1. STEP THREE: CONVERT OBJECTIVE TO UNITS.
CONVERT TO GAS VOL
VOL = MOLES * 22.4
CONVERT TO PARTICLES
PARTICLES =
MOLES * 6.02 * 1023
CONVERT TO MOLES
VOLUME = MOLES/ M
RECOGNIZE:
GIVEN IS A MASS IN GRAMS, ANY PHASE.
RECOGNIZE
GIVEN IS A GAS (g) VOLUME AT STP
GIVEN IS IN PARTICLES (ATOMS OR MOLECULES)
GIVEN IS AN AQUIOUS SOLUTION (aq)
MOLES = MASS/GFM
MOLES =VOL(L)/22.4L
MOLES = PARTICLES
6.02 * 1023
RATIO MOLES GIVEN TO MOLES OBJECTIVE TO SOLVE FOR
MOLES OF OBJECTIVE
USE COEFFICIENT OF BALANCED REACTION
MOLES =VOLUME * M
CONVRERT TO MASS
MASS = MOLES * GFM
STEP ONE: CONVERT KNOWN TO MOLES.
STEP TWO: MOLE RATIO
STEP THREE: CONVERT OBJECTIVE TO UNITS.

2. STEP THREE: CONVERT OBJECTIVE TO UNITS.
CALCULATE THE YEILD OF NH3 in grams IF 8 GRAMS OF H2 REACTS COMPLETLEY WITH EXCESS NITROGEN. N2 + 3H2  2NH3
CONVERT TO GAS VOL
VOL = MOLES * 22.4
CONVERT TO PARTICLES
PARTICLES =
MOLES * 6.02 * 1023
CONVERT TO MOLES
VOLUME = MOLES/ M
RECOGNIZE:
GIVEN IS A MASS IN GRAMS, ANY PHASE.
RECOGNIZE
GIVEN IS A GAS (g) VOLUME AT STP
GIVEN IS IN PARTICLES (ATOMS OR MOLECULES)
GIVEN IS AN AQUIOUS SOLUTION (aq)
MOLES = MASS/GFM
MOLES =VOL(L)/22.4L
MOLES = PARTICLES
6.02 * 1023
RATIO MOLES GIVEN TO MOLES OBJECTIVE TO SOLVE FOR
MOLES OF OBJECTIVE
USE COEFFICIENT OF BALANCED REACTION
MOLES =VOLUME * M
CONVRERT TO MASS
MASS = MOLES * GFM
STEP ONE: CONVERT KNOWN TO MOLES.
STEP TWO: MOLE RATIO
STEP THREE: CONVERT OBJECTIVE TO UNITS.

3. CALCULATE THE YEILD OF NH3 in grams IF 8
CALCULATE THE YEILD OF NH3 in grams IF 8.0 GRAMS OF H2 REACTS COMPLETLEY WITH EXCESS NITROGEN. N2 + 3H2  2NH3
STEP 1 Identify known (the substance that can be converted to moles), choose the correct equation to convert to moles. In this problem 8.0 grams of H2 is a given mass.
MOLES = MASS/GFM
MOLES = 8.00g/ 2.0 g/mol
MOLES = 4.0 mol
STEP 2 RATIO known to objective, use reaction coefficients to compare H2 known) to NH3 (objective).
H = = mol ,
NH X X = mol NH3
STEP 3 Convert Objective to required units. Convert ammonia from grams to moles.
MOLES = MASS/GFM
2.66 = MASS/ 17.0 g/mol
MASS = g

4. STEP THREE: CONVERT OBJECTIVE TO UNITS.
CALCULATE THE REQUIRED QUANTITY OF H2 GAS AT STP TO PRODUCE 40 GRAMS OF NH3? N2 + 3H2  2NH3
CONVERT TO GAS VOL
VOL = MOLES * 22.4
CONVERT TO PARTICLES
PARTICLES =
MOLES * 6.02 * 1023
CONVERT TO MOLES
VOLUME = MOLES/ M
RECOGNIZE:
GIVEN IS A MASS IN GRAMS, ANY PHASE.
RECOGNIZE
GIVEN IS A GAS (g) VOLUME AT STP
GIVEN IS IN PARTICLES (ATOMS OR MOLECULES)
GIVEN IS AN AQUIOUS SOLUTION (aq)
MOLES = MASS/GFM
MOLES =VOL(L)/22.4L
MOLES = PARTICLES
6.02 * 1023
RATIO MOLES GIVEN TO MOLES OBJECTIVE TO SOLVE FOR
MOLES OF OBJECTIVE
USE COEFFICIENT OF BALANCED REACTION
MOLES =VOLUME * M
CONVRERT TO MASS
MASS = MOLES * GFM
STEP ONE: CONVERT KNOWN TO MOLES.
STEP TWO: MOLE RATIO
STEP THREE: CONVERT OBJECTIVE TO UNITS.