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gregori [183]
2 years ago
5

What is the concentration (in m) of a sample of the unknown dye with an absorbance of 0. 25 at 542 nm?.

SAT
1 answer:
Firlakuza [10]2 years ago
3 0

The concentration of the dye at the absorbance of 0.25 = 1.76x10⁻⁵M

<h3 /><h3>The regression equation says</h3>

y = 15200x - 0.018

with y = 0.25

y is the absorbance and x is the concentration

We have to put in the value of y to get the concentration x

y = 15200x - 0.018

0.25 = 15200x - 0.018

0.25+0.018 =  15200x

0.268 = 15200x

x = 0.268/15200

= 1.76x10⁻⁵M

The concentration of the dye at the absorbance of 0.25 = 1.76x10⁻⁵M

Read more on this question here:

brainly.com/question/15892019

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Answer:

The solution is more acidic and is closer to become neutral.

Explanation:

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Alkaline level: 8 - 14

From this, we can see that the given solution went from a higher alkaline concentration level to a lower one.

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2 years ago
6-2 skills practice inverse functions and relations
xenn [34]

There are a lot of  inverse functions and relations. An example of this 6-2 skills math is find the inverse of  the following relations {(3, 1), (4, -3), (8, -3)}.

<h3>What is inverse functions?</h3>

The term inverse function connote a type of function (f) that is also a function that often undoes a form of operation of (f).

The inverse of the relations. {(3, 1), (4, -3), (8, -3)} is therefore

{(1, 3), (-3, 4), (-3, 8)} .

It is {(1, 3), (-3, 4), (-3, 8)}  because one just have to change the arrangement.

Learn more about  inverse functions from

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1 year ago
Does the residual plot show that the line of best fit is appropriate for the data? yes, the points have no pattern. no, the poin
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The graph is not found here, but a residual plot shows that the line of best fit is appropriate for data when points are well distributed on the x-axis.

<h3>What is a residual plot?</h3>

A residual plot is a diagram showing residual values on the Y-axis and an independent variable on the X-axis.

This type of plot (residual plot) is used to see the matches between observed and fitted response values.

In conclusion, the graph is not found here, but a residual plot shows that the line of best fit is appropriate for data when points are well distributed on the x-axis.

Learn more on residual plots here:

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#SPJ1

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Answer:

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Explanation:

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3 years ago
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