Respuesta :
V stands for variable which is used when something does not remain constant and it keeps on changing. C stands for constant and is used when something does not change and remains the same through out.
Explanation:
The temperature of the gas: V
The temperature of gas is a variable quantity. It can be changed by changing energy or pressure of gas.
The amount of gas in the tube (in terms of mass and moles): C
It is a constant entity. As mass of gas once taken can not be changed by changing temperature, pressure etc.
The radius of the tube: C
The radius of tube cannot change at any rate.
The temperature of the gas (changed by the water surrounding it): V
It can be changed by changing the temperature of water surrounding it.
The type of gas: C
It can never be changed.
The pressure of the gas: V
It can be changed by simply changing temperature and volume of gas.
