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### Angstrom?

Posted: Fri Oct 12, 2018 1:05 pm
What is an Angstrom and how is it applied in the lab?

### Re: Angstrom?

Posted: Fri Oct 12, 2018 1:12 pm
An angstrom is just a unit of length (think meter as another example) that is equal to 1*10^-10 m or 0.1 nm. I know Dr. Lavelle mentioned that angstroms are used to express wavelengths, so they are probably applied in lab in that way as well.

### Re: Angstrom?

Posted: Fri Oct 12, 2018 1:14 pm
It's important to remember that angstrom is only a measure of distance (meters), so be careful not to call 1 x 10^-10 an angstrom, because it could be 1 x 10^-10 liters or moles or anything, and angstrom wouldn't fit in anything other than meters.

### Re: Angstrom?

Posted: Sat Oct 13, 2018 3:21 pm
An angstrom is equivalent to 1x10^-10 m and Dr. Lavelle stated that it would be common to find wavelengths to the ^-10m, therefore, the angstrom is used for convenience in writing these lengths.

### Re: Angstrom?

Posted: Sat Oct 13, 2018 9:13 pm
An angstrom is just another unit name for 10^10 meters. So use this if your answer is in meters and is above this amount for a reasonable unit. It's like measuring a road as you would'nt give the distance in centimeters unless specifically asked to for a 4000 m stretch of road.

### Re: Angstrom?

Posted: Sun Oct 14, 2018 5:36 pm
An Angstrom is a short hand way to show the approximate distance of the diameter of 1 hydrogen atom. It is used primarily to show wavelengths and intermolecular distances.

### Re: Angstrom?

Posted: Sun Oct 14, 2018 11:26 pm
You'll commonly see it written as Å in this class for exams, etc, and it is used to measure the size of atoms/molecules, the length of chemical bonds, or the wavelengths of electrochem radiation. It is equivalent to 1.0 × 10-10 meters, but its not an SI unit. For example, hydrogen is about 0.5 Å, while chlorine and sulfur are 1 Å.

### Re: Angstrom?

Posted: Mon Oct 15, 2018 11:14 pm
An angstrom(Å) is a non- SI unit equal to 10 to the -10th meters. This is a valuable unit because it is around the value of wavelengths of light and interatomic distances (ex. diameter of a hydrogen atom).

### Re: Angstrom?

Posted: Tue Oct 16, 2018 5:47 pm
An Angstrom is the diameter of 1 Hydrogen atom, or 10^-10. We use this, because SI units go by 3s.