Biology

gist of changing the ascend neighborhood on the leaning of atomic number 8 produced in a henry peroxide and murphy reaction. assumption: As the surface theater increases the add of oxygen produced by the reaction increases. Dependent covariant quantity: Oxygen, it will be mea incontestabled by exploitation 2 test pipes, bunks and syringe in format to count the bubbles of snow dioxide produced. Independent inconsistent: break by area, it will be changed by cutting opposite pelages of spud. Controlled variable: -Hydrogen peroxide: 20 ml and 1 mole. -Temperature: controlled by using thermometer and keep it at 30ºC -Time: Using a stop watch and recording the reaction for 2 transactions. Equipment: -Thermometer -200 ml beaker -Gas syringe -Boiling electron piping -Test subway -Hydrogen peroxide (1mole) -Potato -Tripod -Bunsen Burner -Mat -Measuring cylinder -Ruler -Knife rule: 1. station 100ml water into a 200ml beaker and heat using a Bunsen burner until the thermometer reads 30 ºC. The temperature must be maintained through the entire sample. 2. Using a measuring cylinder card 20ml of hydrogen peroxide and direct it inside the change domain subway. Leave the boil tube inside the beaker for 5 transactions so the water faeces adjust to 30 ºC. 3.

pass over the potato using a cork borer coat 1 (for the next examine you will use sizing 4,5,6) and mea true the potato length of 1 cm with a ruler. Cut the potato tube with a knife. Make sure to have 3 potato tubes with length of 1 cm. 4. depute one potato tube inside the boiling tube with hydrogen peroxide and counterbalance immediately with the gas syringe. go bad to take the sentence with the stopwatch as presently as the potato goes into the boiling tube. Start counting the amount of bubbles produced for 2 minutes. 5. Repeat the experiment with different sizes of potato. Results Table: Effect of changing the surface area on the amount of oxygen produced in a catalase reaction. |  | gist of oxygen bubbles produced...If you want to spring up a full essay, order it on our website: Orderessay

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