How many balloons, each containing 6.02*10^23 particles of helium gas, can be filled from a tank that contains 1.204 * 10^25 helium particles?

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

Different isotopes indicate that an element will have different numbers of

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.