CHEM 121 Module 1 EXAM Questions and Answers- PORTAGE LEARNING

Question 1 q a




You may find the following resources helpful: Scientific
qa qa qa qa qa qa qa




Calculator (Links to an external site.) Periodic Table
qa qa qa qa qa qa qa qa




Equation Table q a




Complete the two problems below: qa qa qa qa




1. Convert 1005.3 to exponential form and explain your answer. q a q a q a q a q a q a q a q a




2. Convert 4.87 x 10-6 to ordinary form and explain your answer. q a q a q a
q a


q a q a q a q a q a q a




1. Convert 1005.3 = larger than 1 = positive exponent, move qa qa qa qa qa qa qa qa qa




decimal 3 places = 1.0053 x 103
qa qa qa qa qa qa qa




2. Convert 4.87 x 10-6 =negative exponent =smaller than 1, move qa qa qa
q a


qa qa qa qa qa




decimal6places=0.00000487 a
q a
q a
q a
q




Question 2 q a




You may find the following resources helpful: Scientific
qa qa qa qa qa qa qa




Calculator (Links to an external site.) Periodic Table
qa qa qa qa qa qa qa qa




Equation Table q a




Using the equation bank, complete the two conversions shown below,
qa qa qa qa qa qa qa qa qa




showing all work:
qa qa qa




1. 3.6 pounds = ? oz qa qa qa qa




2. 2680 ml =?liters qa qa a
q a
q




1. 3.6 pounds x 16 oz / 1 pound= 57.6 oz
q a q a q a q a q a q a q a q a q a




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qa qa qa qa qa qa qa qa qa qa qa qa qa




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, 2. 2680ml x1liter /1000 ml =2.68 liters a
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Question 3 q a




You may find the following resources helpful: Scientific
qa qa qa qa qa qa qa




Calculator (Links to an external site.) Periodic Table
qa qa qa qa qa qa qa qa




Equation Table q a




Do the three conversions shown below, showing all work:
q a q a q a q a q a q a q a q a




1. 78oC=?K a
q a
q a
q




2. 248oF = ? oC qa qa qa




3. 427K=?oF a
q a
q a
q a
q




1. 78oC+273=351K a
q a
q a
q a
q a
q
o
C → K (make larger) +273
qa q a qa qa qa




2. 248oF - 32 ÷ 1.8 = 120 oC qa qa qa qa qa qa qa
o
F→oC (makesmaller)-32÷1.8
a
q a
q a
q a
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q a
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3. 427K - 273 = 154 oC x 1.8 + 32 = 309.2 oF qa qa qa qa qa qa qa qa qa qa qa qa K→ oC→ oF
a
q a
q a
q qa




Question 4 q a




You may find the following resources helpful: Scientific
qa qa qa qa qa qa qa




Calculator (Links to an external site.) Periodic Table
qa qa qa qa qa qa qa qa




Equation Table q a




Complete the two problems below. Be sure to show the correct number of qa qa qa qa qa qa qa qa qa qa qa qa




significant figures in each calculation.
qa qa qa qa qa




1. Show the calculation of the mass of a 10.5 ml sample of mercury with
qa qa qa qa qa qa qa qa qa qa qa qa qa




density of 13.5 g/ml.
qa qa qa qa




2. Show the calculation of the volume of 21.3 grams of dioxane with density of
qa qa qa qa qa qa qa qa qa qa qa qa qa




1.03 g/ml.
qa qa




This study source was downloaded by 100000817935606 from CourseHero.com on 12-31-2021 01:18:55 GMT -06:00
qa qa qa qa qa qa qa qa qa qa qa qa qa




https://www.coursehero.com/file/79889687/Module-1-EXAM-CHE121docx/