Chem 103 Module 1 to 6 Exam with Verified answers (100 OUT OF 100) Portage learning (Latest Update)

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CHEM 103 MODULE1,2,3,4,5&6 EXAM t t t




QUESTIONS ANDCORRECTVERIFIED
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ANSWERS LATEST UPDATE 2024/2025-
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PORTAGE LEARNING
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MODULE 1 EXAM t t




Click this link to access the Periodic Table. This may be helpful throughout the
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exam.
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1. Convert 845.3 to exponential form and explain your answer. t t t t t t t t




2. Convert 3.21 x 10-5 to ordinary form and explain your answer. t t t
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1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places
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= 8.453 x 102
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2. Convert 3.21 x 10-5 = negative exponent = smaller than 1, move decimal 5
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places = 0.0000321 t t




Question 2 t



t Click this link to access the Periodic Table. This may be helpful throughout the
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t exam.


Using the following information, do the conversions shown below, showing all
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work:
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1 ft = 12 inches
t t t t 1 pound = 16 oz
t t t t 1 gallon = 4 quarts
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1 mile = 5280 feet
t t t t 1 ton = 2000 pounds
t t t t 1 quart = 2 pints
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kilo(= 1000) 1/100)
t t t milli (= 1/1000) deci t t t
centi (= t


t (= 1/10) t




1. 24.6 grams = ? kg t t t t




2. 6.3 ft = ? inches t t t t




1. 24.6 grams x 1 kg / 1000 g = 0.0246 kg t t t t t t t t t t




2. 6.3 ft x 12 in / 1 ft = 75.6 inches
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, 2

please always use the correct units in your final answer
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, 3


Question 3
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Click this link to access the Periodic Table. This may be helpful throughout
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the exam.
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Do the conversions shown below, showing all work:
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1. 28oC = ? oK t t t




2. 158oF = ? oC t t t




3. 343oK = ? oF t t t




1. 28oC + 273 = 301 oK t t t t t
o
C → oK (make larger)
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+273
2. 158oF - 32 ÷ 1.8 = 70 oC t t t t t t t
o
F → oC (make smaller)
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-32 ÷1.8 t




3. 343oK - 273 = 70 oC x 1.8 + 32 = 158 oF t t t t t t t t t t t t
o
K → oC → oF
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Question 4 t



t Click this link to access the Periodic Table. This may be helpful throughout the
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t exam.


Be sure to show the correct number of significant figures in each calculation.
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1. Show the calculation of the mass of a 18.6 ml sample of freon with
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density of 1.49 g/ml
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2. Show the calculation of the density of crude oil if 26.3 g occupies 30.5
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ml.
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1. M = D x V = 1.49 x 18.6 = 27.7 g
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2. D = M / V = 26..5 = 0.862 g/ml
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Question 5 t



t Click this link to access the Periodic Table. This may be helpful throughout the
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t exam.


1. 3.0600 contains ? significant figures. t t t t