Molecular Physics | Thermodynamics Answers

In two glasses there is a liquid material of same type, the volume of one is V1,its temperature of is T1, the volume of the other is V2 and its temperature is T2. We mix the liquids and wait while the temperature settles. What is the commom temperature if we neglect any heat losses? What would be the common temperature if the volume of the first liquid is halved and the second liquid doubled.

A heating coil is immersed in a calorimeter of heat capacity 50 joule per degree celsius containing 1 kg of a liquid of specific heat capacity 450 joule per kg per degree celsius. the temperature of the liquid rises by 10 degree celsius when 2 ampere current is passes through it for 10 minutes. Find
1. the resistance of the coil
2. the potential difference across the coil

Prepare a cell containing copper sulphate solution and two copper plates. Determine its internal resistance with the help of a potentiometer. New repeat the experiment by changing the concentration of the solution. For this remove about 50 ml CuSo4 solution and add similar amount of water in the cell. For the purpose of measurement you can use a doctor’s syringe. Do you find any change in the internal resistance of the cell? Also change the (i) plate area immersed in the electrolyte and (ii) separation between the plates. Write various factors on which internal resistance of a cell depends. (please answer its urgent)

A gas occupies a certain volume at 27 degree centigrate.at wat temperature will it's volume be 3 times the original volume assuring it's pressure remains constant

Can the specific heat at constant volume be greater than the specific heat at constant pressure. Justify by
applying the first law of thermodynamics.

1. How long would you expect a 2.5 kW heater to take to heat 0.6 L of water from 20 to 100°C if there were no heat losses.

2. How much water will boil away in the last 20 seconds of the heating?

where does the solids weigh more in air or in a liquid ?

New repeat the experiment by changing the concentration of the solution. For this remove about 50 ml
CuSo4
solution and add similar amount of water in the cell. For the purpose of measurement you can use
a doctor’s syringe. Do you find any change in the internal resistance of the cell?
Also change the (i) plate area immersed in the electrolyte and (ii) separation between the plates. Write
various factors on which internal resistance of a cell depends.

A monoatomic ideal gas initially at 17°C is is suddenly compressed to one-eighth of its original volume. The temperature after compression is:
a)16°C b)17°C c)887°C d)none of these.