Gel permeation chromatography is used to determine the number average molecular weight, weight average molecular weight, and polydispersity.

Each has a molecular weight of approximately 50,000 Daltons.

(Laughter)

Many higher molecular weight amines are, biologically, highly active.

And I thought molecular weight sounded much less nerdy than molar mass.

However, it was difficult to determine the exact molecular weight and number of amino acids in a protein.

Sir, I want to give you the periodic table, in case you're ever in a bind and need to calculate molecular weight.

In this way Einstein was able to determine the size of atoms, and how many atoms there are in a mole, or the molecular weight in grams, of a gas.

And then afterward, I said, Sir, I want to give you the periodic table in case you're ever in a bind and need to calculate molecular weight.

Separation of proteins may be by isoelectric point (pI), molecular weight, electric charge, or a combination of these factors.

The combination is theoretically useful because it results in good removal of both large and small molecular weight solutes.

Fortunately, fluorine consists of only a single isotope 19F, so that the 1 difference in molecular weights between 235UF6 and 238UF6 is due only to the difference in weights of the uranium isotopes.

This method only gives a rough measure of the amounts of different proteins in the mixture, and it is not able to distinguish between proteins with similar apparent molecular weight.

Proteins are separated according to isoelectric point (pH at which they have neutral net charge) in the first dimension, and according to their molecular weight in the second dimension.

This is the molecular structure of adenine.

The nearly neutral theory of molecular evolution is a modification of the neutral theory of molecular evolution that accounts for slightly advantageous or deleterious mutations at the molecular level.

KAtomic

You know what the molecular structure is.

My favorite moving molecular lab.

Let's say I took some molecular hydrogen, it's in a gaseous state, and I were to combust that with some molecular oxygen.

Weight

Weight?

This is how you work at the molecular scale.

And we've been given 1 mole of the oxygen molecule.

I mean, big piece at the molecular level.

And the same thing is true for the molecular oxygen.

As xenon is expensive, the gas sulfur hexafluoride, which is similar to xenon in molecular weight (146 versus 131), is generally used in this stunt, and is an asphyxiant without being anesthetic.

Weight, you see, depends on the area of this column of air.

For weight loss

It s very hard to explain this by molecular recognition.

And so that is what is cooling you down at a molecular level.

It's very hard to explain this by molecular recognition.

So I started to educate myself on this molecular level.

The molecular chlorine has broken up into two chlorine atoms.

Okay, here's a question, speaking of weight loss, specifically weight, this speech is live.

If it's a blueish color, it means 16 percent by weight.

Atomic weight of carbon.

We're all done balancing.

And to lose some weight.

Two Gain weight.

How much does it weigh?

You're heavy.

Weight 52 pounds.

The mean molecular mass of air is 28.97 g mol.

Sami lost weight.