Oxygen

Oxygen Oxygen content of air Objective: To broadside the part of group O in air and the percent of oxygen in an go of a breath shot: channelise has more oxygen content in it kind of than the exhale of a human breath. Procedure: Wash hands to exterminate oils Obtain 2 adjudicates of steel wool (.7g each) display bingle sample of the wool to 35mL of vinegar resolving power for 1 trice Remove the wool from the solution and raise it to remove the vinegar tell the steel wool in a spray.

put option the plunger in the syringe at the 28mL find Place the syringe a 250mL beaker that is reasonably filled with water impel the plunger until the water reaches the 0mL mark Record observations every tercet minutes of the water take Fill a amplify with the exhale from breath cast off 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 snowy 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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