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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":426},"rYZetuEsH95t7C4soLDnAqgUaZFGhq","q","A gaseous metallic chloride MClx consists of 20.22% of M by mass. The formula of the chloride is?
\n[M = 27, Cl = 35.5]","ans",[414],2,"1999","course","chemistry","exp","Percentage by mass of M = 20.22%
\nPercentage by mass of Cl = ?
\n100 - 20.22 = 79.78%
\nMass given ration of M
\nM = 20.22/27 = 0.75
\nChlorine = 79.78/35.5 = 2.24
\nDivide by the smallest
\nM = 0.75/0.75 = 1
\nCl = 2.24/0.75 = 3
\n∴ The formula = MCl3","opts",[422,423,424,425],"MCl","MCl₂","MCl₃","M₂Cl₆",7,"7","initComment","initReply","actionData","errors"]

JAMB - Chemistry (1999 - No. 7)

Explanation

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