LIMITING REAGENTS TO2/S12 Based on the balanced equation Molar Mass (g/mol) СаН2 + 2H20 - Ca(ОН)2 + 2H2 CаН2 H20 Ca(OH)2 H2 Avogadro's No. 6.022x1023 mol1 42.094 calculate the number of excess reagent units remaining when 38 CaH2 formula units and 68 H20 18.015 molecules react? 74.092 2.016 exact number, no tolerance

LIMITING REAGENTS TO2/S12 Based on the balanced equation Molar Mass (g/mol) СаН2 + 2H20 - Ca(ОН)2 + 2H2 CаН2 H20 Ca(OH)2 H2 Avogadro's No. 6.022x1023 mol1 42.094 calculate the number of excess reagent units remaining when 38 CaH2 formula units and 68 H20 18.015 molecules react? 74.092 2.016 exact number, no tolerance

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 5STP

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Chlorine and fluorine react to form gaseous chlorine trifluoride. Initially, 1.75 mol of chlorine and 3.68 mol of fluorine are combined. (Assume 100% yield for the reaction.) (a) Write a balanced equation for the reaction. (b) What is the limiting reactant? (c) What is the theoretical yield of chlorine trifluoride in moles? (d) How many moles of excess reactant remain after reaction is complete.
itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?
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