(b) : 1mole of Mg3 (PO4 )2 => 3moles of Mg atom + 2 moles of P atom + 8 moles of O atom
8 moles of oxygen atoms are present in = 1mole of Mg3 (PO4)2 0.25mole of oxygen atoms are present in = (1 x 0.25)/8
(i) In an H2S molecule, three atoms are present; two of hydrogen and one of sulphur.
(ii) In a PO43- ion, five atoms are present; one of phosphorus and four of...
A Mg2+ ion and Mg atom differ by two electrons.
103 moles of Mg2+ and Mg atoms would differ by
103 × 2 moles of electrons
Mass of 2 ×103 moles of electrons...
