Homework Answers
To identify whether both compounds are identical or not, we use mixed melting point.
In mixed melting point, both compounds are mixed together and melting point of mixture was determined. If the melting point of the mixture remain same as that of pure compounds then both compounds are identical. If melting point of mixture is different from that of pure compounds then they are different compounds because presence of impurities or any other substance reduces the melting point of compound.
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#2) You are given two similar looking white, organic crystalline solids and determine their melting points....
Both KCl and BaCO3 are white solids. If you were given a sample of either solid,...
Both KCl and BaCO3 are white solids. If you were given a sample of either solid, describe how you would determine which one it is.
You are a researcher for a golf club manufacturer. You are given two identical looking cubes...
You are a researcher for a golf club manufacturer. You are given two identical looking cubes of a metal alloy. You are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. It is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. Which of the following is the best way to determine which is which? a. Determine the density...
Organic chemistry d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs...
Organic chemistry
d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs 3.3 grams, what is the percent yield caffeine in the tea. 7. If the density of a certain liquid material is 1.27 gyml, caleulate the volume of the material that would be equivalent to 10 grams of the materials. The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with a 10...
I just need help with the assessment section Lab Section Name Write-Up Sheet for Multi-step Synthesis...
I just need help with the assessment section
Lab Section Name Write-Up Sheet for Multi-step Synthesis Experiment (Day 2) Give the reaction scheme (starting material(s), reagents, ex heme (starting material(s), reagents, expected product) for the second step of your multi- step synthesis. Solvents and catalysts should be included though work up steps need not be shown. O Tethanolo 2-(Phenylamino) phano DATA & ANALYSIS N - Playl-2-hylony beneylumine Amounts of Starting Materials and Reagents Used List all starting materials and reagents...
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3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
1. (2 points) If you were given a microscope slide with an unknown type of muscle...
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You are given a mixed culture of two organisms in a small tube of TSB.
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Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
Organic chemistry
d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs 3.3 grams, what is the percent yield caffeine in the tea. 7. If the density of a certain liquid material is 1.27 gyml, caleulate the volume of the material that would be equivalent to 10 grams of the materials. The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with a 10...
I just need help with the assessment section
Lab Section Name Write-Up Sheet for Multi-step Synthesis Experiment (Day 2) Give the reaction scheme (starting material(s), reagents, ex heme (starting material(s), reagents, expected product) for the second step of your multi- step synthesis. Solvents and catalysts should be included though work up steps need not be shown. O Tethanolo 2-(Phenylamino) phano DATA & ANALYSIS N - Playl-2-hylony beneylumine Amounts of Starting Materials and Reagents Used List all starting materials and reagents...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
(2.4pts) Discussion- Question 2 Suppose you want to test for the presence of lead coming from two different sinks in your home. Consider the techniques used in this and previous experiments to answer the following questions.. (0.6pts) a. How could you determine whether lead, specifically, was or was not present in each sink? X X Normal B IU EE (1pts) b. Assuming both sinks tested positive for the presence of lead, how could you determine which sink has a higher...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
1. (2 points) If you were given a microscope slide with an unknown type of muscle tissue, what features would you look for to determine whether the tissue was smooth muscle or skeletal muscle? Give 2 characteristics that would allow you to distinguish between these tissue types. Be sure to state which type of muscle has the characteristics you describe.) 2. Give 3 examples of different types of connective tissues found within the body and briefly note one function of...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
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