Calculate the concentration in ppm of a pollutant that has been measured at 425 mg per 170. kg of sample.

Pauling and lewis questioned the extreme definitions of bonds. they wondered if bonds might be described somewhere in between the two extremes (covalent and ionic). on the basis of experimental data,pauling confirmed that bonds could be ionic, covalent, and for those, in between, exhibit a degree of ionic character. he theorized that the major factor was how strongly the atoms in the bond attracted the electrons. pauling called this factor - the tendency of an atom to attract electrons in a bond.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

How many atoms are there in 5.70 mol of mg