Ch.10 The Mole

Front

What is the SI unit for the amount of a substance?

Back

Mole (mol)

Front

What is the representative particle for an element?

Back

Atom

Front

The formula unit is the representative particle for what?

Back

Ionic compounds

Front

What conversion factor would we need to convert moles of helium to atoms of helium?

Back

Front

Is my friend correct to multiply the number of atoms by atoms/mol to convert atoms to moles?

Back

No, you should divide the number of atoms by.

Front

Why do you need to know the formula for a molecule in order to calculate the number of moles of one of the atoms?

Back

Because the number of each type of atom in a molecule determines how many moles of that atom are present in a mole of the compound.

Front

How many atoms of fluorine are in molecules of MgF₂?

Back

Each MgF₂ molecule contains 2 F atoms.

Front

What is the molar mass of Pb?

Back

207.2 g/mol

Front

Where do you find the molar mass of an element?

Back

On the periodic table.

Front

How many moles of Cl are in one mole of CaCl₂?

Back

2 moles of Cl