Grams to moles Study guides, Class notes & Summaries
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Chem 103 Module 1 to 6 Exam with Verified answers (100 OUT OF 100) Portage learning (Latest Update)
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Chem 103 Module 1 to 6 Exam with Verified answers (100 OUT OF 100) Portage learning (Latest Update) 
 
 
MODULE 1 EXAM 
Question 1	 Click this link to access the Periodic Table. This may be helpful throughout the exam. 
1.	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 = smalle...
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CHEM 120 Week 5 Exam 2 (Units 3 and 4)
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1.	A solution is prepared by dissolving 50 g of KCl (74.6 g/mol) to a volume of 1 L. What is the molarity of this solution? 
2.	You prepare a solution by dissolving 20 g of NaCl to a volume of 350 mL in water. What is the mass/volume % concentration of this solution? 
3.	When the following reaction goes in the forward direction, what is the base? 
4.	You are preparing a buffered solution. So far, your solution contains H2PO4- ions, what would you add to this solution to prepare your buffer sy...
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CHEM 121 Final Exam Questions and Answers – Portage Learning
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CHEM 121 Final Exam Questions and Answers – Portage Learning. Do the three conversions shown below, showing all work: 
1. 328 K = ? oC 
2. 76oC = ? oF 
3. 135oF = ? K 
Your Answer: 
1 - 328 - 273 = 55 C 
2 - (76x 1.8) + 32 = 168.8 F 
3 - (135 - 32) / 1.8 = 57.2 C + 273 = 330.2 K 
 
1. 328K - 273 = 55 oC K → oC(make smaller) -273 
 
2. 76oC x 1.8 + 32 = 168.8 oF C → o oF (make larger) x 1.8 + 32 
 
3. 135oF - 32 ÷ 1.8 = 57.2 + 273 = 330.2 K oF → oC →K 
 
Question 2 
Not yet graded / 10...
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CHEM 103 Module 2 Exam (General Chemistry) – Portage Learning WITH COMPLETE SOLUTION UPDATED 2023|2024 RATED A+
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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. 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 = 5.04 
N = 1 x 14.01 = 14.01 
O = 1 x 16....
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CHEM 120 Exam 2: Chapters 5,6,7,8 (With Answer Key) - Chamberlain College of Nursing
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CHEM 120 Exam 2: Chapters 5,6,7,8 (With Answer Key) - Chamberlain College of Nursing.PART 1: Multiple Choice questions: Q 1-24. (2 point each) 
1. Chemical reactions (equations) show the following 
a. Reactants 
b. Products 
c. Physical state of each (gas or liquid or solid) 
d. All of the above 
2. The following is true for a mole 
a. It is also known as Avagadro’s number 
b. It contains 6.022 * 1023 molecules 
c. It contains mass equivalent to molecular weight 
d. All of the above are true 
...
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Test Bank For Chemistry The Molecular Science 5th Edition by John W. Moore
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Chapter 3: Chemical Reactions 
1. Which of the following cannot be determined from a balanced chemical equation? 
a. b. c. d. e. 
ANSWER: POINTS: TOPICS: OTHER: 
The number of molecules of reactants and products. The number of atoms of each element reacting. 
The number of moles of reactants and products. The relative mass of each reactant and product. Whether the reaction will proceed as written. 
e 
1 
3.1 Chemical Equations Comprehension 
2. In the reaction given below, if 12 moles of aluminu...
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TAMU BIOL 111 FLETCHER FINAL EXAM WITH VERIFIED SOLUTIONS ALREADY GRADED A+
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describe the basic functions all life forms must accomplish 
-response to environmental stimuli & maintain homeostasis 
-uptake and processing of nutrients/energy 
-regulation 
-growth and reproduction 
 
 
 
compare and contrast eukaryotic and prokaryotic cell types 
Prokaryotes: 
-circular chromosomes, no nucleus, no organelles, 3.5 bya 
-DNA concentrated in nucleoid 
Eukaryotes: 
-linear chromosomes, nucleus, organelles, 1.5 bya 
-DNA concentrated in nucleus 
Both: 
-cellular function takes p...
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Portage Learning / CHEM 104 / Module 1 to 6 Exams
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Portage Learning / CHEM 104 / Module 1 to 6 Exams 
. 
 
MODULE 1 EXAM 
Question 1	 Convert 845.3 to exponential form and explain your answer. 
1.	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	 
 
 
Using the following information, do the conversions shown below, showing all work:...
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CHEM 103 MODULE 3 EXAM WITH ANSWERS
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CHEM 103 MODULE 3 EXAM WITH ANSWERS 
 
 
Click this link to access the Periodic Table. This may be helpful throughout 
the exam. 
 
 
A reaction between HCl and NaOH is being studied in a styrofoam coffee cup with a lid and the heat given off is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 
 
 
1.	The type of thermochemical process 
 
2.	The calorimeter and mixture of HCl + NaOH Your Answer: 
1.	The typ...
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CHEM120 Week 8: Exam 3 (Units 5, 6, and 7) – With 100% Correct Answers- Download To Score An A+
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CHEM120 Week 8: Exam 3 (Units 5, 6, and 7) – With 100% Correct Answers- Download To Score An A+ 1. Question: (TCO 7) (a, 5 pts) Given that the molar mass of H3PO4 is 97.994 grams, determine t he number of grams of H3PO4 needed to prepare 0.25L of a 0.2M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.2 M H3PO4 solution can be prepared by diluting 50 mL of a 5M H3PO4 solution? Show your work. (Pts. : 10) A. Molarity = moles of solute/liters of solution moles of solute ...
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