Introductory Chemistry: A Foundation
9th Edition
ISBN: 9781337399425
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 9, Problem 5CR
hat is meant by the percent composition by mass for a corn pound? Describe in general terms how this information is obtained by experiment for new compounds. How can this information be calculated for known compounds?
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How many particles are contained in 20.0 mole of NaCl? *
Type in answers without units, using scientific notation - include three decimal places
(thousandths place) EXAMPLE- TYPE ANSWER LIKE THIS: 6.345e25
Your answer
(Show all calculations where appropriate.)
1. A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt was
found to be 4.501 g. Use these data to calculate:
a) The mass of water in the hydrated salt.
b) The percent by mass of water in the hydrated salt.
2. If you have covered the topic of "the mole" in class, answer this question. Hint: Re-read the example in
the introduction.
4.64 g of Na,SO,*xH,O were heated to yield 2.84 g of Na,SO4. What is the value of x?
4. ocean water contains 3.4% sodium chloride by mass. How much salt can be obtained from 346.8 g of seawater.
Chapter 9 Solutions
Introductory Chemistry: A Foundation
Ch. 9.2 - ercise 9.1 Calculate the moles of CO2formed when...Ch. 9.3 - ercise 9.2 What mass of carbon dioxide is produced...Ch. 9.3 - ercise 9.3 Calculate the mass of water formed by...Ch. 9.3 - ur lab partner has made the observation that we...Ch. 9.3 - ercise 9.4 Hydrofluoric acid, an aqueous solution...Ch. 9.3 - ercise 9.5 In Example 9.6 we answered one of the...Ch. 9.5 - Lithium nitride, an ionic compound containing the...Ch. 9.6 - ercise 9.7 Titanium(IV) oxide is a white compound...Ch. 9 - elate Active Learning Question 2 from Chapter 2 to...Ch. 9 - You are making cookies and are missing a key...
Ch. 9 - Nitrogen (N2) and hydrogen (H2)react to form...Ch. 9 - Prob. 4ALQCh. 9 - ou know that chemical A reacts with chemical B....Ch. 9 - f 10.0 g of hydrogen gas is reacted with 10.0 g of...Ch. 9 - Prob. 7ALQCh. 9 - Prob. 8ALQCh. 9 - hat happens to the weight of an iron bar when it...Ch. 9 - Prob. 10ALQCh. 9 - What is meant by the term mole ratio? Give an...Ch. 9 - Which would produce a greater number of moles of...Ch. 9 - Consider a reaction represented by the following...Ch. 9 - Prob. 14ALQCh. 9 - Consider the balanced chemical equation...Ch. 9 - Which of the following reaction mixtures would...Ch. 9 - Baking powder is a mixture of cream of tartar...Ch. 9 - You have seven closed containers each with equal...Ch. 9 - Prob. 19ALQCh. 9 - Prob. 20ALQCh. 9 - Consider the reaction between NO(g)and...Ch. 9 - hat do the coefficients of a balanced chemical...Ch. 9 - he vigorous reaction between aluminum and iodine...Ch. 9 - Prob. 3QAPCh. 9 - hich of the following statements is true for the...Ch. 9 - or each of the following reactions, give the...Ch. 9 - or each of the following reactions, give the...Ch. 9 - Prob. 7QAPCh. 9 - Prob. 8QAPCh. 9 - onsider the balanced chemical equation...Ch. 9 - Write the balanced chemical equation for the...Ch. 9 - For each of the following balanced chemical...Ch. 9 - Prob. 12QAPCh. 9 - For each of the following balanced chemical...Ch. 9 - For each of the following balanced chemical...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - What quantity serves as the conversion factor...Ch. 9 - Prob. 18QAPCh. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - Boron nitride reacts with iodine monofluoride i...Ch. 9 - “Smelling salts,” which are used to revive someone...Ch. 9 - Calcium carbide, CaC2, can be produced in an...Ch. 9 - When elemental carbon is burned in the open...Ch. 9 - If baking soda (sodium hydrogen carbonate) is...Ch. 9 - Although we usually think of substances as...Ch. 9 - When yeast is added to a solution of glucose or...Ch. 9 - Sulfurous acid is unstable in aqueous solution and...Ch. 9 - Small quantities of ammonia gas can be generated...Ch. 9 - Elemental phosphorus bums in oxygen with an...Ch. 9 - Prob. 36QAPCh. 9 - Ammonium nitrate has been used as a high explosive...Ch. 9 - If common sugars arc heated too strongly, they...Ch. 9 - Thionyl chloride, SOCl2, is used as a very...Ch. 9 - Prob. 40QAPCh. 9 - Which of the following statements is(are) true? l...Ch. 9 - Explain how one determines which reactant in a...Ch. 9 - Consider the equation: 2A+B5C. If 10.0 g of A...Ch. 9 - Balance the following chemical equation, and then...Ch. 9 - For each of the following unbalanced reactions,...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - Lead(II) carbonate, also called “white lead,” was...Ch. 9 - Copper(II) sulfate has been used extensively as a...Ch. 9 - Lead(II) oxide from an ore can be reduced to...Ch. 9 - If steel wool (iron) is heated until it glows and...Ch. 9 - A common method for determining how much chloride...Ch. 9 - Although many sulfate salts are soluble in water,...Ch. 9 - Hydrogen peroxide is used as a cleaning agent in...Ch. 9 - Silicon carbide, SIC, is one of the hardest...Ch. 9 - Prob. 59QAPCh. 9 - The text explains that one reason why the actual...Ch. 9 - According to his prelaboratory theoretical yield...Ch. 9 - An air bag is deployed by utilizing the following...Ch. 9 - The compound sodium thiosutfate pentahydrate....Ch. 9 - Alkali metal hydroxides are sometimes used to...Ch. 9 - Although they were formerly called the inert...Ch. 9 - Solid copper can be produced by passing gaseous...Ch. 9 - Prob. 67APCh. 9 - Prob. 68APCh. 9 - Prob. 69APCh. 9 - When the sugar glucose, C6H12O6, is burned in air,...Ch. 9 - When elemental copper is strongly heated with...Ch. 9 - Barium chloride solutions are used in chemical...Ch. 9 - The traditional method of analysis for the amount...Ch. 9 - For each of the following reactions, give the...Ch. 9 - Prob. 75APCh. 9 - Consider the balanced equation...Ch. 9 - For each of the following balanced reactions,...Ch. 9 - For each of the following balanced equations,...Ch. 9 - Prob. 79APCh. 9 - Using the average atomic masses given inside the...Ch. 9 - For each of the following incomplete and...Ch. 9 - Prob. 82APCh. 9 - Prob. 83APCh. 9 - It sodium peroxide is added to water, elemental...Ch. 9 - When elemental copper is placed in a solution of...Ch. 9 - When small quantities of elemental hydrogen gas...Ch. 9 - The gaseous hydrocarbon acetylene, C2H2, is used...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - Hydrazine N2H4, emits a large quantity of energy...Ch. 9 - Consider the following reaction:...Ch. 9 - Before going to lab, a student read in his lab...Ch. 9 - Consider the following unbalanced chemical...Ch. 9 - Prob. 94CPCh. 9 - Consider the following unbalanced chemical...Ch. 9 - Over the years, the thermite reaction has been...Ch. 9 - Consider the following unbalanced chemical...Ch. 9 - Ammonia gas reacts with sodium metal to form...Ch. 9 - Prob. 99CPCh. 9 - he production capacity for acrylonitrile (C3H3N)in...Ch. 9 - Prob. 1CRCh. 9 - erhaps the most important concept in introductory...Ch. 9 - ow do we know that 16.00 g of oxygen Contains the...Ch. 9 - Prob. 4CRCh. 9 - hat is meant by the percent composition by mass...Ch. 9 - Prob. 6CRCh. 9 - Prob. 7CRCh. 9 - Prob. 8CRCh. 9 - Prob. 9CRCh. 9 - Consider the unbalanced equation for the...Ch. 9 - Prob. 11CRCh. 9 - What is meant by a limiting reactant in a...Ch. 9 - Prob. 13CRCh. 9 - Prob. 14CRCh. 9 - Prob. 15CRCh. 9 - Prob. 16CRCh. 9 - A compound was analyzed and was found to have the...Ch. 9 - Prob. 18CRCh. 9 - Prob. 19CRCh. 9 - Solid calcium carbide (CaC2)reacts with liquid...Ch. 9 - A traditional analysis for samples containing...
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