperature of 101°F is given an antipyrin (i.e. a medicine that lowers fever) which causes an increase in the rate of evaporation of sweat from his body. If the fever is brought down to 98 °F in 20 min, what is the average rate of extra evaporation caused, by the drug? Assume the evaporation mechanism to be the only way by which heat is lost. The mass of the child is 30 kg. The specific heat of human body is approximately the same as that of water, and latent heat of evaporation of water at that temperature is about 580 cal g–1.


State two factors upon which the heat absorbed by a body depends


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.


A liquid X has the maximum specific heat capacity and is used as a coolant in Car Radiators. Name the liquid X.


During the phase change does the average kinetic energy of the molecules of the substance increase?


Give a mathematical relation between Heat Capacity and Specific Heat Capacity.


Discuss the role of high specific heat capacity of water with reference to climate in coastal areas.


A mass m1 of a substance of specific heat capacity c1 at temperature t1 is mixed with a mass m2 of other substance of specific heat capacity c2 at a lower temperature t2. Deduce the expression for the temperature t of the mixture. State the assumption made, if any.


Explain the term boiling ?


What impact will global warming have on the health of the affected population?


How will climate changes affect the various animal species?


Solve the following problems:

Equal heat is given to two objects A and B of mass 1 g. Temperature of A increases by 3°C and B by 5°C. Which object has more specific heat? And by what factor?


The ratio of specific heat capacity to molar heat capacity of a body _____________ .


104g of water at 30°C is taken in a calorimeter made of copper of mass 42 g. When a certain mass of ice at 0°C is added to it, the final steady temperature of the mixture after the ice has melted, was found to be 10°C. Find the mass of ice added. [Specific heat capacity of water = 4.2 Jg–1°C–1 ; Specific latent heat of fusion of ice = 336 Jg–1; Specific heat capacity of copper = 0.4 Jg–1°C–1] .


Define the term 'specific heat capacity' and state its unit.


The substances like water which have ........... Heat capacity warm up more slowly than substances like iron which have .......... heat capacity.


The specific heat of a substance of mass 100 g is 0.04 cal g-1 0C-1. What is its heat capacity?

State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.


Write down the approximate temperature at which the water boils in a pressure cooker.

State the condition for the flow of heat energy from one body to another.


The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate: Heat capacity of lead piece.


The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate Specific heat capacity of lead.


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


Solve the following problem.

Specific latent heat of vaporization of water is 2.26 × 106 J/kg. Calculate the energy needed to change 5.0 g of water into steam at 100 ºC.


Write the name.

The amount of heat absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase.


The specific heat capacity of water is 1 cal/g °C.


All metals have the same specific heat capacity.


_______ is defined as the amount of heat required to raise the temperature of 1kg of a substance by 1°C.


Which of the following substances (A, B and C) has the highest specific beat?


Two metals A and B have specific heat capacities in the ratio 2:3. If they are supplied same amount of heat then

If the mass ratio of metal A and metal B is 3:5 then calculate the ratio in which their temperatures rise.


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


Specific heat capacity C =  ______.


Match the following

1. Specific heat capacity a. Dewar bottle
2. Calorimeter b. Lavoisier and Simon
3. Vacuum flask c. J Kg-1 K-1
4. Ice – calorimeter d. Heat capacity

Match the columns:

Column ‘A’ Column ‘B’
The SI unit of specific heat capacity (a) Jkg−1°C−1
(b) kg/m3
(c) calorie

The specific heat capacity of ______ is maximum.


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.


Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×