Question

Steam at 100°C is passed through 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at
15°C till the temperature of the calorimeter and its contents rises to 80°C. The mass of the steam
condensed in kg is
29
(A) 0.130
0
(B) 0.065
(C) 0.260
(D) 0.135
А
91
97
103
109​

Answer 1

Explanation:

Steam at 100 degree c

is passed into

1.1 kg

of water contained in a calorimeter of water equivalent 0.02 kg

at 15 degree c

till the temperature of the calorimeter and its content rises to 80 degree c.

latent heat of steam = 536 cal/g

Answer 2

Answer:

The mass of the steam condensed in kg is 0.130 kg.

Explanation:

Given,

Steam at 100ºC is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15ºC till the temperature of the calorimeter and its contents rises to 80ºC.

To find: The mass of the steam condensed in kg.

Solution:

Applying conservation of heat Energy,

Heat released by steam = heat gained by water and calorimeter

mL + m × S (100 – 80) = (1.1 + 0.02) × S × (80 – 15)

m × 540 + 20 m = 1.12 × 65

m = 0.130 kg.

Therefore, The mass of the steam condensed in kg is 0.130 kg.