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kotegsom [21]
3 years ago
10

You hold two magnets together, end to end, and then let go. If the magnets stay together, the magnets are being _____.

Chemistry
2 answers:
Aleksandr-060686 [28]3 years ago
5 0

Answer:

C-attracted.

Explanation:

When two magnets stay together they are being attracted. If they are pushing each other away, they are being repelled.

choli [55]3 years ago
3 0

Answer:

C. Attracted

Explanation:

magnets have magnetic properties that allows them to be attracted to each other.when two magnets are put together and they stay together , it’s said that both magnets are attracted .

But in a situation whereby the magnets when brought close do not stay , it means that the magnets repel each other. This could be as a result of either of the magnets losing it's magnetic properties.

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Find the percent ionization of a 0.337 m hf solution. the ka for hf is 3.5 x 10-4. 1.1 % 1.2 x 10-2 % 3.2 % 3.5 x 10-2 % 4.7 %
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To determine the percent ionization of the acid given, we make use of the acid equilibrium constant (Ka) given. It is the ration of the equilibrium concentrations of the dissociated ions and the acid. The dissociation reaction of the HF acid would be as follows:<span>

HF = H+ + F-

The acid equilibrum constant would be expressed as follows:

Ka = [H+][F-] / [HF] = 3.5 x 10-4

To determine the equilibrium concentrations we use the ICE table,
         HF             H+              F-
I      0.337           0                 0
C      -x              +x               +x
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E    0.337-x        x                   x 

3.5 x 10-4 = [H+][F-] / [HF] 
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Solving for x,

x = 0.01069 = [H+] = [F-]

percent ionization = 0.01069 / 0.337 x 100  = 3.17%

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14.048 moles I believe.

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