Using the following data: Chemical lauric acid K: 3.90° Ckg/mol unknown mixture of unknown & lauric acid MP or FP (° C) 43.2 200.32 ? Formula Weight (g/mol) ? 39.9 n/a Determine the moles of unknown: correct number of significant figures.) Mass weighed out (g) 7.654 1.223 8.877 Determine the molecular mass of the unknown: 102 g/mol (Report with the X

Using the following data: Chemical lauric acid K: 3.90° Ckg/mol unknown mixture of unknown & lauric acid MP or FP (° C) 43.2 200.32 ? Formula Weight (g/mol) ? 39.9 n/a Determine the moles of unknown: correct number of significant figures.) Mass weighed out (g) 7.654 1.223 8.877 Determine the molecular mass of the unknown: 102 g/mol (Report with the X

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter3: Statistical Tests With Excel

Section: Chapter Questions

Problem 7P

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Q7\ How to prepare 20 MLof 0.1 N of H2SO4, if the density 1.8 g/ml & percentage 97%(m.wt of H2SO4 98%
Calculation of AH; of Magnesium Oxide Mg + 2 HCI MgCl2 * Hz2 AH, = kJ/mole MgCl2 +H2O > Mgo + 2 HCI -AH2 = kJ/mole He + 를 O2 + H2O AH3 = - 286 kJ/mole net: Mg + 을 O2- MgO 사Hnet = kJ/mole The literature value for the AHf of magnesium oxide is -602 kJ/mole.
Q7\ How to prepare 20 MLof 0.1 N of H2SO4, if the density 1.8 g/ml & percentage 97%m .wt of H2SO4 -98%
What is the cancentration of O.56 mole of Mcnesium Chlaide |CMGCA) in 50.0 mililiters of wctor?
t we didnt he ad tne sammple iong enouan +o remove all the H2C hydratičn ur calculatons would be neavierima king n toO 5. What mass of CUSO<(H2O)s (Copper II sulfate pentahydrate), when heated and dehydrated, would result in 6.23 g of anhydrous salt? 'n" have been too high or C6.2,39X159,69 MOI O39 0:391 CUSOU CH20)5 159.69 90 59.60+90 Y MOV 909 2/77g x 159.G9x 61239_X- 189 X C6,23+3.631539,86159 -TI626309 x 9= 3,6315 -x* 54.6.03903 うX = 20175 (CUSO4 OEABCH20).20167 0.03903 =CUSO4 CH2O)5 63,5 +32,1t 84:16 sced Chemistry with Vernier 2-3
A chemist measured the concentration of a solution three times and obtained the following results (in mol/L): 0.0147, 0.0146, 0.0148. Do the results appear precise, accurate, or neither? Explain. avenge =.0147 (pdimus.co 120 Doy Jine What information would you need for the results to be both precise and accurate? If the true value is 0.0149, calculate the percent error.
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aur X Macmilla X 2/ Course X 50 ~ T Sections X Submit Answer evo/index.html?deploymentid=5735112480241329813180832311&elSBN=9781305862883&id=1707786042&snapshot! References lancing Molecular Equations: This is group attempt 2 of 10 HOMEW X Use the References to access Important values if needed for this question. When the following molecular equation is balanced using the smallest possible Integer coefficients, the values of these coefficients are: Na (s) + H₂0 (1). NaOH (aq) + H₂ (8) ≡く □ □ A MindTap ㅁ Autosaved at 5:51 PM MacBook Air Gatoms to When the following molecular equation is balanced using the smallest possible Integer coefficients, the values of these coeffi Br₂(g) + Cl₂(g) →BrCl(g) X Dom