Question

Calculate the area beneath peak A. Assume each grid square is 1 cm × 1 cm.

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Answer #1

area under the peak = peak height * width at the half height

Height of the peak = 8 squares = 8 cm

width at the half height = 1.1 cm (from the graph)

area = 8 cm * 1.1 cm = 8.8 cm^2

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Answer #2

The area under a gas-chromatograph peak is proportional to the amount (moles) of compound eluted Approximate area = hxwl h i

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