Top Answer

No, but by knowing the molecular formula, the molar mass can be calculated.

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0molar mass of unknown/molar mass of empirial = # of empirical units in the molecular formula. Example: empirical formula is CH2O with a molar mass of 30. If the molar mass of the unknown is 180, then 180/30 = 6 and molecular formula will be C6H12O6

Empirical formula = C3H5O Molar mass of empirical formula = 3(12.01)+5(1.008)+1(16) = 57.07 Molar mass of molecular fomula = 114.15 n = Molar mass of molecular fomula/Molar mass of empirical formula = 114.15/57.07 n = 2 Molecular formula = n(empirical formula) Molecular formula = 2(C3H5O) = C6H10O2 Check: 6(12.01)+10(1.008)+2(16)= 114.14

In order to find molecular formula from empirical formula, one needs to know the molar mass of the molecular formula. Then you simply divide the molar mass of the molecular formula by the molar mass of the empirical formula to find out how many empirical formulae are in the molecular formula. Then you multiply the subscripts in the empirical formula by that number.

If you know the molar mass of the compound, you have to calculate the mass of the empirical formula and divide the molar mass of the compound by the mass of the empirical formula in order to find the ratio between the molecular formula and the empirical formula. Then multiply all the atoms by this ratio to find the molecular formula!

If you mean to find its molecular formula: 1. First you must obtain the empirical formula. Find the molar mass of the empirical formula. 2. The molar mass of the entire molecule must be given or its molecular formula cannot be find. 3. Put the molar mass given over the molar mass of the empirical formula. 4. Use this number (kind of like a scaler) to multiply by the entire empirical formula. This is the molecular formula.

molar mass over grams of elementThe above answer is somewhat correct. In order to find the molecular formula when given the empirical formula, you must first find the molar mass of the empirical formula.MOLAR MASS# atoms element A x atomic mass element A (periodic table) = mass A# atoms element B x atomic mass element B (periodic table) = mass B... etc.Add up all of the mass values found above and you have the molar mass.Then, after you have found the empirical formula's molar mass, you divide the molar mass of the molecular formula by the empirical formula's molar mass (solving for n).MOLECULAR FORMULA EQUATION: N (Empirical formula) (read as N times empirical formula) where:N = Molar mass substance---- Molar Mass emp. form.

Molar mass is the mass of particles in one mole of a substance. Molar mass is equal to atomic/ molecular/ formula mass in amu. Formula mass is in atomic mass unit while molar mass is in grams .

molar mass/ empirical formula mass

the empirical formula and the molar mass

Acetone has the molecular formula of CH3COCH3 (C3H6O) and a molar mass of 58.08 g/mol.

Molar mass = 258.21 g/mol Molecular formula = KAl(SO4)2

The empirical formula CH2 has a formula mass of 14, and 42.0/14 = 3. Therefore, the molecular formula is C3H6.

Formula mass is in atomic mass unit (amu) while molar mass is in grams (g).Molar mass is the amount of particles (atoms/molecules) in one mole of a substance.Molar mass is equal to atomic/ molecular/ formula mass in u.

The molecular formula is the same as the empirical formula, NO2. The compound NO2 has a molar mass of 46g/mol, so the empirical and molecular formulas are the same.

The molecular formula of ethene is C2H6.

C6H12O3 is a molecular formula that contains 54.5% C, 9.1% H, and 36.4% O and has molar mass of 132 amu.

Dicyclohexyl chemical formula is C12H22 and the molecular weight is 166,3031 (not 200).

This is 8; the chemical formula is C6H5CH=CH2 and the molar mass is 104,15 g.

The chemical formula of monosodium glutamate is C5H8NO4Na.

The nitrate ion, formula NO3− , has a molecular mass of 62.0049 g/mol.

The formula is Ag3PO4.See the Related Questions link to the left to solve for the molar mass (same as molecular weight).

In most cases one cannot identify a compound by its molar mass. There are too many possibillities.

The density or some other information must be given that allow you to find the molar mass. Calculate the empirical formula mass. Divide molar mass by empirical formula mass. This answer is multiplied by all subscripts of the empirical formula to get the molecular formula.

This is the molar mass or atomic weight expressed in grams.

You'll need a lot more information about this substance than (only) this molar mass to find its formula, though it might help to confirm your findings.

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