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"Human cells vary in size and volume. DNA is fixed in its size. That makes it kind of hard (like impossible) to state a concentration for DNA. Only a range can be given, and that information has little to no practical value and even less meaning."
Cell size and volume have nothing to do with the absolute amount of substance measured in mol, which is what the ill written question probably meant to ask.
Each human cell contain a genome of about 6*10e9 bp. One mol of whatever substance is comprised of ~6.022 10e23 molecules. Therefore if you were to degrade the genome to single nucleotides, you would get approx 10e-14 mol of these from any single diploid cells, that is 10 femtomol. In a million cells, you would have in the order of 100nmol.
The question might seem inane, but it HAS practical value. If you do have to actually totally digest genomic DNA like I had at some point, and you're given a definition of enzyme activity in unit based on nanomol of DNA, you just sit there and calculate
Now for molarity. While molarity wouldn't mean much, also because DNA is not really in solution in a nucleus, it is practically useful to know how much (mass of) DNA there is in a single cell.
The molecular mass of an average deoxyribonucleotide is 330 dalton. So one mol of it would weight 330g. Therefore 100nmol in your million cells above would weight 33ug. Which doesn't sound too far off, since DNA extraction yield for a million cells is actually around 8-10ug.
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∙ 13y ago
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Is molar strength the same as molar concentration?
It is not true, they are not identical.
How does the molar absorptivity depend upon the concentration mole per L of the dissolved solute?
Molar absorptivity is completely independent of concentration of a substance as Molar absorptivity is represented by epsilon and is a constant. Absorbance of light is what is dependent upon concentration and will go down as concentration goes down and increase as concentration increases.
What is molar conductivity at infinite dilution?
Molar conductivity at infinite dilution is when molar conductivity is limited. Molar conductivity is when electrolyte conductivity is divided by molar concentration.
Concentration of water in pure water?
The concentration of pure water is 55 molar. In other words, 1 liter of water holds 55 moles of H2O
How is volume related to molarity?
molarity simply means molar concentration. To calculate molar concentration, c: c = n / V where c=molar concentration (moldm-3) n=number of moles V=volume(dm3) V can also be cm3 but it needed to be converted first to dm3.
What is the molar concentration of nitric acid?
16 molar.
Is molar strength the same as molar concentration?
It is not true, they are not identical.
How do you find molar concentration of chemical compounds?
The Stoichiometry of molar concentration follows this simple formula: Mol = Volume (dm³) × Molar Concentration (mol/dm³) Hence: Molar Concentration (mol/dm³) = Number of moles (mol)/ Volume (dm³)
If ferrous solution is stabilized with one molar sulfuric acid does that mean ferrous concentration is one molar?
Not necessarily or even usually. The term "one molar" refers to the concentration of the acid added and does not have anything to do with the concentration of ferrous ions.
How does the molar absorptivity depend upon the concentration mole per L of the dissolved solute?
Molar absorptivity is completely independent of concentration of a substance as Molar absorptivity is represented by epsilon and is a constant. Absorbance of light is what is dependent upon concentration and will go down as concentration goes down and increase as concentration increases.
Can you cite some examples in solving problems regarding with molar concentration?
Example: 0,5 molar concentration of sodium chlorideThe molar mass of NaCl is 58,44 g; so 0,5 molar is 29,22 g/L
How do you use molar in a sentence?
As adjective to concentration or mass: The molar concentration of concentrated sulfuric acid is about 18.0 (mol/L) The molar mass of H2SO4 is about 100 g (per mole)
What is molar conductivity at infinite dilution?
Molar conductivity at infinite dilution is when molar conductivity is limited. Molar conductivity is when electrolyte conductivity is divided by molar concentration.
Which concentration unit is independent of temp?
The unit of concentration is Molar = Moles/Litre.
Concentration of water in pure water?
The concentration of pure water is 55 molar. In other words, 1 liter of water holds 55 moles of H2O
How is volume related to molarity?
molarity simply means molar concentration. To calculate molar concentration, c: c = n / V where c=molar concentration (moldm-3) n=number of moles V=volume(dm3) V can also be cm3 but it needed to be converted first to dm3.
What is the concentration unit?
M. M stands for Molar, which is in moles/Liter. That's the unit of concentration.
