Respuesta :

1 cg = 10^-5 kg
8.25 * 10^2 cg = 8.25 * 10^-3 kg

10^-12 kg = 1 nanogram
8.25 * 10^-3 kg = 8.25 * 10^9 nanograms

Therefore, 8.25 * 10^2 cg = 8.25 * 10^9 nanograms.