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Contaminations with environmental samples
pipetting errors
What else can I help you with?
What is the molar mass of SiC?
Molar Mass of Carbon + Molar Mass of Silicon = Molar Mass of SiC. 12.0107 + 28.0855 = 40.0962 g / mol.
Is avogadro's number the same as molar mass?
no youre thinking of molar mass and atomic weight although you use avogadro's number to find molar mass
Is flux a vector?
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
How do you calculate molar volume of ideal gas?
Use Boyle's law
What does mm stand for in weight?
Are you thinking of Mm? Molar mass. Or millimeters?
What are the major sources of error in your determination of the molar mass -?
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).
How do you determine the number of atoms for each element in a chemical formula?
A chemical analysis and a molar mass determination are needed.
What effect Dimers molar mass determination volatile liquids?
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?
How is molar mass determination achieved through the process of freezing point depression?
Molar mass determination through freezing point depression involves measuring the decrease in freezing point of a solvent when a solute is added. By comparing the change in freezing point to the known properties of the solvent, the molar mass of the solute can be calculated using the formula Tf Kf m, where Tf is the change in freezing point, Kf is the cryoscopic constant of the solvent, and m is the molality of the solute.
What are the major sources of errors in determining the molar mass?
Sources of error are: isotopic compostion of elements, Atomic Mass of isotopes.
How is the determination of molar mass achieved through the phenomenon of freezing point depression?
The determination of molar mass is achieved through freezing point depression by measuring the decrease in the freezing point of a solvent when a solute is added. This decrease is directly proportional to the molality of the solute, allowing for the calculation of the molar mass of the solute using the formula: Tf Kf m i, where Tf is the freezing point depression, Kf is the cryoscopic constant of the solvent, m is the molality of the solute, and i is the van't Hoff factor.
What is the precaution steps in the experiment of the determination of the molar mass of a volatile liquid?
Ensure proper ventilation in the lab to prevent inhalation of fumes. Handle the volatile liquid in a fume hood to minimize exposure to vapors. Use appropriate personal protective equipment, such as gloves and goggles, when handling the liquid. Keep the experimental setup away from open flames or heat sources to prevent accidental ignition.
What is the molar mass of KC2H3O2?
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')
What is the molar mass Na?
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.
If an insufficient amount of a liquid unknown had been used how would this affect the value of the experimental molar mass?
When the unknown liquid is heated and turned into vapor, the unknown will not occupy the whole container. In the equation to find the molar mass (nRT)/PV, the volume will be greater than the actually volume of the unknown, thus leaving a molar mass that is less than the actual molar mass
What is the molecular formula of the compound CH2 with molar mass equals 168?
The molecular formula of the compound CH2 with a molar mass of 168 is C7H14. This molecular formula satisfies the condition of having two hydrogen atoms bonded to each carbon atom, resulting in a molar mass of 168 g/mol.
Suppose the thermometer is miscalibrated to read 0.3C higher Does this error in calibration result in the molar mass of the vapor in the flask being reported as too high or too low or as unaffected?
The error in calibration would result in the molar mass of the vapor in the flask being reported as too low. This is because the measured temperature is higher than the actual temperature, leading to a lower calculated molar mass.
