100g of water is heated from 30^@C to 50...

100g of water is heated from `30^@C to 50^@C`. Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is `4184J//kg//K`):

`84kJ`

`2.1kJ`

`4.2kJ`

`8.4kJ`

Text Solution

Verified by Experts

The correct Answer is:

`Q = msDeltatheta= 0.1 xx 4184 xx 20 = 8.4kJ`

Topper's Solved these Questions

GEOMETRICAL OPTICS
ALLEN|Exercise EXERCISE - 05 (B)|58 Videos
GEOMETRICAL OPTICS
ALLEN|Exercise EXERCISE - 05 (B) (MCQ)|9 Videos
GEOMETRICAL OPTICS
ALLEN|Exercise EXERCISE - 04 (B)|15 Videos
CURRENT ELECTRICITY
ALLEN|Exercise All Questions|427 Videos
GRAVITATION
ALLEN|Exercise EXERCISE 4|9 Videos

Similar Questions

Explore conceptually related problems

200 g of water is heated from 40^(@)C "to" 60^(@)C . Ignoring the slight expansion of water , the change in its internal energy is closed to (Given specific heat of water = 4184 J//kg//K ):

1 kg of water is heated from 40^(@) C "to" 70^(@)C ,If its volume remains constatn, then the change in internal energy is (specific heat of water = 4148 J kg^(-1 K^(-1))

If 1000kg of water is heated from 0^(@)C to 100^(@)C , calculate the increase in mass of water.

50 g of copper is heated to increase its temperature by 10^@C . If the same quantity of heat is given to 10g of water, the rise in its temperature is (specific heat of copper =420J//kg^(@)//C )

Calculate the entropy change when 1 kg of water is heated from 27^(@)C to 200^(@)C forming supper heated steam under constant pressure. Given specific heat of water = 4180 J Kg^(-1)K^(-1) and specific heat of steam = 1670 + 0.49 J kg^(-1)K^(-1) and latent heat of vaporisation =23 xx 10^(5) J kg^(-1) .

400 kg of water is heated from 30^(@) C to 100^(@)C . What will be the increase in mass of water ? Take specific heat of wateer = 4.2 xx10^(3) " J kg"^(-1).^(@)C^(-1) .

500 kg of water is heated from 20^(@) to 100^(@) C . Calculate the increase in the mass of water.Given specific heat of water =4.2 xx 10^(3) J kg ^(-1) .^(@)C^(-1) .

A 100-g block of lead is heated from 20^@C to 50^@C . Calculate the amount of heat transferred to the block (specific heat of lead = 127 J.kg^-1.K^-1 ).

ALLEN-GEOMETRICAL OPTICS-EXERCISE - 05 (A)

The speed of sound in oxygen (O2) at a certain temperature is 460ms^-1...
Text Solution
|
One kg of a diatomic gas is at pressure of 8xx10^4N//m^2. The density ...
Text Solution
|
100g of water is heated from 30^@C to 50^@C. Ignoring the slight expan...
Text Solution
|
Three perfect gases at absolute temperature T(1), T(2) and T(3) are mi...
Text Solution
|
The specific heat capacity of a metal at low temperature (T) is given ...
Text Solution
|
A container with insulating walls is divided into two equal parts by a...
Text Solution
|
Which statements is incorrect?
Text Solution
|
If mass-energy equivalence is taken into account, when water is cooled...
Text Solution
|
Even Carnot engine cannot give 100% efficiency because we cannot
Text Solution
|
"Heat cannot by itself flow from a body at lower temperature to a body...
Text Solution
|
Which of the following parameters does not characterize the thermodyna...
Text Solution
|
A Carnot engine takes 3xx10^6 cal of heat from a reservoir at 627^@C a...
Text Solution
|
Which of the following statements is correct for any thermodynamic sys...
Text Solution
|
Two thermally insulated vessel 1 and 2 are filled with air at temperat...
Text Solution
|
Which of the following is incorrect regarding the first law of thermod...
Text Solution
|
The temperature -entropy diagram of a reversible engine cycle is given...
Text Solution
|
A system goes from A and B via two processes. I and II as shown in fig...
Text Solution
|
Two rigid boxes containing different ideal gases are placed on a table...
Text Solution
|
The work of 146 kJ is performed in order to compress one kilo mole of ...
Text Solution
|
A Carnot engine, having an efficiency of eta=1//10 as heat engine, is ...
Text Solution
|