Skip to main content

More Chemistry Questions



Do you live in NYC?
Is your home starting to look a bit messy and dirty?
Have it professionally cleaned by my company!
Check us out or refer us to someone you may know that may need our services.
nationalpremiercleaning.com
If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com  


1.
Which has the greater N–O bond length, NO2– or NO3–?

A)
NO2–

B)
NO3–

C)
The bond lengths are the same.

D)
More information is needed.

E)
None of these (A-D).


2.
Nitrous oxide (N2O, skeleton N-N-O) has three resonance structures. Based on an analysis of these three structures, including formal charges, the most likely N-N bond length is
Bond
average length
N-N
0.167 nm
N=N
0.120 nm
N≡N
0.110 nm

A)
0.110 nm

B)
0.112 nm

C)
0.120 nm

D)
0.136 nm

E)
0.167 nm


3.
The energy sequence of the molecular orbitals in OF is s2ss2s*s2pp2pp2p*s2p* . The cation OF1+ is predicted by simple molecular orbital theory to be __________ and _____________.

A)
unstable, diamagnetic

B)
unstable, paramagnetic

C)
stable, diamagnetic

D)
stable, paramagnetic


4.
The head-on, out of phase,  overlap of atomic p-orbitals in this fashion: yields the molecular orbital

A)
s

B)
s*

C)
p

D)
p*


5.
Consider a hypothetical molecule with the skeleton structure N-O-N.  In the most reasonable of the possible Lewis structures, the molecule has ______, and is likely to be ______.

A)
two double bonds, stable

B)
two double bonds, unstable

C)
a single bond and a triple bond, stable

D)
a single bond and a triple bond, unstable


6.
Which of the molecules below would you expect to have the highest boiling point?
 
        I                        II                         III                     IV
---------------------------------------------------------------------------------

A)
I

B)
II

C)
III

D)
IV

E)
II and IV


Use the following to answer questions 7-9:

Consider the molecule and the following hybridization choices:
                       H2N-N=CH-C≡CH
         atom #           1           2              3     


7.
What is the hybridization of the nitrogen atom that is single-bonded to nitrogen and two hydrogen atoms (#1)?

A)
sp

B)
sp2

C)
sp3

D)
dsp3

E)
d2sp3


8.
What is the hybridization of the carbon atom that is single bonded to hydrogen and triple bonded to carbon (#3)?

A)
sp

B)
sp2

C)
sp3

D)
dsp3

E)
d2sp3


9.
What is the hybridization of the carbon atom that is double bonded to nitrogen (#2)?

A)
sp

B)
sp2

C)
sp3

D)
dsp3

E)
d2sp3


10.
The energy sequence of the molecular orbitals in C2 is s2ss2s*p2ps2pp2p*s2p* .  The bond order for the C2-1 anion is

A)
0

B)
1

C)
1.5

D)
2

E)
2.5


Use the following to answer questions 11-12:

Draw the Lewis structures of the molecules below and use them to answer the following questions:
 I.
BH3
II.
NO2-1
III.
SF6
IV.
SO3
V.
PCl5



11.
Which of these molecules show resonance?

A)
I, II

B)
II, IV

C)
II, V

D)
III, IV

E)
III, V


12.
How many of the molecules have no dipole moment?

A)
1

B)
2

C)
3

D)
4

E)
They are all polar.


13.
In the molecular ion OF-1, the lone pair electrons on the fluorine are in

A)
p orbitals

B)
sp orbitals

C)
sp2 orbitals

D)
sp3 orbitals


14.
Which of the following ionic compounds has the smallest lattice energy (i.e., the lattice energy least favorable to a stable lattice)?

A)
LiF

B)
CsI

C)
NaCl

D)
BaO

E)
MgO


15.
The molecule H-N=N-H is __________ and the molecular cation H2N=O+ is _________.

A)
linear, planar

B)
planar, nonplanar

C)
nonplanar, planar

D)
planar, planar

E)
linear, nonplanar


16.
The in-phase sideways overlap of atomic p-orbitals leads to this molecular orbital:

A)
s

B)
s*

C)
p

D)
p*


17.
Consider the molecule ClF5.  The electronic geometry is __________ and the molecular geometry is __________.

A)
pentagonal, octahedral

B)
trigonal bipyramidal, trigonal bipyramidal

C)
octahedral, tetrahedral

D)
tetrahedral, trigonal pyramidal

E)
octahedral,  square pyramidal


18.
Which of the following has the smallest radius?

A)
F–

B)
Ne

C)
O2–

D)
Mg2+

E)
Na+


Do you live in NYC?
Is your home starting to look a bit messy and dirty?
Have it professionally cleaned by my company!
Check us out or refer us to someone you may know that may need our services.
nationalpremiercleaning.com
If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com  

Labels:

Popular posts from this blog

Setting The Stage For Learning About The Earth

If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com   (These Answers Should Be Used as a Basis For Yours) Exercise 1.1 Submergence Rate Along the Maine Coast The rate of submergence is the total change in elevation of the pier 2 meters divided by the total amount of time involved 300 years and is therefore .67 cm/yr Exercise 1.4  Sources of Heat for Earth Processes A. The sand should be hot since the sun has been heating up the sand throughout the day. i. When you dig your feet into the sand you should feel cooler sand since the sun's penetration into the earth is limited. ii. This suggests that the Sun can only penetrate into the Earth up until a certain depth. iii.Based on this conclusion, one can assume that the Sun is not responsible for the Earth's internal heat since, we have heat hundreds of kilometers within the Earth and thi...
Read more

The Romantics: John Keats and Samuel T. Coleridge

If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com   PART OF THIS ESSAY HAS BEEN  OMITTED  FOR FULL ESSAY COMMENT,EMAIL, LIKE, FOLLOW US                                    The Romantics: John Keats and Samuel T. Coleridge         The Romantic Period in England had six major poets, William Wordsworth, Lord Byron, Percy Shelley, William Blake, John Keats, and Samuel Coleridge. For the purpose of this essay, the focus will only be on Keats and Coleridge. Although they were contemporaries, they each have very different styles of writing as is evident in their poetry. In “This Lime Tree Bower My Prison” an exemplary e...
Read more

history outline

If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com   Preface   On page 10, the author suggests that the roots of western Eurasian dominance in the modern world lie in what?             On page10, the author suggests that the roots of western Eurasian dominance in the modern world lie in the preliterate past before 3,000 B.C.  By western  Eurasian dominance , the author means the dominance of western Eurasian societies themselves and of the societies that they spawned on other continents. Why has the author chosen to write this book in this style and manner?             In order to study western Eurasian societies the reader must also understand the differences among other societies.  As in th...
Read more