Concept explainers
What is the percent composition of each of the following compounds?
(a)
Interpretation:
The percent composition of the given compound is to be determined.
Explanation of Solution
The percent composition of any substance is calculated by dividing the mass of the substance in a sample by the total mass of the sample. This ratio is multiplied by
To determine the percent composition, let the sample size be
The mass of S from the periodic table is
The mass of O from the periodic table is
Therefore, the total mass of
Now, the percent composition of S is as follows:
Now, the percent composition of O is as follows:
(b)
Interpretation:
The percent composition is to analyzed.
Explanation of Solution
To determine the percent composition, let the sample size be
The mass of Cu from the periodic table is
The mass of Cl from the periodic table is
Therefore, the total mass of
Now, the percent composition of Cu is as follows:
Now, the percent composition of Cl is as follows:
(c)
Interpretation:
The percent composition is to analyzed.
Explanation of Solution
To determine the percent composition, let the sample size be
The mass of Na from the periodic table is
The mass of P from the periodic table is
The mass of O from the periodic table is
Therefore, the total mass of
Now, the percent composition of Na is as follows:
Now, the percent composition of P is as follows:
Now, the percent composition of O is as follows:
(d)
Interpretation:
The percent composition is to analyzed.
Explanation of Solution
To determine the percent composition, let the sample size be
The mass of Mg from the periodic table is
The mass of N from the periodic table is
The mass of O from the periodic table is
Therefore, the total mass of
Now, the percent composition of Mg is as follows:
Now, the percent composition of N is as follows:
Now, the percent composition of O is as follows:
Want to see more full solutions like this?
Chapter 4 Solutions
INTO TO CHEMISTRY (EBOOK ACCESS CODE)
- The sugar sucrose, which is present in many fruits and vegetables, reacts in the presence of certain yeast enzymes to produce ethanol and carbon dioxide gas. Balance the following equation for this reaction of sucrose. C12H22O11(aq) + H2O(l) C2H5OH(aq) + CO2(g)arrow_forwardHow many moles of nitrogen atoms are present in 3.00-mole samples of each of the following compounds? a. S2N2 b. S4N4 c. NSF d. N4S4Cl4arrow_forwardHow many moles of specified particles are present in a sample of each of the following substances if each sample weighs 5.00 g? a. CO molecules b. CO2 molecules c. B4H10 molecules d. U atomsarrow_forward
- The active ingredient in Pepto-Bismo® (an over- the-counter remedy for an upset stomach) is bismuth sub-salicylate, C7H5BiO4. Analysis of a 1.7500-g sample of Pepto-Bismol yields 346 mg of bismuth. What percent by mass is bismuth subsalicylate in the sample? (Assume that there are no other bismuth-containing compounds in Pepto-Bismol.)arrow_forwardGlycerol, C3H8O3, is used as a moistening agent for candy and is the starting material for nitroglycerin. Calculate the mass of a glycerol molecule in grams.arrow_forwardA 0509-g sample of an unknown organic compound containing C, H, and O was burned in air to give 1.316 g of CO2 and 0.269 g of H2O. What is the empirical formula for this compound? (a) CHO (b) C2H2O (c) C4H4O (d) CHO4arrow_forward
- Calculate the molar mass of the following substances. a. b. c. (NH4)2Cr2O7arrow_forwardBalance the following equations. a Sn + NaOH Na2SnO2 + H2 b Al + Fe3O4 Al2O3 + Fe c CH3OH + O2 CO2 + H2O d P4O111 + H2O H3PO4 e PCl5 + H2O H3PO4 + HClarrow_forwardPhenol is a compound of carbon, hydrogen, and oxygen used commonly as a disinfectant. Combustion of a 175-mg sample of phenol yielded 491 mg CO2 and 100. mg H2O. Calculate the empirical formula of phenol. Identify what other information is needed to determine whether the empirical formula is the actual molecular formula.arrow_forward
- In an experiment designed to produce calcium oxide by the chemical reaction 2Ca + O2 2CaO 177.2 g of CaO was obtained out of a possible 203.9 g ofCaO. a. What is the theoretical yield of CaO? b. What is the actual yield of CaO? c. What is the percent yield of CaO?arrow_forwardWhat amount (moles) is represented by each of these samples? a. 150.0 g Fe2O3 b. 10.0 mg NO2 c. 1.5 1016 molecules of BF3arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning