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accuracy - ANSWER-describes how close a measurement is to the actual value precision - ANSWER-describes how closely repeated measurements agree with each other significant figures - ANSWER-1. all nonzero numbers are significant 2. zeros that appear between nonzero digits are significant 3. leading zeros are NOT significant 4. trailing zeros are significant IF there is a decimal point, but NOT significant if there is not a decimal adding/subtracting sig figs - ANSWER-least number of d...

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CHEM 103 MODULE 1 TO 6 EXAM LATEST QUESTIONS & CORRECT ANSWERS PORTAGE LEARNING|COMPLETE AGRADE 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 10 2 2. Convert 3.21 x 10 -5 = negative exponent = smaller t...

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Chem 103 Module 1 Study Questions With Correct Answers Latest Update 2026 1. calorimetry - ANSWER study of how much heat is involved in temperature or physical change 2. thermochemistry - ANSWER study of how much heat is involved in chemical change 3. exothermic - ANSWER heat given off by (or extracted from) system as process takes place ex using cold pack on injury, burning natural gas 4. endothermic - ANSWER heat absorbed by (or added to) system as process takes place e...

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accuracy - ANSWERSdescribes how close a measurement is to the actual value precision - ANSWERSdescribes how closely repeated measurements agree with each other significant figures - ANSWERS1. all nonzero numbers are significant 2. zeros that appear between nonzero digits are significant 3. leading zeros are NOT significant 4. trailing zeros are significant IF there is a decimal point, but NOT significant if there is not a decimal adding/subtracting sig figs - ANSWERSleast number of d...

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CHEM 103 MODULE 1 TO 6 EXAM QUESTIONS AND ANSWERS PORTAGE LEARNING|COMPLETE AGRADE MODULE 2 EXAM 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. 2. 1. Al2 (CO3 )3 C8 H6 NO4 Cl 2Al + 3C + 9O = 233.99 Module 1 to 6 Exam answers Portage learning 2. 8C + 6H +...

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CHEM 103 Module 1 Exam Solution Manual Solved Correctly Latest Version 2025 (Rated A+) Accuracy - Answers how close a measurement is to the true value Precision - Answers The degree to which repeated measurements show the same result. Compound - Answers A substance made up of atoms of two or more different elements joined by chemical bonds Molecule - Answers A group of atoms bonded together Element - Answers A pure substance made of only one kind of atom physical change - Answers a change ...

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pico - ANSWER-p 10^-12 kilo - ANSWER-k 10^3 centi - ANSWER-c 10^-2 nano - ANSWER-n 10^-9 micro - ANSWER-10^-6 milli - ANSWER-m 10^-3 Angstrom - ANSWER-Å, 10^-10 4 sig fig rules - ANSWER-a. all non zeros are significant b. zeros between non zeros are significant c. leading zeros are not significant figures d. trailing zeros are significant if there is a decimal point SI Unit of length - ANSWER-meter, m SI Unit of mass - ANSWER-kilogram, kg SI unit of time - ANSWE...

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kilo (k) - ANSWER-10^3 milli (m) - ANSWER-10^-3 nano (n) - ANSWER-10^-9 pico (p) - ANSWER-10^-12 micro - ANSWER-10^-6

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