One mole is the amount of a substance that contains as many particles as there are atoms in exactly 12 g of the carbon atom. So S.I. the system took mole as the seventh base fundamental quantity (symbol = mol).

Avogadro number denoted by N_A. Its value is 602213670000000000000000, also written as 6.022×10²³. It’s the number of entities in 1 mol of a substance. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance.

The answer is Avogadro’s number. One mole of any substance contains Avogadro’s number of particles. Avogadro number denoted by N_A. Its value is 602213670000000000000000, also written as 6.022×10²³.

One mole of any substance contains Avogadro’s number of particles. Its value is 6.022×10²³ atoms. But here it’s given 12.044 x 10²³ atoms, thereby dividing it by Avogadro’s number; 12.044 x 10²³ atoms/6.022×10²³ atoms = 2 moles. Hence it contains 2 moles of oxygen.

Let it be any compound, but one mole of a substance always contains Avogadro’s number of particles. In the above question, Avogadro’s number (6.022×10²³) is given by the letter “y”. so, in 1 mole of glucose, there is y number of particles.

One mole of any substance contains Avogadro’s number of particles. Its value is 6.022×10²³ atoms. But here the question is about 10 moles of a substance. So multiply the Avogadro’s number by 10. Therefore 6.022×10²³ x 10 = 6.022×10²².

The corrected statements are as follows: the value of Avogadro’s number is 6.022×10²³ atoms, one molecule of any substance contains Avogadro’s number of particles & 1 u = M_a/N_A. The correct option is that one mole is the amount of a substance that contains as many particles as there are atoms in exactly 12 g of the carbon atom.

One mole of sucrose is C₁₂H₂₂O₁₁ The individual mass of carbon is 12 amu, the individual mass of hydrogen is 1 amu & the individual mass of oxygen is 16 amu. But sucrose has 12 carbons, 22 hydrogens and 11 oxygens, that is 12 x 12 + 22 x 1 + 11 x 16 = 342g.

Given that, 1 mole of ammonia is of 17 g. 0.3 mole of ammonia contains 17 x 0.3g of mass. IT’s because the molecular weight of a given pcompound is directly proportional to the number of moles of the given compound.