A sample was prepared by diluting 1 mL of a sample to 5 mL.  The resulting solution has an absorbance of 0.463.  Based on the Beer's Law plot prepared for the compound, y = 1.8711x, what is the concentration of the original solution?

Q: Seawater consists of many important elements in the form of salts dissolved in the water. At 25°C…

A: #Q.1: Mass of seawater, m = 1000.0 g * 1 Kg1000 g = 1.000 Kg density of seawater, d = 1.024 kg/L

Q: Explain in detail how you could separate a mixture containing Al203, KCI, and NH4I using various…

A: To segregate these components from the mixture, various physical methods can be used. 1. Solubility…

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 sample may contain either, both or neither of the following ions: CO32- or SO42-. Prepare a…

A: Qualitative anion analysis refers to qualitative tests that are carried out to identify anions…

Q: 3. A student obtained the following data for a sample. The sample dissolved in water The sample…

A: A bond is defined as the attractive forces which holds two or more atoms together in stable molecule…

Q: detecting halogens

A: Halogens can be detected in organic samples by carious method, flame test, Beilstein test etc.

Q: Determine the thickness in atoms of the following AI foil paper with the following information:…

A: Given: Volume: 0.301 cm3 Length: 13.3 mm = 1.33 cm Width: 10.5 mm  = 1.05 cm density : 2.70 g/cm3…

Q: What are the unique properties of nanoscale (1 nm ∙ 10∙9 m) materials?

A: Nanomaterials are the materials that have at least one dimension between 1 nm and 100 nm are called…

Q: Describe the process of Distillation?

A: Distillation is a type of separating technique. Many separation techniques are utilized to…

Q: 9.2. An amino acid contains a group, a hydrogen atom group, an and another atom or molecule which…

A: 9.2. An amino acid contains a carboxylic acid group, an amino group, a hydrogen atom group, and…

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: Mention the constituent of paint and explain the function of the various constituent

A: Constituent of Paints Are as follows:- 1- Pigment 2-Solvent 3-Binder Solids 4-Binder Solvent…

Q: The chemical analysis of a macromolecule has been provided. What is this macromolecule? Element…

A: The empirical formula of any compound can be determined by using the percentage mass composition of…

Q: The representations 14N or 15N give more information than simply the chemical symbol N. Explain?

A: Interpretation-  Explain why the representation 14N or 15N give more information than simply the…

Q: 84. The Handbook of Chemistry and Physics is a reference work that contains a wealth of infor-…

A: The formula, crystalline form or color , density, melting point and boiling point of the given…

Q: How many grams of aspirin should be used to prepare 1.255 kg of the powder? Aspirin 6 parts…

A: Given;

Q: calculate the mass of the distillate_______________ and the density of the distillate.  use the…

A: Given,      Mass of the Empty graduate Cylinder = 5.280 grams      Mass of the Cylinder with…

Q: Which of the following is the correct order for the process of distillation

A: So we will choose the correct order for the process of distillation.

Q: Complete the Calculations to find the weight NV= wt %3D 60 lo00 0,945 = 60 %3D loou

A: We can solve the calculation by cross multiplication. We know that, normality is the gram equivalent…

Q: A trace evidence analyst places crystals of an unidentified white powder onto the stage of a…

A: All materials can be divided into two categories, isotropic and anisotropic. Isotropic materials…

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: In a TLC experiment, three spots were made. In spot A was a crude sample of a mixture of three…

A:

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: You begin preparation of the calibration curve to measure absorbance vs concentration of FeSCN2+. To…

A: Molarity is the way of expressing concentrations which is defined as moles of solute dissolved per…

Q: What is the mass percentage of C in caffeine, C₈H₁₀N₄O₂? Provide an answer to two decimal places.

A: Mass percentage of an element in a molecule is calculated by using the formula Mass % of element = n…

Q: An electrical insulator is a material

A: An insulator can be considered as a pure chemical element.

Q: 25. XF2 is the chemical formula of a salt. The X-ion in this salt has 26 electrons. The metal X is…

A:

Q: Classify V ubstance shown in the sketch below. You can click the other tabs in the sketch to get a…

A: It is not a solution, and solutions are a homogenous mixture It is not a pure substance, as the pure…

Q: A chemist needs to create a series of standard Cu²+ (aq) solutions for an absorbance experiment. For…

A: Molarity of the Cu+2 stock solution= 2.07 M  Dilution formula is M₁V₁ = M₂V₂ where M₁ and V₁…

Q: A substance with a molar mass of about 120 and containing only carbon and hydrogen; δ= 1,2 one in…

A: Introduction: Spectroscopic methods are useful for the structure determination of a compound.IR…

Q: TIO2 nanoparticles are sensitized with light absorbing dyes. Under illumination an electron is…

A:

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A: Molar mass of heme (C₃₄H₃₂FeN₄O₄)  =  616.49 g/mol Molar mass of Fe = 55.85 g/mol Each mole of heme…

Q: suggested material of known volume 1. 450 gram of flour added with 1 L of water. 2. 500 ml alcohol…

A: we know that  1 gass  can be measured 500 ml 150 g can be measured by1cup 180 ml can be measured by1…

Q: A hydrate of nickel(II) chloride, NiCl2 • XH2O, decomposes to produce 21.8% water. Calculate the…

A: When a bigger compound breaks itself into two or more simpler molecules, is called a decomposition…

Q: A pure dilute solution of sodium in liquid ammonia exibits electrical conductivity . Why?

A: Electrical conductivity is due to the motion of electron. Ionic substances dissolve in water and…

Q: Q2: Do the data support the idea that running the tap water before taking a sample made the lead…

A: From the data given we can see that the concentration of lead in the sample taken in the 1st draw is…

Q: Marie Curie was a Polish scientist that specialized in chemistry and physics. She wanted to…

A: Marie Curie  Marie Curie is renowned for discovering radium and polonium, as well as for making a…

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: What is Horney's theory in modern society

A: Horney's theory in modern society - Basic anxiety is a term used by psychoanalytic theorist karen…

Q: The EPA has set a limit for uranium in drinking water at 30 micrograms per Liter. This corresponds…

A: The density of water is 1 g/ml. The volume of 1 gram of water is 1 milliliter. The volume of 2500…

Q: Which of the following are the two essential processes for the distillation to occur? I.…

A: Distillation: 1) Distillation can be defined as the process of separating the mixture of liquids…

Q: A concentrated solution of compound A in the same solvent was diluted from an initial volume of 2.00…

A: According to Beer's law : the concentration of a chemical solution is directly proportional to its…

Q: 1- lopper and nitric acis Porassium ioaize

A: "Since you have asked multiple questions, we will solve the first question for you ( as per our…

Q: Consider the following reaction where an excess of water was used. AICI3(s) + 3H2O(1) - Al(OH)3(?) +…

A: Answer:- This question is answered by using the simple concept of chemical reaction of aluminium…

Q: A mixture of 0.560 g BaCl, 2H2O (molar mass = 244.2g/mol) and 1.44 g of NazPO4 12H20 (molar mass =…

A: 2Na3PO4 + 3BaCl2-----> Ba3(PO4)2 (s) + 6NaCl Mass of BaCl2.2H2O = 0.560 g Molar mass of…

Q: Why does table salt, NaCl, some times appear yellow in colour?

A: All matter can exist in different physical states; solid, liquid and gases. Solid is well known…

Q: ii. Considering the structure of nanoparticles, explain what the Wigner-Seitz diameter, dws, is and…

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.