2. A weather balloon holds 20.0L of air. As it rises, the temperature changes from 85.0°C to -30.0°C. What is the volume of the balloon at this height? A mechanic accidentally drops a can of spray paint into the flame from his welding torch. If the can has an initial pressure of 30.0 psi, what is the final pressure on the can, in atm, if the torch heats it from 25.0°C to 80.0°C.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.