Molar Mass of Magnesium Chromate (MgCrO4)
Molar Mass of Magnesium Chromate is a key number in salt-related stoichiometry, especially when balancing reactants and products. Molar Mass of MgCrO₄ is 140.30 g/mol, based on 3 element types, with O contributing the largest share.
For fast checks, use the molar mass calculator, verify element values in the periodic table, or explore more molar mass.
Molar Mass of Magnesium Chromate is:
140.30 g/mol
Molar Mass of MgCrO₄ equals 140.30 g/mol, so 140.30 grams is one mole.
Element Breakdown Table
| Element | Count | Atomic mass | Calculation | Contribution |
|---|---|---|---|---|
| Magnesium (Mg) | 1 | 24.30 | 1 x 24.30 | 24.30 g/mol |
| Chromium (Cr) | 1 | 52.00 | 1 x 52.00 | 52.00 g/mol |
| Oxygen (O) | 4 | 16.00 | 4 x 16.00 | 64.00 g/mol |
Final molar mass 24.300 + 52.000 + 64.000 | 140.30 g/mol | |||
Computing Molar Mass of Magnesium Chromate Step by Step
Molar Mass of Magnesium Chromate: Step-by-Step Calculation
1. Identify Element Counts
Read MgCrO4 and list how many atoms of each element are present:
- 1 atom of Magnesium (Mg)
- 1 atom of Chromium (Cr)
- 4 atoms of Oxygen (O)
2. Determine Atomic Masses
Look up each element mass from the periodic table:
- Magnesium (Mg) ~= 24.305 g/mol
- Chromium (Cr) ~= 51.996 g/mol
- Oxygen (O) ~= 15.999 g/mol
3. Multiply Atomic Mass by Quantity
Multiply atom count by atomic mass for each element:
- Magnesium (Mg): 1 x 24.305 = 24.300 g/mol
- Chromium (Cr): 1 x 51.996 = 52.000 g/mol
- Oxygen (O): 4 x 15.999 = 64.000 g/mol
4. Sum Total Molar Mass
Add all contributions to get the final molar mass in g/mol.
Molar Mass = (1 x 24.305 + 1 x 51.996 + 4 x 15.999)
Molar Mass = 24.300 + 52.000 + 64.000
Molar Mass = 140.300 g/mol
Final rounded value shown on this page: 140.30 g/mol.
Visual Calculation Chart
| Element | Count | Mass | Count x mass | Contribution |
|---|---|---|---|---|
| Magnesium (Mg) | 1 | 24.305 | 1 x 24.305 | = 24.300 |
| Chromium (Cr) | 1 | 51.996 | 1 x 51.996 | = 52.000 |
| Oxygen (O) | 4 | 15.999 | 4 x 15.999 | = 64.000 |
Final molar mass 24.300 + 52.000 + 64.000 | = 140.300 | |||
Easy Way to Remember
Easy way to remember Molar Mass of Magnesium Chromate
- Molar Mass of Magnesium Chromate: count atoms, multiply masses, and add totals.
- Write each element in a table so you do not miss subscripts.
- Keep 2-3 decimals during steps, then round only at the end.
Sample Reactions
| Type | Reaction |
|---|---|
| Double displacement | AgNO₃ + NaCl → AgCl + NaNO₃ |
| Acid-salt reaction | Na₂CO₃ + ₂HCl → ₂NaCl + H₂O + CO₂ |
Do You Know?
– Magnesium Chromate contains 3 element types: Mg, Cr, O.
– O contributes the largest share of this compound's total molar mass.
– In MgCrO₄, O appears with the highest atom count.
– Its molar mass is 140.30 g/mol, which is used directly in gram-to-mole conversions.
– A common reaction for Magnesium Chromate is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).
Why This Compound Matters
Magnesium Chromate appears in ionic-reaction practice and precipitation examples in school chemistry.
Its molar mass helps students move quickly between grams, moles, and concentration problems.
Similar calculations can be compared with Magnesium Dichromate (MgCr2O7) and Sodium Chromate (Na2CrO4).
Where This Is Used
- Competitive exams and school chemistry tests.
- Lab work when preparing measured solutions.
- Real-world manufacturing and quality checks.
Common Mistakes When Calculating This
- Skipping subscripts in MgCrO₄ and miscounting atoms.
- Rounding atomic masses too early before finishing all multiplication steps.
- Mixing up O element contribution with total molar mass.
- Reporting a value without units; final answer should be in g/mol for Magnesium Chromate.
Quick Revision
Formula: MgCrO4
Molar Mass: 140.30 g/mol
Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.
Before a test, molar mass calculations helps you review more formulas without rebuilding each table manually.
Formula Explanation
MgCrO4 contains Magnesium (Mg) (1), Chromium (Cr) (1), Oxygen (O) (4). Add each element contribution to get total molar mass.
FAQ
Conclusion
Molar Mass of Magnesium Chromate and Molar Mass of MgCrO₄ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.