What amount of water is required to raise the temperature of 4.5kg of

1.	What amount of water is required to raise the temperature of 4.5kg of water through 25degreeC?
Answer» Answer: It is sensible HEAT- the amount of heat absorbed by 1 kg of water when heated at a constant pressure from freezing point 0 degree Celsius to the temperature of formation of steam i.e. saturation temperature So it is given as - mass× specific heat × rise in temperature i.e. 4.2 × T 4.2 × (100–0) So it is 420kj If you ask how much quantity of heat is required to convert 1 kg of ice into VAPOUR then you have to add latent heat of fusion that is 336 kj/kg and latent heat of vaporization 2257 kj/kg (these TWO process occur at constant temperature so need to add rise in TEMPEATURE) So it will be Q= 1×336 + 1× 4.18 ×100 + 1× 2257 Q = 3011 kj Or 3.1 Mj Explanation: HOPE IT'S HELPFUL TO YOU SO PLEASE MARK ME AS BRANLIEST

What amount of water is required to raise the temperature of 4.5kg of water through 25degreeC?

Answer»

Answer:

It is sensible HEAT- the amount of heat absorbed by 1 kg of water when heated at a constant pressure from freezing point 0 degree Celsius to the temperature of formation of steam i.e. saturation temperature

So it is given as - mass× specific heat × rise in temperature

i.e. 4.2 × T

4.2 × (100–0)

So it is 420kj

If you ask how much quantity of heat is required to convert 1 kg of ice into VAPOUR then you have to add latent heat of fusion that is 336 kj/kg and latent heat of vaporization 2257 kj/kg (these TWO process occur at constant temperature so need to add rise in TEMPEATURE)

So it will be

Q= 1×336 + 1× 4.18 ×100 + 1× 2257

Q = 3011 kj

Or 3.1 Mj

Explanation:

HOPE IT'S HELPFUL TO YOU SO PLEASE MARK ME AS BRANLIEST

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