Stoichiometry Cheatsheet 1d4t

STOICHIOMETRY CHEAT SHEET

Grams of Known Na = 22.99 g O = 15.99 g H = 1.00 g

Grams (mass) to Moles

Example

grams of known* 1 mol of known 1 grams of known

39.98 g

435 g NaOH 1

= mol of known

1 mol NaOH 39.98 g NaOH

= 10.9 mol NaOH

Balanced Equation (Mole to Mole Ratio)

2NaOH + BaCl2

Moles to Moles

2NaCl + Ba(OH)2

Example

mol of known 1

? mol of unknown = mol of unknown ? mol of known

10.9 mol NaOH 1

1 mol BaCl2 2 mol NaOH

= 5.45 mol BaCl2

Grams of Unknown Ba = 137.3 g

Moles to Grams (mass)

2-Cl = 70.9 g 208.2 g

mol of unknown 1

grams of unknown

= grams of unknown*

1 mol unknown

Example 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

1 mol of known grams of known

? mol of unknown ? mol of known

grams of unknown 1 mol unknown

= grams of unknown*

Example 435 g NaOH 1

*given in problem

1 mol NaOH 39.98 g NaOH

1 mol BaCl2 2 mol NaOH

208.2 g BaCl2 1 mol BaCl2

*what you are solving for in problem

= 1133 g BaCl2