Oxygen

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

put option the plunger in the syringe at the 28mL mark Place the syringe a 250mL beaker that is slightly filled with water impel the plunger until the water reaches the 0mL mark Record observations every tercet minutes of the water level Fill a amplify with the exhale from breath Put 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 clean it Put the steel wool in another syringe and then release th...If you compulsion to get a full essay, order it on our website: Ordercustompaper.com

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