Provided DataTime TemperatureCHM 131A Lab 9(min)(°C)Temperature of boiling water10025.40-40Initial temperature of water32.5144.92Temperature change (AT)56.9371.3Mass of beaker99.233486.65Mass of beaker and water226.31 g100.26100.67Mass of water100.689100.6I

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Answered: Provided Data Time Temperature CHM 131A…

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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CGE 32023#/ Dr. W. Scott Pers... Part C m = Submit Part D ΔΗ = How many grams of MgO are produced during an enthalpy change of -232 kJ ? Express your answer in grams to three significant figures. 0/ IVD| ΑΣΦ Submit Provide Feedback Krause etal_2007... Paraphrasing Paraphrasing Request Answer MacBook Air W aaac 2 0 0 ссссс VE ΑΣΦ Request Answer C 2. Ć Tool... Tool... ? How many kilojoules of heat are absorbed when 40.8 g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure? Lxpress your answer in kilojoules to three significant figures. 60 ? g X C C Ⓒ ✰ ✰ ☐ kJ Sentence Checker... | Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions Contact Us | + Update Next >
2) A student weighs a sample four times and collects the following data: a) Calculate the mean showing all work. m1 = 32.14 g m2 = 32.11 g m3 = 32.08 g m4 = 32.16 g b) Calculate the standard deviation showing all work. %3D %3D c) Calculate the relative standard deviation showing all work.
Be sure to answer all parts. Enter your answer in scientific notation. Carry out the following calculation, paying special attention to significant figures, rounding, and units (J-joule, the SI unit of energy; mol = mole, the SI unit for amount of substance): (6.022 x 1023 atoms/mol) (4.68 x 10-18 J/atom)(1-2-3-2)=[25.051 Note that the numbers 1 and 3 in the last term are exact. x 10 J/mol
A team of students is collecting measurements of the boiling point of a liquid. The team determines a result of 37.0 + 0.5°C. Through research, the team finds that the accepted value of the boiling point of the liquid is 37.4°C. Which conclusion can the team draw from this result? The experiment appears to have uncovered a more accurato value of the boiling point. O It appears the data was collected accurately. OIt appears the data was collected inaccurately. The experiment should be continued until the team, with the exact result. Next Tet Satety course
Reactions of AgNO3 | | | 1 AgNO3 (aq) AgNO3 (aq) AgNO3 (aq) AgNOs (aq) AgNO3 (aq) CaCl₂ (aq) AgNO3(aq) X * X X | | | Pb(NO3)2 (aq) HCl (aq) Na3PO4 (aq) Kl (aq) CuSO4 (aq) H₂SO4 (aq) NaOH (aq) ➜>> → PAGE 125 OF 232 puble Displacement Reactions
Identity of metal Mass of metal, (g) Copper 31.715 Trial 1 Mass of Styrofoam® cup and water, (g) 110.850 Mass of Styrofoam® cup, (g) 9.925 Trial 2 88.845 10.385 g Mass of water, (g) 100.925 78.46 Initial temperature of metal (Temperature of the boiling water) 90°C 98.5°C Initial temperature of water in cup, 22.5°C 22.5°C Final temperature of water and metal 25°C Specific heat of metal, (cal/g° C) Average specific heat of metal, (cal/g 33% 25°C 2.95% C) Calculations: ATwater Tf- Ti water °C ATmetal Tf-Ti metal ос = Qwater (1.00 cal/g°C) x ( _g H2O) x (°C) = cal Qmetal = - Qwater Cmatel Ometal/mmetal X ATmetal=- cal/[C g)x( °C)] = _cal/g°C
Multiply: (8.5 × 10') × (7.41 × 10") = 102) (a) %3D 8.8 × 10-8) × (8.6 x 10°) (8.6 x 10°) (b) (0) (8.62 x 10") × (9.4 x 10-") (d) (9.2 x 10-°) X (8.8 x 10-15
A student calibrated a 10-mL graduated cylinder using water. The empty graduated cylinder weighed 24.378 grams. When it was filled with 9.89 mL of deionized water, it weighed 33.826 grams. The temperature of the water was 21.8oC. What is the density of water, based on these measurements?
just 2 and 3 and maybe 4

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Provided Data Time Temperature CHM 131A Lab 9 (min) (°C) Temperature of boiling water 100 25.4 0 -40 Initial temperature of water 32.5 1 44.9 2 Temperature change (AT) 56.9 3 71.3 Mass of beaker 99.233 4 86.6 5 Mass of beaker and water 226.31 g 100.2 6 100.6 7 Mass of water 100.6 8 9 100.6 I