by Sunday | Aug 25 | Chemistry WAEC
A. KCIO3 B. CI2O7 C. ZnCI2 D. HCI E. NaCIO Correct Answer: Option E – NaCIO
by Sunday | Aug 25 | Chemistry WAEC
A. ∆H -T is zero B. ∆H-T∆ S is positive C. ∆H-T∆ S is negative D. ∆S is zero E. ∆S is positive Correct Answer: Option C – ∆H-T∆ S is negative
by Sunday | Aug 25 | Chemistry WAEC
A. 64g B. 32g C. 7.1g D. 6.4g E. 3.2g Correct Answer: Option B – 32g
by Sunday | Aug 25 | Chemistry WAEC
A. is a p-block element B. is extracted from cassiterite SnO2 C. is used for protecting iron containers from corrosion D. combines with copper to form the alloy brass E. shows two oxidation states, + 2 and + 4 in most of its compounds Correct Answer: Option D –...
by Sunday | Aug 25 | Chemistry WAEC
A. lithium B. magnesium C. potassium D. calcium E. aluminium Correct Answer: Option E – aluminium
by Sunday | Aug 25 | Chemistry WAEC
A. -46KJ mol -1 B. -184KJmol -1 C. -92KJmol -1 D. 184KJmol -1 E. +46KJmol -1 Correct Answer: Option A – -46KJ mol -1 Explanation In the reaction, the enthalpy of formation 2 mole of NH3 is – 92kJ. Therefore the standard ΔH of formation = −92kJ/2...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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