by Sunday | Mar 16 | Chemistry WAEC
A. Oxidation number B. Atomic number C. Mass number D. Number of neutrons Correct Answer: Option B – Atomic number Explanation Elements are arranged in order of increasing atomic number
by Sunday | Mar 16 | Chemistry WAEC
A. C2H4 B. C3H4 C. C3H6 D. C4H8 Correct Answer: Option C = C3H6 Explanation Given the molecular formula, CH2. The empirical formula will be (CH2)n= 42 (12+(2×1))n=42 ⇒ 14n=42 n = 3, hence the empirical formula is...
by Sunday | Mar 16 | Chemistry WAEC
A. CH4 B. HCl C. NH3 D. NaH Correct Answer: Option D – NaH Explanation The bonding between a non-metal and a metal is an ionic bonding. In metal hydrides, Hydrogen takes on the ionic charge of -1, hence forming an ionic bond with the...
by Sunday | Oct 15 | Chemistry WAEC
A. It forms tetraoxosulphate (VI) acid with water B. It is an odourless gas C. It is an acid hydride D. It forms white precipitate with acidified barium chloride Correct Answer: Option C – It is an acid hydride
by Sunday | Aug 25 | Chemistry WAEC
The reaction represented by the equation C(s) + H2O(l) → CO(s) + H2(s) was carried out at 27°C if the enthalpy change was + 4500 J and the entropy change was + 12J, what was the free energy change? (∆G = ∆H – T∆S) A. – 4176 J B. +4176 J C. – 900 J D....
by Sunday | Aug 25 | Chemistry WAEC
A. Na3AI(OH)4 B. Na2AI(OH)3 C. NaAI(OH)3 D. Na4AI(OH)4 E. NaAI(OH)4 Correct Answer: Option E – NaAI(OH)4
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.