5.3 QUESTION 7 Fill in the table (round mass and all answers to 3 sig fig) Mass Number of atoms 1 atom of Mg atom(s) amu (atomic mass from the periodic table) 1 atom of Mg atom(s) (use 1 amu = 1.66 x 1024 g to convert amu to grams) 1 mole of Mg g/mole atom(s) (molar mass from the periodic table) QUESTION 8 Aro ? oggn

5.3 QUESTION 7 Fill in the table (round mass and all answers to 3 sig fig) Mass Number of atoms 1 atom of Mg atom(s) amu (atomic mass from the periodic table) 1 atom of Mg atom(s) (use 1 amu = 1.66 x 1024 g to convert amu to grams) 1 mole of Mg g/mole atom(s) (molar mass from the periodic table) QUESTION 8 Aro ? oggn

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

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 3ALQ: True or false? The atom with the largest subscript in a formula is die atom with the largest percent...

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The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea formation is thereaction of water with arginine to produce urea and ornithine.(a) What is the mass percent of nitrogen in urea, arginine, andornithine? (b) How many grams of nitrogen can be excreted asurea when 135.2 g of ornithine is produced?
Given 100 g-mol of molybdotellurate: 3(NH4)2O.2TeO3.6MoO3.10H2O, calculate: a) kg molybdotellurateb) kg-mol TeO3c) kg H2d) kg He) H2O moleculesf) lb Teg) lb-atom Teh) Te atoms
A 15.152-gram sample of a hydrate was heated to drive off the water, leaving Al(NO3)3 (s) with a mass of 8.603 grams. Calculate the value of in Al(NO3)3•nH2O (s).
Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of CuI Are contained in 1.00 lb (454 g) of table salt containing 0.0100% CuI by mass?
The active ingredient in aspirin is acetylsalicylic acid, which has the chemical formula C9H8O4. An aspirin pill contains 300.0 mg of acetylsalicylic acid. How many moles of acetylsalicylic acid does it contain?
True or false? The atom with the largest subscript in a formula is die atom with the largest percent by mass in the compound. If true, explain why with an example. If false, explain why with an example. In either case, provide mathematical support
Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. Itcontains only C, H, and O. Combustion of 19.81mg terephthalic acid produces 41.98 mg CO2 and 6.45 mg H2O. If 0.250 mole of terephthalic 41.98 mg CO2 and 6.45 mg H2O. If 0.250 mole of terephthalic acid has a mass of 41.5 g, determine the molecular formula for terephthalic acid.
Diethyl ether (C4H10O)(C4H10O), the "ether" used medically as an anesthetic, is prepared commercially by treatment of ethyl alcohol (C2H6O)(C2H6O) with an acid. Part A) How many grams of diethyl ether would you obtain from 58.8 gg of ethyl alcohol if the percent yield of the reaction is 90.0 %% ? Express answer in appropriate units. 2C2H6O(l)Ethyl alcohol−→−AcidC4H10O(l)Diethyl ether+H2O(l) Part B) How many grams of ethyl alcohol would be needed to produce 102.7 gg of diethyl ether if the percent yield of reaction is 90.0 %% ?
6. A solid hydrate weighing 2.682 g was heated to drive off water. A solid anhydrous residue remained. Which weighed 1.420 g. a) Calculate the % water in the hydrate b) If the anhydrous residue has a formula weight of 142g/mole, how many moles of water are present in one mole of the hydrate?
Use stoichiometry (Ch 13) to calculate how many grams of PbSO4(s) would be produced if 5.50 grams of LiNO3 were produced. It will be helpful to do this on paper first. Li2SO4(aq) + Pb(NO3)2(aq) ⟶2 LiNO3(aq) + PbSO4(s) a. Select the value for the molar mass of LiNO3, with the correct value, significant figures, and units. b. Select the value for the molar mass of PbSO4, with the correct value, significant figures, and units. c. Select the mole ratio that will be used, with the correct values and units. d. Select the first operation and conversion factor used to cancel the given unit and substance. e. Lastly, select the calculated answer, expressed with the appropriate significant figures and unit.
Phosphoryl chloride, POCl3(g), is used in the manufacturing of flame retardants. It is manufactured in anequilibrium process in which phosphorus trichloride reacts with nitrogen dioxide to form POCl3(g)and NO(g)according to the following equation: PCl3 (g) + NO2 (g) ⇌ POCl3 (g) + NO (g) The Keq for this reaction at 800 Kc is 3.88. If 1.35 mol PCl3 (g) and 1.74 mol NO2 (g) are placed into a 2.5 Lcontainer, how many moles will there be of each gas when the reaction reaches equilibrium?
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