Answer the following questions. Show your work where requested. If you .simply provide an
answer without showing work, you will receive only 1 point
3) The correct scientific notation for the number 500.0 is:
rA) 5 x 102
B) 5.00 x 102
. C) 5.000 x 102
D) 5 x 10-2
E) none ofthe above
4) The correct m;II~;b~rof significant figures in the number 1.250100 is:
A) 5
B) 7 ,/
C) 4
D) ambiguous
E) none of the above
5) Determine the answer to the following equation with correct number of significant figures:
106 +9.02 x 1.9 =
_
D) 22
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A)
B)
C)
D
observation and measurement
formation of a hypothesis
testing of a hypothesis by experimentation
refinement of a hypothesis as needed
,-E) All of the above steps are part of the scientific me~
7) Convert 9.08 ounces to kilograms? (16 oz
for full credit
A) 1.25
B) 320
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C;, 0802
\
= 1 Ib; 1 kg = 2.20 Ibs) Show your work below
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3 cU 0' 5
8) Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot with the
dimensions of 25.4 cm x 10.2 cm x 7.62 cm. Show your work below for full credit
081
x
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B) 102
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C)2.32x 103
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E)noneoftheabove
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D) 0.'161
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9) A plastic block has dimensions of 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? (Density of water = 1.00 g/mL) Show your work below for
full credit
A) Yes, because the density of the block is 1.3 g/mL which is less than the density of water.
B Yes, because the density of the block is 0.80 g/mL which is less than the density of water.
C) 0, because the density of the block is 1.3 g/mL which is greater than the density of water.
) No, because the density of the block is 0.80 g/mL which is greater than the density of water.
E) none of the above
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10) Convert 2.41 mL to Lit~rs? Show your work below for full credit
A)
B)
C)
D)
E)
2.41
24.1
241
0.241
0.0241
\L
or
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