Distilled water

The purpose of this lab is to calculate the chemical formula of a hydrate compound made up of copper, chlorine, and water molecules by using the law of definite proportions. The water of hydration of the copper chloride hydrate sample will be determined as well as the mass of copper and chlorine through a chemical reaction. The results will be used to calculate the moles of copper and chlorine and then the empirical formula of the compound. Techniques used: In this experiment, different…

must be prepared for testing by: • Dissolving the solution in distilled water • Filtering the dissolved solution • Evaporating the water to increase the concentration Equipment 1 beaker 50ml of distilled water Stirrer 1 Funnel Filter paper 1 crucible 1 Bunsen burner 1 heatproof mat 1 tripod 1 teaspoon of soil sample 1 conical flask 1 Pipeclay triangle Method 1. Place the soil sample in the beaker and add 50ml of distilled water and stir until dissolved. 2. Place the funnel into the…

is increased, then the percent change in the mass of potatoes cells will decrease. Abstract: In this experiment we will be testing how salt concentrations affects potatoes. First, potatoes were peeled and prepped for the experiment; while a salt water solution was being obtained. Potatoes were submerged and left in the solution for two hours, and during that time the potato lost mass. This loss in mass was due to the liquid molecules in the potato being taken out into the salt solution, but why…

experiment include: one white egg, a plastic cup labeled “egg”, vinegar, distilled water, corn syrup, a tape measure, saran wrap, a triple beam balance, a camera (can be on a phone), and a way to record the data (e.g. pencil and paper). The variable that is manipulated, or the independent variable, is the egg. The variable that is controlled, or the dependent variable, is the liquid (the vinegar, corn syrup, and distilled water) in the cup. Before the vinegar was added to the solution, the…

9/24/2015 Steps and Procedures 1. Blend a 120 g sample of each fruit separately a in a blender with about 50 mL of distilled water. Strain any extra pulp with a cheesecloth. You should have at least around 120 ml of substance. 2. Separate each of the liquids into half and put each half into its own separate individual beakers .So you should have 8 beaker with 100ml of each…

The dilutent was distilled water. The BSA was placed on the ice prior to being mixed into the four micro-tubes mentioned before. The 20ml dilution was added into the four micro-centrifuge tubes including the control. Two additional tubes were added, one with 20ml of distilled water and the other was unknown. After that, 980 micro liter diluted Bradford dye was added into the four microtubes and vortexed…

to lower pH. When we add it to water, an acid releases hydrogen ion. Hydrogen ions in water unite with the water molecules to form hydronium ions, thereby lowering the pH and increasing the acidity of water. Water exposed to air is gentle in nature acidic because it absorbs small quantities of CO2 from the atmosphere. The CO2 breaks down to carbonic acid to undergo dissociation to release hydrogen ions into water, lowering the pH. Prior to that, acid added to water increases…

the polycyclic aromatic hydrocarbons (PAHs) that are found in Texas’ water. Charcoal is currently the most typical agent used to sequester PAHs. In this experiment, two different Bentonite clays (zeolites) were synthesized, one magnetized and one not, to determine if either material could possibly be a better sequestering agent than charcoal. Introduction PAHs are a group of chemicals that pollute both the environment and water supply through the incomplete burning of coal, oil and gas, trash,…

analyses. Materials: • Electrophoresis chamber • Gel casting trays • Sample combs • Ethidium bromide • Loading buffer • Electrophoresis buffer • Transilluminator • DNA • Cotton swabs • Distilled water • Tablespoon of salt • Soap • Isopropanol • Dye, salt water • Agarose gel Procedure: Obtain 250mL of distilled water and add ½ tablespoon of salt. Dissolve the solution completely; transfer 1 ½ tablespoons into a cup. Then gargle the solution inside of your mouth for one minute. After you do…

hot water. Test 1a: put a known solution in tube 1 and add three drops of each of the 10 cation solutions. Add 8 drops 6 M HCl solution to tube 1 and do it one more time. If it forms precipitate, you should continue add HCl. Record this data on table 1a. Test 1b: Centrifuge the content of tube 1 and add a drop of 6 M HCl. If precipitate forms, you should continue add HCl until the supernatant remains clear. Centrifuge the tube 1 again and put them into tube 4. Add 1 mL of distilled water to…