Question

when 1 mol of glucose is burned, 2802.5kj of energy is released. calculate rhe quantity of energy released to a person by eating 5.00g of glucose in a candy

Answer 1

77.78 kJ of energy is released when 1 mol of glucose is burned, 2802.5 kJ of energy is released.

What are moles?

A mole is defined as 6.02214076 ×$10^{23}$ of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Calculate the moles of 5.00g of glucose.

Given mass = 5.00g

The molar mass of glucose = 180.156 g/mol

$Moles = \frac{mass}{molar \;mass}$

$Moles = \frac{5.00g}{180.156 g/mol}$

Moles =0.02775372455

The quantity of energy released to a person by eating 5.00g of glucose in a candy.

0.02775372455 x 2802.5 kJ

77.77981305 kJ =77.78 kJ

Hence, 777.78 kJ of energy is released.

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