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.
Place the test tube, with the zinc in it, in the water and continue heating. 5. Fill the Calorimeter with the water to 45mL, measuring the amount of the water in the Calorimeter. 6. Record the temperature of the water in the Calorimeter and the temperature of the boiling water.
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.
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.
Experiment 19 Part A 1. Press ON/OFF button 2. Press MAIN MENU F2 F1 3. Make and ice bath in a 150 mL beaker 4. Press CALIBRATE enter 0.0C when promted press ENTER insert temperature probe and swirl it around until the screen reads 0.0C press ENTER 5.
As the water begins to boil, record the temperature. Allow the water to boil off. you then will see only a black mass with exactly two bouncing spheres when the water is completely gone. Once the water is gone, remove the flame from the beaker and allow it to cool to 20 degrees Celsius. Weigh the beaker this will be the weight of the salt record its mass.
I repeated the heating and measuring process 2 more times recording the masses in the data table. I then calculated the mass of the alum by subtracting the final mass of the cup and the alum from the mass of the cup. I then calculated the mass of the water
The second experiment, procedure 1, combined [Co(NH3)5 (H2O)]Cl2 (0.0060M, 1.52g) and (25mL) of distilled water to an 125mL Erlenmeyer flask. The flask was gently heated (dial 5-6) and stirred until all the compound was dissolved. The heated solution was then vacuum filtered through a fritted funnel and the filtrate was cooled in an ice bath until the
2. Measure and pour 10cm3 of Iodine solution and 10cm3 of starch solution into separate test tubes. 3. Place both test tubes into the beaker containing the ice water. 4.
3-Crush the ice and put it in the funnel trying to pack it closely round the heater . 4-Turn on the power supply and start the stop watch at the same time. 5-Record the voltage V and the current I . 6-Leave the heater on for 3 minutes. 7-Switch off , remove the beaker and weigh it .