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
NN
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  

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 this can not be exp

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 example of a conversation poem, the reader is able to see Coleridge’s thought process of how he realizes nature is everywhere around oneself, as long as all “facult[ies] of sense and…the heart [are] awake to Love and Beauty”.

O captain my captain and do not go gentle into that good night

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   In Walt Whitman’s “O Captain! My Captain!” and in Dylan Thomas’ “Do Not Go Gentle Into That Good Night”, the reader is presented with two venerable characters of different backgrounds; both which have deep admiration for the poem’s character. With the authors use of diction, figurative language and tone, the reader is able to see just how much some people have an effect on others and what their death brings upon the author and the reader’s mind. In Whitman’s poem, the reader is able to see the heavy use of metaphors throughout the poem.  Whitman’s entire poem is a metaphor. “Captain” is the metaphor for Abraham Lincoln, but on a first reading or without the footnote that is provided, this poem would be very ambiguous. The author’s tone throughout is very prideful and full of admiration towards the President. He