Raw potatoes are composed of about 18%-20% starch and approximately 75% water. Before frying, raw

potatoes are peeled and then washed. Assume that 8% by weight of the raw potatoes is lost in the peeling.

Potatoes are then dried to 7% total water content. What is the mass of dried potatoes produced from

each 100 kg of raw potatoes?

Question

Chemistry

Guest

21 February, 17:44

Raw potatoes are composed of about 18%-20% starch and approximately 75% water. Before frying, raw

potatoes are peeled and then washed. Assume that 8% by weight of the raw potatoes is lost in the peeling.

Potatoes are then dried to 7% total water content. What is the mass of dried potatoes produced from

each 100 kg of raw potatoes?

+1

Answers (1)

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Luz Hood · Answer 1

You start with 100 kg raw potatoes.

8% of mass is lost by peeling:

100 - (8 / 100) * 100 = 92 kg of peeled raw potatoes

By drying the water contents is reduces from 75% to 7%, that means a 68% loss by weight:

92 - (68 / 100) * 92 = 92 - 62.56 = 29.44 kg of dried potatoes