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Calculate the empirical formula weight. Find the ratio of the molecular weight to the empirical formula weight. (n= molecular weight/ empirical formular weight). Multiply each subscript of the empirical formula by n.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agothe empirical formula would just be the smallest whole number ratio from the molecular formula
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Explain why the percent composition of certain compounds are not sufficient to determine the compounds molecular formulas?
Because unlike the empirical formula, the molecular formula does not have to be the simplest ratio.If by chance you are given the percent composition of the elements in a substance, you could calculate the empirical formula and then the empirical formula's mass. However, the molecular formula equation is molecular formula= (empirical formula)n, where n is the mass of the molecular formula divided by the mass of the empirical formula. You would, therefore, need to know the mass belonging to the molecular formula, which you are not given.
What are some advantages of molecular formulae?
With a molecular formula we can calculate the molar mass and the chemical composition of a compound, also we can write chemical equations.
Is CCI4 a molecular formula or formula unit?
CCl4 is molecular formula.
What is the molecular formula for t-butylnaphthalene?
molecular formula of t-butylnapthalene
What is the molecular formula of the principal molecular or ionic species present in glucose?
It is a molecular species with the formula C6H12O6
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
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 formula is used to calculate the atomicity of elements?
atomic mass/molecular mass
Explain why the percent composition of certain compounds are not sufficient to determine the compounds molecular formulas?
Because unlike the empirical formula, the molecular formula does not have to be the simplest ratio.If by chance you are given the percent composition of the elements in a substance, you could calculate the empirical formula and then the empirical formula's mass. However, the molecular formula equation is molecular formula= (empirical formula)n, where n is the mass of the molecular formula divided by the mass of the empirical formula. You would, therefore, need to know the mass belonging to the molecular formula, which you are not given.
What are some advantages of molecular formulae?
With a molecular formula we can calculate the molar mass and the chemical composition of a compound, also we can write chemical equations.
Is H2O a molecular formula or formula unit?
a molecular formula
A multiple of an empirical formula is often called what?
molecular formula :]-kyrstiann dynae :]
Which chemical formula is both an empirical formula and a molecular formula?
It would be a molecular formula for C3h5o.
Is CH2O an empirical or molecular formula?
CCl4 is the molecular formula for carbon tetrachloride. It is the same as its empirical formula.
Is C4H10 an empirical formula or a molecular formula for butane?
The butane formula is molecular C4H10. Its empirical formula is C2H5
What is the molecular formula for startch?
The molecular formula for Starch is C6H10O5.
What is the molecular formula of methanate?
The molecular formula of methane is CH4
