PLEASE ANSWER THIS FASTIf 64800 calories of heat are extracted from 10

1.	PLEASE ANSWER THIS FASTIf 64800 calories of heat are extracted from 100 gm of steam at 100°C, what will be (i) the final result and (ii) the final temperatureLf(latent heat of fusion of ice) = 80cal/gm and Lv(latent heat of vaporization of water) = 540cal/gmNO SPAMS PLEASE
Answer» Answer: (i) The final result will be that there will be 10 gram of water and 90 gram of ice at 0°C (ii) Final temperature will be 0°C Explanation: At 100°C, the whole water would have been converted into steam The heat required to bring the steam at 100°C to water at 100°C Q₁ = m × Latent Heat of vapourisation = 100 × 540 = 54000 calories Again lets calculate how much heat is required to bring the temperature of water at 100°C to water at 0°C If the sum of both the heats is less GREATER than 64800 then the water sill remain at some temperature above 0°C Using $\boxed{Q=mc\Delta t}$ Q₂ = 100 × 1 × (100 - 0) = 10000 calories Q₁ + Q₂ = 54000 + 10000 = 64000 calories But the total heat that was EXTRACTED was 64800 calories So still 64800 - 64000 calories = 800 calories of heat is left Lets assume that m gram of water at 0°C is converted into ice at 0°C with this 800 calories Then Q = m × Latent Heat of fusion of ice 800 = m × 80 ⇒ m =10 gram Therefore at at 0°C, 10 gram of water will have converted into 10 gram of ice and 90 gram of water will remain at 0°C Hope this answer is helpful to you.

PLEASE ANSWER THIS FASTIf 64800 calories of heat are extracted from 100 gm of steam at 100°C, what will be (i) the final result and (ii) the final temperatureLf(latent heat of fusion of ice) = 80cal/gm and Lv(latent heat of vaporization of water) = 540cal/gmNO SPAMS PLEASE

Answer»

Answer:

(i) The final result will be that there will be 10 gram of water and 90 gram of ice at 0°C

(ii) Final temperature will be 0°C

Explanation:

At 100°C, the whole water would have been converted into steam

The heat required to bring the steam at 100°C to water at 100°C

Q₁ = m × Latent Heat of vapourisation

= 100 × 540

= 54000 calories

Again lets calculate how much heat is required to bring the temperature of water at 100°C to water at 0°C

If the sum of both the heats is less GREATER than 64800 then the water sill remain at some temperature above 0°C

Using

$\boxed{Q=mc\Delta t}$

Q₂ = 100 × 1 × (100 - 0)

= 10000 calories

Q₁ + Q₂ = 54000 + 10000 = 64000 calories

But the total heat that was EXTRACTED was 64800 calories

So still 64800 - 64000 calories = 800 calories of heat is left

Lets assume that m gram of water at 0°C is converted into ice at 0°C with this 800 calories

Then

Q = m × Latent Heat of fusion of ice

800 = m × 80

⇒ m =10 gram

Therefore at at 0°C, 10 gram of water will have converted into 10 gram of ice and 90 gram of water will remain at 0°C

Hope this answer is helpful to you.