Order the following bonds according to polarity: H-H; S-H; F-H;
O-H; Cl-H
For each of the following molecules show the direction of the
bond polarities: HCl; Cl2; SO3; CH4; H2S
The atomic radius of an oxygen atom is 73 pm, and the ionic
radius of the ion O2− is 140 pm. Explain the relative radii by
estimating Zeff for each of these species.
An ionic compound formed by a cation of radius 120pm and an
anion radius 230pm will probably form a: (hint: calculate the
difference in radius of cation and anion, compare to the examples
in the "Course Materials")
A.
rock salt structure
B.
zinc-blende structure
C.
cesium chloride structure
D.
fluorite structure
What is the rms velocity of H2O at
25oC?
A.
482 m/s
B.
20.3 m/s
C.
643 m/s
50 ml of O2 is collected over water at 1.20 atm...
Which of the following bonds are polar: C-Se, C-O, Cl-Cl, O=O,
N-H, C-H? In the bond or bonds that you selected, which atom has
the greater electronegativity?
Which pair(s) is/are listed in order of increasing bond energy?
I: F−F < Cl−Cl < Br−Br II: H−N < H−O < H−F III: C−O
< C=O < C≡O A) I only B) II only C) I and III D) II and III
E) I, II, and III
Let f(t)=5t2−t.
a) Find f(t+h):
b) Find f(t+h)−f(t):
c) Find f(t+h)−f(t)/h: side note: (f(t+h)=f(t) is on top of
fraction and h is on bottom)
d) Find f′(t):
pls circle the 4 answers