Homework Answers
answer
The sample components eluted from an injection before the current run are one source of these peaks,
Late elution is characterized by the presence of unexpected peaks in a blank or non-injection run
so that you cannot identify the compound untill the proper caliberation verification and concentration meet.
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If we had a peak in our unknown that did not match one of our known...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
Hello, we were provided two unknown samples and asked to determine if our samples were alcohols...
Hello, we were provided two unknown samples and asked to
determine if our samples were alcohols or not, using the
2,4-di-nitrophenyl hydrazine test. Then we tested our positive
sample with Fehlings test to determine that we had a Ketone and
other sample using Lucas Reagent to determine that we had a
secondary alcohol. We were given these graphs for our unknown
samples to determine the connectivity/molecular struture. Please
kindly assist or let me know what other information would help with...
During our assessment, we identified Hilda was at risk for malnutrition. However, we did not have...
During our assessment, we identified Hilda was at risk for malnutrition. However, we did not have any information in the case study about subcutaneous fat or muscle loss. Explain how you would assess subcutaneous fat and muscle loss in Hilda. Knowing Hilda is at risk for malnutrition, once an oral diet is resumed, what intervention steps would the doctor, nurse, and dietitian put into practice to help Hilda reach a goal of consuming >75% of meals? Please identify one intervention...
A student attempted to identify an unknown compound by the method used in this experiment. Her or...
A student attempted to identify an unknown compound by the method used in this experiment. Her original sample weight was 0.7047 g. When heated in the first step, the mass decreased to 0.4862 g Write the complete, net balanced reaction that would occur in this experiment if - the student's unknown compound was NaHCO3 -the student's unknown compound was KHCO3 Using stoichiometry, predict the theoretical yield of the solid chloride obtained at the end of the student's experiment if -...
A known mixture of Compound X (1.52 mg/mL) and Compound Y (1.73 mg/mL) gave peak areas of 16.02 and 9.41 cm², respectiv...
A known mixture of Compound X (1.52 mg/mL) and Compound Y (1.73 mg/mL) gave peak areas of 16.02 and 9.41 cm², respectively, after separation by isocratic HPLC. A solution was prepared by mixing 8.76 mg of Compound Y with 5.00 mL of unknown containing just Compound X, and diluting to 10.00 mL. Peak areas of 5.96 cm- (Compound X) and 4.86 cm (Compound Y) were measured. Find the concentration of Compound X in the unknown.
Recrystallization of Acetanilide was conducted using water as our solvent. First we had to choose a...
Recrystallization of Acetanilide was conducted using water as our solvent. First we had to choose a solvent based (water was chosen as our solvent due to it not dissolving acetanilide at room temp but dissolved it when heated) Then we performed recrystallizaation, vacuum filtration and then melting point measurements. For the post lab discussion for recrystallization of acetanilide report we have to address several different arguments. The ones below I'm not sure what to focus on to completely defend what...
At one point or another we have all bumped our heads, stubbed our toes or had...
At one point or another we have all bumped our heads, stubbed our toes or had a mosquito bite. We all know the result which is swelling or inflammation. Using the medical terminology that you have learned this week discussed the following questions. What causes the accumulation of fluids in tissues and how does this fluid become lymph? 250 words
4) An unknown compound, "X", is known to be either Srch or SrBrz. A 12.0 g...
4) An unknown compound, "X", is known to be either Srch or SrBrz. A 12.0 g sample of this compound yields 4.25 g of strontium. Identify the sample. Show the work.
Which peaks in your IR spectrum match the known structure of caffeine? for each diagnostic peak,...
Which peaks in your IR spectrum match the known structure of
caffeine? for each diagnostic peak, you should identify its
frequency in wavenumbers and the probable vibration (e.q 2950 cm,
alkane C-H stretch). You should then write a short discussion that
matches the diagnostic peaks to a functional group in caffeine
structure
Label all the function groups
P lanta лече Јr- 1 0.95 UCSB ^3i16.01 rasang 0.90 0.85 * - ๒ ๆ ในWS หาน AA 1) hMtAM Y Units 4...
1. An unknown compound was known to be toluene, cyclohexane or cyclohexene. It burned with a...
1. An unknown compound was known to be toluene, cyclohexane or cyclohexene. It burned with a very sooty flame and when bromine in dichloromethane was added to the sample, the brown color remained. What was the unknown? Explain why you made the choice you did. 2.Paul has test results of a sooty flame when burned and a positive reaction to sulfuric acid. He states that his unknown is cyclohexane. What was wrong about his conclusion?
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
Hello, we were provided two unknown samples and asked to
determine if our samples were alcohols or not, using the
2,4-di-nitrophenyl hydrazine test. Then we tested our positive
sample with Fehlings test to determine that we had a Ketone and
other sample using Lucas Reagent to determine that we had a
secondary alcohol. We were given these graphs for our unknown
samples to determine the connectivity/molecular struture. Please
kindly assist or let me know what other information would help with...
A student attempted to identify an unknown compound by the method used in this experiment. Her original sample weight was 0.7047 g. When heated in the first step, the mass decreased to 0.4862 g Write the complete, net balanced reaction that would occur in this experiment if - the student's unknown compound was NaHCO3 -the student's unknown compound was KHCO3 Using stoichiometry, predict the theoretical yield of the solid chloride obtained at the end of the student's experiment if -...
A known mixture of Compound X (1.52 mg/mL) and Compound Y (1.73 mg/mL) gave peak areas of 16.02 and 9.41 cm², respectively, after separation by isocratic HPLC. A solution was prepared by mixing 8.76 mg of Compound Y with 5.00 mL of unknown containing just Compound X, and diluting to 10.00 mL. Peak areas of 5.96 cm- (Compound X) and 4.86 cm (Compound Y) were measured. Find the concentration of Compound X in the unknown.
4) An unknown compound, "X", is known to be either Srch or SrBrz. A 12.0 g sample of this compound yields 4.25 g of strontium. Identify the sample. Show the work.
Which peaks in your IR spectrum match the known structure of
caffeine? for each diagnostic peak, you should identify its
frequency in wavenumbers and the probable vibration (e.q 2950 cm,
alkane C-H stretch). You should then write a short discussion that
matches the diagnostic peaks to a functional group in caffeine
structure
Label all the function groups
P lanta лече Јr- 1 0.95 UCSB ^3i16.01 rasang 0.90 0.85 * - ๒ ๆ ในWS หาน AA 1) hMtAM Y Units 4...
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