Concept explainers
(a)
Interpretation:
The number of grams of sodium are present in the samples has to be calculated.
Concept introduction:
Number of moles:
One mole is the equal to number of atoms in
The amount mass in grams can be calculated as:
The amount mass in grams =
(b)
Interpretation:
The number of grams of lead are present in the samples has to be calculated.
Concept introduction:
Number of moles:
One mole is the equal to number of atoms in
The amount mass in grams can be calculated as:
The amount mass in grams =
(c)
Interpretation:
The number of grams of diazepam are present in the samples has to be calculated.
Concept introduction:
Number of moles:
One mole is the equal to number of atoms in
The amount mass in grams can be calculated as:
The amount mass in grams =
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
General Chemistry: Atoms First
- Which molecule has a molecular mass of 28.05 amu?arrow_forward3.105 Nitric acid is often sold and transported as a concentrated 16 M aqueous solution. How many gallons of such a solution would be needed to contain the roughly 2.1109 pounds of HNO3 produced annually in the United States?arrow_forwardNitrogen fixation in the root nodules of peas and other legumes occurs with a reaction involving a molybdenum-containing enzyme named nitrogenase. This enzyme contains two Mo atoms per molecule and is 0.0872% Mo by mass. Calculate the molar mass of the enzyme.arrow_forward
- A sample of a hydrocarbon (a compound consisting of only carbon and hydrogen) contains 2.59 1023 atoms of hydrogen and is 17.3% hydrogen by mass. If the molar mass of the hydrocarbon is between 55 and 65 g/mol, what amount (moles) of compound is present, and what is the mass of the sample?arrow_forwardThe structure of one of the bases in DNA, adenine, is shown here. Which represents the greater mass: 40.0 g of adenine or 3.0 1023 molecules of the compound?arrow_forwardWhat is the molarity of each ion present in aqueous solutions of the following compounds prepared by dissolving 28.0 g of each compound in water to make 785 mL of solution? (a) potassium oxide (b) sodium hydrogen carbonate (c) scandium(III) iodite (d) magnesium phosphatearrow_forward
- 4.44 Industrial production of hydrogen gas uses the reaction shown below. If 1.00 metric ton of propane reacting with excess water yields 270 kg of H2, what is the percentage yield? C3H8(g)+3H2O(l)3CO(g)+7H2(g)arrow_forward(a) How many moles of ammonium ions are in 0.459 g of ammonium carbonate? _______mol(b) What is the mass, in grams, of 0.0329 mol of iron(III) phosphate? ________g(c) What is the mass, in grams, of 4.90 1023 molecules of aspirin, C9H8O4? ________g(d) What is the molar mass of a particular compound if 0.078 mol weighs 6.34 g? _________g/molarrow_forwardCalculate the following quantities:(a) mass, in grams, of 1.50 x 10-2 mol CdS(b) number of moles of NH4Cl in 86.6 g of this substance(c) number of molecules in 8.447 x 10-2 mol C6H6arrow_forward
- Calculate each of the following quantities: (a) Mass (g) of 0.68 mol of KMnO4 (b) Amount (mol) of O atoms in 8.18 g of Ba(NO3)2 (c) Number of O atoms in 7.3x1023 g of CaSO4*2H2Oarrow_forwardCalculate each of the following quantities:(a) Total number of ions in 38.1 g of SrF₂(b) Mass in kilograms of 3.58 mol of CuCl₂.2H₂O(c) Mass in milligrams of 2.88x10^22 formula units of Bi(NO₃).35H₂Oarrow_forwardCalculate each of the following quantities:(a) Mass in grams of 0.68 mol of KMnO₄ (b) Moles of O atoms in 8.18 g of Ba(NO₃)₂ (c) Number of O atoms in 7.3x10⁻³g of CaSO₄.2HO₂arrow_forward
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning