When is sieving and fractional distillation a good method for separating mixtures? Cite an example.

Q: Briefly describe the purpose and importance of the following procedures in the analytical process:…

A: Sample preparation is the most important step in chemical analysis to start with.

Q: a) What is the mass of the original sample? b) What is the mass of NaCI in the sample? c) What is…

A: Mixture is material made up of two or more substances. separation of mixture is process in which the…

Q: Which scale is most useful for reporting data from the spectrometer? Why?

A: The two scales used for analysis in UV spectroscopy is percent transmittance and absorbance.

Q: What is the role of sodium and chloride ions in this experiment

A: A spectator ion is an ion that exists as a reactant and a product in a chemical equation. and it…

Q: A white powder mixture is placed into water. Some of the powder sinks to the bottom of the…

A: A mixture containing different phases and the composition is not uniformed throughout is termed as…

Q: Why do we need to remove impurities from compounds before we use them?

A: The importance of removing impurities from compounds is given below,

Q: 6. Given your experience in mass determinations (Experiment 1) and with volumetric glassware…

A: There is two common methods mostly used in chemical laboratory are the determination of mass and…

Q: 1.) PBr3 2.) NaCN 3.) MgBr OH 4.) H*, H20 a) b.) d) ZI

A: Detailed mechanism is given below:

Q: List and Define kinds of samples according to size:

A: This is a question from Analytical Chemistry. Sample size means amount of sample taken for analysis.…

Q: In Paper Chromatography, when the solvent wicks up the paper and causes the separation of your…

A:

Q: Sublimation, dissolving, and filtration can only be carried out in:* soluble-substances in solution…

A: Here three process occur  1) Sublimation - This method is used to separate a substance that sublimes…

Q: What is the difference between a fractionation and a distillation?

A: The main difference between fractional distillation and simple distillation is the application in…

Q: hich type of distillation is suitable for "less drastic conditions"?

A: Distillation  It is a separation technique that can be used to either increase the concentration of…

Q: When you do a load of laundry, why do you not justdrop a bar of soap into the washing machine? In…

A: The reason can be given based on chemical kinetics, which deals with rates of chemical reactions and…

Q: what is distillation?

A: Step : 1           What is distillation?

Q: When we need sample preparation for analysis? use your own words to write

A: 1) Preparation is a very important step in most analytical techniques because the techniques are…

Q: Chamestry

A: Dear student we are allowed to address only one question in one go. Please do post the second…

Q: 1. What is a spectrophotometer used for in a cobalt chloride solution analysis?

A:

Q: Describe the fractional distillation curve/graph

A: To describe the fractional distillation curve / graph.

Q: 2. What measurements might you record regarding water samples to assist with the quantification…

A: Q2)  The analysis of water samples are done to know the water quality of the water.

Q: Give 5 examples of any organic compound which changes in the same way as sugar and benzoic acid when…

A: Sugar and Benzoic acid are both organic compound having made of carbon and hydrogen as skeleton .…

Q: Complete this sentence  THe electrical conductivity of a sample will       when the size of the…

A: When a Voltage is applied to the electrode dipped intoan electrolytic solution , ions of the…

Q: Discuss some applications of simple distillation and steam distillation. Explain why you can use…

A: In distillation process liquid is converted into vapour and then condense to liquid form .

Q: A heterogeneous mixture has uniformly distributed particles has not a uniform composition throughout…

A: Heterogenous mixture is the mixture in which the composition is not uniform throughout it means…

Q: magnesium carbonate pentahydrate sodium sulfate decahvdrate

A: To write the formula for the given hydrates

Q: Chemistry What does a melting point range tells us about the purity of a product?

A: Melting point:-The temperature at which the substances chenges from a solid to a liquid form, this…

Q: Was there any physical change in the characteristics of trichloroethane when it was added to water?

A: Trichloroethane is micible in water. When it is added to water there is no any physical change.

Q: Given your experience in mass determinations and with volumetric glassware, which factor used in…

A:

Q: Characteristics of a substance that can be separated from a mixture through steam distillation

A: Steam distillation is a distillation or separation process in which steam is generated by distilling…

Q: IF YOU WANT A PURE SUBSTANCE SEPARATED FROM IMPURITIES, WHICH SETUP WOULD YOU USE Heat IMPURE LIQUID…

A: We have to tell among the given options which one is used to separate a pure substance from a…

Q: Four grams of the crystalline compound “A” dissolve in 100 mL of methanol at room temperature. At…

A: The solubility of compound A in 100 mLof methanol at room temperature is given to be 4 g while the…

Q: Cl, / CCI, (solvent) H,SO, / ethanol

A:

Q: If the tax on alcohol is Php 500 per proof gallon, how much tax must be paid on 5 gallons of alcohol…

A:

Q: WHAT WOULD IN Α ΕXPLAI Ν DISTILLATION IF A STUDENT DID NOT HAVE COLD WATER RUNNING THROUGH THE…

A: Simple distillation is used to separate a mixture of two liquids, whose boiling point difference is…

Q: Calcium ions contribute to the hardness of water.  a) Based on the Ksp experiment, describe a way to…

A: Minerals of ions makes water hardness, Calcium and magnesium ions are the major reason for the…

Q: About Sampling, tick only the incorrect alternative(s): A) Identifying the nature of a substance…

A: B) A type of error that is known due to procedures that cause a measure to be too large or too small…

Q: What type of distillation do we use to separate a mixture of water and acetic acid and why?

A: Distillation is the process by which two liquids are separated from a mixture through evaporation…

Q: Discuss about  method of distillation

A: Distillation is the process by which two or more liquids can be seperated on the basis of the…

Q: distilled water

A: In this question we have to explain the distilled water device and also know about features.

Q: given your experience in mass determinations (Experiment 1) and with volumetric glassware…

A: Density of a substance can be calculated from mass and volume of it.  The more precise measurement…

Q: What is polarity and how is polarity related to how chromatography works?

A: In chemistry, polarity of a molecule is defined as the electric charge distribution over the atoms…

Q: What are advantages and limitations of different types of modelling? (modelling with experiments,…

A: In chemistry there are many ways to check the deviation of experimental data from the accurate…

Q: 1. Which of the following is not a step in preparing a water sample container? a. All sample…

A: Option a is the correct answer. Steps in preparing a water sample container: Decide on the number of…

Q: David decides that it is better to create a blend containing 50% NaCI, 33% KCI and 17% CaCl2, than…

A:

Q: 1. SC.912.P.8.2 - Discuss volume, compressibility, density, conductivity, malleability, reactivity,…

A: When a mixture(or a pure substance) has a single phase in it, it is called homogenous system. When…

Q: Mixtures and Pure Substances Lab Data Sheet Discussion Questions: In the space provided for each…

A: Given : mixture and pure substances Lab report.  To find : Complete sentence of response. Note :…

Q: Menthol is a common ingredient of nasal inhalers and has similar properties as naphthalene. What…

A: Given : Menthol is a common ingredient of nasal inhalers and has similar properties as naphthalene.…

Q: when drawing melting point composition diagram for a mixture of something such as cinnamic acid and…

A: The melting point composition diagram for mixture cinnamic acid and urea depicts the comparison…