H45He67Na67Ti85K67SN75OS33Ca46Rb72CS49766Ta39Y31 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁ is 1624267.9581 g/mol

Convert between H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁ weight and moles

Compound	Moles		Weight, g
H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁

Elemental composition of H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	45	0.0028
Helium	He	4.002602	67	0.0165
Sodium	Na	22.98976928	67	0.0948
Titanium	Ti	47.867	85	0.2505
Potassium	K	39.0983	67	0.1613
Sulfur	S	32.065	49800	98.3112
Nitrogen	N	14.0067	75	0.0647
Oxygen	O	15.9994	1	0.0010
Calcium	Ca	40.078	46	0.1135
Rubidium	Rb	85.4678	72	0.3789
Carbon	C	12.0107	1	0.0007
Tantalum	Ta	180.94788	39	0.4345
Yttrium	Y	88.90585	31	0.1697

Computing molar mass step by step
First, compute the number of each atom in H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁: H: 45, He: 67, Na: 67, Ti: 85, K: 67, S: 49800, N: 75, O: 1, Ca: 46, Rb: 72, C: 1, Ta: 39, Y: 31 Then, lookup atomic weights for each element in periodic table: H: 1.00794, He: 4.002602, Na: 22.98976928, Ti: 47.867, K: 39.0983, S: 32.065, N: 14.0067, O: 15.9994, Ca: 40.078, Rb: 85.4678, C: 12.0107, Ta: 180.94788, Y: 88.90585 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₄₅He₆₇Na₆₇Ti₈₅K₆₇SN₇₅OS₃₃Ca₄₆Rb₇₂CS₄₉₇₆₆Ta₃₉Y₃₁) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(He) * Weight(He) + Count(Na) * Weight(Na) + Count(Ti) * Weight(Ti) + Count(K) * Weight(K) + Count(S) * Weight(S) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Ca) * Weight(Ca) + Count(Rb) * Weight(Rb) + Count(C) * Weight(C) + Count(Ta) * Weight(Ta) + Count(Y) * Weight(Y) = 45 * 1.00794 + 67 * 4.002602 + 67 * 22.98976928 + 85 * 47.867 + 67 * 39.0983 + 49800 * 32.065 + 75 * 14.0067 + 1 * 15.9994 + 46 * 40.078 + 72 * 85.4678 + 1 * 12.0107 + 39 * 180.94788 + 31 * 88.90585 = 1624267.9581 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is CH₄₅Ca₄₆He₆₇K₆₇N₇₅Na₆₇ORb₇₂S₄₉₈₀₀Ta₃₉Ti₈₅Y₃₁

Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:

Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.
Functional groups: D, T, Ph, Me, Et, Bu, AcAc, For, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
parenthesis () or brackets [].
Common compound names.

Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, nitric acid, potassium permanganate, ethanol, fructose, caffeine, water.

Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10²³ particles (Avogadro's number)

Steps to calculate molar mass

Identify the compound: write down the chemical formula of the compound. For example, water is H₂O, meaning it contains two hydrogen atoms and one oxygen atom.
Find atomic masses: look up the atomic masses of each element present in the compound. The atomic mass is usually found on the periodic table and is given in atomic mass units (amu).
Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.
Add them together: add the results from step 3 to get the total molar mass of the compound.

Example: calculating molar mass

Let's calculate the molar mass of carbon dioxide (CO₂):

Carbon (C) has an atomic mass of about 12.01 amu.
Oxygen (O) has an atomic mass of about 16.00 amu.
CO₂ has one carbon atom and two oxygen atoms.
The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol.

Lesson on computing molar mass

Weights of atoms and isotopes are from NIST article.

molecular weights calculated today

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