w/w- an abbreviation for by weight, used in chemistry and pharmacology to describe the concentration of a substance in a mixture or solution. Properly speaking, 2% w/w means that the mass of the substance is 2% of the total mass of the solution or mixture. The metric symbol g/g has the same meaning as w/w.
Midlothian's old motto. Midlothian is a city in northwest Ellis County, Texas, United States. The city is 5 miles (8.0 km) southwest of Dallas. It is the hub for the cement industry in North Texas as it is the home to three separate cement production facilities, as well as a steel mill.
Chesterfield County. 1  Banner Christian School, Richmond. 2  Chesterfield Community High School, Chester. 3  Clover Hill High School, Midlothian.  Cosby High School, 1  Midlothian. James River High School, Midlothian.  Joseph Mastin School at Bon Air, Bon 1  Air. Lloyd C. Bird High School, Chesterfield.  Manchester High School, Midlothian.