Question

The hourly energy requirements of an astronaut can be satisfied by the energy released when 34 grams of sucrose are “burnt” in his body. How many grams of oxygen would be needed to be carried in a space capsule to meet his requirement for one day?

Answer 1

34 g of sucrose provides energy for an hour.

Hence, 

For a day, 

The mass of sucrose needed = 34 × 24 

= 816g

The balanced equation is,

Thus, 

342 g of sucrose requires 384 g of oxygen.

∴ 816 g of sucrose will require = \(\frac{816}{342}\times 384\) 

= 916 g of O₂

∴ Astronaut needs to carry 916 g of O₂.