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Volgvan
3 years ago
8

The chart seen here shows the decay of a sample of carbon-14 over a period of 33,000 years. What is the approximate half-life of

carbon 14?
Chemistry
2 answers:
madreJ [45]3 years ago
7 0
A. 5,500 years is the answer to this question
Nadusha1986 [10]3 years ago
5 0

5,500 ears if u using usatestprep

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What is the pH of a 0.050 M triethylamine, (C2H5)3N, solution? Kb for triethylamine is 5.3 ´ 10-4. Question options: 1) 11.69 2)
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<span>the pH of a 0.050 M triethylamine, is 11.70
</span>
For triehtylamine, (C_{2}H_{5})_{3}N, the reaction will be
(C_{2}H_{5})_{3}N + H_{2}O ---\ \textgreater \ ( C_{2}H_{5})_{3}NH^{+} + OH^{-}

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Also, pOH + pH = 14

Now, the Kb value  = 5.3 x 10^-4

And kb =  \frac{( [( C_{2}H_{5})_{3}NH^{+} ]*  OH^{-} )}{[( C_{2}H_{5})_{3}N]}

 thus, [OH-] =(5.3 ^ 10-4) ^2 / 0.050

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Thus, pOH = 2.30 
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3 years ago
Please help me due tomorrow
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