Question 47. 12:511 Search< Вackhw6.pdf19: How many atoms are in each3.4 mol Cu, 9.7*103 mol C, 22.9 mol Hg, 0.215 mol Na25: How many moles of tin atoms are in a pure tin cup with a mass of 38.1 g?27: A pure gold coin contains 0.145 mol of gold. What is its mass?33: A pure silver ring contains 0.0134 mmol (milimol) Ag. How many silver atoms does itcontain?39: How many carbon atoms are in a diamond (pure carbon) with a mass of 38 mg?41: How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.28 kg?47: Determine the number of moles of molecules (or formula units) in each sample.38.2 g sodium chloride, 36.5 g nitrogen monoxide, 4.25 kg carbon dioxide,2.71 mg carbon tetrachloride51: A mothball, composed of naphthalene (C10H8), has a mass of 1.32 g. How manynaphthalene molecules does it contain?55: A sugar crystal contains approximately 1.8*1017 sucrose (C12H22011) molecules. What isits mass in milligrams?59: Determine the number of moles of CI in 2.7 mol CaCI,67: How many grams of Cl are in 38.0 g of each sample of chlorofluorocarbons (CFCS)?CF2C12, CFCI3, C2F3C]3, CF3CI73: A 1.912-g sample of calcium chloride is decomposed into its constituent elements andfound to contain 0.690 g Ca and 1.222 g Cl. Calculate the mass percent composition of Caand Cl in calcium chloride.79: Calculate the mass percent composition of nitrogen in each compoundN20, NO, NO2, N2O587: A compound containing nitrogen and oxygen is decomposed in the laboratory andproduces 1.78 g of nitrogen and 4.05 g of oxygen. Calculate the empirical formula of thecompound91: The rotten smell of a decaying animal carcass is partially due to a nitrogen-containingcompound called putrescine. Elemental analysis of putrescine indicates that it consists of54.50% C, 13.73% H, and 31.77% N. Calculate the empirical formula of putrescine. (Hint:Begin by assuming a 100-g sample and determining the mass of each element in that 100-gsample.)95: A 1.45-g sample of phosphorous burns in air and forms 2.57 g of a phosphorous oxide.Calculate the empirical formula of the oxide. (Hint: Determine the mass of oxygen in the2.57 g of phosphorous oxide by determining the difference in mass before and after thephosphorous burns in air.)93: These compounds are found in many natural flavors and scents. Calculate the empiricalformula for each compound« PreviousNext >15000DashboardCalendarТo DoNotificationsInbox

Answer 47 :- In this question we have to find out number of moles in each sample . Number of moles…

Answered: 47: Determine the number of moles of…

47: Determine the number of moles of molecules (or formula units) in each sample. 38.2 g sodium chloride, 36.5 g nitrogen monoxide, 4.25 kg carbon dioxide, 2.71 mg carbon tetrachloride

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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