Answer:
Molar mass : Mass of the one mole of the substance is called molar mass
Molar mass is numerically equal in g(gram) to atomic mass in u(unified mass).
Molar mass of the NH3
= 14g + (1×3)g
= 17g/mol
Mass = number of moles × molar mass
4.25 = number of moles × 17
4.25/17 = number of moles
0.25 = number of moles
One mole of any substance contains avogadro number (6.022×10^23) of molecules.
Molecules = number of moles×6.022×10^23
Molecules = 0.25 × 6.022×10^23
Molecules = 1.5055×10^23 “ NH3 ” molecules.
Then,
Atoms = 4 × 1.5055 × 10^23 (because there are 4 atoms i.e 3 atoms of Hydrogen and 1 atom of oxygen )
Atoms = 6.022 × 10^23 “ NH3 atoms ”Molar mass : Mass of the one mole of the substance is called molar mass
Molar mass is numerically equal in g(gram) to atomic mass in u(unified mass).
Molar mass of the NH3
= 14g + (1×3)g
= 17g/mol
Mass = number of moles × molar mass
4.25 = number of moles × 17
4.25/17 = number of moles
0.25 = number of moles
One mole of any substance contains avogadro number (6.022×10^23) of molecules.
Molecules = number of moles×6.022×10^23
Molecules = 0.25 × 6.022×10^23
Molecules = 1.5055×10^23 “ NH3 ” molecules.
Then,
Atoms = 4 × 1.5055 × 10^23 (because there are 4 atoms i.e 3 atoms of Hydrogen and 1 atom of oxygen )
Atoms = 6.022 × 10^23 “ NH3 atoms ”Molar mass : Mass of the one mole of the substance is called molar mass
Molar mass is numerically equal in g(gram) to atomic mass in u(unified mass).
Molar mass of the NH3
= 14g + (1×3)g
= 17g/mol
Mass = number of moles × molar mass
4.25 = number of moles × 17
4.25/17 = number of moles
0.25 = number of moles
One mole of any substance contains avogadro number (6.022×10^23) of molecules.
Molecules = number of moles×6.022×10^23
Molecules = 0.25 × 6.022×10^23
Molecules = 1.5055×10^23 “ NH3 ” molecules.
Then,
Atoms = 4 × 1.5055 × 10^23 (because there are 4 atoms i.e 3 atoms of Hydrogen and 1 atom of oxygen )
Atoms = 6.022 × 10^23 “ NH3 atoms ”
Explanation:
