Answer:
U = 12,205.5 J
Explanation:
In order to calculate the internal energy of an ideal gas, you take into account the following formula:
(1)
U: internal energy
R: ideal gas constant = 8.135 J(mol.K)
n: number of moles = 10 mol
T: temperature of the gas = 100K
You replace the values of the parameters in the equation (1):
![U=\frac{3}{2}(10mol)(8.135\frac{J}{mol.K})(100K)=12,205.5J](https://tex.z-dn.net/?f=U%3D%5Cfrac%7B3%7D%7B2%7D%2810mol%29%288.135%5Cfrac%7BJ%7D%7Bmol.K%7D%29%28100K%29%3D12%2C205.5J)
The total internal energy of 10 mol of Oxygen at 100K is 12,205.5 J
Motion must be defined relative to something.
Here's an obvious, everyday example:
-- You're in a passenger jet, going to visit grandma on the
coast for the holidays.
-- You're sitting still in your seat, listening to some 'mp3's,
reading a book, and dozing off.
-- At the same time, people on the ground see you flying over
at almost 500 miles per hour.
Are you moving at 500 mph, or are you not moving at all ?
The answer is 'Yes. Both.'. It just depends on who's measuring your speed.
There's no such thing as your "real" speed. Motion is always
relative to something. Different reference = different speed.