Heat required to change the phase of ice is given by
Q = m* L
here
m = mass of ice
L = latent heat of fusion
now we have
m = 45 kg
L = 334 KJ/kg
now by using above formula
In KJ we can convert this as
so the correct answer is D option
The additional energy in a beaker of hot water compared to an otherwise identical beaker of room temperature water is _ _ _ _ _
2 answers:
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Answer:
m = 4.65 kg
Explanation:
As we know that the mass of the water that evaporated out is given as
so the energy released in form of vapor is given as
now the heat required by remaining water to bring it from 15 degree to 100 degree
total heat required for above conversion
now by heat energy balance
heat given by granite = heat absorbed by water
Answer:
The vapor pressure is 170.6 mmHg.
Explanation:
Given that,
Heat of vaporization = 16.69 kJ/mole
Temperature = 254.3
Pressure = 92.44 mmHg
Temperature = 275.7 K
We need to calculate the vapor pressure
Using relation pressure and temperature
Put the value into the relation
Hence, The vapor pressure is 170.6 mmHg.