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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",5,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":414},"3kfR9FoG9tW4slmlocAovo8OFRtbLs","q","What is the percentage by mass of oxygen in Al₂(SO₄)₃. 2H₂O?
\n[Al = 27, S = 32, H = 1, O = 16]","ans",[414],3,"2003","course","chemistry","exp","Al₂(SO₄)₃. 2H₂O
\n2 * 27 + 3*32 + 14 * 16 + 4 * 1 =
\n54 + 96 + 224 + 4 = 378
\n% O₂ = (224/378) * (100/1) = 59.25%","opts",[422,423,424,425],"14.29%","25.39%","50.79%","59.25%","3","initComment","initReply","actionData","errors"]

JAMB - Chemistry (2003 - No. 3)

Explanation

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