Convert the following to the desired units, given that $\backslash$rho air $=1\mathrm{.}2$ kg$/$m$3$

; MWair

$=29$ g$/$gmol; the density of water at $4$ oC is $1000$ kg$/$m$3$ and g $=32\mathrm{.}174$ ft$/$s$2$

:

$($i$)2\mathrm{.}7$ N$/$m$2$

to lbf$/$ft$2$

$($at the surface of the earth$)$

$($ii$)1\mathrm{.}52$ J to Btu

$($iii$)24$ g$/$L to lbm$/$ft$3$

$($iv$)30$ gmol NaCl to lbmol

$($v$)$ sp$.$ gr$.$ CH$4($g$)=0\mathrm{.}5537(20$oC$/4$oC$)$ to lbm$/$ft$3$