Which among the three states of matter has a definite shape and size?

A mole of any substance contains ___

Who proposed the Law of Definite Composition?

1 mole of ammonia is of 17 g. Then what is the mass of 0.3 moles of ammonia?

What is the abbreviation of amu?

The exact value is 150m. A students record it as 140.1m in 1st turn and 140.8m in the 2nd turn. Comment his/her recordin…

Which of the following is true regarding molecular formula?

What is the symbol of the amount of substance’s S.I. unit?