STOICHIOMETRY CHEAT SHEET Grams of Known
Na = 22.99 g
O = 15.99 g
H = 1.00 g
Grams (mass) to Moles Example 39.98 g
grams of known* 1 mol of known 435 g NaOH 1 mol NaOH
1 grams of known 1 39.98 g NaOH
Balanced Equation (Mole to Mole Ratio)
2NaOH + BaCl2 2NaCl + Ba(OH)2
Moles to Moles Example
mol of known ? mol of unknown 10.9 mol NaOH 1 mol BaCl2
1 ? mol of known 1 2 mol NaOH
Grams of Unknown
Ba = 137.3 g
Moles to Grams (mass) 2-Cl = 70.9 g
208.2 g
mol of unknown grams of unknown Example
1 1 mol unknown 5.45 mol BaCl2 208.2 g BaCl2
1 1 mol BaCl2
= 1133 g BaCl2
Grams to Moles to Moles to Grams (Putting it all together)
grams of known* 1 mol of known ? mol of unknown grams of unknown
1 grams of known ? mol of known 1 mol unknown
Example
435 g NaOH 1 mol NaOH 1 mol BaCl2 208.2 g BaCl2
1 39.98 g NaOH 2 mol NaOH 1 mol BaCl2
*given in problem *what you are solving for in problem
= mol of known
= 10.9 mol NaOH
= mol of unknown
= 5.45 mol BaCl2
= grams of unknown*
= grams of unknown*
= 1133 g BaCl2
