Sig figs Study guides, Class notes & Summaries
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Chemistry 1212 Lab Final Exam Complete Questions and Answers
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Chemistry 1212 Lab Final Exam 
Complete Questions and Answers 
Introductory Lab - CORRECT ANSWER-Purpose: Review of sig figs, slope formula (Y2- 
Y1/X2-X1); percent error formula ([Accepted-Experimental (/) Accepted] x 100%); 
rounding, scientific notation, & excel. 
Procedure: Measured various objects for circumference (C=2πr) and diameter (2r), then 
produced a graph comparing the two factors. 
Results: N/A 
Significant Figure Rules - CORRECT ANSWER-1. All non-zeros are significant. 
Ex: ...
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Chemistry 1331 TOP Study Guide Exam Questions and CORRECT Answers
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All of them - what measured quantity have uncertainity? 
Certain digits - Digits which are not estimated 
Uncertain digits - Digits which must be estimated 
True value - The accepted value for a measurement accomplished by repeating 
measurement or theoretically from first principles 
Accuracy - How close a measurement is to the true value 
Precision - How well multiple measurements agree with one another 
Least sig figs - Rules for mathematical operations:
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PRAXIS CRAM - BIOLOGY 5236 Exam Questions With 100% Correct Answers
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PRAXIS CRAM - BIOLOGY 5236 Exam 
Questions With 100% Correct Answers 
Pros of stem cell research - answerCuring genetic diseases 
Growing skin for burn victims 
Growing new organs 
Cons of stem cell research - answerHarvesting embryonic stem cells kills the embryo, what 
constitutes a viable embryo? 
Cons of genetically modified foods - answerMan should not interfere, allergens, 
modifications not contained-could pass in to wild species 
Cons of cloning - answer- reduced gene pool 
- animals les...
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chem 120 final exam study guide| 127 Questions| With Complete Solutions
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chemistry correct answer: the science that tries to understand how matter behaves by studying how atoms and molecules behave 
 
scientific method correct answer: ways of learning that emphasizes observation and experimentation (self correcting) 
 
observation correct answer: we go out in nature and ask questions we measure or observe some aspect of nature 
 
hypothesis correct answer: tentative interpretation of an observation 
 
law correct answer: summarizes a large number of observations...
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Significant Figures Questions and Answers Scored A+
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Significant Figures Questions and Answers Scored A+ 
Rules for identifying significant figures 
1) All non-zero digits are significant 
2) Zeros that occur between significant digits are significant 
3) Zeros to the right of the decimal point AND at the end of the number are significant 
 
 
 
Rules for using significant figures with addition and subtraction 
1) Count the number of significant figures to the right of the decimal point for each number in the problem 
2) Add or subtract normally 
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Too much month left at the end of the money?
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Chem 1110 TOP Study Guide Questions and CORRECT Answers
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How many Sig Figs in 0.008202 - 4 
How many sig figs would be in the answer of 6.6 multiplied by 3.56007 - 2 
How can we calculate the number of neutrons? - Number of neutrons = mass number 
(A) - number of protons/ atomic number (Z) 
How can we calculate the atomic charge? - Atomic charge= number of protons- number 
of electrons 
Avogadro's number - 6.022 x 10^23. The number of particles in exactly one mole of a 
pure substance 
atomic mass unit (amu) - one twelfth the mass of a carbon-12 a...
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chem 121 study guide exam 1 updated 2024 with 100% complete solutions
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chem 121 study guide exam 1 updated 2024 with 100% complete solutions
- Exam (elaborations) • 5 pages • 2024
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PRAXIS CRAM - BIOLOGY 5236 Exam Questions With 100% Correct Answers
- Exam (elaborations) • 25 pages • 2024
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PRAXIS CRAM - BIOLOGY 5236 Exam 
Questions With 100% Correct Answers 
Pros of stem cell research - answerCuring genetic diseases 
Growing skin for burn victims 
Growing new organs 
Cons of stem cell research - answerHarvesting embryonic stem cells kills the embryo, what 
constitutes a viable embryo? 
Cons of genetically modified foods - answerMan should not interfere, allergens, 
modifications not contained-could pass in to wild species 
Cons of cloning - answer- reduced gene pool 
- animals les...
-
IB Physics SL Definitions (2023)
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IB Physics SL Definitions 
(2023) 
Precision - Answer-A measurement is said to be precise if it has little random errors 
Accuracy - Answer-A measurement is said to be accurate if it has little systematic errors 
Random Errors - Answer-A random error, is an error which affects a reading at random. 
Systematic Errors - Answer-A systematic error, is an error which occurs at each 
reading. 
Sig Figs (x or /) - Answer-use least # of sig figs 
Sig Figs (+ or -) - Answer-use least # of decimal places...
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