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These resources are designed to help you familiarize yourself with the exam format, identify key topics, and practice effectively. Whether you're preparing for the May/June or GCE sessions, our curated materials provide both objective and theory questions to enhance your study sessions.","tags","waec nigeria west africa examination council","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",18,"createdOn",1755991949910,"updatedOn","questionsCount",27220,"courseCount",23,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"tVivUkGjyaVfRU0Mm4ncGEHLcqvXxS","q","Calculate the mass of sodium hydroxide in 5.00 dm³ of a 0.125 mol dm^-3 solution. [NaOH = 40 g mol^-1]","ans",[414],3,"2002","course","chemistry","exp","1 mole of NaOH per dm³ has a mass of 40g.
\nmass of NaOH in 0.125mole
\n= 0.125 x 40 = 5g.
\nmass in 5.00 dm³ of the solution.
\n= 5 x 5 = 25.0g.","opts",[422,423,424,425],"0.0156 g","0.625 g","1.00 g","25.0 g",29,"29","initComment","initReply","actionData","errors"]

WAEC - Chemistry (2002 - No. 29)

Explanation

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