Home
Class 12
PHYSICS
the water equivalent of a calorimeter i...

the water equivalent of a calorimeter is `50g`. This calorimeter is used to heat `100 g` of water from `10°C` to `60°C`. Amount of heat required to do this is

A

`7.5` kcal

B

`5.0` kcal

C

`2.5` kcal

D

`10.0` kcal

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

The water equivatent of a 400 g copper calorimeter (specific heat =0.1 "cal"//g^(@)C )

The water equivalent of a copper calorimeter is 4.5g. If the specific heat of copper is 0.09 cal g^(-1).^(@)C^(-1) . Then

The water equivalent of 50g of aluminium (Specific heat is 0.2 cal g^-1 °C^-1 )

In the Joule experiment, a mass of 20 kg falls through 1.5m at a constant velocity to stir the water in a calorimeter. If the calorimeter has a water equivalent of 2 g and contains 12 g of water, what is f, the mechanical equivalent of heat, for a temperature rise of 5.0^@C ?

In a calorimeter (water equivalent =40g ) are 200g of water and 50 g of ice all at 0^@C . 30 g of water at 90^@ C is poured into it. What will be the final condition of the system?

Specific heat of water is 4.2 J//g.^(@)C . If light of frequency 3 xx 10^(29)Hz is used to heat 400 g of water from 20^(@)C to 40^(@)C , the number of photons needed will be

An experiment is performed to measure the molar heat capacity of a gas at constant pressure using Regnault's method. The gas is initially contained in a cubical reservoir of size 40 cm xx 40 cm xx 40 cm xx at 600 kPa at 27^0C . A part of the gas is brought out, heated to 100^0C and is passed through a calorimeter at constant pressure. The water equivalent of the calorimeter and its contents increases from 20^0C to 30^0C during the experiment and the pressure in the reservoir decresases to 525 kPa . Specific heat capacity of water = 4200 J kg^(-1) K^(1). Calculate the molar heat capacity Cp from these data.

Calculate the heat of fusion of ice from the following data of ice at 0^@C added to water. Mass of calorimeter =60g , mass of calorimeter + water =460g , mass of calorimeter + water + ice =618g , initial temperature of water =38^@C , final temperature of the mixture =5^@C . The specific heat of calorimeter =0.10 cal//g//^@C . Assume that the calorimeter was also at 0^@ C initially

When a calorimeter contains 40g of water at 50^(@)C , then the temperature falls to 45^(@)C in 10 minutes. The same calorimeter contains 100g of water at 50^(@)C , it takes 20 minutes for the temperature to become 45^(@)C . Find the water equivalent of the calorimeter.

5 g of water at 30^@C and 5 g of ice at -20^@C are mixed together in a calorimeter Find the final temperature of the mixure. Assume water equivalent of calorimeter to be negligible, sp. Heats of ice and water are 0.5 and 1 cal//g C^@ , and latent heat of ice is 80 cal//g