Atmospheric Co, at Mauna Loa Observatory Scripps Institution of Oceanography
NOAA Earth System Research Laboratory
380
360
PARTS PER MILLION
340
320
1980
1970
2000
2010
1980 1990
YEAR
The graph indicates what about the relationship between atmospheric carbon dioxide and
time
o over time, the amount of atmospheric carbon dioxide decreases
over time, the amount of atmospheric carbon dioxide increases
over time, the amount of atmospheric carbon dioxide stays the same
O over time, the amount of atmospheric carbon dioxide does not change

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

there are two significant figures.

d

explanation:

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.