Chapter 5.1 · Simulation B

Molar Mass Builder

Build a formula and watch the molar mass add up.

WHAT TO DO

  1. Click element buttons to add atoms. Use the − button in the table to remove one.
  2. For each formula in your table, build it. Copy the atom tally and the total molar mass.
  3. Try Ca(OH)₂: choose Inside parentheses for O and H. Watch how the 2 multiplies.
  4. Try water of hydration with the · n H₂O buttons.

BUILD A FORMULA

Add atoms to:
Number after the parentheses: 2
Water of hydration (· n H₂O): 0
Quick start:

CHECK YOUR ANSWER

Build a formula, then add the parts by hand and check.

YOUR FORMULA

 
0 atoms

ATOM TALLY AND RUNNING SUM

AtomCountAtomic massSubtotal (g/mol)Change

Molar mass: 0.00 g/mol

Atomic masses use the unit’s two-decimal table.