Вапняк (CaCO3) кількістю речовини 2 моль прожарили. Обчисліть кількість речовини (моль) оксидів що утворилося внаслідок цього. ​

перевидите                                                                                                                                             This is my dad.Heis the head of the family.He is a computer programmer.He is brave,strong,athletic and friendly.He likes travelling and doing outdoor activities.                     Mum works in the Science Museum in London. She is a guide.She likes to be well-dressed.Her favourite colours  are green and light blue.She is very kind and loving. She likes reading,cooking and spending her free time with me and my little sister Ann.