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CHM101 Exam 1 (All Questions and Answers for Chapters 1-3) 2024/2025 Update
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CHM101 Exam 1 (All Questions and Answers for Chapters 1-3) 2024/2025 Update
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CHM101 Exam 1 (All Questions and Answers for Chapters1-3) 2024/2025 Update
In the custom section of the PhET lab, what is the mass of the Styrofoam in kg? Enter your answer
as a number only with two sig figs. - ANSWER 0.75
According to the PhET density lab, gold was the densest object. What was its density? Answer as
a number with three sig figs only. - ANSWER 19.3
Which of the objects in the custom section of the PhET density lab had a density of 2.00 in kg/L?
Enter your answer as one word. - ANSWER Brick
In the PhET Density lab, which of the following objects sunk in the custom section of the lab? -
ANSWER Brick
Looking at your data from the same mass and same volume section of the PhET lab, what must be
true about the density of
an object in order for it to float? - ANSWER It must have a density of 1
How does volume relate to density in the PhET density lab? - ANSWER larger volume,
lower density
According to your results from the PhET Density Lab, 2. How does the density of a large piece of
aluminum compare to a small piece? - ANSWER same density
According to the PhET Density lab, what was the density of the ice? - ANSWER 0.92
,According to the PhET Density Lab, what was the density of the green object in the same mass
section of the lab? - ANSWER 2
What is the correct scientific notation for 0.00050210? - ANSWER 5.0210 x 10 ^−4
What is the correct decimal representation of 1.201 x 10^-7 - ANSWER 0.0000001201
What is the correct number of significant figures in 865,000? - ANSWER 3
In the number 48.93, which digit is estimated? - ANSWER 3
What is the answer to the following equation with correct number of significant figures: (4.123 x
0.12) + 24.2= - ANSWER 24.7
What is the correct multiplier for the prefix micro? - ANSWER 10^-6
What is the standard SI unit for length? - ANSWER meter
How many inches are in 25.8 cm? - ANSWER 10.2
How many microliters are in 41.0 ml? - ANSWER 4.10 × 10^4
What is the density of 96 mL of a liquid that has a mass of 90.5 g? - ANSWER 0.94 g/mL
A block has is 2.2 cm x 3.0 cm x 1.5 cm and a mass of 12.4 grams. Will the block float in water
and why? - ANSWER No, because the density of the block is 1.3 g/mL which is greater
than the density of water.
How many liters are in 333 mL? Enter your answer as a number only. - ANSWER 0.333
, What is the density (g/mL) of an object that has a mass of 14.01 grams and when placed into a
graduated cylinder, causes the water level to rise from 25.2 mL to 33.6 mL? Enter your answer as
a number with correct sig figs only. - ANSWER 1.7
Given the density of Au is
19.3 g/cm^3 determine the mass of gold in an ingot with the dimensions of 10.0 in x 4.00 in x
3.00 in. Give your answer as a number with correct sig figs only. Do not use scientific notation. -
ANSWER 38000.0
An object weighing 1.840 kg has a volume of 0.0015 L , what is the density of the object in g/mL?
Express your answer as a number with correct sig figs only without scientific notation. - ANSWER
1200.0
Given the following list of densities, which materials would float in a molten vat of lead provided
that they do not themselves melt? Densities: g/mL: lead= 11.4; glass= 2.6, gold= 19.3, charcoal=
0.57, platinum = 21.4. Enter your answer as a word only. If two or more items would float include
the word and between those two items. - ANSWER glass and charcoal
How many low dose 81 mg aspirin tablets can be made from 1.21 kg of aspirin? Express your
answer as a number with correct sig figs only. Do not use scientific notation. - ANSWER
15000.0
A room has dimensions of 10.0 ft x 20.0 ft x 8.00 ft. What is the volume of the room in cubic yards
if 1 foot = 3 yards? Express your answer as a number only with correct sig figs. Do not use
scientific notation. - ANSWER 43200.0
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