CHEM 133 Midterm Exam | Answered with complete solutions | Score 100/100

Quiz Submissions - CHEM 133 Midterm Exam

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Question 1 pts.

Dry ice (carbon dioxide) changes from a solid to a gas at –78.5°C. What is this
temperature in
°F?


–75.6°F


none of them are within 2°F of the right

answer. –12.6°F

–173°F

–



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Question 2 pts.
The state of matter for an object that has both definite volume and definite shape is

, liquid state


gaseous

state

elemental


state View


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Question 3 pts.
In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is
this diameter when expressed in nanometers?


1.8 × 10 9 nm


1.8 × 1n
0m
7



1.8 × 10 1 nm


1.8 × 10–5 nm


1.8 × 10–10 nm



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Question 4 pts.

A piece of antimony with a mass of 17.41 g is submerged in 46.3 cm3 of water in a
graduated cylinder. The water level increases to 48.9 cm 3. The correct value for the
density of antimony from these data is:

, 0.356 g/cm3


0.15 g/cm3


2.81 g/cm3


6.697


6.7 g/cm3



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Question 5 pts.
Using the rules of significant figures, calculate the following:




17.1


18


17.09

98

17



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Question 6 pts.

Li2S is named