The density of iron is 7.87 g/ml. what is the mass of a 3.00 cm × 4.00 cm × 1.00 cm block of iron?

Data:
m (mass) = ?
d (density) = 7.87 g/mL
v (volume) = 3.00cm*4.00cm*1.00cm = 12 cm³ = 12mL
Note: 1 cm³ = 1 mL

Formula:


Solving:

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -