реактив для распознания катионов Fe3+

Составь план на тему Значение воды.

есть значок Є он означает принадлежность. а еще есть знак С. что он означает, как отличить их? где какой используется?

The John Rylands Library grammar for revision : simple past / simple past passive. Слова ( Design,house, light , depict , view, place , take , open, equip, choose , make , pay, join , build) It was built during the 1890s in memory of a Manchester cotton merchant John Rylands.Now Manchester (...) on the map as home of one of the finest libraries in the country. Ten years (....) to build the Library. It (...) to the public on 1 January 1900. It remained an independent library until 1972 when it (...) together with Manchester University Library. Rare books and manuscript collections (...) in this third largest academic library in the United Kingdom. The Library was one of the first public buildings in Manchester thet (....) by electricicty. The building (....) also (....оснащено....) with air-conditioning to reduce pollution. Sixty learned men (....) in the stained glass window to represent different branches of knowledge.Each figure (....) carefully by Mrs Rylands, to inspire the work of scholars in the Library.Mr and Mrs Rylands in white marble statues can also (.....) by the visitors at the opposite ends of the Reading Room.Their marble statues (....) by the Manchester sculptor John Cassidy.

задача по математике: 2 пачки печенья по 200г,а чаю 2 пачки по 50 г каждая, поставь вопрос и реши задачу