Home
Class 12
CHEMISTRY
The heat of combusion of glycogen is abo...

The heat of combusion of glycogen is about `476 kJ mol^(-1)` of carbon. Assume that average heat loss by an adult male is `150W`. If we were to assume that all the heat comes from oxidation of glycogen, how many units of glycogen `(1mol` carbon per unit) must be oxidised per day to provide for this heat loss?

A

29.6 units

B

27.22 units

C

25.9 units

D

21.8 units

Text Solution

Verified by Experts

The correct Answer is:
B
Total energy required in the day `= (150 xx 24 xx 60 xx 60)/(1000) kJ =12960 kJ [ :' "Watt" = J"sec"–1]`
Units of glycogen required = `(12960)/(476) = 27.22` units
Promotional Banner

Similar Questions

Explore conceptually related problems

The heat of combustion of ethane gas is -368 kcal mol^(-1) . Assuming that 60% of heat is useful, how many m^(3) of ethane measured at NTP must be burned to supply heat to convert 50 kg of water at 10^(@)C to steam at 100^(@)C ?

Enthalpy of combustion of carbon to CO_(2) is -393.5 kJ mol^(-1) . Calculate the heat released upon formation of 35.2 g of CO_(2) from carbon and dioxygen gas.

a. A cylinder of gas is assumed to contain 11.2 kg of butane. If a normal family needs 20000kJ of energy per day for cooking, how long will the cylinder last? Given that the heat of combustion of butane is 2658 kJ mol^(-1) . b. If the air supply of the burner is insufficient (i.e. you have a yellow instead of a blue flame), a portion of the gas escape without combustion. Assuming that 33% of the gas is wasted due to this inefficiency, how long would the cylinder last?