When you open a perfume bottle at a corner of a room, after a while, its fragrance can be perceived across a distance at the other end of the room. This is because, molecules of the compound in the fragrance have moved from the area of higher concentration in the perfume bottle, across a concentration gradient to a region of lower concentration at the other end of the room. This is diffusion.

7 0

3 years ago

SOLVE IT AND HERE'S 30 POINTS In the Northern Hemisphere, the sun is highest in the sky during the _____.

Oksanka [162]

the answer is b) summer solstice

5 0

4 years ago

If 2.0 g of water at 0.00°c is to be vaporized, how much heat must be added to it? the specific heat of water is 1.0 cal/g·k, it

krok68 [10]

45 hope it helps hope you get a good grade

6 0

3 years ago

How many metals are on the periodic table?

Blababa [14]

There are 84 metal elements

3 0

4 years ago