A $200ml$ of ethane $1$s

reacted with $5000$ mel of air

in combustion reactor. What

is the percent excess air is

used in the combustion

reactor?

$61\mathrm{.}42\%$

$50\mathrm{.}06\%$

$20\mathrm{.}48\%$

$33\mathrm{.}28\%$