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sdas [7]
2 years ago
7

How does light interact with materials

Chemistry
1 answer:
Ainat [17]2 years ago
6 0

Answer:

ok I got the right answer

HAVE A NICE DAY GOOD MORNING

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3 years ago
The gram-formula mass of NO2 is defined as the mass of
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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)
blsea [12.9K]
<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^{-}

 and we know, pH = -log[H+] and pOH = -log[OH-]

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]}

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                    =0.00516 M 

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6 0
3 years ago
Is it always easy to classify research as applied or pure? Explain.
Luda [366]

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