If a chocolate bar has 270 Calories from fat, does this mean the chocolate bar has 15 or 30. grams of fat? Explain.
2 answers:
<u>Answer:</u>
<em>The chocolate bar has 30 grams of fat, if it has 270 fat calories. </em>
<u>Explanation:</u>
Nourishment calories are characterized as the measure of warmth vitality required to raise the temperature of one kilogram of water by one degree Celsius.
The micro nutrients in our nourishment like proteins, fats and starches has their particular commitment to the absolute nourishment calorie which was taken by the human.
It is realized that every gram of fat adds to 9 calories in any nourishment thing.
1 g of Fat= 9 fat calories
1 fat calories= 19 g of fat
270 fat calories= of fat = 30 g of fat
Thus 270 fat calories will contain 30 g of fat in it.
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Explanation:
The reaction equation will be as follows.
Hence, moles of Na = moles of electron used
Therefore, calculate the number of moles of sodium as follows.
No. of moles =
= (as 1 kg = 1000 g)
= 195.65 mol
As, Q = where F = Faraday's constant
=
= mol C
Relation between electrical energy and Q is as follows.
E =
Hence, putting the given values into the above formula and then calculate the value of electricity as follows.
E =
=
=
As 1 J = kWh
Hence, kWh
= 3.39 kWh
Thus, we can conclude that 3.39 kilowatt-hours of electricity is required in the given situation.