Problem 1E: What is the total mass (amu) of carbon in each of the following molecules? CH4 CHCl3 C12H12O6... Problem 2E: What is the total mass of hydrogen in each of the molecules? CH4 CHCl3 C12H10O6 CH3CH2CH2CH2CH3 Problem 3E: Calculate the molecular or formula mass of each of the following: P4 H2O Ca( NO3)2 CH3CO2H (acetic... Problem 4E: Determine the molecular mass of the following compounds: Problem 5E: Determine the molecular mass of the following compounds: Problem 6E: Which molecule has a molecular mass of 28.05 amu? Problem 7E: Write a sentence that describes how to determine the number of moles of a compound in a known mass... Problem 8E: Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2. Which has the largest number of molecules?... Problem 9E: Which contains the greatest mass of oxygen: 0.75 mol of ethanol (C2H5OH), 0.60 mol of formic acid... Problem 10E: Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (C2H5OH), 1 mol of... Problem 11E: How are the molecular mass and the molar mass of a compound similar and how are they different? Problem 12E: Calculate the molar mass of each of the following compounds: hydrogen fluoride, HF ammonia, NH3... Problem 13E: Calculate the molar mass of each of the following: S8 C5H12 Sc2( SO4)3 CH3COCH3 (acetone) C6H12O6... Problem 14E: Calculate the empirical or molecular formula mass and the molar mass of each of the following... Problem 15E: Calculate the molar mass of each of the following: the anesthetic halothane, C2HBrClF3 the herbicide... Problem 16E: Determine the number of moles of compound and the number of moles of each type of atom in each of... Problem 17E: Determine the mass of each of the following: 0.0 146 mol KOH 10.2 mol ethane, C2H6 1.6103 mol Na2... Problem 18E: Determine the number of moles of the compound and determine the number of moles of each type of atom... Problem 19E: Determine the mass of each of the following: 2.345 mol LiCl 0.0872 mol acetylene, C2H2 3.3102 mol... Problem 20E: The approximate minimum daily dietary requirement of the amino acid leucine, C6H13NO2, is 1.1 g.... Problem 21E: Determine the mass in grams of each of the following: 0.600 mol of oxygen atoms 0.600 mol of oxygen... Problem 22E: A 55-kg woman has 7.5103 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many... Problem 23E: Determine the number of atoms and the mass of zirconium, silicon, and oxygen found in 0.3384 mol of... Problem 24E: Determine which of the following contains the greatest mass of hydrogen: 1 mol of CH4, 0.6 mol of... Problem 25E: Determine which of the following contains the greatest mass of aluminum: 122 g of AIPO4, 266 g of... Problem 26E: Diamond is one form of elemental carbon. An engagement ring contains a diamond weighing 1.25 carats... Problem 27E: The Cullinan diamond was the largest natural diamond ever found (January 25, 1905). It weighed 3104... Problem 28E: One 55-gram serving of a particular cereal supplies 270 mg of sodium, 11% of the recommended daily... Problem 29E: A certain nut crunch cereal contains 11.0 grams of sugar (sucrose, C12H22O11) per serving size of... Problem 30E: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL. What mass of... Problem 31E: Which of the following represents the least number of molecules? 20.0 g of H2O (18.02 glmol) 77.0 g... Problem 32E: What information do we need to determine the molecular formula of a compound from the empirical... Problem 33E: Calculate the following to four significant figures: the percent composition of ammonia, NH3 the... Problem 34E: Determine the following to four significant figures: the percent composition of hydrazoic acid, HN3... Problem 35E: Determine the percent ammonia, NH3, in Co( NH3)6Cl3, to three significant figures. Problem 36E: Determine the percent water in CuSO45H2O to three significant figures. Problem 37E: Determine the empirical formulas for compounds with the following percent compositions: 15.8% carbon... Problem 38E: Determine the empirical formulas for compounds with the following percent compositions: 43.6%... Problem 39E: A compound of carbon and hydrogen contains 92.3% C and has a molar mass of 78.1 g/mol. What is its... Problem 40E: Dichioroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and... Problem 41E: Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following... Problem 42E: Polymers are large molecules composed of simple units repeated many times. Thus, they often have... Problem 43E: A major textile dye manufacturer developed a new yellow dye. The dye has a percent composition of... Problem 44E: Explain what changes and what stays the same when 1.00 L of a solution of NaCl is diluted to 1.80 L. Problem 45E: What information do we need to calculate the molarity of a sulfuric acid solution? Problem 46E: What does it mean when we say that a 200-mL sample and a 400-mL sample of a solution of salt have... Problem 47E: Determine the molarity for each of the following solutions: (a) 0.444 mol of CoCl2 in 0.654 L of... Problem 48E: Determine the molarity of each of the following solutions: (a) 1.457 mol KCl in 1.500 L of solution... Problem 49E: Consider this question: What is the mass of the solute in 0.500 L of 0.30 M glucose, C6H12O6, used... Problem 50E: Consider this question: What is the mass of solute in 200.0 L of a 1.556-M solution of KBr? (a)... Problem 51E: Calculate the number of moles and the mass of the solute in each of the following solutions: (a)... Problem 52E: Calculate the number of moles and the mass of the solute in each of the following solutions: (a) 325... Problem 53E: Consider this question: What is the molarity of KMnO4 in a solution of 0.0908 g of KMnO4 in 0.500 L... Problem 54E: Consider this question: What is the molarity of HCl if 35.23 mL of a solution of HCl contain 0.3366... Problem 55E: Calculate the molarity of each of the following solutions: (a) 0.195 g of cholesterol, C27H46O, in... Problem 56E: Calculate the molarity of each of the following solutions: (a) 293 g HCl in 666 mL of solution, a... Problem 57E: There is about 1.0 g of calcium, as Ca2+, in LO L of milk. What is the molarity of Ca2+ in milk? Problem 58E: What volume of a 1.00MFe( NO3)3 solution can be diluted to prepare 1.00 L of a solution with a... Problem 59E: If 0.1718 L of a 0.3556-M C3H7OH solution is diluted to a concentration of 0.1222 M, what is the... Problem 60E: If 4.12 L of a 0.850 MH3PO4 solution is be diluted to a volume of 10.00 L, what is the concentration... Problem 61E: What volume of a 0.33MC12H22O11 solution can be diluted to prepare 25 mL of a solution with a... Problem 62E: What is the concentration of the NaCl solution that results when 0.150 L of a 0.556-M solution is... Problem 63E: What is the molarity of the diluted solution when each of the following solutions is diluted to the... Problem 64E: What is the final concentration of the solution produced when 225.5 mL of a 0.09988-M solution of... Problem 65E: A 2.00-L bottle of a solution of concentrated HCl was purchased for the general chemistry... Problem 66E: An experiment in a general chemistry laboratory calls for a 2.00-M solution of HCl. How many mL of... Problem 67E: What volume of a 0.20MK2SO4 solution contains 57 g of K2SO4? Problem 68E: The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances... Problem 69E: Consider this question: What mass of a concentrated solution of nitric acid (68.0% HNO3 by mass) is... Problem 70E: What mass of a 4.00% NaOH solution by mass contains 15.0 g of NaOH? Problem 71E: What mass of solid NaOH (97.0% NaOH by mass) is required to prepare 1.00 L of a 10.0% solution of... Problem 72E: What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19 g... Problem 73E: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,... Problem 74E: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,... Problem 75E: In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading in... Problem 76E: A throat spray is 1.40% by mass phenol, C6H5OH, in water. If the solution has a density of 0.9956... Problem 77E: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of... Problem 78E: A cough syrup contains 5.0% ethyl alcohol, C2H5OH, by mass. If the density of the solution is 0.9928... Problem 79E: D5W is a solution used as an intravenous fluid. It is a 5.0% by mass solution of dextrose (C6H12O6)... Problem 80E: Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H2SO4, for which the density... format_list_bulleted
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