Question

Perform the conversions between energy units.
2185 kcal
7.29×106

Answer 1

$1 \ Kcal=4184 \ joules.$

$1 \ J=\frac{1}{4184}\ KCal$

$2185 \ KCal=2185 \times 4184\ J=9,142,040\ J\approx9.142\times 10^{6} \ J$

$7.29 \times 10^6J=\frac{7.29\times 10^6}{4184} \ KCal=1.742 \times10^3 KCal$