16 the m, you iave 30 minutes to upload your work on Canvas. Question 14 A student determines the molar mass of a compound to be 145g/mol. If the theoretical value is 162g/mol, what is the percent error? O 11.7% O 9.25% O 10.5% O 8.14% * Previous Nex No new data to save. Last checked at 12:33pm Subm

16 the m, you iave 30 minutes to upload your work on Canvas. Question 14 A student determines the molar mass of a compound to be 145g/mol. If the theoretical value is 162g/mol, what is the percent error? O 11.7% O 9.25% O 10.5% O 8.14% * Previous Nex No new data to save. Last checked at 12:33pm Subm

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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calula te bollowing 1a) ob (2) Num ber 6molecules in 0-250 moles NH3
s Percent 3 Submitting an external tool ers or 7 of for n d n ▼ ▼ Q Search Part A L Submit Volume = Value HA Part B Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it. The median lethal dose of KCN for a person weighing 115 lb (52.2 kg) is 6.01x10-3 mol. What volume of a 0.0680 M KCN solution contains 6.01x10-3 mol of KCN? Express the volume to three significant figures and include the appropriate units. ▶View Available Hint(s) mol Previous Answers PRE Units hp www ? 4 X Incorrect; Try Again; 5 attempts remaining The value you reported corresponds to the volume of solution that contains 0.0680 mol of KCN. You need to find the volume of solution that contains 6.01×10-3 mol of KCN To find the volume of solution (L) containing the specified number of moles of solute, multiply the given moles by the concentration so that the units of mole cancel. p (3 EA ? Help 4 of 10 L Review | Constants| Periodic Table
mistry app.101edu.co YouTube Maps NG AMOUNT * @ 7 2 X W S F2 X Jill # Welcome to MyTCC Welcome to MyTCC 3 F3 E D C 20: $ 4 R F 30 % 35.6 V Aluminium has a density of 2.70 g/cm² How many moles of aluminum are in a 13.2 cm block of the metal substance? 4 ADD FACTOR X x() F5 5 molecules Al T Content G 1.32 F6 A 6 B 2.70 0.489 g Al/mol F7 Y & H Question 1 of 50 0.100 g/cm² W 7 26.98 N ASUS X F8 U J g Al Lo b Home | bartleby ANSWER 8 962 13.2 F9 | M mol Al 1 1 K F10 9 < I RESET 5 6.022 x 10 O cm 1 F11 O L X + 10 P : F12 - I Prt Sc 1 ? + [ Q 12 ☆ = 12 Insert 1 Delete Backspace J Submit Home Enter PgUp Shift Pe
A sample of a gaseous binary compound of boron and fluorine weighing 0.794 g is decomposed to give 0.176 g of solid B. In a separate experiment, the molar mass of the compound is determined to be 97.6 g/mol. Determine the molecular formula of the compound. Submit Answer Use the References to access important values if needed for this question. Try Another Version 5 item attempts remaining Enter B before F.
Part D Calculate the moles of C2 H6 in 3.76x1023 molecules of C2 H6. Express your answer using three significant figures. moles of C2 H6 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback < Previous
Done 9 of 29 Question 7 An empirical formula atways indicates the simplest whole-number ratio of different atoms in a compound. True F False E Feedback
7.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 152. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 10.86 g water 5.33 g Use this information to find the molecular formula of X. Ar Check Explanation Privacy Terms of Use O 2019 McGraw-Hill Education. All Rights Reserved. 4:37 PM 12/5/2019 99+ OType here to search hp end home ins prt sc delete f12 f11 f10 f9 f8 f6 10 f5 f3 f2 num lock backspace esc 8.
Question 79 The molecular weight of cholesterol is 386.65 g/mole. What is the mass of one molecule of cholesterol? (- For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
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Results table. To clean up, zoom out from the balance and drag the sample to the red disposal container. Repeat with ammonium chloride (NH4Cl), located on the Salts shelf. C12H22O11 NH4ClMass (g) 1.0481 g 1.0444g Molar Mass (g/mol)MolesMoles of each elementAtoms of each element Much like the previous calculation, you will use the periodic table to determine the molar massof the compound. The example shown is for sodium chloride, NaCl. The molar mass is the massof 1 sodium (22.98g/mole) and 1 chlorine (35.45g/mole) added together, 58.43g/mole. If theformula shows multiple atoms, as in sugar, you must take that into account. For sugar, it will be12 times the mass of a carbon atom plus 22 time the mass of hydrogen atom, plus 11 times themass of oxygen atoms.The calculation of moles will be similar to that done in the previous…
Answer to #1 percent comp = 2.12% Answer to #2 39.94% water in the unknown