by Sunday | Oct 15 | Chemistry JAMB
A. 20 B. 25 C. 60 D. 75 Correct Answer: Option B – 25 Explanation Let the relative abundance of oxygen with mass 37 be x% ∴ The relative abundance of the isotope of mass 35 = (100 – x)%. Total mass of isotopes of mass 37 = 37x, while that of 35 = 35(100...
by Sunday | Oct 15 | Chemistry JAMB
A. electrovalency B. electron affinity C. electropositivity D. electronegativity Correct Answer: Option D – electronegativity
by Sunday | Oct 15 | Chemistry JAMB
A. spherical B. elliptical C. spiral D. circular Correct Answer: Option A = spherical
by Sunday | Oct 15 | Chemistry JAMB
A. 2 valence electrons B. 3 valence electrons C. 7 valence electrons D. 8 valence electrons Correct Answer: Option D – 8 valence electrons
by Sunday | Oct 15 | Chemistry JAMB
A. 5s B. 20s C. 40s D. 60s Correct Answer: Option C – 40s Explanation Relative molecular mass of CH4 = 12 X 1 + 4 = 16 Relative molecular mass of SO2 = 32 + 10 X 2 = 64 tSO2/tCH4 = √MSO2/MCH4 t/20 = √64/16 = √4 t/20 = 2 ∴ t = 20 X 2 =...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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