I would believe the answer is:
.9211 ATM
9.51 L
Protons-33
neutrons-42
electrons-33
Answer: Formula: Mass = (Volume)(Density)
Iron Density = 7.87 g/cm^3
Volume of Iron = 55.2 cm^3
Mass=(V)(D)
Mass= (55.2 cm^3) x (7.87 g/cm^3)
Mass= 434,42 g
Explanation:
2.167*10^22 atoms of hydrogen