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Anika [276]
4 years ago
15

Need help asap got 5 minutes

Chemistry
1 answer:
mojhsa [17]4 years ago
4 0
The answer is A. Oxygen
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Which analogy can best be likened to the activation energy of a chemical reaction? a drain through which water flows a slide dow
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Using the fact that at 0.10 M, the absorbance was 0.357; and at 0.20 M, the absorbance was 0.714, the absorptivity (slope) is
olga_2 [115]

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Explanation:

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=\frac{n_2-n_1}{n_2-n_1}\\\\ =\frac{0.714-0.357}{0.20-0.10} \\\\ = ABSORPTIVITY, \ \ a=3.57 \\\\A= a\times b \times c

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A=0.250

length path b=1  

from calibration it is found that

a=3.57\\\\consentation \ c=\frac{A}{a\times b} \\\\C=\frac{0.250}{3.57\times 1}

   =0.07 \ M

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The concentration of a trace mineral is found to be 2.53 PPB in an aqueous solution. what volume of solution contains 2.53 g of
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