by Sunday | Dec 10 | Chemistry WAEC
A. have octahedral shape B. have same density C. form carbon(IV) oxide on combustion D. conduct electricity Correct Answer: Option C B. have same density Explanation A diamond is pure carbon. Graphite is pure carbon. Both will burn to form carbon...
by Sunday | Dec 10 | Chemistry WAEC
³A. 1000.00 B. 100.00 C. 10.00 D. 0.01 Correct Answer: Option D B. 100.00 Explanation Dilution factor = molar conc. of diluted // molar conc. of undiluted = 0.001//0.1=0.01
by Sunday | Dec 10 | Chemistry WAEC
A. Activation energy is high B. A catalyst is required C. It occurs reversibly D. Heat energy is absorbed Correct Answer: Option D D. Heat energy is absorbed Explanation Endothermic reactions are those reactions which absorb energy from the surroundings and result in...
by Sunday | Dec 9 | Chemistry WAEC
A. high melting point B. hardness C. octahedral shape D. durability Correct Answer: Option B B. hardness Explanation Diamonds are very hard, they are often used as an abrasive.
by Sunday | Dec 9 | Chemistry WAEC
A. high molecular mass B. low molecular mass C. high degree of purity D. readily available Correct Answer: Option B B. low molecular mass Explanation Characters of a good primary standard include: high purity, low reactivity with the air or surrounding environment,...