Caloric Content of Food Exercise 1: Determination of Caloric Content of Three Foods Abstract: First I gathered all the equipment needed. Then I zeroed out my balance and measured the mass of the empty beaker. I then put 50mL of water in the beaker and measured the mass again. I put a piece of foil at the bottom of my burner stand and then placed the beaker with water on the beaker stand. I then took the initial temperature of the water.
-Get six wooden splints that have been soaked in water. -Place them in the beaker half filled with water to continue soaking at your lab station. -Fill a second 250-mL beaker about half-full with tap water. Label this beaker “rinse water.” -Light the Bunsen burner. -Take one of the wooden splints and dip the soaked end in one of the metallic salts,
Once the procedure was performed three times, the collected iron fillings mass was obtained by using the digital weighing scale. After removing the iron fillings, the sand was removed next by using the property of sand that the sand was completely insoluble in the water. The iron free solids mixture was dissolved in 15.00 mille liters of distal water and heated by using stove top in a beaker. The solution was mixed for a while the benzoic acid and salt were allowed to dissolve completely and solubility was enhanced by heating the solution. The solution was decanted into another beaker.
The seaweed will be cut and weighed (6 grams) and transferred into 150 mL solution. Using 40 mL of distilled water the seaweed is heated just under boiling for five minutes. After cooling, a filter will be used to remove the seaweed from the extract. The goal is to transfer 2-3 mL of filtrate into the evaporating dish. We now slowly pour the solution into a funnel with filter paper.
Then 5mL of HCl was added to copper to completely remove all traces of zinc. Once the bubbling had stopped, the rest of the liquid was decanted away from the copper. Then the copper recovery set up was put together using tubing, Buchner funnel, filter paper and suction flask. Then the filter paper was weighed before placing it in the funnel and wetted down. The aspirator was turned to medium high, and then the copper was poured onto wetted filter paper.
How many moles of zinc are in a penny? Purpose: this lab is being performed so students can visualize a single-replacement reaction and calculate how much zinc is in a post-1982 penny? Materials: A post- 1982 penny steel wool 3 M HCl graduated cylinder Small beaker tongs Balance paper towels Sharp edge Safety: 3 M hydrochloric acid (HCl) is fairly caustic. Wash hands immediately is you spill on them. Wear goggles.
Dear Bob So you want to get salt from rock well all you have to do is. First you add some water to the rock salt (a mixture of sand mud and salt) Next warm and stir the mixture of rock salt and water for about 5 minutes. After Fold a filter paper in to quarters fit the cone of filter paper inside a funnel or something like a funnel. Once that’s done pour the rock salt and water mixture through the filter paper and allow the mixture to filtrate (to drip into the funnel only the pure salt dissolves) Take care when pouring that you don’t fill above about half way of the filter paper. The salt solution passes through the filter paper but the sand and dirt are trapped in the filter paper.
6 grams of dried seaweed, cut into ½ inches should be places into a 150 mL beakers that will later be filled with ¾ distilled or deionized water. Then, the seaweed should be agitated with a stirring rod to remove monosodium glutamate. 2. After the water is poured off in the sink, 40 mL of distilled water should be added to the seaweed, and should be heated for 5 minutes with a Bunsen burner. 3.
Lab 2: If we heat sand then conduction will occur. III. Materials Lab 1: * 500mL Beaker * Water * Hot Plate * 2 Thermometers * Food coloring * Stopwatch * Oven mitt Lab 2: * 500 Ml beaker * Water * Hot Plate * 2 Thermometers * Beaker of sand – about 150-200 mL * Stopwatch * Oven mitt IV. Procedure Lab 1 1. Gather all materials 2.
We utilized crucibles, crucible lids, clay triangle and the technique of bending down the edges of the triangle. This setup allowed us to expose Epsom salt to high heat in a vessel designed for high temperature exposure. Reagents. We used a small carton of Epsom salt provided by the stockroom and a large blue bag of Epsom salt provided by the instructor. Safety Considerations.