B Brock Sakai : CHEM 1P91 - Fall Xb My Questions | bartlebyChemTeam: Combustion Analys X G oxygen molar mass - Google S X +Ims.brocku.ca/portal/site/90b45528-0b04-4bd2-85b6-897046a1e998/page/7011eaa9-4e38-4b06-9e15-1973abb58ef6Version 264 Assign 41 / 2100%+2.A mixture of Na2SO4 and its hydrate Na2SO4-10H2O has a mass of 1.5099 g. After heating to drive offall the water, the mass is only 1.1410 g. What is the weight percentage of Na2SO4•10H2O in the originalmixture? Report your answer to 4 significant figures.Molar masses: Na,SO4 142.04 g/mol; Na,SO4•10H2O 322.19 g/mol.3.MnCl2 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered andweighed. The balanced equation for the reaction is:MnCl2 (aq) + 2 A£NO3 (aq) → 2 AgCl (s) + Mn(NO3)2 (aq)Suppose you have a mixture that contains MnCl2, plus other compounds that do not react with AgNO3. If0.5159 g of the mixture yields 0.8715 g of AgCl, what is the percentage of MnCl2 in the mixture?Molar masses: MnCl2 125.84 g/mol AgCl 143.32 g/mol4.Potassium perchlorate is used in the production of fireworks and explosives. It is made in a two-stepreaction. First, potassium hypochlorite disproportionates to potassium chloride and potassium chlorate. Then thepotassium chlorate disproportionates again to form potassium perchlorate and potassium chloride. Theequations are:3 KСIO (аq) —2 KCI (аq) + КCІO; (аq)4 KCIO3 (aq) —3 KСІО4 (s) + KCІ (aq)What mass of KC1O4 (in kg) can be obtained from 2.80 kg of KC1O when these reactions are carried out?Molar masses (g/mol): Kcio 90.55KСIО4 138.555.An organic compound containing only C, H, and possibly O was subjected to combustion analysis. Asample weighing 0.4161 g yielded 0.686 g CO2 and 0.187 g H2O. What is the empirical formula of thecompound?6.For the complete redox reaction given here, (a) break down each reaction into its half reactions; (b)

The number of moles of a substance is calculated by using the formula moles = mass / molar mass

Potassium perchlorate is used in the production of fireworks and explosives. It is made in a two-step reaction. First, potassium hypochlorite disproportionates to potassium chloride and potassium chlorate. Then the potassium chlorate disproportionates again to form potassium perchlorate and potassium chloride. The equations are: 4. 3 KCIO (aq) → 2 KCI (aq) + KCIO3 (aq) 4 KCIO; (aq) → 3 KCIO4 (s) + KCl (aq) What mass of KCIO4 (in kg) can be obtained from 2.80 kg of KCIO when these reactions are carried out? Molar masses (g/mol): KCIO 90.55 KCIO4 138.55

Potassium perchlorate is used in the production of fireworks and explosives. It is made in a two-step reaction. First, potassium hypochlorite disproportionates to potassium chloride and potassium chlorate. Then the potassium chlorate disproportionates again to form potassium perchlorate and potassium chloride. The equations are: 4. 3 KCIO (aq) → 2 KCI (aq) + KCIO3 (aq) 4 KCIO; (aq) → 3 KCIO4 (s) + KCl (aq) What mass of KCIO4 (in kg) can be obtained from 2.80 kg of KCIO when these reactions are carried out? Molar masses (g/mol): KCIO 90.55 KCIO4 138.55

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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