Constants I Penodic TableYou may want toreference (Pages 258-262) section 6.4 whilecompleting this problem.Part AAn unknown mass of each of the followingsubstances, initially at 25.0 C, absorbs 1960 ofheat The final temperature is recorded asindicated. Find the mass of each substance,a. Pyrex glass (T,55.6 C)Express your answer using two significant figures.SubmitPrevious Answers Request AnswerX Incorrect; Try Again; 14 attempts remainingPart Bsand (T62.3 °C)P PearsonCopyright © 2021 Pearson Education Inc. All rights reserved. Terms of Use| Privacy Policy I Permissions | Contact Us746

Answered: Image /qna-images/answer/c895385e-9499-4c3f-8c62-bf3a15735188.jpg

• Part A a. Pyrex glass (T, = 55.6 °C) %3D Express your answer using two significant figures. m%3D Submit Previous Answers Request Answer X Incorrect; Try Again; 14 attempts remaining - Part B sand (T = 62.3 °C)

• Part A a. Pyrex glass (T, = 55.6 °C) %3D Express your answer using two significant figures. m%3D Submit Previous Answers Request Answer X Incorrect; Try Again; 14 attempts remaining - Part B sand (T = 62.3 °C)

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Report 2 decimal places for all your answers. Do NOT include units in your answer. BaCl₂ H₂O 208.23 Mass of anhydrous BaCl₂ (amu) Mass of H₂O molecules in Hydrate (amu) Mass of Hydrate (amu) Percent H₂O in Hydrate (%) O BaCl 208.23 0.00 At n 208.23 plete the table. 0.00 % 18.02 226.25 7.97% Select one: O a. BaCl, • H2O O b. BaClz • 2 H2O O c. BaCl2 • 3 H2O O d. The data is inconclusive: it could be either BaCl₂ H₂O OR BaCl₂.2 H₂O O e. The data is inconclusive: it could be either BaCl₂ 2 H₂O OR BaCl₂ 3 H₂O BaCl₂ 2 H₂O 208.23 51°F 36.04 244.27 14.8 0 % Compare the experimental percent water you calculated for the barium chloride hydrate in the Question 6 in this assignment (above) with the theoretical percent water values calculated from the possible formulas in the table above. Do you think that the formula for hydrate is BaCl₂ H₂O, BaCl₂ 2 H₂O, or BaCl₂3 H₂O? End BaCl₂ 3 H₂O 208.23 PgUp 54.06 262.29 20.6 40) % J 6 Manage 9:44 PM 10/9/2022 PgDn
Using the data from the table above, calculate k. Round your answer to 3 significant figures. L ☐ X10 mol. min 5
4.35 L He/1 x 1 mole He/22.4 L He=0.19 moles He. Explain why the final answer of 0.19 moles makes more sense than 0.91 moles using the example answer attached to help.
591470&isprv=&drc3D0&qi=2475808&cfql=1&dnb3D08fro= How many moles of Al2(CO3)3 are there in 127 g of Al2(CO3)3 ? Round your answer to 2 decimals. Your Answer: Answer units D Add attachments to support your work
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Your neighbors are purchasing hamburgers for a backyard barbecue. They are expecting 36 guests and want to provide an average of 3 hamburgers per guest. The hamburgers are sold in packages of twelve. Set up the problem below and calculate the number of twelve-packs of hamburgers they will need. Place your conversion factors in order such that "guests" cancels first. 36 guests x packages Drag and drop your selection from the following list to complete the answer: 12 hamburgers 3 guests 12 guests 1 hamburger 36hamburgers 12 packages 36 packages 1 guest 36 guests 3hamburgers 1 package
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- 1 A certain liquid X has a normal boiling point of 95.40 °C and a boiling point elevation constant K,=0.75 °C•kg•mol A solution is prepared by dissolving some zinc chloride (ZNCI,) in 400. g of X. This solution boils at 96.5 °C. Calculate the mass of ZnCl, that was dissolved. Round your answer to 2 significant digits. olo Ar x10 ?
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ny ||| Using a chemical equation to find moles of product from moles... A major component of gasoline is octane (CH₁8). When liquid octane is burned in air it reacts with oxygen (O₂) gas to produce carbon dioxide gas and water 18 vapor. Calculate the moles of octane needed to produce 0.090 mol of water. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. 1 Explanation Check 8 Fraction X x10 0.0 Ś 1/5 Q Search 777 Jessica 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Access