by Sunday | Aug 20 | Chemistry WAEC
30cm³ pf hydrogen at s.t.p combine with 20cm³ of oxygen to form steam according to the following equation 2H2(g) + O2(g) → 2H2O(g). Calculate the total volume of the gaseous mixture at the end of the reaction A. 50cm³ B. 35cm³ C. 30cm³ D. 25cm³ Correct Answer: Option...
by Sunday | Aug 20 | Chemistry WAEC
A. is inflammable B. is diatomic C. exhibits isotopy D. is a component of water Correct Answer: Option A – is inflammable
by Sunday | Aug 20 | Chemistry WAEC
Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g) [Zn = 65; 1 mole of a gas occupies 22.4dm³ at s.t.p] A. 0.040dm³ B. 0.896dm³ C. 5.82dm³ D. 8.62dm³ Correct Answer: Option B – 0.896dm³ Explanation Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g) 65g of Zn produces 22.4 dm³ of H2; .:...
by Sunday | Aug 20 | Chemistry WAEC
A. they collide without loss of energy B. they move about in straight lines C. the distances between them are negligible D. the volume occupied by them is negligible Correct Answer: Option A – they collide without loss of...
by Sunday | Aug 20 | Chemistry WAEC
A. mass B. density C. rate of diffusion D. number of molecules Correct Answer: Option D – number of molecules
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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