Concept explainers
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The number of molecules present in
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Explanation of Solution
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(b)
Interpretation:
The number of molecules present in
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Explanation of Solution
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Chapter 4 Solutions
Connect 1-Semester Access Card for General, Organic, and Biochemistry
- The reaction of methane and water is one way to prepare hydrogen for use as a fuel: CH4(g) + H2O(g) CO(g) + 3 H2(g) If you begin with 995 g of CH4 and 2510 g of water, (a) Which reactant is the limiting reactant? (b) What is the maximum mass of H2 that can be prepared? (c) What mass of the excess reactant remains when the reaction is completed?arrow_forwardThe compound SF6 is made by burning sulfur in an atmosphere of fluorine. The balanced equation is Sa(s) + 24 F2(g) SF6(g) Starting with a mixture of 1.6 mol of sulfur. Sg, and 35 mol of F2, (a) Which is the limiting reagent? (b) What amount of SF6 is produced?arrow_forwardCalculate the mass in grams of 3.839 moles of (a) hydrazine, a rocket propellant. (b) caffeine, C4H5N2O. (c) theobromine, C7H8N4O2, the alkaloid present in chocolate and cocoa.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_forwardHow much, in grams, does each of the following quantities of matter weigh? a. 2.00 moles of C atoms b. 3.00 moles of CO molecules c. 5.00 moles of F atoms d. 5.00 moles of F2 moleculesarrow_forwardWhat amount (moles) of compound is present in 1.00 g of each of the compounds in Exercise 52?arrow_forward
- Methane (CH4) is the main component of marsh gas. Heating methane in the presence of sulfur produces carbon disulfide and hydrogen sulfide as the only products. a. Write the balanced chemical equation for the reaction of methane and sulfur. b. Calculate the theoretical yield of carbon disulfide when 120. g of methane is reacted with an equal mass of sulfur.arrow_forwardPropane, C3H8, is the fuel of choice in a gas barbecue. When burning, the balanced equation is C3H8+5O23CO2+4H2O a What is the limiting reactant in cooking with a gas grill? b If the grill will not light and you know that you have an ample flow of propane to the burner, what is the limiting reactant? c When using a gas grill you can sometimes turn the gas up to the point at which the flame becomes yellow and smokey. In terms of the chemical reaction, what is happening?arrow_forwardConsider the chemical reaction 2 S + 3 O2 → 2 SO3. If the reaction is run by adding S indefinitely to a fixed amount of O2, which of these graphs best represents the formation of SO3? Explain your choice.arrow_forward
- Glycerol, 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_forwardThe 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_forwardHow many moles of beryllium (Be) are needed to completely react with 10.0 moles of N2 in the synthesis of the compound Be3N2?arrow_forward
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