Molecular Physics | Thermodynamics Answers

An incident angle in an unknown substance is 47.0 if this ray is refracted at an angle of 63.7 degree in ice what is the speed of light in the unknown substance

How much energy does it take to make 500 g of solid lead at 21°C and turn it entirely to liquid lead?

. How much energy does it take to boil 750 g water from 20°C to steam at 110°C

State the pressure law and describe an experiment to verify it. Deduce the formula for the pressure coefficient of gas. What is this value?

How much heat is needed to change 5g of ice at 0 degrees C to water at 50 degrees C

A bath contains 100kg of water at 60°C. Hot and cold taps are then turned on to deliver 20kg per minute each at temperatures 70°C and 10°C respectively. How long will it be before the temperature in the bath dropped to 45°C?

A sealed flask of capacity 500cm3 contains gas at a pressure of 1 atmosphere. If the temperature of the gas is raised from 10℃ to 35℃,without any change in volume, calculate the new pressure.

If two charged balloons are 20cm apart and they feel a force of electrical repulsion of 50N, what would the force of electrical repulsion become if the balloons were moved apart to a distance of 100cm?

A 20g cube of ice, initially at temperature of -5°C is put into some water in a Styrofoam cup. The initial temperature of the water is 50°C, and the ice cube absorbs 5kJ of heat before reaching thermal equilibrium with the water. Assume the ice absorbs heat only from the water. What final temperature does the mixture reach?

Which of the following is False


Group of answer choices


The higher the temperature at which a liquid boils, the larger the latent heat of vaporization of that liquid


Different liquids require different amounts of heat to go through phase change


The latent heat of fusion of water indicates the amount of heat needed to melt 1g or 1 kg of ice at 0°C.


During phase change the temperature of an object remains constant