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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":414,"_415":416,"_263":370,"_417":418,"_419":420,"_110":425},"yWa7727LPWZ30Z1x7CKAs0Dbuqz6Ls","q","Calculate the volume in cm³ of oxygen evolved at s.t.p when a current of 5A is passed through acidified water for 193s?
\n[F = 96500 C mol¹. Molar volume of a gas at s.t.p = 22.4dm³]","ans",[95],"2016","course","chemistry","exp","Q = 193 x 5 = 965C
\n40H \\(\\mapsto\\) 2H₂O + O₂ + 4e
\n4 x 96500C = 22.4dm³
\n965C = x
\n
\nx = \\(\\frac{22.4 \\times 965}{4 \\times 96500}\\)
\n= 0.056dm³","opts",[421,422,423,424],"0.056dm³","0.224dm³","224.000dm³","56.000dm³",38,"38","initComment","initReply","actionData","errors"]

JAMB - Chemistry (2016 - No. 38)

Explanation

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