Symbol | # Atoms | Name | Atomic # | Molar Mass | Total Mass |
---|---|---|---|---|---|

Na | 1 | Sodium | 11 | 22.989 | 22.989 |

Cl | 1 | Chlorine | 17 | 35.45 | 35.45 |

Total Mass | 58.439 |

58.439 grams/mol.

See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set).

Are you facing one too many chemistry problems sets tonight? Or trying to remember that last chemistry class (20 years ago) as you crunch through the math for a problem at work (or help your kid with their chemistry homework? Then this site is for you!

This particular calculator is a molar mass calculator for chemical reactions. You can use this calculator as part of solving for the theoretical yield of an experiment or process. We have an additional percent yield calculator which can help you translate this into predictions for actual experiments.

Other terms: formula weight calculator, molar weight calculator, molar mass of compounds calculator, molecular mass calculator

We take the formula you provide (NaCl - common table salt - in our default example) and unpack it into the component elements. Then we compare each atom against a table of the standard atomic weights for that element. We present the results in a table at the bottom of the molar mass calculator - it will show the count of atoms, the atomic weight of each element, and the molecular weight for the molecule.

We don't have brackets implemented (yet), so you will need to unpack any bracketed expressions. They don't affect the weight anyhow.
Simply take each element and multiple it by the number of times the bracketed structure occurs. For example:
(C_{6}H_{5})_{3}PCCO => C18H15PCCO

The tool is designed so you can flip between different parts of a problem set. **We recommend you bookmark it so you can refer back to it**.
You can also **share results with a study partner or tutor** by hitting calculate and copying the URL for this page. When your study partner
opens up the URL, they will see your calculations. It's easy share & save results via email. (Be sure to hit calculate first, however)

You also have the option of saving links to the calculations in your research notes files, so you can quickly re-open or check them later. Again - hit calculate first so the URL is updated with your most recent changes. Then copy and save the url.

Molar mass is an important concept in adapting chemical formulas to real world conditions. We may be able to balance a chemical equation and determine that one molecule of hydrogen combines with two of oxygen to make water (or the compound of your choice). But how would you set up the materials in the laboratory? Or if you were, for example, buying oxygen for a process, how would you determine how much to use to make a given quantity of water? Molar mass allows us to convert a chemical reaction into specific amounts of reagents required for the process. By converting the atomic interaction into grams, we can measure and use an appropriate amount of the necessary reagents.

Take a standard chemistry formula for a molecule, split it up into the component atoms, and look up the molar weight of each atom. Add the weight of the atoms in the molecule and you have the molar mass for the molecule.

Our molar mass calculator has this for a variety of other compounds: sodium chloride, carbon dioxide, sulfuric acid, glucose...

- Molar Mass of Water (H2O)
- Molar Mass of Ammonium Hydroxide (AlO3H3)
- Molar Mass of Ammonium phosphate (N3H12PO4)
- Molar Mass of Bismuth subsalicylate (C7H5BiO4)
- Molar Mass of Calcium hydroxide (CaO2H2)
- Molar Mass of carborundum (SiC)
- Molar Mass of hydrochloric acid (HCl)
- Molar Mass of phosphoric acid (H3PO4)
- Molar Mass of ammonium chloride (NH4Cl)
- Molar Mass of baking powder (NaHCO3)
- Molar Mass of Sucrose (C12H22O11)
- Molar Mass of Isopropyl Alcohol (C3H6CHOH)
- Molar Mass of Carbon Monoxide (CO)
- Molar Mass of antimony chloride - 3 (SbCl3)
- Molar Mass of Chloroplatinic acid (H2PtCl6)
- Molar Mass of Lactic Acid (C3H6O3)
- Molar Mass of Mercury Sulfate (HgSO4)
- Molar Mass of Potassium bromate (KBrO3)
- Molar Mass of Potassium thiocyanate (KCNS)
- Molar Mass of Sodium chromate (Na2CrO4)
- Molar Mass of Sodium potassium tartrate (NaKC4H4O6)
- Molar Mass of Thiourea (CH4N2S)
- Molar Mass of Cinnabar (HgS)

Chemistry: Percent Yield Calculator Theoretical Yield Calculator, Molar Mass Calculator

Analysis: Interpolation Coefficient of Variation, Quadratic Formula

Algebra: GCD Calculator, LCM Calculator, Factorial Calculator, Factor An Integer, Perfect Numbers

Other: Weighted Grade Calculator, Weighted Average Calculator, Modulo Calculator, Arithmetic Sequence, Geometric Sequence, Fibonacci Sequence Z Score Calculator,

Content: theoretical yield calculator
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