Oxygen :: essays research papers

Oxygen content of air Objective: To measure the percent of oxygen in air and the percent of oxygen in an exhale of a breath Hypothesis: Air has more oxygen content in it rather than the exhale of a human breath. Procedure: Wash hands to remove oils Obtain 2 samples of steel wool (.7g each) Expose one sample of the wool to 35mL of vinegar solution for 1 minute Remove the wool from the solution and shake it to remove the vinegar Place the steel wool in a syringe. Put the plunger in the syringe at the 28mL mark Place the syringe a 250mL beaker that is slightly filled with water Pull the plunger until the water reaches the 0mL mark Record observations every three minutes of the water level Fill a balloon with the exhale from breath Put 100mL of water in the balloon 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 the air from the balloon into the syringe Repeat steps 6 - 9 with this syringe. Data and observations: (THE GRAPH WILL GO HERE!!!!!) Conclusion: The oxygen combined with the steel wool in both syringes. This is apparent because rust was formed on both samples. The water came up to the 5.5mL mark on the syringe with the air in it, while the syringe with the breath only reached 4.5mL. Therefore, concluding that the oxygen content of air is higher than the oxygen content in a human breath. Albertson’s Brand Condensed Chicken Noodle Soup has many different ingredients within the steel container. These ingredients are as follows: Water, enriched egg noodles (enriched wheat flour [niacin, ferrous sulfate, thiamine mononitrate, riboflavin, folic acid] , eggs) chicken, salt, modified corn starch, chicken fat, dextrose, soybean oil, monosodium glutamate, soy protein isolate, natural flavoring, garlic powder, beta carbonate, sodium phosphate, paprika, and onion concentrate.   Ã‚  Ã‚  Ã‚  Ã‚  Thiamine mononitrate, also known as Vitamin B, is a white crystalline powder. It has a positive reaction. The Chemical formula is C12H17N5O4S. â€Å"Thiamine Mononitrate is stable for at least 36 months when stored in the unopened container. It is stable in acid solutions at a pH less than 4.0 but deteriorates rapidly in neutral or alkaline solutions, especially when exposed to air. Moisture and contact with metal accelerates oxidation and reduction.