mass of KCI

Q: Which of the following was used in excess in the gravimetric method of analysis experiment? A HCI B…

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Q: Find the molality of a solution made by adding 8g of NaOCI to 5000g of water. (MW: Na=23 g/mol, 0-16…

A: 14.  Given ;- mass of NaOCl = 8 g  Mass of water = 5000 g  MW: Na = 23 g/mol, O = 16g/mol, Cl =…

Q: How long will it take to plate out 3.9 g Ni from aqueous Ni2+ with a current of 108.2 A? HOW DO WE…

A: To plate Ni using the process of electrolysis, the reaction that needs to be employed on the…

Q: The potential of a silver electrode correlates reproducibly with the concentration of chloride ions…

A: Electrochemistry is branch of chemistry in which we deal with oxidation and reduction reaction.

Q: 5. If a hydrocarbon compound has a formula mass of 16.04g, what is its empirical formula? О СН2 O…

A: Given :-  Empirical formula  CH2  CH4  C2H2  CH3 Empirical Formula mass = 16.04 g  To identify :-…

Q: Which of the following can increase the observed potential in a galvanic cell?  a. ohmic…

A: Correct option is D.

Q: Atomic Mass

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Q: 3. Most salts contain a metal and a non-metal. Look at the compounds we tested and explain how we…

A: Salts are chemical compounds with the same number of positive and negative charges, a net charge of…

Q: f their boiling points. That is, choose 1 next to the substance with the highest boiling point,…

A: Given that the compounds to arrange according to their boiling point are  Ethene,formaldehyde,H2and…

Q: • The temperature of a 35.2 g sample of iron increases from 23.7 °C to 29.5 °C. If the specific heat…

A: Given:: Mass of Fe, m=35.2 g  Initial, T1=23.7℃ = (23.7 +273) K=296.7℃ Final, T2= 29.5 ℃= (29.5+273)…

Q: When [Cu2+] = 1.37 M, the observed cell potential at 298 K for an electrochemical cell with the…

A: Given-> [Cu2+] = 1.37 M T = 298 K Ecell =2.804 V

Q: Refer to the attached picture for the following questions  Which among the five aromatic molecules…

A: We know that molecular stacking is decreased when there is steric repulsion in structure 3 there is…

Q: Which of the following molecules has an assumed van't Hoff factor equal to 2? A. KPO4 B. M9SO4 C.…

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Q: The gas inside a balloon will always have a pressure nearly equal to atmospheric pressure since that…

A: Given :-  Initial temperature = 19.0 °C  Initial volume = 0.600 L  Final temperature = 77.3 K   To…

Q: Determine the mole fraction of CH3OH in a solution prepared by dissolving 36g of alcohol in 1000g of…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: What kind of intermolecular forces act between a hydrogen peroxide (H,0,) molecule and a water…

A: We have to say the intermolecular force present between a hydrogen peroxide (H2O2) molecule and a…

Q: H R H-C-H H - С -н H-C-H H O ketone O carboxylic acid エーO-エ

A: Which one of the following is correct

Q: 16. The concentration of a 1500mL aqueous KCI solution was increased from 25.0 M to 80.0 M by…

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Q: The US Department of Health recommends adding sodium fluoride to municipal drinking water to reduce…

A: Given : Solubility of NaF = 1.5×10-3 g L-1 Molar mass of NaF = 42 g mol-1  Molarity of NaF = ?

Q: What mass of HCI is needed to make 3000g of 3% solution? (MW: H = 1g/mol, Cl = 35g/mol) A. 0.09 gram…

A: Given:: Make mass of HCl = 3000 g % solution = 3% mass of HCl = ?

Q: For each pair of compounds listed, check the box next to the one with the higher boiling point.…

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Q: 79. Identify the SYSTEMATIC name of the molecule shown in this item. A. 1-iodo-4-ethylaniline B.…

A: Write IUPAC name of the given structure---

Q: Which of the following statements is TRUE regarding the natural steroid, progesterone? H H C-H H-C-H…

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Q: Calculate the root mean square velocity, in m/s, of Cl2 at 273.0 K. Assume ideal gas behavior

A: Molar mass of Cl2 is 70.906 amu

Q: An unknown substance in a container is a single phase and the components were not separated using an…

A: Solution is a homogeneous mixture of two or more than two components, whose composition vary to the…

Q: - Identify the hybridization of the following atoms in this molecule i. The oxygen ii. The nitrogen…

A: 1) the hybridisation of the following atoms in the molecule is: i) The oxygen - sp3

Q: statements is FALSE about alkanes and cycloalkanes?  Choices: All alkanes produce CO2 and water…

A: Correct statements are  All alkanes produce CO2 and water vapour upon complete combustion. Cyclic…

Q: Identify which type of isomer the following structures represent. но HO но, OH Positional isomer…

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Q: What mass of NaCH3COO should be added to 1.00 L of 0.100 M CH3COOH to produce a solution with pH =…

A: Buffer is a solution that resists the change in pH when small amount of acid or base is added to it.…

Q: Refer to the attached picture for the following question What property is expected in the organic…

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Q: C. Structure 3 D. Structure 4 51. Which aromatic structures contains functional groups which are…

A: Electron donating group: Those functional group which have tendency to donate electron pair is…

Q: A patient with emphysema is breathing pure O2 through a face mask. The cylinder of O2 contains…

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Q: My System Suitability Tests can contribute to PQ True False

A: The recorded collection of activities required to verify that an instrument consistently operates…

Q: Under which conditions is a reaction spontaneous at all temperatures, according to ΔCΔΗ - ΤAS ?…

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Q: Consider the structure of cyclohexene, if it undergoes epoxidation followed by exposure to water,…

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Q: You left a glass full of homogenized milk on a table undisturbed for half an hour. What would result…

A: To the eyes, milk may appear homogeneous but it is a heterogeneous mixture. However,  homogenized…

Q: Using the data in the table, calculate the rate constant of Trial [A] (M) [B] (M) Rate (M/s) this…

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Q: Write a chemical equation to show vitamin C is oxidized by iodine.

A: Ascorbic acid is known as vitamin C.

Q: Muriatic acid is between 20-32% hydrochloric acid. A particular batch is determined to have a…

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Q: A sample of oxygen produced in a laboratory experiment had a volume of 493 mL at a pressure of 575…

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Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

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Q: new volume in L?

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Q: Consider the following chemical reaction at equilibrium Co(g)+ H2O (g) co2(g)+H2(g)Of H2 is removed…

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Q: 315 ml of water was added to 2100 ml of 19M MaCl solution. What is the new concentration of the…

A: Given-> Initial volume (V1) = 2100 ml  Initial molarity (M1) = 19 M Volume of added water = 315…

Q: Sc+ S -->   Write the electron configurations using noble gas configurations for  each element and…

A: Electronic configuration   Sc - [Ar] 3d¹ 4s²   Most stable ion of scandium Sc3+ - [Ar] 3d0 4s0…

Q: II. Balance each redox reaction in acid solution using the half reaction method. 5. H2O2 + Cr207 2-…

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Q: 6. Write the full electronic configuration for the following atoms/ions. a. Strontium (Sr) b.…

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Q: What species, in addition to a dead polymer, is produced in a chain-transfer reaction with a…

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Q: ? O3 a. b. Zn, H*

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Q: Determine the value of AG°pxn for the target equation by using the three reactions provided. Target…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.