CHM130LL Take Home QuizWeek 13: StoichiometryEach correct answer scores the points shown in brackets.For full credit, show each step in your math setup, include measurement units, and use thesignificant figures convention. Balance the reaction equations as needed. All elements andcompounds are fictional. Google is not your friend.Alternate Universe Periodic TableA.5.00 g/molD.10.00 g/molE.15.00 g/mol 20.00 g/mol 25.00 g/molM.30.00 g/mol 35.00 g/molR1. Calculate the molar mass and the mass percentage of R (%R) in G2ER4.[o1]Molar Mass175%R222. Calculate the amount (in moles) of A2 produced by decomposing 0.750 moles of DA3.[o1]DA3 (g) –D2(g) +(8) )3. Calculate the molar concentration (molarity) of a solution prepared by dissolving a 2.75-gsample of GRA in enough water to make 250.mL of solution.[o1]mote

[1.] Molar mass of G2ER4 = ( 2 × 20.00 + 15.00 + 4 × 30.00 ) g/mol = 175.00 g/mol Mass% of R =…

CHM130LL Take Home Quiz Week 13: Stoichiometry Each correct answer scores the points shown in brackets. For full credit, show each step in your math setup, include measurement units, and use the significant figures convention. Balance the reaction equations as needed. All elements and compounds are fictional. Google is not your friend. Alternate Universe Periodic Table W 5.00 g/mol 10.00 g/mol 15.00 g/mol 20.00 g/mol 25.00 g/mol 30.00 g/mol 35.00 g/mol 1. Calculate the molar mass and the mass percentage of R (%R) in G2ER4. [o1] Molar Mass %R 2. Calculate the amount (in moles) of A2 produced by decomposing 0.750 moles of DA3. [o1] + (8) (8) 7V (8) EV 3. Calculate the molar concentration (molarity) of a solution prepared by dissolving a 2.75-g sample of GRA in enough water to make 250.mL of solution. [o1] UULUTI

CHM130LL Take Home Quiz Week 13: Stoichiometry Each correct answer scores the points shown in brackets. For full credit, show each step in your math setup, include measurement units, and use the significant figures convention. Balance the reaction equations as needed. All elements and compounds are fictional. Google is not your friend. Alternate Universe Periodic Table W 5.00 g/mol 10.00 g/mol 15.00 g/mol 20.00 g/mol 25.00 g/mol 30.00 g/mol 35.00 g/mol 1. Calculate the molar mass and the mass percentage of R (%R) in G2ER4. [o1] Molar Mass %R 2. Calculate the amount (in moles) of A2 produced by decomposing 0.750 moles of DA3. [o1] + (8) (8) 7V (8) EV 3. Calculate the molar concentration (molarity) of a solution prepared by dissolving a 2.75-g sample of GRA in enough water to make 250.mL of solution. [o1] UULUTI

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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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

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CHM130LL Take Home Quiz
Week 13: Stoichiometry
Each correct answer scores the points shown in brackets.
For full credit, show each step in your math setup, include measurement units, and use the
significant figures convention. Balance the reaction equations as needed. All elements and
compounds are fictional. Google is not your friend.
Alternate Universe Periodic Table
A.
5.00 g/mol
D.
10.00 g/mol
E.
15.00 g/mol 20.00 g/mol 25.00 g/mol
M.
30.00 g/mol 35.00 g/mol
R
1. Calculate the molar mass and the mass percentage of R (%R) in G2ER4.
[o1]
Molar Mass175
%R
22
2. Calculate the amount (in moles) of A2 produced by decomposing 0.750 moles of DA3.
[o1]
DA3 (g) –
D2(g) +
(8) )
3. Calculate the molar concentration (molarity) of a solution prepared by dissolving a 2.75-g
sample of GRA in enough water to make 250.mL of solution.
[o1]
mote

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