True or False Chemistry Questions. 10 pts to correct answer!

[From: ] [author: ] [Date: 11-12-02] [Hit: ]

D Yes78.09% nitrogen, 20.95% oxygen, 0.93% argon,......

I: True - They are very stable compounds and are able to persist for significant amounts of time, allowing them to diffuse into the stratosphere,where they undergo UV induced homolytic cleavage of the C-Cl bond, causing free radical centre formation that can easily react with ozone.

J: True.

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A. True
B. False
C. False
D. True
E False
F.False
G. All gases at one mole are 22.4L, this though is False
H. False
I. Not sure
J. True

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A true the concentration is changing

B yes it will form into H2CO3 which is an acid (Carbonic acid = acid rain) H20 + CO2 -----> H2CO3

C yes pH means power of H... How much H per million parts of the solution log something.

D Yes 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. oxygen is second richest. <>

E no.. the Gamma radiation is does not contain any protons or neutron so the atomic number and mass do not change...

F False... all of the immediate products are radioactive until it eventually gets to lead after X million years

G No if it was 10mol it would be one mole of any gas is 22.41 L at STP (standard temperature and pressure)

H False in two half-lives the 75% of it is gone on average as first half life it goes down to 50% then the second the remaining 50% halves therefor only 25% remaining...

I Yes CFC's i read it in my yr 12 textbook....

J Yes they may leak into the water system causing pollution

Hope it helps =)

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