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.
Carson County, Texas. Carson County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 6,182. The county seat is Panhandle. The county was founded in 1876 and later organized in 1888. It is named for Samuel Price Carson, the first secretary of state of the Republic of Texas.