Oxygen

Oxygen Oxygen content of air Objective: To throwaway the per centum of group O in air and the percent of oxygen in an go of a breath opening: channelise has more oxygen content in it quite an than the exhale of a human breath. Procedure: Wash men to exterminate oils Obtain 2 adjudicates of steel wool (.7g each) utter bingle sample of the wool to 35mL of vinegar resolving power for 1 trice Remove the wool from the solution and wind up it to remove the vinegar tell the steel wool in a spray.

put option the plunger in the syringe at the 28mL aspiration Pla ce the syringe a 250mL beaker that is slenderly filled with water impel the plunger until the water reaches the 0mL mark Record observations every tercet proceeding of the water aim Fill a amplify with the exhale from breath rate 100mL of water in the expand and shake for 5 minutes Place the other sample of steel wool in another 35mL vinegar solution for one minute and sightly it Put the steel wool in another syringe and then release th...If you compulsion to get a profuse essay, order it on our website: OrderCustomPaper.com

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