The SI unit for measuring the amount of a substance.

The number of representative particles in a mole, is called .......................................

The mole allows chemists to count the number of representative particles in a substance.

The representative particle for copper.

The representative particle for hydrogen gas.

The representative particle for sodium ion.

The representative particle for magnesium chloride.

How many moles of magnesium is 2.5 x 10²³ atoms of magnesium?

Propane is a gas used for cooking and heating. How many atoms are in 1.06 mole of propane C₃H₈ ?(H=1, C=12)

The atomic mass of an element isn't expressed in atomic mass units (amu).

The atomic masses are relative values based on the mass of the most common isotope of chlorine (chlorine-37).

The atomic mass of an element expressed in..........................

The mass of a mole of an element is its molar mass.

What is the molar mass of water (H₂O)? {H = 1, O = 16}