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Waec Expo

WAEC 2020 Chemistry Practical Free Answer & Questions

CHEMISTRY PRACTICAL COMPLETE TYPED ANSWER ============================================ (1a) Burette reading (cm)³|1st reading|2na Reading|3rd reading| Final |15.25|30.53|45.79| Initial |0.00|15.25|30.53| Volume of acids used |15.25|15.28|15.26 Average volume of acid used =15.25+15.26/2 =15.255cm³ =15.26cm³ Or =15.27cm³ (1b) Given; mass […]