We are given the following equation:
y = y0 e^-0.0001216 t
where y = 1/5 y0, y0 is the original amount
So solving for time t:
1/5 y0= y0 e^-0.0001216 t
t = 13,235.51 years
So the human died about 13235.5 years ago
Answer: Boiling because it makes the molecules in water bounce around.
Hope it helps.
D = m / V
d = 1300 g / 743 cm³
d = 1.749 g/cm³
1s2,2s2.2p6,3s2,3p6,3d4,4s2