1.) Some of the sample may have been lost in between testing that could resulted in slight
error when calculating your molar mass.
2.) Weighing sample incorrectly and having too low/high std. deviation
Contaminations with environmental samples
pipetting errors
Molar Mass of Carbon + Molar Mass of Silicon = Molar Mass of SiC. 12.0107 + 28.0855 = 40.0962 g / mol.
no youre thinking of molar mass and atomic weight although you use avogadro's number to find molar mass
In chemical engineering, we deal with molar fluxes and I am very sure molar flux is not a vector, it is simply a scalar. molar flux cannot be negative because you cannot have - 5.0 moles of something flowing but I think you'll have to verify for other cases like magnetic flux and electrical fluxes
Are you thinking of Mm? Molar mass. Or millimeters?
Use Boyle's law
Without more details this is a shot in the dark but I assume that you have the moles and weight of the compound. You then calculated the molar mass from these numbers. The sources of error with doing this experimentially is that you may have lost some of the sample in transferring, you may have weighed the sample incorrectly, and you could have made mistakes in calculations (all human errors).
make sure the flask is cooled about 15 minutes before weighing the flask to avoid the mass error
A chemical analysis and a molar mass determination are needed.
I'm trying to figure out how it affects molar mass as well. However, I do know that it decreases the pressure which is in the denominator of the equation to find the molar mass once the ideal gas equation is manipulated. So i think that with the formation of dimers the molar mass would increase?
During the determination of the partial molal quantities the weight of the solution to which a substance is added is taken into consideration while in case of the partial molar quantity the volume is taken into consideration.
Molar mass of KC2H3O2 = 98.14232 g/mol Molecular weight calculation: 39.0983 + 12.0107*2 + 1.00794*3 + 15.9994*2 See the 'sources and related links' at bottom of this answer. The site there works the molar mass out for you automatically, all you have to do is insert 'KC2H302')
1. CH2 is the chemical formula of the radical methylene. The structure is H-C-H. 2. The molar mass of CH2 is approx. 14; 168 is an error.
The expression"molar mass" for sodium is not corresct. After today rules of IUPAc correct is atomic weight. The atomic weight of sodium is determined very exact: 22,989 769 28 (2013 data); the error is +/- 2 for the last digit of this value.
Molar conductivity at infinite dilution is when molar conductivity is limited. Molar conductivity is when electrolyte conductivity is divided by molar concentration.
Molar Mass of Carbon + Molar Mass of Silicon = Molar Mass of SiC. 12.0107 + 28.0855 = 40.0962 g / mol.
If you know know the molar masses of the reactants in a chemical reaction you can determine the molar masses of the products because the combined molar masses of the reactants equals the combined molar masses of the products.
16 molar.