A liter of water weighs a kilogram so 15 mg/kg = 15 ppm on a mass over mass basis. If that is the flavor of ppm you want, done. But ppm can also be computed on a volume basis, molar ratio, etc. It is better tio use a clear form with units that identifies the basis such as mg/kg.
Serena Williams knocked off Lucie Safarova in the final of the women's draw at the French Open, and Bovada has her listed as the clear favorite on the odds to win Wimbledon this year; Williams sits as the 7/4 chalk on those betting lines.
Federer has the third-best betting odds at Wimbledon, but he might be the biggest threat to Djokovic. Heâs won the tournament seven times, claiming the title last in 2012. On Sunday, he finished up the Gerry Weber Open by winning the title, defeating No.45 Andrea Seppi on grass for the victory.