The ability of an atom in a molecule to attract electrons is best
quantified by the __________.
a. paramagnetism
b. diamagnetism
c. electronegativity
d. electron change-to-mass ratio
e. first ionization potential - C. electronegativity
In the Lewis structure of ClF, the formal charge on Cl is ______ and the formal charge on F is _____.
a. -1, -1
b. 0, 0
c. 0, -1
d. +1, -1
e. -1, +1 - B. 0, 0
Which of the following has the most negative electron affinity?
a. Be
b. N
c. C
d. Br
e. Cs - D. Br
A sample of oxygen gas was found to
, effuse at a rate equal to three times that of an unknown gas. The molecular weight of the unknown gas
is __________ g/mole.
a. 288
b. 96
c. 55
d. 4
e. 10.7 - A. 288
What is the molarity of permanganate ion in a 0.030 M solution of ferric permanganate?
a. 0.010 M
b. 0.015 M
c. 0.030 M
d. 0.060 M
e. 0.090 M - E. 0.090 M
If the volume of a cylinder-piston arrangement containing a gas is
increased by a factor of eight and the temperature is doubled, the pressure inside the piston will
________ by a factor of ________ .
a. decrease, 2
b. increase, 2
c. decrease, 4
d. increase, 8
e. decrease, 8 - c: decrease, 4
An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
a. have no attraction for one another
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