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CHEM 1100 FINAL QUESTIONS WITH CORRECT DETAILED ANSWERS 2024
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CHEM 1100 FINAL QUESTIONS WITH CORRECT DETAILED ANSWERS 2024
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CHEM 1100 FINAL QUESTIONS WITHCORRECT DETAILED ANSWERS 2024
Complete combustion of hydrcarbon fuels produces ____ and requires ____ oxygen
than incomplete combustion of the same fuels - ANSWER- CO2; more
PM 2.5 is _____ and causes ___ health problems that PM 10. - ANSWER- smaller;
more
which substance is a greenhouse gas and a secondary pollutant - ANSWER- O3
compounds are to elements as __ are to __- - ANSWER- words are letters
which substance is correctly matched with its category? - ANSWER- Ozone, O3,
element
circle the differences between a neutral atom of U-235 and a neutral atom of U-238. -
ANSWER- U-238 atom has more neutrons
U-238 atoms weights more
they have a different number of neutrons becuase they are isotopes which affects their
atomic weight
draw lewis structure and 3d structure of CH3CN - ANSWER- number 7 of first exam
respond to the headline: Greenhouse effect poses threat to life on earth - ANSWER- i
think your statement was too vague. Not yet, hace the greenhouse gas levels
threatened life on earth. I think a more suitable headline would be "If the levels of
greenhouse gases continue to climb, what will our future be like?" or you could talk
about how the greenhouse gasses correlate with the increasing rise in temperature.
Argon (Ar) comprises almost 1% of the atmosphere. I know of only one compound
containing Ar, and it is unstable above -256 degrees C! Why is argon so unreactive? -
ANSWER- Argon is so unreactive because it is in the right most group on the periodic
table making it a Noble gas. Noble gases have all 8 valence electrons which make them
very stable
Argon is approximately 27 times more abundant than CO2, but does not contribute to
the greenhouse effect. Offer a brief explaination to account for this fact - ANSWER- If
Argon does not (typically) react to form compounds them argon atoms are physically
unable to vibrate and absorb heat emitted like the greenhouse gases. For example, and
argon atom could not do an asymmetric stretch if there is nothing bonded to it.
, Balance the equation:
NbCl5 + H2O = HNbO3 + HCl - ANSWER- NbCl5 + 3H2O = HNbO3 + 5HCl
name NbCl5 - ANSWER- Niobium pentachloride
Use the words (sunlight, O3, CO, NO2, NO, and VOC) to fill in the blanks. one used
twice, and another not at all.
automobiles and trucks emit _______ and ________ which will eventually make smog.
These two species, through a series of reactions that include the hydroxyl radical,
eventually make ________, a brownish gas. _________ then acts upon that brownish
gas, to eventually form ________. That species then reacts with more _______to
produce smog. - ANSWER- -VOC
-NO
-NO2
-Sunlight
-O3
-VOC
the MU power plant emits about 910,000 grams of CO2 per day (on average). How
many pounds of CO2 does our power plant emit in a year? (hint 1.0 lb. = 454 grams) -
ANSWER- 731,607.93 pounds / 1 year
number 13 on first exam
A certain bottled water company advertises that its water has been treated so that there
are "clusters" of water molecules that can more effectively penetrate through cell walls
to maximize hydration. (pic of all of the O's facing in) why is the arrangement unlikely? -
ANSWER- oxygen atoms in all water molecules have the same partial charge, and like
charges repel.
Making chemical bonds _____ energy - ANSWER- releases
and the opposite, breaking chemical bonds costs energy
Over the past 20 years, CO2 emissions from fossil fuel combustion have totaled about
120 billion tons. However, only about 80 billion tons have accumulated in the
atmosphere. The best explanation for this observation is.... - ANSWER- The oceans
have absorbed about one-third of the emitted CO2
Which compound is most ionic?
KCl
Cl2
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