The molar mass of $\mathrm{Ne}$ atoms is $20\frac{\mathrm{g}}{\mathrm{mol}}$. How many moles are there in $100 \mathrm{g}$ of neon? 

When 6 grams of hydrogen gas was burnt with 48 grams of oxygen, 54 grams of water was produced. In another experiment when electric current was passed through 36 grams of water, 4 grams of hydrogen and 32 grams of oxygen were formed.

Calculate the mass ratio of hydrogen and oxygen which combine to form water.

When 6 grams of hydrogen gas was burnt with 48 grams of oxygen, 54 grams of water was produced. In another experiment when electric current was passed through 36 grams of water, 4 grams of hydrogen and 32 grams of oxygen were formed.

Calculate the mass ratio of hydrogen and oxygen formed when electric current was passed through water. 

When 6 grams of hydrogen gas was burnt with 48 grams of oxygen, 54 grams of water was produced. In another experiment when electric current was passed through 36 grams of water, 4 grams of hydrogen and 32 grams of oxygen were formed.

Write the name of the law of chemical combination which is verified by these experiments.