A solid waste of composition $\mathrm{C}_{60} \mathrm{H}_{135} \mathrm{O}_{50} \mathrm{~N}_{5}$ is to be composted aerobically in a closed vessel mechanical composting facility. Given: all ammonia generated escapes the facility; air contains $23 \%$ of Oxygen by weight; $100 \%$ excess air requirement for the closed vessel composting facility. The atomic weights: $\mathrm{C}-12$, $\mathrm{H}-1, \mathrm{O}-16, \mathrm{~N}-14$. The actual air required for composting is $\_\_\_\_\_\_$ kg per kg waste. (rounded off to one decimal place).
