Objective: Verify Kirchhoff’s First LawMaterials: Power source (battery) _ Set of resistors with different values _ Connecting wires _ Switch _ Main ammeter to measure total current _ Branch ammeter to measure current in each branchSteps: Construct an electric circuit using the available components.......

Objective: Preparation of ethene gas from ethyl alcohol (ethanol) and identification of the dehydration reaction of alcohols.Materials: Bunsen burner _ Round-bottom flask _ Thermometer _ Ethanol (ethyl alcohol) _ Concentrated sulfuric acid _ Bottle containing sodium hydroxide solution _ Water trough......

Where Do Microorganisms Come From?