Answer:
Energy Density: 129.412 [tex]\frac{Wh}{kg}[/tex]
Explanation:
First of all, let's convert the battery weighing from pounds to kilograms:
0.525 lb x [tex](\frac{0.454 kg}{1 lb})[/tex] = 0.238 kg
Now let's convert the electrical energy from kcal to Wh:
30.8 kcal x [tex](\frac{1 Wh}{1 kcal})[/tex] = 30.8 Wh
Now we can calculate energy density as follows:
Energy Density = [tex]\frac{30.8}{0.238}[/tex]
Energy Density = 129.412 [tex]\frac{Wh}{kg}[/tex]
