Can you further elaborate how to calculate n$?$ I can understand how to find other variables but I can't figure out what to do with $1\mathrm{.}7$ lbm and $\mathrm{.}044.$ The lower explosive limit of a gas is the lowest concentration of a gas that is capable of producing a

flash fire in the presence of an ignition source. This is also known as the lower flammable limit $($LFL$).$

For methane gas the LFL is $0\mathrm{.}044$ in mol fraction. You are told that $1\mathrm{.}7$lb$\_($m$)$ of methane has escaped

from a gas stove in a room that is $8$ft high, $10$ft wide and $15$ft long. Assume that the room is at

atmospheric pressure $(14\mathrm{.}7\backslash$psi $).$ Assuming ideal gas conditions, calculate the temperature required in

Celsius and Fahrenheit to reach the LFL in the roomc