CHEM 121 Module 1 EXAM Questions and Answers- PORTAGE LEARNING

Question 1 c.




You may find the following resources helpful: Scientific
c. c. c. c. c. c. c.




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




Equation Table c.




Complete the two problems below: c. c. c. c.




1. Convert 1005.3 to exponential form and explain your answer.
c. c. c. c. c. c. c. c.




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




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




decimal 3 places = 1.0053 x 103
c. c. c. c. c. c. c.




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




decimal6places=0.00000487 c
. c
. c
. c
.




Question 2 c.




You may find the following resources helpful: Scientific
c. c. c. c. c. c. c.




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




Equation Table c.




Using the equation bank, complete the two conversions shown below,
c. c. c. c. c. c. c. c. c.




showing all work:
c. c. c.




1. 3.6 pounds = ? oz c. c. c. c.




2. 2680 ml = ? liters c. c. c. c.




1. 3.6 pounds x 16 oz / 1 pound= 57.6 oz
c . c. c. c. c. c. c. c. c.




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c. c. c. c. c. c. c. c. c. c. c. c. c.




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, 2. 2680 ml x 1 liter / 1000 ml = 2.68 liters c. c. c. c. c. c. c. c. c. c.




Question 3 c.




You may find the following resources helpful: Scientific
c. c. c. c. c. c. c.




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




Equation Table c.




Do the three conversions shown below, showing all work:
c. c. c. c. c. c. c. c.




1. 78oC=?K .
c .
c c.




2. 248oF = ? oC c. c. c.




3. 427K=?oF .
c .
c .
c .
c




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




2. 248oF - 32 ÷ 1.8 = 120 oC c. c. c. c. c. c. c.
o
F →oC (make smaller) -32 ÷1.8
c. c. c. c. c. c.




3. 427K - 273 = 154 oC x 1.8 + 32 = 309.2 oF c. c. c. c. c. c. c. c. c. c. c. c. K→ oC → oF
c
. c. c. c.




Question 4 c.




You may find the following resources helpful: Scientific
c. c. c. c. c. c. c.




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




Equation Table c.




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




of significant figures in each calculation.
c. c. c. c. c. c.




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




density of 13.5 g/ml.
c. c. c. c.




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




1.03 g/ml.
c. c.




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c. c. c. c. c. c. c. c. c. c. c. c. c.




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