how many atoms are in kmno4

Solution for 3. What is the difference between HSI and Hscei? If a question is ticked that does not mean you cannot continue it. Calculate the number of moles in 674.65 g of C7HsN3O6. The reaction only works if there is at least one hydrogen attached to the carbon. We write the oxidation number (O.N.) ok, I will take your word for it Nauseated. Calculate the molar mass of potassium permanganate (KMnO4). ANSWER:- we know that atomic mass of Si atom is 28.08 from periodic table and one mole of Si atom is 6.023 * 10 23 (Avagadro's number) atoms of Si that is,. The small number after the element symbol is called the subscript and this tells. Posted one year ago. You have to check this for accuracy!!!. The crystal structure of solid KMnO4 is orthorhombic. Nauseated, since you are such a 'genius' [interprete as 'know-it-all' ] why don't you just answer the question!! number of moles by the molar mass of glucose (180 g/mol): 0 mol x 180. HOW TO COUNT ATOMS Background+Information:+ subscripts!-!the!little!numbers!thattell!how!many!atoms!there!are!! Explanation: And moles of potassium permanganate = 23.7g158.03gmol1 16mol . Alkanes are called saturated hydrocarbons because each carbon is bonded with as many hydrogen atoms as possible. The equation is unbalanced (1 Al on left, 2 Al on right, etc). Mn (Manganese) 1 54.938045 = 54.938045. of the solution (in liters) by the concentration of the solution: 0 L x 0 mol/L = Potassium Permanganate | KMnO4 | CID 516875 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities . Answered: 3. Calculate the number of moles in | bartleby n-factor is defined as the number of H + ions replaced by 1 mole of acid in a reaction. Convert grams KMnO4 to moles or moles KMnO4 to grams, Molecular weight calculation: Potassium permanganate, KMnO4, is a powerful oxidizing agent, and has many uses in organic chemistry. 34 mol of Nacl = (2. We are NOT chemists, but Math nuts!!!!. Although overoxidation is less of a problem with secondary alcohols, KMnO4 is still not considered generally well-suited for conversions of alcohols to aldehydes or ketones. Solution: 91024 hydrogen atoms . How do you calculate potassium permanganate? Treatment of an alkylbenzene with potassium permanganate results in oxidation to give the benzoic acid. As a result, the total oxidation number of all atoms in KMnO4 equals zero. For example, in H2O we have only one Oxygen atom since there isnt a number after the O.If there is a number in front of the compound (its called a coefficient), like 2H2O that means we have two separate molecules. The cleavage of alkenes to ketones/carboxylic acids can be used to determine the position of double bonds in organic molecules.5. Size and Color. Oxidation of Organic Molecules by KMnO4 is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. for elements that we know and use these to figure out oxidation number for Mn. Calculate the molarity of H2C2O4 and KMnO4. Find the m - ITProSpt monohydroxy phenols do not yield stable products but dihydroxyl phenols can be oxidized to quinones How to perform the test: Three drops of the compound to be tested are dissolved in 2 ml of water or aqueous ethanol. The chemical KMnO4 is a neutral one. Exercise's 1 No of moles of sodium atoms = 2x6- 75 = 13.5 No of modes of sulphur atoms = 1X6. Calculate the molar mass of potassium permanganate (KMn O4). Using the principles above, we expect KMno4 to react with alkenes, alkynes, alcohols, aldehydes and aromatic side chains. The transition occurs when the chemical is in the presence of light. Notes: Note that in example 2 the extra carbons are cleaved to give the same product as in example 1. set-up. The answer is 158.033949. First, since the KMnO4 doesnt have an overall charge (like NO3- or H3O+) we could say that the total of the oxidation numbers for KMnO4 will be zero since it is a neutral compound. How many molecules are in 74 grams of KI? Moles and the Conservation of Atoms: According to Dalton's atomic theory, each molecule is formed using a fixed proportion of certain. The word potassium stems from the English pot ash, which was used to isolate potassium salts. What is the Oxidation Number of Manganese (Mn) in Potassium ChemTeam: Mole When added, the atoms in KMnO4 yield an overall neutral charge, as specified by the formula. What is the number of atoms in a 3.40 g of potassium? How many grams are in a molecule of KMnO4? A) 19.0 B) 2.64 98.37. Standard solutions of. x mL Answer . Consider this question: What is the molarity of KMnO4 in a solution of 0.0908g of KMnO4 in 0.500L of solution? 3 Add up all and assign unit as grams/mole. Both the same number on the periodic table, you just need to change the units (g/mol -vs- amu) Given 12 g of aluminum, how many moles do you have? moles of KMnO4: n = M * V / 1000 0.000256 0.000259 0.000254 From stoichiometric equation, 1 mol. The molar mass of the middle element, (b), is 25 grams per dozen (g/doz). Molecular mass of KMnO4 = 39.1 + 54.9 + 4(16.0) = 158.0 It's a word that represents an amount or a number, Which contains more atoms, a mole of copper or a mole of gold? There are 6.022 1023 atoms of potassium in every mole of potassium. c-What is the mass of 1.40x1020 atoms of calcium? 9.23 x 1023 Au atoms = moles Au 125 g H3PO4 = molecules H3PO4 E. 0.75 moles CO2 = total atoms E. 0.75 moles CO2 = I total atoms This problem has been solved! K2MnO4, Guest Jan 14, 2016 5 Answers #1 +5 Best Answer Answer: The molar mass of KMnO4 is calculated by adding the atomic masses There is no other chemical reaction of KMnO4 volume of the solution (in liters) by the concentration of the solution (20% or 0) What is the role of KMnO4 in oxidation reaction? - Sage-Answers d-Calculate the mass in grams of one calcium atom. 55 grams of potassium equal to 1 mole of potassium, therefore, 1gram of potassium equals 155mole of potassium. = 2.55 x 158.0 = 403g, Equivalent weight of KMnO4 is equal with molar weight of KMnO4. It is, however, capable of further oxidizing the glycol with cleavage of the carbon-carbon bond, so careful control of the reaction conditions is necessary. The potassium ion in KMnO4 has a permanent oxidation state of 1+, and the oxygen atoms each have a permanent oxidation state of 2-. How many atoms of oxygen are there in 8.43 g of KMnO 4 4? Basketball requires quick starts and stops and quick changes in direction. Correct option is E) Following atoms are present in the given formula: Ca = 3 atoms. 2!is!the!subscript . Potassium, K, has the relative atomic mass 39.0983, therefore its molar mass is 39.0983 g/mol. Both the same number on the periodic table, you just need to change the units. (w/v) solution. The reason is that the molar mass of the substance affects the conversion. The molar mass of an element is the mass in grams of one mole of the element, which is its relative atomic mass (atomic weight) on the periodic table in g/mol. Express your answer using four significant A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to How many moles are equal to 3.67 x 10^23 formula units of potassium KMnO 4 is able to oxidize carbon atoms if they contain sufficiently weak bonds, including Carbon atoms with bonds, as in alkenes and alkynes Carbon atoms with weak C-H bonds, such as C-H bonds in the alpha-positions of substituted aromatic rings C-H bonds in carbon atoms containing C-O bonds, including alcohols and aldehydes The deep purple color of potassium permanganate is caused by the movement of an electron to a vacant d-orbital in the manganese atom. In dilute alkaline solution kmno4 changes to? O = (4 2) 8 atoms. His interest and area of focus in his writing is science, particularly chemistry, biology and physics. Six. C-H bonds in the alpha-positions of substituted aromatic rings. (The atoms of these fictitious elements are much larger than ordinary atoms.) . You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The compound potassium permanganate has chemical formula Our goal is to make science relevant and fun for everyone. = 0.102000 moles of manganese atoms O (Oxygen) Therefore, 40g of KMnO4 contains 5515840, which is equal to 14 grams of potassium. Answered: Atoms of which of the following | bartleby NaOH solution. Can alkanes be oxidised by KMnO4? How many atoms are in KMnO4? - Answers KMnO4 (Potassium Permanganate) - Uses, Structure, Preparation - BYJUS (write down how much each one weighs), = Mass of 1 mol (6.02 x 10 23) of a substance (g/mol). Are you related to Sorasyn? So, n-factor= 3. This site explains how to find molar mass. Molar mass of KMnO4 = 158.034 g/mol In the molecule of KMnO4 there are 4 atom O 1 mole of KMnO4 ~ 4 mol of O Mol of O = (4 x 16 g/mol)/158.034 g/mol = 0.405 mol of O ~ x 0.405 mol of KMnO4 = 0.1 mol of KMnO4. Information About Potassium Permanganate and its Formula. How many moles are in 6.02 x 1023 atoms of carbon? 16.1201 grams KMnO4 (1 mole KMnO4/158.04 grams)(1 mole Mn/1 mole It is still sometimes used for this purpose, along with other chemicals, especially when preparing black-and-white photographs. Cross), The Methodology of the Social Sciences (Max Weber), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Psychology (David G. Myers; C. Nathan DeWall), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Give Me Liberty! with water. Perhaps this wouldpresent a problem for you? Does ozone oxidise kmno4? - sdnimik.bluejeanblues.net Since the reaction between NaOH and HNO3 is 1:1, the To complete this calculation, you have to know what substance you are trying to convert. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Potassium permanganate can help to treat both bacterial and fungal skin infections such as athletes foot and impetigo. Oxidation number of K +4 4 (oxidation number of oxygen) + oxidation . Chemistry - Moles Flashcards | Quizlet Another reaction that alkenes undergo is oxidation. Youre not deadly enough to be him, but you have a comparable lack of chemistry skills. The oxidation state of manganese in this salt is +7. This figure is obtained by adding the individual molar masses of four oxygen atoms, one manganese atom and one potassium atom, all available on the Periodic Table of the Elements (see the "Additional Resources" section). a) Describe how a basketball game will be affected by the decreased friction on the Moon. Exhaustive oxidation of organic molecules by KMnO4 will proceed until the formation of carboxylic acids. The formula indicates that there is 1 mole K, 1 mole Mn, and 4 moles O per mole of KMnO4. In neutral medium KMnO4 forms MnO2 (+7 to +4) i.e. The SI base unit for amount of substance is the mole. What is the role of KMnO4 in oxidation reaction? It does not store any personal data. Answered: (a) Calculate the molarity of a | bartleby Browse the list of Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. Calculate the volume of 0 M HNO3 solution required to neutralize 25 mL of 0 M Indications of a positive test: Answered: How many grams of K2SO4 are there in | bartleby Therefore, alcohols will be oxidized to carbonyls (aldehydes and ketones), and aldehydes (and some ketones, as in (3) above) will be oxidized to carboxylic acids. Athletes foot and impetigo. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. 0 mol/L = 0 mol. How many grams of glucose (C6H12O6) are present in 500 mL of a 0 M glucose Under harsher conditions, the dione is cleaved to form two carboxylic acids. Chemistry The Mole Concept The Mole 1 Answer anor277 Nov 15, 2016 Number of moles = Mass Molar mass Explanation: And moles of potassium permanganate = 23.7 g 158.03 g mol1 1 6 mol. Based on the size of the atoms, do you expect the atomic masses of elements (a) and (c) to be greater than or less than (b)? Given 14.05 g of SO 2, how many molecules is this? What does Shakespeare mean when he says Coral is far more red than her lips red? Aluminum sulfate has a molecular weight of 342.15 grams per mole. Potassium permanganate was discovered in 1659. 5 More answers below Trevor Hodgson Oxidative cleavage of the diol can be carried out more mildly by using IO4 as the oxidant. Potassium permanganate oxidizes aldehydes to carboxylic acids, such as the conversion of n-heptanal to heptanoic acid: 5 C6H13CHO + 2 KMnO4 + 3 H2SO4 5 C6H13COOH + 3 H2O + K2SO4 + 2 MnSO. 1024 E) 184. number of moles of HNO3 required to neutralize the NaOH is also 0 mol. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. When a purple solution of the oxidizing agent KMnO4 is added to an . 5. x mol Answer to correct significant figures x mol (c) How many milliliters of 10.6 M HCI solution are needed to obtain 0.205 mol of HCI? Use this page to learn how to convert between moles Potassium Permanganate and gram. NaCl , we have 3.0 moles of Na+. Potassium permanganate has the chemical formula KMnO4, where the "4" is a subscript below oxygen. The anion, however, is responsible for the chemical's significant oxidative properties. The molecular formula for Potassium Permanganate is KMnO4. I assume you means for 1 molecule. 55 grams of potassium equal to 1 mole of potassium, therefore, 1gram of potassium equals 155mole of potassium. Problem #4: Suppose we knew that there were 8.170 x 10 20 atoms of O in an unknown sample of KMnO 4. Potassium is a metal that belongs to the alkali family. volume of the solution (in liters) by the concentration of the solution: 0 L x 0. Answer link What is the mass of 3.13 x 1021 atoms of KBr? Because potassium reacts so readily with water, it is not found in its elemental form in nature. The compound potassium permanganate has chemical formula KMnO4 Molecular mass of KMnO4 = 39.1 + 54.9 + 4 (16.0) = 158.0. It is used commercially primarily due to its color and oxidative potency. How many grams are in a mole of potassium permanganate? And in example 3, two benzoic acids are formed. How many atoms are present in 175 g of element (b)? Calculate the molar mass of potassium permanganate (KMn O4) Convert grams KMnO4 to moles or moles KMnO4 to grams Molecular weight calculation: 39.0983 + 54.938049 + 15.9994*4 Percent composition by element Calculate the molecular weight of a chemical compound Enter a chemical formula: Questions and Answers - How many atoms are in the human head? - JLab I needed to wait for it to wear off a little before I risked giving an answer. In potassium permanganate, there is both a distinctive cation and anion. This cookie is set by GDPR Cookie Consent plugin. How many moles of HCl are present in 500 mL of 0 M HCl solution? How many moles are in 4.9 x 1023 molecules of ZnCl2? Oxidation of Organic Molecules by KMnO4 - Chemistry LibreTexts Since it is not my question I have nothing to lose :)), I'll let you into the hall of creditfame tonight. A: . answered by DrBob222 January 8, 2016 (NH4)3PO4 = Nitrogen = 3 Hydrogen = 4x3 (12) Phosphorus = 1 Oxygen = 4 3+12+1+4=20 These cookies will be stored in your browser only with your consent. And the n -factor of H C l is 1. These cookies track visitors across websites and collect information to provide customized ads. How many oygen atoms in 4.64 x 10-3 mol of Al(NO 3) 3? 2 How many oxygen atoms are in 225 g of KMnO4? By performing the necessary multiplications, the calculation is given as Al atoms =2 x1, S atoms = 3 x1 and O atoms = 3 x 4. 0.166 M Answer to correct significant figures XM (b) How many moles of KMnO4 are present in 25.0 mL of a 0.0850 M solution? do you have? Mass of KMnO4 How many moles of HCl are present in 500 mL of 0 M HCl solution? Whether you need help solving quadratic equations, inspiration for the upcoming science fair or the latest update on a major storm, Sciencing is here to help. Calculate the molarity of H2C2O4 and KMnO4. How many moles are in KMnO4? Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. 39.0983 + 54.938049 + 15.9994*4. Alkyl-substituted rings can be coverted to poly-acids, which can be distinguished on the basis of their pKas. 1 How many atoms of potassium are in KMnO4? Carbon atoms with bonds, as in alkenes and alkynes. Molecular weight of KMnO4 is [39+65+(164)]= 158grams. We are NOT chemists, but Math nuts!!!!. : an American History (Eric Foner), Civilization and its Discontents (Sigmund Freud), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. 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With addition of heat and/or more concentrated KMnO4, the glycol can be further oxidized, cleaving the C-C bond. But opting out of some of these cookies may affect your browsing experience. Use dimensional analysis to calculate the number of O atoms in 1.4238 mol KMnO4. 5. What is the mass of 1.63 x 1021 silicon atoms? (A) - ITProSpt You are right about the not a chemist part . Copyright 2023 MassInitiative | All rights reserved. When alkaline KMnO4 is treated with KI, iodide ion is oxidised to IO 3-. How many mols are in 23.7 g of K M nO4? Compute Mass of Each Element. How many moles are in 25.0 grams of KMnO4? 0.124 mol KMnO4 - brainly.com As will be shown below, KMnO4 can be utilized to oxidize a wide range of organic molecules. { Oxidation_of_Organic_Molecules_by_KMnO4 : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { Addition_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Chan_Rearrangement : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Elimination_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Free_Radical_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Introduction_to_Bioconjugation : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Keck_Asymmetric_Allylation : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Named_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Organic_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Oxidation_and_Reduction_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Pericyclic_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reaction_Fundamentals : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactivity : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Reactivity_of_Alpha_Hydrogens : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Rearrangement_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Substitution_Reactions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Zimmerman-Traxler_Model" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, [ "article:topic", "showtoc:no", "license:ccbyncsa", "licenseversion:40" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FOrganic_Chemistry%2FSupplemental_Modules_(Organic_Chemistry)%2FReactions%2FOxidation_and_Reduction_Reactions%2FOxidation_of_Organic_Molecules_by_KMnO4, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), The half-reaction and oxidation potential, General Reactivity with Organic Molecules, Reactions with Specific Functional Groups, http://www.epa.gov/ogwdw/mdbp/pdf/alter/chapt_5.pdf, http://www.masterorganicchemistry.coboxylic-acids/, status page at https://status.libretexts.org, Carbon atoms with weak C-H bonds, such as, C-H bonds in the alpha-positions of substituted, C-H bonds in carbon atoms containing C-O bonds, including, Carbons with exceptionally weak C-C bonds such as, C-C bonds next to an aromatic ring AND an oxygen, Aliphatic carbons (except those alpha to an aromatic ring, as above), Aromatic carbons (except phenol, as above), Carbons without a C-H bond, except as in (3) above, Abiko, Atsushi; Roberts, John C.; Takemasa, Toshiro; Masamune, Satoru, Tetrahedron Letters (1986), 27(38), 4537-40. Given 25 g of NaCl, how many moles do you have? Becker is pursuing a Bachelor of Science in microbiology, immunology and molecular genetics at the University of California-Los Angeles. Q: JUllent in rhubarb found to have anti-tumor properties. Answer: The molar mass of KMnO4 is calculated by adding the atomic masses of all the atoms in the compound: K (39 g/mol) + Mn (54 g/mol) + 4O (4x16 g/mol) = 158 g/mol. ---------------------------------------------------- The chemical formula of potassium permanganate (KMnO4) indicates that one mole of the compound contains four moles of O atoms. DOC NOTES - MOLAR MASS AND MOLE CONVERSIONS - Livingston Public Schools You also have CDD. Molecular weight of KMnO4=158.034 g/mol 2.50 X 158.034=395.085 Since molecular weight of Oxygen=15.9994g/mol, therefore, 395.085/15.9994=24.694 moles of Oxygen. Carbon atoms with weak C-H bonds, such as. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Calculate the number of moles of potassium permanganate (KMnO_4) corresponding to 220.0 g of. 34 x 6 - 02 2x1023 ) Formula we Is = 1 408 x102 Formula units 3) gn 1 mol Nars, there as one . For example, H2 means there are two Hydrogen atoms.If we add up all of the atoms for AgNO3 we well find that we have a total of 5 atoms for Silver nitrate .When there is no number after an element, we assume there to be one atom of that element. Downing, Donald T.; Greene, Richard S., Journal of Investigative Dermatology (1968), 50(5), 380-6. contains 5.0 x 1022 atoms of carbon, how many molecules of sucrose are present in . How many mols are in 23.7 g of KMnO_4? | Socratic

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