Why is it a good idea to perform three trials at each concentration? How would you modify the experiment to produce more reliable results?

Q: What would likely happen if a hot saturated solution were filtered by vacuum filtration using a…

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Q: You've probably noticed by now that the amount of acetic acid consumed wasn't the same in each…

A: Vinegar reacts with NaHCO3 to form sodium acetate carbon dioxide and water. From the observations of…

Q: In a fractional distillation experiment it is important to wrap insulting tape and Al foil around…

A: Wrap the distillation column with an insulated like Aluminium foil insulation bill aloud the vapour…

Q: Anna has a solid sample and did use an aqueous solvent to dissolve it. She observed that some of her…

A: It is very crucial to take a suitable solvent for dissolution while performing any analytical…

Q: What volume of ethanol is required, per gram of benzil, to generate a solution with a concentration…

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Q: 1. You will be separating a binary mixture in this experiment. What are the two compounds in the…

A: Since you have asked a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What would be the effect of collecting larger fractions when carrying out an experiment?

A: Column chromatography : it is an analytical method for separating a mixture of liquid-liquid ,…

Q: Part A:  Calculate the theoretical yield for this experiment (show work clearly) Part B: Explain…

A: Given data: Mass of p-acetamidophenol = 1.063 g Volume of bromoethane used = 0.80 mL   Data needed:…

Q: Explain why there was no solid material remaining after heating the ammonium carbonate in this…

A: We are heating ammonium carbonate in this experiment.  The chemical formula of ammonium carbonate is…

Q: At the end of the experiment how will you determine which tablet is more effective than the other

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Q: 4. The reflux set-up in the experiment allows prolonged heating of the liquid reactants for them to…

A: In organic chemistry experiment, reflux technique is used used to obtain the product in chemical…

Q: 9) If you inject your sample into the GC and wait several minutes but there is no peak (at all, not…

A: The technique through which the components of a mixture are separated using different affinities of…

Q: What characteristics does a mixture need to have so that it could be separated by: A) Distillation,…

A: The separation of mixure on the basis of their physical and chemical properties.

Q: What is the purpose of NaCl in the experiment? Will the same result be obtained if thereacting…

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Q: Explain why the reagents are added in the specific sequence described in the experiment.

A: To explain why reagents are added in the specific sequence in an experiment.

Q: Reaction with NaOH Table 9.10 Observations on the reaction of test samples with NaOH. Sample…

A: 1.Acetamide reacts with NaOH-observation-pungent odour comes and solution left with sodium acetate.…

Q: directly analyse a solid sample with AAS, which method will you prefer? Explain this.

A: Follow the explanation for to understand and chose the method for solid sample analysis.

Q: In a grignard reaction, one way to upgrade the experiment is to add a desiccant between two the…

A: The Grignard reagent is very sensitive towards air and water. Thus the apparatus should be…

Q: Post-Lab Questions: 1. What restrictions are there on what volatile liquids could be used in this…

A: There are certain restrictions to use a volatile liquid in this experiment. 1. Volatile liquid must…

Q: EXPERIMENT : Estimation of Free Chlorine I want full Theoretical Background for this experiment

A: The atomic number of chlorine is 17. Chlorine is used as disinfectant for cleaning tap water.…

Q: A student doing this experiment had some problems with the procedure, as described below. Explain…

A: On reaction of magnesium and hydrochloric acid, magnesium chloride and hydrogen gas is produced. The…

Q: Why is it not necessary to test the supernatant from both trial samples for the excess reactant is…

A: In step 9, BaCl2 is added to test tube 1, and Na3PO4 is added to test tube 2. Precipitation occurs…

Q: Can you please answer and clearly show your work for all the parts to this question.   Draw the…

A: Those organic compounds which have a carbonyl carbon connected at the end of carbon chain and…

Q: What is a reagent blank? Why should we include this in making our calibration curve?

A: A reagent blank refers to a small positive error in test results that comes from the reagents…

Q: Why should you know the composition of the weighing form? a. So that it can be washed properly b.…

A: Composition of the compound tells about the mass .

Q: Explain the purpose of the desiccator. How would your results differ if you didn’t use it?

A: Qualitative analysis is a branch of chemistry that deals with the identification of elements present…

Q: If you inject your sample into the Gas Chromatography and wait several minutes but there is no peak…

A: Hello. Since multiple questions have been posted, the first question shall only be answered in this…

Q: A sample was placed on a chromatography column. Methylene chloride was used as the eluting solvent.…

A: Chromatography is a laboratory method for the isolation of mixtures. The substance is immersed in a…

Q: Calculate the Initial Concentration, in units of Molarity, for each reagent used in each of the…

A: Molarity of the prepared solutions for the purpose of experiment or the initial concentration of…

Q: At what stage was the internal standard added to the prepartions, in the protocol of this…

A: Step : 1             The required answer for the above question is follows as :

Q: that was 93% alcohol and 5% water was used instead of pure alcohol, how would the results be…

A: These  resulting Mixture will be  An Azeotropic Mixture .

Q: How would the following procedural error affect the experimental results? Briefly explain. When the…

A: When the final mass was determined, there was water on the foil and outside of the flask the way in…

Q: Why should the syringe be removed from the sensor when setting the initial volume for each trial?

A: Option C

Q: What error is introduced into the determination of an Rf value if the top is left off the developing…

A: In chromatographic technique, the components of a mixture are separated by using a developing…

Q: 2-naphthol IR Tables that contains the important peaks for the experimental

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Q: Concentrated sulphuric acid is used in this experiment to O help the crystal growth of…

A: Here we have to choose correct option about why concentrated H2SO4 used in above experiment and in…

Q: What are possible sources of loss in an extraction experiment?

A: Extraction is a kind of fundamental technique which is used to isolate one compound from a given…

Q: For this experiment, yield was not important, but in onsite lab, as well as large-scale processes, a…

A: The solution is given below -

Q: What do the melting points of the 6 samples tell you about their relative purities?

A: Melting point is the temperature at which equilibrium exist between solid and liquid phases. The…

Q: What procedures should be done to guarantee that the calibration curve is accurate?

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Q: 1. Deduce a suitable title and aim for this experiment 2. Mention three errors that can be done…

A: Explanation of above questions is given below.

Q: Now that you know the moles of NaOH used for each trial as well as the volume of NaOH used for each…

A: Chemical equation for the reaction of NaOH with KHP is: NaOH+KHP→NaKP+H2O 1 mole of NaOH is required…

Q: Sodium hydroxide and Hydrochloric acid mixture If concentrated nitric acid were used in…

A: Hydrochloric acid : HCl  Nitric acid : HNO3

Q: How is the volume of analyte measured and transferred into the conical (Erlenmeyer) flask?

A: Conical or Erlenmeyer flask are containers that are made of glass and have a shape that resembles a…

Q: why is it important to apply the percent volume and percent retrieval in separation of mixtures…

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Q: STARTING WITH 18MG OF 2-methyl-2-butanol JUST B PLEASE  (b) theoretical volume of alkene mixture…

A: Given that -  Mass of reactant 2-methyl-2-butanol = 18 mg = 0.018 g    Now, 0.018 g reactant gives -…

Q: propose experimental design on the separation of components of the mixture of benzoic acid and…

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Q: 1. Why is a calibration curve necessary for this analytical technique? 4

A: Answer

Q: which procedure will produce 200ml of a solution that is 2.5%by volume alcohol of water?

A: The percentage by volume of the solution is 2.5 %. The V/V % can be calculated by the following…

Q: 1.What is the advantage of using 12 in this experiment? 2. Why is the concentration of lodine much…

A: The iodination of acetone can be represented as: