Molecular weight - 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 219: Module 2 Exam Questions With 100% Correct Answers
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Chem 219: Module 2 Exam 
Questions With 100% Correct Answers 
What are hydrocarbons? - answerMolecules composed of only the elements carbon and 
hydrogen 
What are the two major classes of hydrocarbons? - answerAromatic (benzene) and aliphatic 
(alkanes, alkenes, alkynes) 
What is the main source of hydrocarbons? - answerFossil fuels like coal, petroleum, and 
natural gas obtained by mining and drilling. 
What are Alkanes? - answerThey are saturated hydrocarbons because their skeleton is only 
c...
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ACH3701 Exam (DETAILED ANSWERS) 2023 (October/November)
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ACH3701 Final Exam (DETAILED ANSWERS) 2023 (OCTOBER/NOVEMBER) 100% TRUSTED workings, explanations and solutions. For assistance call or us on +/ 2/ 5/ 4 /7 /7 /9 /5 /4 /0 /1 /3 /2 . 
QUESTION 1 [25] 
ACH3701 
OCTOBER/NOVEMBER 2023 
2 
1.1 Give 3 types of fuels and their explanations. (6) 
1.2 Mention 5 fuel sources and example of industries that consume the technology in 
south Africa. (5) 
1.3 Define the law of conservation and make two examples. (4) 
1.4 Define Heat in thermodynamics ...
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NBME CBSE ACTUAL TEST QUESTIONS AND ANSWERS(Quiz bank with all the correct answers)(usmle step 1)Medical
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NBME CBSE ACTUAL TEST 2022/2023 
A 44 year old man – 6 week feet numbness - chemotherapy with vincristine – MOA of Vincristine? 
Depolymerization of Microtubules 
10 year old - 95th percent height and 25th weight – Nurse thinks she has marfans – Molecular testing 
for FBN1 Gene shows single nucleotide change does not change amino acid at the locus - Explain the 
single nucleotide change in the patient and the mother? 
It is a polymorphism 
26 year old woman – ED – 2 day history of ru...
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HESI PHARMACOLOGY PRACTICE QUESTIONS FOR FINAL 2023/2024
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HESI PHARMACOLOGY PRACTICE QUESTIONS FOR FINAL 
 
 
 
 
A client is receiving clonidine (Catapres) 0.1 mg/24hr via transdermal patch. Which assessment finding indicates that the desired effect of the medication has been achieved? 
 A. Client denies recent episodes of angina. 
 B. Change in peripheral edema from +3 to +1. 
 C. Client denies recent nausea or vomiting. 
D. Blood pressure has changed from 180/120 to 140/70. Correct - ANSWER Catapres acts as a cen...
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CHEM 120 Week 8 Lab Practical Online Quiz
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Station 1. You have run an experiment studying the effects of the molecular weight of a compound on the rate of diffusion in agar. Compound X has a molecular weight of 25.3 g/mol and compound Y has a molecular mass of 156.2 g/mol. On two separate agar plates, 0.1 g of each substance were transferred and allowed to diffuse for 2 hours. The results below were obtained. Use this information about this situation to answer the following three questions. 
1.	Question: (CO 1) What was the independent v...
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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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Test Bank for Cardiopulmonary Anatomy and Physiology Essentials of Respiratory Care 7th Edition by Des Jardins
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Test Bank for Cardiopulmonary Anatomy and Physiology Essentials of Respiratory Care 7th Edition by Des Jardins Chapter 2 Ventilation 
MULTIPLE CHOICE 
1. What instrument is used to measure P 
atm 
? 
a. dynameter c. barometer 
b. altimeter d. hygrometer 
ANS: C 
Feedback 
A 
B 
C 
D 
A barometer is used to measure barometric (P 
B 
A barometer is used to measure barometric (P 
B 
A barometer is used to measure barometric (P 
B 
A barometer is used to measure barometric (P 
B 
) or atmospheric (...
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CHEM 103 module 2 notes MOLECULAR WEIGHT
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: MOLECULAR WEIGHT 
A compound is made up of two or more elements combined in a definite ratio that is 
represented by a molecular formula. Each of these elements has a certain atomic 
weight, which can be found in the periodic table. The sum of the atomic weights of 
the atoms in the molecular formula is called the formula weight or molecular 
weight or formula mass. We will use the term molecular weight for this number in our 
work. Here are three examples of molecular weight determination: 
C...
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PORTAGE LEARNING CHEM 103 MODULE 2 EXAM 2023
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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. (NH4)2CO3 
2. C8H6NO4Br
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