If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.
<span>2.28 kg x 213 kJ/kg = 486 kJ = 4.86E+05 J</span>
300cm cubed ( have a great night! )
