Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Chapter 4, Problem 85E
A 0.025-g sample of a compound composed of boron and hydrogen, with a molecular mass of ~28 amu, burns spontaneously when exposed to air, producing 0.063 g of
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Chapter 4 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 4 - What does it mean to say an equation is balanced?...Ch. 4 - Consider molecular, complete ionic, and net ionic...Ch. 4 - Balance the following equations: (a)...Ch. 4 - Balance the following equations: (a)...Ch. 4 - Write a balanced molecular equation describing...Ch. 4 - Write a balanced equation describing each of the...Ch. 4 - Colorful fireworks often involve the decomposition...Ch. 4 - Fill in the blank with a single chemical formula...Ch. 4 - Aqueous hydrogen fluoride (hydrofluoric acid) is...Ch. 4 - A novel process for obtaining magnesium from sea...
Ch. 4 - From the balanced molecular equations, write the...Ch. 4 - Use the following equations to answer the next...Ch. 4 - Indicate what type, or types, of reaction each of...Ch. 4 - Indicate what type, or types, of reaction each of...Ch. 4 - Silver can be separated from gold because silver...Ch. 4 - Determine the oxidation states of the elements in...Ch. 4 - Determine the oxidation states of the elements in...Ch. 4 - Determine the oxidation states of the elements in...Ch. 4 - Classify the following as acid-base reactions or...Ch. 4 - Identify the atoms that are oxidized and reduced,...Ch. 4 - Complete and balance the following acid-base...Ch. 4 - Complete and balance the following acid-base...Ch. 4 - Complete and balance the following...Ch. 4 - Complete and balance the following...Ch. 4 - Complete and balance the equations for the...Ch. 4 - When heated to 700—800 C, diamonds, which are pure...Ch. 4 - The military has experimented with lasers that...Ch. 4 - Write the molecular, total ionic, and net ionic...Ch. 4 - Great Lakes Chemical Company produces bromine,...Ch. 4 - In a common experiment in the general chemistry...Ch. 4 - Lithium hydroxide may be used to absorb carbon...Ch. 4 - Calcium propionate is sometimes added to bread to...Ch. 4 - Complete and balance the equations of the...Ch. 4 - Copper(II) sulfide is oxidized by molecular oxygen...Ch. 4 - Write balanced chemical equations for the...Ch. 4 - Calcium cyclamate Ca(C6H 11 NHSO3)2 is an...Ch. 4 - Complete and balance each of the following...Ch. 4 - Complete and balance each of the following...Ch. 4 - Balance each of the following equations according...Ch. 4 - Balance each of the following equations according...Ch. 4 - Balance each of the following equations according...Ch. 4 - Write the balanced equation, then outline the...Ch. 4 - Write the balanced equation, then outline the...Ch. 4 - Write the balanced equation, then outline the...Ch. 4 - Write the balanced equation, then outline the...Ch. 4 - H2 is produced by the reaction of 118.5 mL of a...Ch. 4 - Gallium chloride is formed by the reaction of 2.6...Ch. 4 - I2 is produced by the reaction of 0.4235 mol of...Ch. 4 - Silver is often extracted from ores such as...Ch. 4 - What mass of silver oxide, Ag2O, is required to...Ch. 4 - Carborundum is silicon carbide, SiC, a very hard...Ch. 4 - Automotive air bags inflate when a sample of...Ch. 4 - Urea, CO( NH2)2, is manufactured on a large scale...Ch. 4 - In an accident, a solution containing 2.5 kg of...Ch. 4 - A compact car gets 37.5 miles per gallon on the...Ch. 4 - What volume of 0.750 M hydrochloric acid solution...Ch. 4 - What volume of a 0.2089 M Kl solution contains...Ch. 4 - A mordant is a substance that combines with a dye...Ch. 4 - The toxic pigment called white lead, Pb3(OH)2(...Ch. 4 - The following quantities are placed in a...Ch. 4 - What is the limiting reactant in a reaction that...Ch. 4 - Which of the postulates of Dalton’s atomic theory...Ch. 4 - A student isolated 25 g of a compound following a...Ch. 4 - A sample of 0.53 g of carbon dioxide was obtained...Ch. 4 - Freon-12, CCl2F2, is prepared from CCl4 by...Ch. 4 - Citric acid, C6H5CH3, a component of jams,...Ch. 4 - Toluene, C6H5CH3, is oxidized by air under...Ch. 4 - In a laboratory experiment, the reaction of 3.0...Ch. 4 - Outline the steps needed to solve the following...Ch. 4 - Outline the steps needed to determine the limiting...Ch. 4 - Outline the steps needed to determine the limiting...Ch. 4 - What is the limiting reactant when 1.50 g of...Ch. 4 - Uranium can be isolated from its ores by...Ch. 4 - How many molecules of C2H4Cl2 can be prepared from...Ch. 4 - How many molecules of the sweetener saccharin can...Ch. 4 - The phosphorus pentoxide used to produce...Ch. 4 - Would you agree to buy 1 trillion...Ch. 4 - What volume of 0.0105-M HBr solution is required...Ch. 4 - Titration of a 20.0-mL sample of acid rain...Ch. 4 - What is the concentration of NaCl in a solution if...Ch. 4 - In a common medical laboratory determination of...Ch. 4 - Potatoes can be peeled commercially by soaking...Ch. 4 - A sample of gallium bromide, GaBr3, weighing 0....Ch. 4 - The principal component of mothballs is...Ch. 4 - A 0.025-g sample of a compound composed of boron...Ch. 4 - Sodium bicarbonate (baking soda), NaHCO3, can be...Ch. 4 - What volume of 0.600 M HCl is required to react...Ch. 4 - What volume of 0.08892 M HNO3 is required to react...Ch. 4 - What volume of a 0.3300-M solution of sodium...Ch. 4 - What volume of a 0.00945-M solution of potassium...Ch. 4 - A sample of solid calcium hydroxide, Ca(OH)2, is...Ch. 4 - What mass of Ca(OH)2 will react with 25.0 g of...Ch. 4 - How many milliliters of a 0.1500-M solution of KOH...Ch. 4 - Potassium acid phthalate, KNaC8H4O4, or KHP, is...Ch. 4 - The reaction of WCl6 with Al at ~400 C gives black...
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- Tungsten (W) metal, which is used to make incandescent bulb filaments, is produced by the reaction WO3+3H23H2O+W How many grams of H2 are needed to produce 1.00 g of W?arrow_forwardNitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g)+5O24NO(g)+6H2O(g)2NO(g)+O2(g)2NO2(g)3NO2(g)+H2O(l)2HNO3(aq)+NO(g) What mass of NH3 must be used to produce 1.0 106 kg HNO3 by the Ostwald process? Assume 100% yield in each reaction, and assume that the NO produced in the third step is not recycled.arrow_forward4.28 One of the steps in the manufacture of nitric acid is the oxidation of ammonia shown in this equation: 4NH3(g)+5O2(g)4NO(g)+6H2O(g) If 43.0 kg of NH3 reacts with 35.4 kg of O2, what mass of NO forms?arrow_forward
- 4.19 How many metric tons of carbon are required to react with 7.83 metric tons of Fe2O3 according to the following reaction? 2Fe2O3+3C3CO2+4Fe How many metric tons of iron are produced?arrow_forwardBacterial digestion is an economical method of sewage treatment. The reaction is an intermediate step in the conversion of the nitrogen in organic compounds into nitrate ions. What mass of bacterial tissue is produced in a treatment plant for every 1.0 104 kg of wastewater containing 3.0% NH4+ ions by mass? Assume that 95% of the ammonium ions are consumed by the bacteria.arrow_forwardPhosphoric acid, H3PO4, can be prepared by the reaction of phosphorus(V) oxide, P4O10, with water. 14P4O10(s)+32H2O(l)H3PO4(aq);H=96.2kJ What is H for the reaction involving 1 mol of P4O10? P4O10(s)+6H2O(l)4H3PO4(aq)arrow_forward
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