Explain the following :
Law of definite composition

Explain the rate law.

State and explain law of definite proportions

State law of constant composition.

Complete the following statement- Composition of brass is-

Explain the following phenomena with the help of Henry's law Painful condition known as bends.

Explain the following phenomena with the help of Henry's law Feeling of weakness and discomfort in breaking at high altitude.

What is Prouÿs law of constant composition ?