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bearhunter [10]
3 years ago
5

PLEASE HELP NEED ANSWER FAST

Chemistry
1 answer:
Lady_Fox [76]3 years ago
3 0

Answer:

communicate the important work you have done in lab

Explanation:

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What is crucial in the formation of metamorphic rock?
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Answer: Heat\pressure control

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What is the dielectric constant of hexane? and the dipole?
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The dielectric constant of hexane is 1.88 at 25 °C. Its dipole moment is 0.08 D.

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A 0.175 m weak acid acid solution has ph of 3.25 find ka for the acid
Elenna [48]
The acid dissociation constant or Ka is a value used to measure the strength of a specific acid in solution. For a general dissociation of an acid solution,

HA = H+ + A-

we express Ka as follows:

Ka = [H+] [A-] / [HA]

Where the terms represents the concentrations of the acid and the ions. Assuming that the weak acid in the problem is HA, we first calculate for the concentration of H+ from the pH.

pH = - log [H+]
3.25 = - log [H+]
[H+] = 0.0005623 M

By the ICE table, we can calculate the equilibrium concentrations,
        HA      =      H+            +        A-
I      0.175           0                         0
C      -x               +x                      +x
 --------------------------------------------------
E  .174438    0.0005623       0.0005623

Ka = (0.0005623) (0.0005623) / .174438
Ka = 1.81x10^-6
8 0
3 years ago
What evidence supports a scientist's conclusion that fossil B is older than fossil A? (4 points)
Hoochie [10]

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I am not sure but that's the right one I think. If I am wrong then I am sorry
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