Salt

Molar Mass of Ammonium Thiosulfate ((NH₄)₂S₂O₃)

Molar Mass of Ammonium Thiosulfate is a key number in salt-related stoichiometry, especially when balancing reactants and products. Molar Mass of (NH₄)₂S₂O₃ is 148.19 g/mol, based on 4 element types, with S contributing the largest share.

For fast checks, use the molar mass calculator, verify element values in the periodic table, or explore more molar mass page.

Molar Mass of Ammonium Thiosulfate is:

148.19 g/mol

Molar Mass of (NH₄)₂S₂O₃ equals 148.19 g/mol, so 148.19 grams is one mole.

Element Breakdown Table

Element	Count	Atomic mass	Calculation	Contribution
Nitrogen (N)	2	14.01	2 x 14.01	28.01 g/mol
Hydrogen (H)	8	1.01	8 x 1.01	8.06 g/mol
Sulfur (S)	2	32.06	2 x 32.06	64.12 g/mol
Oxygen (O)	3	16.00	3 x 16.00	48.00 g/mol
Final molar mass 28.010 + 8.060 + 64.120 + 48.000				148.19 g/mol

Computing Molar Mass of Ammonium Thiosulfate Step by Step

Molar Mass of Ammonium Thiosulfate: Step-by-Step Calculation

1. Identify Element Counts

Read (NH₄)₂S₂O₃ and list how many atoms of each element are present:

2 atoms of Nitrogen (N)
8 atoms of Hydrogen (H)
2 atoms of Sulfur (S)
3 atoms of Oxygen (O)

2. Determine Atomic Masses

Look up each element mass from the periodic table:

Nitrogen (N) ~= 14.007 g/mol
Hydrogen (H) ~= 1.008 g/mol
Sulfur (S) ~= 32.060 g/mol
Oxygen (O) ~= 15.999 g/mol

3. Multiply Atomic Mass by Quantity

Multiply atom count by atomic mass for each element:

Nitrogen (N): 2 x 14.007 = 28.010 g/mol
Hydrogen (H): 8 x 1.008 = 8.060 g/mol
Sulfur (S): 2 x 32.060 = 64.120 g/mol
Oxygen (O): 3 x 15.999 = 48.000 g/mol

4. Sum Total Molar Mass

Add all contributions to get the final molar mass in g/mol.

Molar Mass = (2 x 14.007 + 8 x 1.008 + 2 x 32.060 + 3 x 15.999)

Molar Mass = 28.010 + 8.060 + 64.120 + 48.000

Molar Mass = 148.190 g/mol

Final rounded value shown on this page: 148.19 g/mol.

Visual Calculation Chart

Element	Count	Mass	Count x mass	Contribution
Nitrogen (N)	2	14.007	2 x 14.007	= 28.010
Hydrogen (H)	8	1.008	8 x 1.008	= 8.060
Sulfur (S)	2	32.060	2 x 32.060	= 64.120
Oxygen (O)	3	15.999	3 x 15.999	= 48.000
Final molar mass 28.010 + 8.060 + 64.120 + 48.000				= 148.190

Easy Way to Remember

Easy way to remember Molar Mass of Ammonium Thiosulfate

Molar Mass of Ammonium Thiosulfate: 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?

– Ammonium Thiosulfate contains 4 element types: N, H, S, O.

– S contributes the largest share of this compound's total molar mass.

– In (NH₄)₂S₂O₃, H appears with the highest atom count.

– Its molar mass is 148.19 g/mol, which is used directly in gram-to-mole conversions.

– A common reaction for Ammonium Thiosulfate is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).

Why This Compound Matters

Ammonium Thiosulfate 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 Ammonium Hydrogen Sulfate (NH₄HSO₄) and Ammonium Sulfate ((NH₄)₂SO₄).

Where This Is Used

Competitive exams and school chemistry tests.
Lab work when preparing measured solutions.
Real-world manufacturing and quality checks.

Whenever you need lab-ready totals in those settings, molar mass page stays handy for cross-checking.

Common Mistakes When Calculating This

Skipping subscripts in (NH₄)₂S₂O₃ and miscounting atoms.
Forgetting that parentheses in (NH₄)₂S₂O₃ multiply the entire grouped part.
Mixing up S element contribution with total molar mass.
Reporting a value without units; final answer should be in g/mol for Ammonium Thiosulfate.

Quick Revision

Formula: (NH₄)₂S₂O₃

Molar Mass: 148.19 g/mol

Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.

Formula Explanation

(NH₄)₂S₂O₃ contains Nitrogen (N) (2), Hydrogen (H) (8), Sulfur (S) (2), Oxygen (O) (3). Add each element contribution to get total molar mass.

Molar Mass = Sum (atomic mass of each element x atom count)

FAQ

What is the molar mass of (NH4)2S2O3?

The molar mass of (NH4)2S2O3 is 148.19 g/mol based on atomic masses and atom counts.

How do I calculate (NH4)2S2O3 molar mass quickly?

Count atoms in (NH4)2S2O3, multiply each by atomic mass, then add every contribution.

Where is (NH4)2S2O3 molar mass used?

It is used in lab measurements, exam stoichiometry questions, and mole-to-gram conversions.

How do I convert between grams and moles for (NH4)2S2O3?

Use moles = mass (g) / molar mass. With 148.19 g/mol, divide grams by 148.19 to get moles.

Does rounding affect my final (NH4)2S2O3 answer?

Keep extra digits while multiplying, then round the final molar mass to match your course rules (commonly 2 decimal places).

Conclusion

Molar Mass of Ammonium Thiosulfate and Molar Mass of (NH₄)₂S₂O₃ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.

Molar Mass of Ammonium Thiosulfate ((NH4)2S2O3)