Home
Class 12
CHEMISTRY
An athlete is given 100 g of glucose (C6...

An athlete is given 100 g of glucose (`C_6H_12O_6`) of energy equivalent to 1560 kJ. He utilises 50% of this gained energy in the event. In order to avoid the storage of energy in the body, calculate the weight of water he would need to perspire. The enthalpy of evaporation of water is `44 kJ mol^(-1)`.

Text Solution

Verified by Experts

Moles of `H_(2)O` needs to perspire = `(1560)/(2 xx 44) = 17.72`
Weight of water needs to perspire `= 17.72 xx 18 = 318.96 g`
Promotional Banner

Topper's Solved these Questions

  • THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE MAIN (ARCHIVE)|20 Videos
  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|31 Videos
  • THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE)|44 Videos

Similar Questions

Explore conceptually related problems

An athelete is given 100g of glucose (C_(6)H_(12)O_(6)) of energy equivalent to 1560 kJ . He utilises 50% of this gained enegry in the event. In order to avoid storage of enegry in the body, calculate the weight of water he would need to perspire. The enthalpy of evaporation of water is 441kJ//mol .

An athlete is given 180 g of glucose (C_(6)H_(12)O_(6)) . He utilises 50% of the energy due to internal combustion in the body. In order to avoid storage of energy in the body, calculate the masss of water he would need to perspire. Given enthalpy of combustion of glucose is -2800 kJ mol^(-1) and enthalpy of evaporation of water is 44 kJ mol^(-1)

An athlete is given 180 g of glucose (C_(6)H_(12)O_(6)) . He utilises 50% of the energy due to internal combustion in the body. In order to avoid storage of energy in the body, calculate the masss of water he would need to perspire. Given enthalpy of combustion of glucose is -2800 kJ mol^(-1) and enthalpy of evaporation of water is 44 kJ mol^(-1)

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

Calculate the entropy change when 3.6g of liquid water is completely converted into vapour at 100^(@)C . The molar heat of vaporization is 40.85KJ mol^(-1) .

18g of water is taken to prepare the tea. Find out the internal energy of vaporisation at 100^(@) C. (Delta_(vap)H for water at 373 K is 40.66kJ mol^(-1))

A swimmer coming out from a pool is covered with a film of water weighing about 80g . How much heat must be supplied to evaporate this water ? If latent heat of evaporation for H_(2)O is 40.79 kJ mol^(-1) at 100^(@)C .

A swimmer coming out from a pool is covered with a film of water weighing about 80g . How much heat must be supplied to evaporate this water ? If latent heat of evaporation for H_(2)O is 40.79 kJ mol^(-1) at 100^(@)C .

90 g of water spilled out from a vessel in the room on the floor. Assuming that water vapour behaving as an ideal gas, calculate the internal energy change when the spilled water undergoes complete evaporation at 100^(@)C . (Given the molar enthalpy of vaporisation of water at 1 bar and 373 K = 41 kJ mol^(-1) ).

90 g of water spilled out from a vessel in the room on the floor. Assuming that water vapour behaving as an ideal gas, calculate the internal energy change when the spilled water undergoes complete evaporation at 100^(@)C . (Given the molar enthalpy of vaporisation of water at 1 bar and 373 K = 41 kJ mol^(-1) ).

VMC MODULES ENGLISH-THERMOCHEMISTRY-JEE ADVANCED (ARCHIVE)
  1. The standard molar heat of formation of ethane, CO(2) and water are re...

    Text Solution

    |

  2. An intimate mixture of ferric oxide, Fe(2)O(3), and aluminium is used ...

    Text Solution

    |

  3. An athlete is given 100 g of glucose (C6H12O6) of energy equivalent to...

    Text Solution

    |

  4. The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene...

    Text Solution

    |

  5. Using the data given below (all values are kilories per mol at 25^(@)C...

    Text Solution

    |

  6. A gas mixture of 3.67L of ethylene and methane on complete combustion ...

    Text Solution

    |

  7. Determine the enthalpy of the reaction C(3)H(8)(g)+H(2)(g) rarr C(2)H(...

    Text Solution

    |

  8. In an endothermic reaction, the total enthalpy of reactant is………………tha...

    Text Solution

    |

  9. The polymerisation of ethylene to linear polyethylene is represented b...

    Text Solution

    |

  10. In order to get maximum calorific output a burner should have an optim...

    Text Solution

    |

  11. The standard molar enthalpies of formation of cyclohexane (I) and benz...

    Text Solution

    |

  12. Compute the heat of formation of liquid methyl alcohol in kilojoule pe...

    Text Solution

    |

  13. From the following data, calculate the enthalpy change for the combust...

    Text Solution

    |

  14. Diborane is a potential rocket fuel that undergoes combustion accordin...

    Text Solution

    |

  15. The Delta(f)H^(Theta) for CO(2)(g), CO(g), and H(2)O(g) are -393.5, -1...

    Text Solution

    |

  16. Which of the following reactions will define DeltaH(f)^(@) ?

    Text Solution

    |

  17. The heats of combustion of carbon and carbon monoxide are -393.5 and ...

    Text Solution

    |

  18. For the reaction 2CO +O(2) rarr 2CO(2), DeltaH =- 560 kJ, 2mol of ...

    Text Solution

    |

  19. In a constant volume calorimeter, 3.5 g of a gas with molecular weight...

    Text Solution

    |

  20. The species which by definition has zero standard molar enthalpy of fo...

    Text Solution

    |