Record the temperature of the water in the Calorimeter and the temperature of the boiling water. 7. Quickly pour the metal into the Calorimeter. 8. Stir the Calorimeter slowly with the thermometer.
Measure and record the mass of the test tube and metal. 5. Place the test tube containing the metal into the beaker of water and continue heating (10 min). Leave the test tube in the boiling water bath while you complete steps 6 and 7. 6.
17. Press START and turn on the stir bar. 18. After 10 seconds have elapsed, add hot water sample 19. Press STOP when the thermograph stabilizes 20.
Purpose: The purpose of this experiment is to measure the rate of increase (slope) of the water given two different starting points to the boiling point of 212 degree Fahrenheit in the span of time. The rate of increase in water temperature as it is heated given all control variables are the same such as one quart aluminum pot holding three cups of refrigerate and room temperature water. The study is to conduct weather if both types water will have the same slop of increase. Procedure: The first step was to fill a jug full of water and leave it in the fridge to cool down overnight and another jug full of water so that it becomes part of room temperature. Before the experiment, take out the fridge water and measure out three cups and pour it into the one quart pot and measure the water temperature before placing it on the stove.
Allow the mixture to cool for a few minutes then filter it, using either gravity or vacuum filtration. (We shall be using vacuum filtration.) Wash the residue in the funnel once with a little water and collect all the filtrate. 4. Pour all the filtrate and washings into a 250cm3 volumetric flask.
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.
Take the fine soil from the bottom pan of the sieve set, place it into a beaker and add 125mL of the dispersing agent. Stir the mixture until the soil is thoroughly wet. Let the soil soak for at least ten minutes. 2. While the soil is soaking, add dispersing agent into the control cylinder (Sodium Hexametaphosphate 125ml) and fill it with water to the mark.
Now right-click on the flask, and select Heating Mantel from Distillation Equipment then, Right-click on the flask, and select Distillation Head from Distillation Equipment last, Right-click on the flask, and select Condenser from Distillation Equipment. Now, right-click on the flask, and select Distillation Take-off from Distillation Equipment. From the Equipment menu, select the 100 mL Graduated Cylinder. Place it under the end of the distillation take-off. The graduated cylinder will collect the distillate.
Using a measuring cylinder, pour 20 cm3 of 0.01M saturated cobalt (II) chloride solution at 0℃ and pour about 100 cm3 of deionized water to a 250 cm3 beaker. 2. Stir the mixture using a magnetic stirrer-hotplate. 3. Using a dropper, add 5 drops of concentrated hydrochloric acid to the solution.
Two drops of water were added to the cooled crucible. The crucible with lid completely on it was placed above the clay triangle. The product was reheated for three minutes. The crucible and product was heated for about five to eight minutes. BE SURE THE CRUCIBLE IS COOL.