Read the information below, then answer the question. A laboratory assistant was experimenting with chemical reactions when she combined a small amount of zinc (Zn) with hydrochloric acid (HCI). She discovered that zinc chloride (ZnCl2) and hydrogen (H2) were produced. Equations Which equation correctly describes this reaction? O 2zn + 2HCI 2(ZnCl2 + H2) O Zn + 2HCI ZnCl2 + H2 O ZnCl2 + H2 Zn + 2HCI O Zn + HCI - ZnCl2 + H2 10 11 12 13 14 15 1

Read the information below, then answer the question. A laboratory assistant was experimenting with chemical reactions when she combined a small amount of zinc (Zn) with hydrochloric acid (HCI). She discovered that zinc chloride (ZnCl2) and hydrogen (H2) were produced. Equations Which equation correctly describes this reaction? O 2zn + 2HCI 2(ZnCl2 + H2) O Zn + 2HCI ZnCl2 + H2 O ZnCl2 + H2 Zn + 2HCI O Zn + HCI - ZnCl2 + H2 10 11 12 13 14 15 1

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 108E: The sugar sucrose, which is present in many fruits and vegetables, reacts in the presence of certain...

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You take 1.00 g of an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen), burn it in air, and collect 2.20 g CO2 and 0.400 g H2O. You know that the molar mass of aspirin is between 170 and 190 g/mol. Reacting 1 mole of salicylic acid with I mole of acetic anhydride (C4H6O3) gives you 1 mole of aspirin and 1 mole of acetic acid (C2H4O2). Use this information to determine the molecular formula of salicylic acid.
The space shuttle environmental control system handles excess CO2 (which the astronauts breathe out; it is 4.0% by mass of exhaled air) by reacting it with lithium hydroxide, LiOH, pellets to form lithium carbonate, Li2CO3, and water. If there are seven astronauts on board the shuttle, and each exhales 20. L of air pee minute, how long could clean air be generated if there were 25,000 g of LiOH pellets available for each shuttle mission? Assume the density of air is 0.0010 g/mL.
When an electric current is passed through an aqueous solution of NaCI, the valuable industrial chemicals H2(g), Cl2(g), and NaOH are produced. 2 NaCI(aq) + 2 H2O(l) H2(g) + Cl2(g) + 2 NaOH(aq) What mass of NaOH can be formed from 15.0 L of 0.35 M NaCI? What mass of chlorine is obtained?
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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)