$($a$)(10$ points$)$ Estimate the LFL and UFL for acetone and compare the estimated value

with tabulated experimental values.

$($b$)(10$ points$)$ Determine the LFL and UFL of a gaseous mixture of $0\mathrm{.}65$vol$\%$ acetone,

$0\mathrm{.}2$vol$\%$ decane and $0\mathrm{.}3$vol$\%$ hexane.