Atoms and Molec...

Hydrogen combines with nitrogen in a 3:14 weight ratio to form ammonia. If every molecule of ammonia contains three atoms of hydrogen and one atom of nitrogen, an atom of nitrogen must weigh :

The sum of masses of the atoms in the molecules is known as :

The weight of one molecule of a compound of molecular formula $$C_{60} H_{122}$$ is:

Which of the following statement is wrong?

Molecular mass of nitric acid is:

Hydrogen combines with oxygen in a 1:8 weight ratio to form water. If every molecule of water contains two atoms of hydrogen and one atom of oxygen, an atom of oxygen must weigh:

1.008 grams of hydrogen combines with 35.453 g of chlorine to form 36.463 g of a pure compound (hydrogen chloride). Dalton's explanation for this experimental fact might be: 

Which among the following has molecular mass of 36.5 u?

In the procedure shown above, a calcium chloride solution is mixed with a sodium sulfate solution to create the products shown. Which of the following is illustrated by this activity?

Mass can neither be created nor destroyed. This is in agreement with which law of chemical combination?