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no, but sometimes they are equal.
Added:
Molecular mass differs from more common measurements of the mass of chemicals, such as molar mass, by taking into account the isotopic composition of a molecule rather than the average isotopic distribution of many molecules.
As a result, molecular mass is a more precise number than molar mass.
However it is more accurate to use molar mass on bulk samples. This means that molar mass is appropriate most of the time except when dealing with single molecules.
What else can I help you with?
What steps are used to convert an empirical formula into a molecular formula?
By determining the molecular mass, then dividing the molecular mass by the formula mass of the empirical formula to determine by what integer the subscripts in the empirical formula must be multiplied to produce the molecular formula with the experimentally determined molecular mass.
What is the molecular formula of a compound given the molar mass of the compound is 186.5g and the empirical formula is C2H7?
The molecular mass is C2H7 you have 186.5 g of the substance, so calculate 2(12.01)+7(1.01)=31.09 so 186.5/31.09=6 so you can say C12H42 but when you divide 2 by 2 and 7 by 2 you obtain 1 and 3.5 because you have 3.5 you have to multiplied by 2 again, so you obtain the same formula as the empirical formula. It example is the same as water, which empirical formula es H2O as its molecular formula
What is the molecular formula of dicyclohexyl if its molar mass is 200 grams?
Dicyclohexyl chemical formula is C12H22 and the molecular weight is 166,3031 (not 200).
How can you determine the molar mass without knowing the molecular formula?
To determine the molar mass without knowing the molecular formula, you can use techniques such as mass spectrometry, which measures the mass-to-charge ratio of ions, allowing you to infer the molar mass of the compound. Additionally, you can perform elemental analysis to assess the composition of the compound and then calculate the molar mass based on the known atomic masses of the elements present. These methods can provide an approximate molar mass even in the absence of the exact molecular formula.
What is the molecular formula of a molecule with a molar mass of 122.0367?
C7h6o2
What is the molar mass of a compound if its molecular weight is 58.44 dalton g/mol?
The molar mass of a compound is the same as its molecular weight, which is 58.44 g/mol.
Is molecular weight the same as molar mass?
Yes, molecular weight and molar mass are essentially the same concept in chemistry. They both refer to the mass of a molecule or compound, expressed in atomic mass units or grams per mole.
What is molar atomic mass?
The atomic (molecular) weight of a substance is its molar mass.
What is the molecular formula of NH2Cl molar 51.5g?
The molar mass of NH2Cl is 51.5 g/mol, which means one mole of NH2Cl weighs 51.5 grams. The molecular formula of NH2Cl remains the same, NH2Cl, regardless of its molar mass.
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 is the molecular formula of a compound with the empirical formula NH2Cl and molar mass of 51.5g mol?
The empirical formula NH2Cl has a molar mass of 51.5 g/mol, so the molecular formula can be determined by finding the ratio of the molar mass of the molecular formula to the molar mass of the empirical formula. The molecular formula of the compound is therefore NH2Cl2.
How do you find out molecular wt using density?
I'm not exactly positive. But if you know the volume in grams and the mass (giving you density), then you should be able to figure out the molecular weight. The mass is the same as the molar mass, which I would assume is the same as the molecular weight, but I'm not positive.
What is the molecular formula of the compound ch2 with molar mass equals 168 gmol?
c12h24
What steps are used to convert an empirical formula into a molecular formula?
By determining the molecular mass, then dividing the molecular mass by the formula mass of the empirical formula to determine by what integer the subscripts in the empirical formula must be multiplied to produce the molecular formula with the experimentally determined molecular mass.
If the substance has a molar mass of 160 plus 5 grams per mole what is its molecular formula?
To find the molecular formula, you need the empirical formula and molar mass. If the molar mass is 160 plus 5 grams per mole, the molecular formula cannot be determined without additional information about the empirical formula's molar mass relationship.
What is the molecular formula of a compound given the molar mass of the compound is 186.5g and the empirical formula is C2H7?
The molecular mass is C2H7 you have 186.5 g of the substance, so calculate 2(12.01)+7(1.01)=31.09 so 186.5/31.09=6 so you can say C12H42 but when you divide 2 by 2 and 7 by 2 you obtain 1 and 3.5 because you have 3.5 you have to multiplied by 2 again, so you obtain the same formula as the empirical formula. It example is the same as water, which empirical formula es H2O as its molecular formula
What is the molecular formula of dicyclohexyl if its molar mass is 200 grams?
Dicyclohexyl chemical formula is C12H22 and the molecular weight is 166,3031 (not 200).
