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# How does one determine a molecule formula from the empirical formula?

Updated: 10/11/2022

Wiki User

10y ago

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.

Wiki User

10y ago

bruh_man *

Lvl 7
11mo ago

Multiply subscripts in the empirical formula by molar mass/empirical formula mass

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Q: How does one determine a molecule formula from the empirical formula?
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Related questions

### Why is empirical formula not double that of the monosaccharide?

According to biologists, the reason an empirical formula is not double that of the monosaccharide is because it loses one water molecule.

### Why is the empirical formula not double of the monosaccharides?

According to biologists, the reason an empirical formula is not double that of the monosaccharide is because it loses one water molecule.

### What do empirical formulas determine?

Empirical formulas determine the ratio of atoms of different elements within a chemical compound and can be derived by dividing the number of each element's atoms by their greatest common factor. They do not necessarily describe the full chemical makeup of a molecule. For example, benzene has the formula C6H6 but its empirical formula is simply CH because there is one hydrogen atom for every carbon atom. Glucose has the molecular formula of C6H12O6; its empirical formula is CH2O. Because the molecular formula for water, H2O, cannot be further simplified (empirical formulas have only whole numbers) H20 is also its empirical formula.

### What is relationship between empirical formula and formula unit?

A formula unit includes the correct number of each kind of atoms present in a molecule of a covalently bonded compound, but an empirical formula does not necessarily do so. An empirical formula is reliable with respect to the ratios between each kind of atom, but the molecule may contain any positive integral number of empirical formulas, including one.

### How do you calculate Molecular formula from empirical formulaWhat could you do with that information to determine that the empirical and molecular formulas are related to one another by a factor of 6?

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.

### What information is given by a molecular formula?

the empirical formula and the molar mass

### Empirical and molecular formulas?

The Empirical formula of Al2Br6 is AlBr3.

### How does one determine a molecular formula from the empirical form?

molar 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

### What other information is required to know whether a formula is both empirical and molecular?

We need to know the elements contained in this molecule and the percentages.