Parts of an Atom
Atomic mass of oxygen
15.999
This is anything that takes up space & has mass.
matter
Avogadro's number
6.022 * 1023
Atomic masses are measured in what?
AMU or g/mol
Density of lead if the volume is 20.0cm^3 & mass is 228g. D= mass / volume
11.5g/cm^3
Number of atoms in 2 moles of Calcium
1.204*1024
Number of moles in 3*1023 atoms of Magnesium
0.5
A space that does not have any matter
Vacuum
Some atoms have more ___________, which makes it an isotope and gives it more mass.
neutrons
Number of atoms in 15g grams of H2O.
5.0*1023