3 years ago

Which table has a constant of proportionality between 7 and x of 1/4? Choices are in the image

Mathematics

1 answer:

jolli1 [7]3 years ago

3 0

Answer:

A. has a constant proportion of 1/4.

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3 years ago

A mixture of compounds X and Y in a 0.100-cm cell had an absorbance of 0.215 at 272 nm and 0.191 at 327 nm. Find [X] and [Y] in

Oksi-84 [34.3K]

Answer: The concentration of X is $7.13582\times 10^{-6}$ and the concentration of Y is $2.53159\times 10^{-5}$ .

Step-by-step explanation:

Since we have given that

At 272 nm, absorbance = 0.215

At 327 nm, absorbance = 0.191

As we have given that

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So, our equations becomes

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By solving these two equations, we get that

$C_1=7.13582\times 10^{-6}\\\\C_2=2.53159\times 10^{-5}$

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4 years ago