8 9 For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 0.523 moles x 0.821 L-atm/mol·K × 298 K/2.9 L = atm Type your answer... 1 point For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. 2.345/45123 + 0.23 × 43.5 = Type your answer... 1 point For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 12 donuts/dozen X 59,362 dozen = donut Type your answer... For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 8.3 lb = how many g? (hint: 16 oz = 1 lb, 28.35 g = 1 oz) Type your answer....

8 9 For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 0.523 moles x 0.821 L-atm/mol·K × 298 K/2.9 L = atm Type your answer... 1 point For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. 2.345/45123 + 0.23 × 43.5 = Type your answer... 1 point For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 12 donuts/dozen X 59,362 dozen = donut Type your answer... For the following questions, Perform the operation an express your answer in scientific notation with the correct number of significant figures. Do NOT put its unit in your answer because its unit is shown already in the questions. 8.3 lb = how many g? (hint: 16 oz = 1 lb, 28.35 g = 1 oz) Type your answer....

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section13.7: Colligative Properties Of Solutions

Problem 13.16E: Suppose that you are closing a cabin in the north woods for the winter and you do not want the water...

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osjQib5plVDqEPgxo?. O GASES Solving for a gaseous reactant Jacqueline v The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 1775. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide (HgO) into liquid mercury and gaseous dioxygen. 2. Suppose 25.0 mL of dioxygen gas are produced by this reaction, at a temperature of 70.0 °C and pressure of exactly 1 atm. Calculate the mass of mercury(II) oxide that must have reacted. Round your answer to 3 significant digits. Explanation Check O 2021 McGraw-Hill Education All Rights Resenved Terms of Uss Privacy Accessibility MacBook Air III