CHEM 103 MODULE 2 (CHEM103)
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CHEM 103 Module 2 Exam Questions and Answers | Portage Learning (2023-2024)
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1.18 moles of C9H8NO4Cl 
Grams = 1.18 moles X 229.614 = 270.944 grams --> 270.9 grams of 
C H NO Cl 
C = 9 x 12.01 = 108.09 
H = 8 x 1.008 = 8.064 
N = 1 x 14.01 = 14.01 
O = 4 x 16.00 = 64 
Cl = 1 x 35.45 = 35.45 
Molecular Weight of C H NO Cl = 229.614 
3 4 2 
9 8 4 
9 8 4 
1. Grams = Moles x molecular weight = 1.05 x 310.18 = 325.7 
grams 
2. Grams = Moles x molecular weight = 1.18 x 229.61 = 270.9 
grams 
Question 4 10 / 10 pts 
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Scientific Ca...
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CHEM 103 Module 2 Exam (Portage Learning)
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CHEM 103 Module 2 Exam (Portage Learning) Show the calculation of the molecular weight for the following 
compounds, reporting your answer to 2 places after the decimal. 
1. Al (SO ) 
2. C H NOBr 
2 4 3 
7 5 
1. Al (SO ) 
Al = 2 x 26.98 = 53.96 
S = 3 x 32.07 = 96.21 
O = 12 x 16.00 = 192 
2 4 3 
M2: Exam - Requires Respondus LockDown Browser + Webcam: General Chemistry I w/Lab-2021- Kozminski 
3/18 
Total Molecular Weight for Al (SO ) = 342.17 
2. C H NOBr 
C = 7 x 12.01 = 84.07 
H = 5 x 1.008 ...
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CHEM 103 MODULE 2 EXAM 2022
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CHEM 103 
MODULE 2 EXAM 2022 
Question 1 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
Show the calculation of the molecular weight for the following 
compounds, reporting your answer to 2 places after the decimal. 
1. Al2(CO3)3 
2. C8H6NO4Cl 
1. 2Al + 3C + 9O = 233.99 
2. 8C + 6H + N + 4O + Cl = 215.59 
Question 2 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
Show the calculation of the number of moles in th...
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CHEM 103 MODULE 2 EXAM 2022
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[Document subtitle] 
 
 
CHEM 103 
MODULE 2 EXAM 2022 
 
Question 1	 Click this link to access the Periodic Table. This may be helpful throughout the exam. 
 
 
Show the calculation of the molecular weight for the following compounds, reporting your answer to 2 places after the decimal. 
 
 
1.	Al2(CO3)3 
 
 
2.	C8H6NO4Cl 
 
1.	2Al + 3C + 9O = 233.99 
 
2.	8C + 6H + N + 4O + Cl = 215.59 
 
Question 2	 ...
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