Answer:
(a) (i)
Mass of reactants
= Mass of products
x +5.85 = 14.35+8.5
x + 5.85 =
22.85
x = 22.85
-5.85
x =17g
Therefore, silver
nitrate is 17 g.
(ii)It is
based on law of conservation of mass which states that matter can neither be created
nor be destroyed in a chemic reaction.
(b) Molar
mass of
= 100g
100 g ofmol
molecules
50g of
molecules
(c) Mass of
1 mole of gas = 2 x 14 = 28 g
mass of 0.5 mole of gas = 28 x 0.5
=14 g
(d) Molar
mass of NaCl = 23 + 35.5 = 58.5 g
58.5g of NaCl contains molecules
50 e or NaCl will contain
= 5.147 x1023
molecules
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