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An energy bar contains 4 g of fat, 12 g of protein, and 24 g of carbohydates. How many..
written 2.5 years ago by gravatar for kunalpathare1119 kunalpathare1119 • 260 modified 2.5 years ago by gravatar for Munna9493 Munna9493 • 100

An energy bar contains 4 g of fat, 12 g of protein, and 24 g of carbohydrates. How many kilojoules of energy are obtained from eating two bars per day for a month? Write the answer in scientific notation.
thermodynamics
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written 2.5 years ago by gravatar for Munna9493 Munna9493 • 100

Given, Mass of Fat = 4g (mf)

Mass of Protein = 12g (mp)

Mass of carbs = 24 g (mc)

First we need to determine energy obtained from eating an energy bar :

E = mf.ef + mp.ep + mc.ec

Where as ef = the energy of fats per unit …

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