1. Определите эквивалентную массу пластической серы в реакции с кислородом. 2. Эквивалентная масса серы в реакции с водородом равна 16.00 г/моль. Определите валентность серы в полученном соединении и запишите формулупродукта реакции.3. Элемент образует два оксида, содержание кислорода в одном из них составляет 10.30%б а в другом – 16.06%. Определите неизвестный элемент, запишите формулы упомянутых оксидов.Кто откликнется заранее )

1. I played football yesterday. --> I have played football recently. --> I was playing football yesterday all day long. 2. I worked with my mother at home yesterday. --> I have already worked with my mum. --> I was working with my mom yesterday. 3. I went to the cinema last week. --> I have gone to the cinema recently. --> While I was going to the cinema, my friend broke his leg. 4. I didn't do my homework. --> I haven't done my homework yet. --> I wasn't doing my homework all day long. 5. I made an apple pie one month ago. --> I have already made an apple pie. --> I was making an apple pie when you came home.