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CHEM2A
Game Code: 1016394
English
8
Public
Final Review #3
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mtanizawa
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#Chemistry
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Which choice best describes the degree of uncertainty in the measurement 4.0032 g?
The measurement is between 4.0031 and 4.0033 g.
The measurement is between 4.002 and 4.004 g.
The measurement is between 3.99 and 4.01 g.
The quantity is exact.
15
What temperature is -10°C on the Fahrenheit scale?
14°F
-18°F
26°F
263°F
15
How many calories are released when 500 g of water cools from 95.0°C to 25.0°C?
70.0 cal
4.75 × 10^4 cal
1.25 × 10^4 cal
3.50 × 10^4 cal
15
Another name for atomic mass unit (amu) is the _______
mendeleev.
avogadro.
dalton.
kekule.
15
The smallest amount of an element that retains that element's characteristics is the _____
proton.
electron.
atom.
molecule.
15
For the isotope 71Ga, Z = __ and A =__.
31; 40
71; 31
71; 40
31; 71
15
What is the formula of a compound formed by the ions M^2+ and X^3-?
M2X3
M2X
M3X2
MX3
15
An atom with 3 valence electrons will most likely ________
gain five electrons.
lost five electrons.
gain three electrons.
lose three electrons.
15
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