Chem 103 module 2 exam - Study guides, Class notes & Summaries
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CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning)
- Exam (elaborations) • 35 pages • 2023
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CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning) Convert 845.3 to exponential form and explain your answer. 
2. Convert 3.21 x 10-5 to ordinary form and explain your answer. 
1.Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places 
= 8.453 x 102 
2.Convert 3.21 x 10-5 = negative exponent = smaller than 1, move decimal 5 
places = 0. 
Question 2 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
Using the following info...
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CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning)
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CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning) Show the calculation of the mass of a 18.6 ml sample of freon with 
density of 1.49 g/ml 
2. Show the calculation of the density of crude oil if 26.3 g occupies 30.5 
ml. 
1. M = D x V = 1.49 x 18.6 = 27.7 g 
2. D = M / V = 26.3 / 30.5 = 0.862 g/ml 
Question 5 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
1. 3.0600 contains ? significant figures. 
2. 0.0151 contains ? significant figu...
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CHEM 103 Module 2 Exam (General Chemistry) – Portage Learning
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CHEM 103 Module 2 Exam (General Chemistry) – Portage Learning. Total Molecular Weight for Al (SO ) = 342.17 
2. C H NOBr 
C = 7 x 12.01 = 84.07 
H = 5 x 1.008 = 5.04 
N = 1 x 14.01 = 14.01 
O = 1 x 16.00 = 16.00 
Br = 1 x 79.90 = 79.90 
Total Molecule Weight for C H NOBr= 199.02 
2 4 3 
7 5 
7 5 
1. 2Al + 3S + 12O = 342.17 
2. 7C + 5H + N + O + Br = 199.02 
Question 2 10 / 10 pts 
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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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CHEM 103 Module 2 exam with correct answers.
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CHEM 103 Module 2 exam with correct answers.CHEM 103 Module 2 exam with correct answers.
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Portage Learning CHEM 103 MODULE 2 EXAM 2022 with Questions and RAtionales
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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
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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 with correct answers
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CHEM 103 Module 2 exam with correct answersCHEM 103 Module 2 exam with correct answersCHEM 103 Module 2 exam with correct answersCHEM 103 Module 2 exam with correct answers
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CHEM 103 MODULE 2 EXAM 202
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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 = 23
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CHEM 103 Module 2 exam with correct answers Latest Updated Examination study Guide 2024
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CHEM 103 Module 2 exam with correct answers 
Latest Updated Examination study Guide 2024
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