Answer to Question #167157 in General Chemistry for Daayer

Question #167157

A plant requires approximately 5689 kcal for the production of 1.00 kg of starch from carbon dioxide and water.


Calculate the energy in kilocalories required by a plant for the production of 8.69 g of starch.

Energy=..........kcal




Please with the steps..


1
Expert's answer
2021-02-26T07:43:35-0500

1.00 kg should be converted to grams for units to be the same: 1.00 kg = 1000 g.

Then there is just a proportion:

5689 kcal - 1000 g of starch

x kcal - 8.69 g of starch


"x=\\frac{8.69g\\times5689kcal}{1000g}=49.4kcal"


Answer: 49.4 kcal


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