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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.
Is C8H18O organic or inorganic?
Compounds having this molecular formula are organic compounds.
Which compounds have the same molecular formula but different structures?
isomers
Do isomers have the same molecular formula?
Yes, isomers are compounds that have the same molecular formula but different structural arrangements or spatial orientations of their atoms.
The empirical formula for cumene a compound containing only carbon and hydrogen is C3H4. Its Molecular mass is 120 g. What is the molecular formula for cumene?
This molecular formula is C9H12.
What is more useful for determining a compounds identity Empirical formulaPercent compositionOR Molecular formula?
molecular formula
What is molecular formula for 'ammonia nitrogen'?
Ammonia and nitrogen are two distinct compounds, not a single compound that would have a molecular formula.
Why ionic compounds do not posses molecular formula?
it is not a molecule
What is the term for compounds that have the same molecular formula but a different molecular shape?
Isomers.
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.
Compounds with the same molecular formula but different structures?
isomers
What molecular formulas are also an empirical formula?
Any molecular formula where the subscripts do not have a common factor that can divide them all. For example: CH4 (methane) is a molecular formula that is also an empirical formula because there is no number (other then one) that can divide both the 4 and the 1. Take ethane as another example. It hasn't the empirical formula which is similar to the molecular formula.
Two compounds that have the same molecular formula but different structural formulas are?
Two compounds that have the same molecular formula but different structural formulas are isomers. Isomers are compounds with the same number and types of atoms but arranged differently. An example is ethanol (C2H6O) and dimethyl ether (C2H6O), both have the same molecular formula but different structural formulas.
Which compound has the empirical formula ch2o?
CH2O is not only the empirical but also the molecular formula for formaldehye. It is also the empirical but not the molecular formula for hydroxyacetaldehyde, acetic acid, methyl formate, 1,3-dihydroxyacetone, and many other compounds.
Is C8H18O organic or inorganic?
Compounds having this molecular formula are organic compounds.
What is the molecular formula for silver nitrate?
The molecular formula for silver nitrate is AgNO3.This white solid is often used as a precursor to many other silver compounds.
Which compounds have the same molecular formula but different structures?
isomers
