by Sunday | Mar 17 | Chemistry WAEC
A. oxygen B. carbon (IV)oxide C. ethene D. water Correct Answer: Option D – water Explanation In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules...
by Sunday | Mar 17 | Chemistry WAEC
A. Ammonium chloride B. Lead (i) trioxonitrate (V) C. Potassium trioxocarbonate (IV) D. Sodium hydrogen trioxocarbonate (IV) Correct Answer: Option C – Potassium trioxocarbonate (IV) Explanation Trioxoxcarbonates (iv) of Na & K are stable to...
by Sunday | Mar 17 | Chemistry WAEC
A. carbon-carbon single bonds are stronger than carbon-hydrogen bonds. B. Pentane has more covalent bonds to break C. Pentane does not burn easily as propane D. The intermolecular forces in pentane are stronger than those of propane Correct Answer: Option B –...
by Sunday | Mar 17 | Chemistry WAEC
A. nearness to other industrial establishments B. nearness to raw materials C. favourable climate conditions D. availability of storage facilities Correct Answer: Option B – nearness to raw materials
by Sunday | Mar 17 | Chemistry WAEC
A. Na and F B. Na and CI C. Na and Br D. Na and I Correct Answer: Option A – Na and F Explanation – sodium has an electronegativity of 0.93 – Hence; sodium and fluorine have the highest difference. Fluorine 4.0 Chlorine 3.0 Bromine 2.8 Iodine...
by Sunday | Mar 17 | Chemistry WAEC
A. Periodicity B. Constant composition C. Multiple proportions D. Conservation of mass Correct Answer: Option D – Conservation of mass Explanation The law of conservation of mass is important because it allows us to predict the amount of product formed in a...
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