if you have a test tube containing a certain volume of two different compounds in solid...
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you have a test tube containing a certain volume of two different
compounds in solid...
4- Certain solid substances, known as hydrated compounds, have well-defined molecular ratios of water to some...
4- Certain solid substances, known as hydrated compounds, have well-defined molecular ratios of water to some other species. For example, calcium sulfate dihydrate (commonly known as gypsum, CaSO4 2H30), has 2 moles of water per mole of calcium sulfate; alternatively, it may be said that I mole of gypsum consists of 1 mole of calcium sulfate and 2 moles of water. The water in such substances is called water of hydration. In order to eliminate the discharge of sulfuric acid...
You have a large test tube in your drawer in lab. Its volume is 56.2 cubic...
You have a large test tube in your drawer in lab. Its volume is 56.2 cubic centimeters. You performed the volume measurement of the test tube and found it to be 54.4 cubic centimeters. What is the percentage error of your measurement?
Question1: Introduction Three aromatic compounds that have ortho-para directing and activating substituents will be brominated. The...
Question1:
Introduction Three aromatic compounds that have ortho-para directing and activating substituents will be brominated. The extent of activation will be judged by the number of bromine atoms that add to the benzene ring in each case. For each of the compounds shown below you will work out if a mono- di- or tri- brominated derivative formed following treatment with acetic acid and bromine in hydrobromic acid. This will be determined by measuring the melting point and interpreting the H...
Experiment 4C Directions Obtain three test tubes, each containing two layers. For each tube, you will...
Experiment 4C Directions Obtain three test tubes, each containing two layers. For each tube, you will be told the identity of the two layers, but you will not be told their relative positions. Determine experimentally which layer is organic and which layer is aqueous. Dispose of all thesemixtures into the waste container designated for halogenated organic wastes. After determining the layers experimentally, look up the densities of the various liquids in a handbook to see if there is a correlation...
You need to weigh your own large Pyrex test tube and know the empty mass, mass...
You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO3 mixture bet heating; mass with KCIO, mixture and catalyst and mass of all of the above after heating. To weigh the test tube, place it in an empty beaker to keep it upright. You may tare the weight of the bea you need to know the weight of the test tube for your calculations. Procedures: Weigh your clean, dry empty Pyrex test...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone Cyclohexanone Unknown Part D. Iodoform Test. Test Sample Tube 1 2-hydroxybutanal Prediction Observations Results (+ or -) Benzaldehyde Propanone Cyclohexanone Unknown Experiment 12 Identification of Aldehydes and Ketones O the b e t theader of each holding your breath as a st beward your nose. Record the derson the specified memes from O Ta Test g shes between ones that contain a methyl group...
You have accidentally torn the labels off two tubes, each containing a different plasmid, and now...
You have accidentally torn the labels off two tubes, each
containing a different plasmid, and now do not know which plasmid
is in which tube. Fortunately, you have restriction maps for both
plasmids, shown in the figure below. You have the opportunity to
test just one sample from one of your tubes. You have equipment for
agarose-gel electrophoresis, a standard set of DNA size markers,
and the necessary restriction enzymes.
A)Why won’t making a single cut (e.g. with HindIII) help...
A student is evaluating the solubility potassium (KClO3) at various temperatures. She dissolves 2.50 g of...
A student is evaluating the solubility potassium (KClO3) at various temperatures. She dissolves 2.50 g of KCLO3 in a total volume of 7.5 mL of water. a. Calculate the concentration of KClO3 in this solution. b. The student heats the solution up to 80 degrees Celsius, the removes the test tube containing the salt solution from the hot water bath. At what temperature would you expect to see the formation of salt crystals in the solution? c. If the solution...
Measurement and Accuracy Procedure Obtain 5 large test tubes (all the same size), a test tube...
Measurement and Accuracy Procedure Obtain 5 large test tubes (all the same size), a test tube rack, 3 beakers of colored water A-C, and 3 graduated cylinders. With a Sharpie, label the tubes 1-5 Measure 25 mL of solution from beaker A (red) using a clean graduated cylinder. Pour into tube 1. Measure 28 mL of solution from beaker B (yellow) using a clean graduated cylinder. Pour into tube 3. Measure 22 mL of solution from beaker C (blue) using...
Ir. contain howaining 5.0 m2 unlabeled to 5. You have two unlabeled test tubes, one containing...
Ir. contain howaining 5.0 m2 unlabeled to 5. You have two unlabeled test tubes, one containing 5.0 mL of 1.0 M HCl and the other containing 5.0 mL of 1.0 M of H2SO4. If you had only 6.0 mL of 1.0 M NaOH, describe how you could determine, without doubt, which test tube contained which acid? (You may use any equipment normally found in the lab.) withou. So pment
4- Certain solid substances, known as hydrated compounds, have well-defined molecular ratios of water to some other species. For example, calcium sulfate dihydrate (commonly known as gypsum, CaSO4 2H30), has 2 moles of water per mole of calcium sulfate; alternatively, it may be said that I mole of gypsum consists of 1 mole of calcium sulfate and 2 moles of water. The water in such substances is called water of hydration. In order to eliminate the discharge of sulfuric acid...
Question1:
Introduction Three aromatic compounds that have ortho-para directing and activating substituents will be brominated. The extent of activation will be judged by the number of bromine atoms that add to the benzene ring in each case. For each of the compounds shown below you will work out if a mono- di- or tri- brominated derivative formed following treatment with acetic acid and bromine in hydrobromic acid. This will be determined by measuring the melting point and interpreting the H...
You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO3 mixture bet heating; mass with KCIO, mixture and catalyst and mass of all of the above after heating. To weigh the test tube, place it in an empty beaker to keep it upright. You may tare the weight of the bea you need to know the weight of the test tube for your calculations. Procedures: Weigh your clean, dry empty Pyrex test...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone Cyclohexanone Unknown Part D. Iodoform Test. Test Sample Tube 1 2-hydroxybutanal Prediction Observations Results (+ or -) Benzaldehyde Propanone Cyclohexanone Unknown Experiment 12 Identification of Aldehydes and Ketones O the b e t theader of each holding your breath as a st beward your nose. Record the derson the specified memes from O Ta Test g shes between ones that contain a methyl group...
You have accidentally torn the labels off two tubes, each
containing a different plasmid, and now do not know which plasmid
is in which tube. Fortunately, you have restriction maps for both
plasmids, shown in the figure below. You have the opportunity to
test just one sample from one of your tubes. You have equipment for
agarose-gel electrophoresis, a standard set of DNA size markers,
and the necessary restriction enzymes.
A)Why won’t making a single cut (e.g. with HindIII) help...
Ir. contain howaining 5.0 m2 unlabeled to 5. You have two unlabeled test tubes, one containing 5.0 mL of 1.0 M HCl and the other containing 5.0 mL of 1.0 M of H2SO4. If you had only 6.0 mL of 1.0 M NaOH, describe how you could determine, without doubt, which test tube contained which acid? (You may use any equipment normally found in the lab.) withou. So pment
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