Polar compounds, on the. other hand, attract each other and bind close. Water has a lot of. hydrogen bonding and is particularly dense.) Chemical Properties: Combustion: Hydrocarbons easily combust in the presence of oxygen. They are commonly used for fuel. Wood, fuel oil, gasoline, diesel, and.
The Boston Marathon is an annual marathon hosted by several cities in greater Boston in eastern Massachusetts, United States. It is always held on Patriots' Day, the third Monday of April. Begun in 1897, inspired by the success of the first marathon competition in the 1896 Summer Olympics, the Boston Marathon is the world's oldest annual marathon and ranks as one of the world's best-known road racing events.
The 117th Boston Marathon began in the morning from Hopkinton, Massachusetts, with some 23,000 participants. At around 2:49 that afternoon, with more than 5,700 runners still in the race, two pressure cooker bombs hidden in backpacks exploded within seconds of each other near the finish line along Boylston Street. Three people died: a 23-year-old woman, a 29-year-old woman and an 8-year-old boy. Among the scores of others who were injured, more than a dozen people required amputations. On the evening of April 18, the FBI released photos of two male suspects sought in connection with the bombings.