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15
×
Which choice best describes the degree of uncertainty in the measurement 4.0032 g?
The quantity is exact.
The measurement is between 3.99 and 4.01 g.
The measurement is between 4.0031 and 4.0033 g.
The measurement is between 4.002 and 4.004 g.
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thief
Give points!
5
10
15
20
25
×
rocket
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rocket
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banana
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15
×
Another name for atomic mass unit (amu) is the _______
mendeleev.
dalton.
avogadro.
kekule.
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15
×
What temperature is -10°C on the Fahrenheit scale?
-18°F
14°F
26°F
263°F
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15
×
How many calories are released when 500 g of water cools from 95.0°C to 25.0°C?
4.75 Ã 10^4 cal
1.25 Ã 10^4 cal
3.50 Ã 10^4 cal
70.0 cal
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15
×
For the isotope 71Ga, Z = __ and A =__.
31; 71
71; 40
71; 31
31; 40
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banana
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rocket
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shark
Other team loses 25 points!
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baam
Lose 10 points!
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15
×
What is the formula of a compound formed by the ions M^2+ and X^3-?
M3X2
M2X3
MX3
M2X
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15
×
An atom with 3 valence electrons will most likely ________
lose three electrons.
gain three electrons.
gain five electrons.
lost five electrons.
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15
×
The smallest amount of an element that retains that element's characteristics is the _____
molecule.
atom.
proton.
electron.
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