Сколько граммов NaNO3 необходимо вылить, для получения 300мл 0,2 молярного расствора?

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Объяснение:

Крекинг (англ. cracking, расщепление) — высокотемпературная переработка нефти и её фракций с целью получения, как правило, продуктов меньшей молекулярной массы — моторных топлив, смазочных масел и т. п. , а также сырья для химической и нефтехимической промышленности. Крекинг протекает с разрывом связей С — С и образованием свободных радикалов или карбанионов. Одновременно с разрывом связей С — С происходит дегидрирование, изомеризация, полимеризация и конденсация как промежуточных, так и исходных веществ. В результате последних двух процессов образуются т. н. крекинг-остаток (фракция с температурой кипения более 350 °C) и нефтяной кокс.

Крекинг относится первичным процессом переработки нефти, а риформинг ко вторым. Риформингу подвергаются бензиновые фракции с пределами выкипания 85-180°С. В результате риформинга бензиновая фракция обогащается ароматическими соединениями и его октановое число повышается примерно до 85. Полученный продукт (риформат) используется как компонент для производства автобензинов и как сырье для извлечения ароматических углеводородов.