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Beyond a 1:1 mixture of HCl and H 2 O, the system separates completely into two separate liquid phases. Hydrochloric acid forms an azeotrope with boiling point 108.58 °C at 20.22 g HCl per 100 g solution; thus hydrochloric acid cannot be concentrated beyond this point by distillation.
During the 2008/09 school year there were 1,502,257 students in the entire Swiss educational system. In kindergarten or pre-school, there were 152,919 students (48.6% female). These students were taught by 13,592 teachers (96.0% female) in 4,949 schools, of which 301 were private schools.
The Aztecs [a] (/ ˈ æ z t ɛ k s / AZ-teks) were a Mesoamerican civilization that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl language and who dominated large parts of Mesoamerica from the 14th to the 16th centuries.
This is an accepted version of this page This is the latest accepted revision, reviewed on 29 January 2025. Cancer that originates in mammary glands Medical condition Breast cancer An illustration of breast cancer Specialty Surgical Oncology Symptoms A lump in a breast, a change in breast shape, dimpling of the skin, fluid from the nipple, a newly inverted nipple, a red scaly patch of skin on ...