On the first bottle I learned how to spew Pepsi all over the room. For the other two bottles I found that each one contained about 2.2 grams of carbon dioxide under pressure dissolved in the liquid! That is enough gas to fill up a liter bottle at standard temperature and pressure! This is not all of the carbon dioxide in the soda. There is still carbon dioxide gas dissolved in the liquid at atmospheric pressure.
Place a two-gram sample of the following compounds in a separate watch glass: * Watch Glass #1: 2g of Calcium Chloride * Watch Glass #2: 2g of Citric Acid * Watch Glass #3: 2g of Phenyl Salicylate * Watch Glass #4: 2g of Potassium Iodide * Watch Glass #5: 2g of Sodium Chloride * Watch Glass #6: 2g of Sucrose 1. Under each watch glass place a Bunsen burner. 2. In the chart provided in the observations section, record the order of melting. If the compound does not melted after 2 minutes put “no” in the table.
Care must be taken when squeezing the pipet bulb on the filter pipet. Too much pressure might cause the filter to leak or fall off. Add about 2 mL of fresh tert-butyl methyl ether to the solid in the RB flask, warm briefly, let the solids settle for a minute, and pipet the liquid to the centrifuge tube as before. Again allow the solids to settle briefly in the centrifuge tube, then filter the liquid through the pressure filtration apparatus, into the same 25 mL Erlenmeyer flask. Doing a rinse such as this helps to ensure that any trimyristin that was left behind in the RB flask and centrifuge tube is not lost, thereby helping to ensure that
Materials & Methods Materials: · Scale · 4 6” Dialysis Tubing · 4 Transfer Pipets · Sugar · Scissors · Rubber Bands · 4 Same-Sized Coffee Cups · 250ml Graduated Cylinder · Tape Measure · Sauce Pan · 3 600ml Containers · Plastic Covering · Spoon Methods: 1.) Place 4 6” pieces of dialysis tubing into coffee cups full of tap with and leave them for two hours prior to beginning the experiment. 2.) As you wait, prepare your three sugar solutions. For the first solution, pour 5 grams of sugar into 250ml graduated cylinder and add water up to the 250ml mark.
15 Sept. 2013. <http://en.wikipedia.org/wiki/Sericulture>. "Quizlet." APHG. Quizlet, n.d.
After that, dissolve the sample in 2 mL of deionized water and shake the test tube for 1 to 1 ½ minutes to dissolve the solid. Place another dry test tube in a 50mL beaker and weigh it. Find a bottle of barium iodide and record the name and molar mass. Then, weight out either anhydrous barium iodide or barium iodide dehydrate into this test tube and dissolve is it in 2 mL of deionized water. Pour the contents of one of the test tubes into the other and a reaction should occur and you should see a white precipitate of barium sulfate form.
* The sodium carbonate solution was poured into the beaker with the calcium chloride solution. * A sheet of filter paper was folded in half twice and weighed. (1.1g)/(0.7g) * The filter paper was placed in a funnel in a paper cup. * The contents of the beaker were swirled to dislodge any participate from the sides and then slowly poured through the funnel. * 5ml of distilled water was poured down the sides of the beaker, swirled and poured into the funnel.
Once it is completely distilled, remove your filtered material and add 2 mL of dichloromethane. Swish the flask, and then place into a small beaker. Next, place the beaker with the distilled liquid on a heating mantle and heat to a gel like substance. Make sure not to burn it. The next processes that will be
Gravimetric Determination of Sulfate Purpose The purpose of this lab is to determine the percentage of sulfate in the hydrate by precipitating the sulfate as barium sulfate. Materials Filler paper Sodium sulfate Graduated cylinder Bunsen burner Watch glass Beakers (250 mL, 400 mL) Rubber bulb Graduated pipette Beaker tongs Funnel Filter Paper Sodium Sulfate Drying oven Wash bottle Stirring rod Silver nitrate Hydrochloric acid Distilled water Small test tube Procedures First, .4861 grams of sodium sulfate was placed into a clean 400mL beaker. Exactly 200mL of water and 1mL of HCl was added to the same beaker. A watch glass was placed on the beaker and the solution was heated using the Bunsen burner to a gentle boil. The watch glass was removed with the beaker tongs.
They were glucose, water, lemon juice, Coca Cola, egg batter, lemon-lime soda, diet lemon-lime soda, Kraft Italian dressing, skim milk and butter. The positive control was the glucose and the negative control was the water. Twenty drops of each sample of substance was added to the test tubes (in all there were 10 test tubes). After the solutions were added in their own test tube, 20 drops of Benedict’s reagent was added. Each individual test tube was placed in boiling water and removed after 5 minutes to test if