stoichiometry pt.1

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is Avogadro's Number?

Back

Avogadro's Number is 6.02 x 10^23, which is the number of particles (atoms, molecules, etc.) in one mole of a substance.

Front

How do you calculate the number of moles from particles?

Back

To calculate moles from particles, divide the number of particles by Avogadro's Number (6.02 x 10^23).

Front

What is the molar mass of a compound?

Back

The molar mass of a compound is the mass of one mole of that compound, usually expressed in grams per mole (g/mol).

Front

How do you find the mass of a substance from moles?

Back

To find the mass of a substance from moles, multiply the number of moles by the molar mass of the substance.

Front

What is the formula to calculate moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol).

Front

How many moles are in 12.7g of CaF2?

Back

0.16 mol.

Front

How many moles are in 4.5x10^24 particles?

Back

0.747 mol.

Front

What is the mass of 9.4 moles of B2(Cr2O7)3?

Back

4,339.23 g.

Front

How many Hydrogen atoms are in 4H2O?

Back

There are 8 Hydrogen atoms.