As an atom is so small a particle that it cannot be seen or isolated ,therefore it is impossible to determine the actual mass of a single atom by weighing it. The problem was finally solved by Avogadro's hypothesis.If equal volumes of two different gases are taken under similar conditions of temperature and pressure and then weighted, the ratio of their masses will be equal … [Read more...] about Atomic and Molecular mass
molecular mass
Molecular mass
Question 1 What is a chemical formula? Question 2 Give few examples of formulae of elements? Question 3 Give few examples of formulae of compounds? Question 4 Define molecular mass? Chemical Formula A chemical formula represents the composition of a molecule of the substance in terms of the symbols of elements present in the molecule. Formulae of Elements For … [Read more...] about Molecular mass