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When Vernier readings (degree) were plotted on y-axis, and wavelengths of line-spectra (nm) for Hg-lamp were plotted on x-axis, the best-fit-line equation obtained from Excel was y = 0.204x + 131.5 Predict where (on the Vernier reading) you may find the faint purple line in Hg-lamp, which was very challenging to find in this lab.

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yemmy

Answer:

213.9°

Explanation:

The faint purple line in Hg-lamp falls around 404 nm.

Corresponding Vernier reading based on the best fit line equation is given by substituting for 404 nm for x in the above equation

y = 0.204(404) + 131.5

= 213.9 degrees