avallablé until you sign in again.LearningrningCh 7 HWNajma Jama -> Normandale Community College - CHEM 1020 - Spring20 - NGWENDSON > Activities and Due Dates > Ch 7 HWonsくO Assignment Score:42.6%L Give Up?O HintResourcesCheck AnswerくQuestion 8 of 23100%CorrectSuppose you have two samples that are equal in weight, 28.3 g Ni and 28.3 g Fe, O2.Calculate the number of moles of each substance.85%Correct100%Ni:molCorrectmol0/100Fe,O3:100%Correct100%Correctprivacy policyterms of usecontact ushelpabout uscareersarning, Inc.13596.AaAPRPDF16DDF12DIIF11F10F9F8F6F5F4F3F2delete244.* CO

Since moles = mass / molar mass And molar mass of Ni = Atomic mass of Ni = 58.7 g/mol and molar…

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.27QAP

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19 g of unknown organic sample was dissolve in 640 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.78oC. Determine the molecular weight of the unknown sample? Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33 g/mL at 25 °C Round your answer to the nearest whole number, no units required.
Stock iron(II) solution (200Ug mL-1 Fe) ferrous ammonium sulfate hexahydrate mass= 0.1437g, transfer it to a 100 ml beaker. add 15 ml approx of water and 15m1 'approx of dilute sulphuric acid (2M H2SO.). then transfer FeII to 100 ml flask makeup to the mark with water. calculate the moles of ferrous ammonium sulfate hexahydrate solution in unit ug/mL.
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