August 2018 1 45 Report
Znając wzór ogólny alkanów (CnH₂n+₂) oblicz liczbę atomów węgla dla węglowodoru o masie cząsteczkowej 212u.

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Streścić tekst Błagam o POMOC. DAJE NAJNA DZIŚNear Cracow, in southern Poland is the Wieliczka Salt Mine. Not much can be seen above the surface, but visitors are taken down into a hidden world of natural and man- made wonders.According to a 700-year-old legend, a princess called the Blessed Kinga threw her ring into a salt mine at Marmaros in Hungary. While travelling from Marmaros to Cracow.she stopped at Wieliczka and her servants were told to ding a well. Instead of water was, slat was discovered- and in the first lump of salt which was taken out, Kinga's ring was found!The legend is just a story- but it is true that for over seven centuries salt has been mined form the rock below the town of Wieliczka. The salt used to be gug out by hand , and until 1620 it was carried up to the surface by the miners. After that date , horse were used to carry the salt out, but the work was still very dengerous and many miners were killed or injures. The constant danger made the miners deeply religious and chapels were constructed underground where church services were held. After a chapel was destroyed be fire in 1697, miners were not allowed to take wooden statues into the mine so they began to carve sculptures from rock salt. Nowadays visitors are shown how salt was mined long ago, and can see the enormous chamber which have been dug out of the solid rock. They can also see pretty green lakes, and chapels with beautiful carvings.The walls and floor of the capel, as the lovely statues it contains, have been carved from rock salt.A special attraction is the Chapel of the Blesses Kinga , which was made by the miners themselves in a chamber 100meters underground. There are also 250 kilometres of tunnel and underground caves with huge salt crystals in strange shapes.You will be amazed by these unforgettable sightswhich should definitely not be missed by any visitor to the Cracow area.Błagam !!!
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