Answer: There are 32400 moles of propane burned.
Explanation:
To calculate the mass of propane, we use the equation:
[tex]\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}[/tex]
Density of propane = [tex]4.2lb/gal[/tex]
Volume of propane = 750 gal
Putting values in above equation, we get:
[tex]4.2lb/gal=\frac{\text{Mass of propane}}{750gal}\\\\\text{Mass of propane}=(4.2lb/gal\times 750gal)=3150lb=1428840g[/tex] (1 lb=453.6 g[/tex]
According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{1428840g}{44.1g/mol}=32400moles[/tex]
Thus there are 32400 moles of propane burned.
