A closed system consists of 0.5 lbmol of liquid water and occupies a volume of 0.145ft^3. Determine the weight of the system, in lbf, and the average density, in lb/ft^3, at a location where the acceleration of gravity is g=30.5ft/s^2

A closed system consists of 0.5 lbmol of liquid water and occupies a volume of 0.145ft^3. Determine the weight of the system, in lbf, and the average density, in lb/ft^3, at a location where the acceleration of gravity is g=30.5ft/s^2

asked 2021-02-14
A closed system consists of 0.5 lbmol of liquid water and occupies a volume of \(\displaystyle{0.145}{f}{t}^{{3}}\). Determine the weight of the system, in lbf, and the average density, in \(\displaystyle{l}\frac{{b}}{{f}}{t}^{{3}}\), at a location where the acceleration of gravity is \(\displaystyle{g}={30.5}{f}\frac{{t}}{{s}^{{2}}}\)

Answers (1)

Weight, \(\displaystyle{W}={m}{g}={0.5}{l}{b}{m}\times{30.5}{f}\frac{{t}}{{s}^{{2}}}\times{\left({l}{b}{f}\frac{{s}^{{2}}}{{32.174}}{l}{b}{m}{f}{t}\right)}\)
To find weight from the above
density \(\displaystyle\rho={\frac{{{m}}}{{{V}}}}={\frac{{{\frac{{{0.5}}}{{{32.174}}}}}}{{{0.145}}}}\)
then find density

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