Pool Info: Pool Chloramines. When any type of chlorine is added to water, it forms hypochlorous acid (HOCl - the most powerful killing form of chlorine in water) and hypochlorite ion (OCl-), a relatively weak form of chlorine in water. The percentage of HOCl and OCl- is determined primarily by the pH of the water.
Costa Rica is located between 8 and 12 degrees north of the  Equator. The total distance is 888.17 miles or 1429.36 kilometers.
The initial bearing on the course from Costa-Rica to San-Francisco is 315.31Â° and the compass direction is NW. Midpoint: 24.99598,-100.87883. The geographic midpoint between Costa-Rica and San-Francisco is in 1,541.40 mi (2,480.65 km) distance between both points in a bearing of 315.31Â°. It is located in Mexico, Coahuila, Saltillo (MÃ©xico, Coahuila de Zaragoza, Saltillo).