Question

An athlete takes 100g of glucose of energy equivalent to 1560kJ. How much amount of energy is uptake by 1g molecule of glucose

Answer 1

100g of glucose gives 1560kJ
Question asks 1g-molecule of glucose which means 1 mole
So 180 g of glucose will give=180X1560/100=2808KJ

Answer 2

The amount of energy is 2808 KJ

Given:

The amount of glucose taken by athlete = 100 gm

Amount of energy given by 100 gm of glucose = 1560 KJ

Solution:

1 g molecule of glucose means 1 mole of glucose. 1 mole is equivalent to the number of atoms present in one molecule of glucose. We know that the mass of 1 mole of glucose is 180 gm.

So, if 100 gm of glucose gives 1560 KJ of energy

1 gm of glucose gives, $\frac{1560}{100} KJ$ of energy

The energy from 180 gm of glucose is given below:

$Energy =\left(\frac{1560}{100}\right) \times 180 K J$

$= 15.60 \times 180 \ KJ$

$Energy = 2808 \ KJ$