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Physical and Chemical Changes

A small amoun...

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A small amount of mass m of water at a temperature theta is poured on to a large mass M of ice which is at its melting point. If c is the specific heat capacity of water and L is the specific latent heat of fusion of ice, then the mass of the ice that melts is given by:

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Q. A small quantity, mass

m

, of water at a temperature

θ (i n^{\circ} C)

is poured on to a large mass

M

of ice which is at its melting point. If

c

is specific heat capacity of water and

L

the latent heat of fusion of ice, then the mass of ice melted is given by

g

30^{\circ} C

is poured on a large block of ice at

0^{\circ} C

. The mass of ice that melts is (Latent heat of fusion of ice is

80 c a l / g

and specific heat of water is

1 c a l / g^{\circ} C

2 k g

of ice melts when water at

100^{o} C

is poured in a hole drilled in a block of ice. What mass of water was used?

Given: specific heat capacity of water

= 4200 J k g^{- 1} K^{- 1}

specific latent heat of ice

= 336 \times 10^{3} J k g^{- 1}

80 g

30^{o} C

is poured on large block of ice at

0^{\circ}

C. The mass of ice that melts is

Given, Latent heat =

334 J / g

Specific heat of water

= 4.2 J g^{- 1} C^{o - 1}

Q. A piece of ice of mass

40 g

200 g

50^{0} C

. Calculate the final temperature of water when all the ice has melted. Specific heat capacity of water

= 4200 J k g^{- 1} K^{- 1}

and specific latent heat of fusion of ice

= 336 \times 10^{3} J k g^{- 1}

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