Question

Besides being related to a number, a mole
has one more advantage over a dozen or a
gross. This advantage is that mass of 1 mole
of a particular substance is also fixed.
The mass of 1 mole of a substance is equal
to its relative atomic or molecular mass in
grams. The atomic mass of an element gives
us the mass of one atom of that element in
atomic mass units (u). To get the mass of
1
mole of atom of that element, that is, molar
mass, we have to take the same numerical
value but change the units from u' to'g'. Molar
mass of atoms is also known as gram atomic
mass. For example, atomic mass of
hydrogen=lu. So, gram atomic mass of
hydrogen = 1 g.
1 u hydrogen has only 1 atom of hydrogen
1 g hydrogen has 1 mole atoms, that is,
6.022 x 1023 atoms of hydrogen.
Similarly,
16 u oxygen has only 1 atom of oxygen,
16 goxygen has 1 mole atoms, that is,
6.022 x 1023 atoms of oxygen.
ram molecular mass or molar meaning in pbi​

Answer 1

Answer:

1 gross = 144 nos. Besides being related to a number, a mole has one more advantage over a dozen or a gross. This advantage is that mass of 1 mole of a particular substance is also fixed.

Explanation: