1.составьте молекулярные , полное и сокращенные ионные уравнения реакций .
1 )гидроксид кальция + азотистая кислота .
2) гидроксид железа (3)+ СЕРНАЯ КИСЛОТА .
2.ЗАКОНЧИТЬ УРАВНЕНИЕ ПРАКТИЧЕСКИ ОСУЩЕСТВИМЫХ РАКЦИЙ В МОЛЕКУЛЯРНОМ И ИОННОМ ВИДЕ. НАЗВАТЬ ВЕЩЕСТВА
K2CO3+BACI2
CA(oh)2+na2co3

                The old woman brought out a large box and put it on the table. There were a lot of seashells in the box. She started taking them out — а blue-black shell (it was very big — like a woman's shoe), а рink shell, orange and lilac shells, and a white shell. There were a lot of different colours and shapes. Brenda liked them.

“Did you find all of them? ” she asked.

“Yes» I did. ” The old woman looked glad when she  put the shells on the table.

“I didn't know you could find these shells on the beaches, ” Brenda said.

“They are the flowers of the sea, ” the old woman said. “Put that big pink shell to your ear,” she said. “You can hear the sea. ” Brenda took the pink shell and listened. She heard a low hum.

"Do you hear it?” the old woman asked.

-Yes."

“My ear cannot hear it, ” the old woman said. “Will you come and see me again? I*ve got some other shells — little shells. I keep them in the other box.” “I*ll come tomorrow, after school, ” Brenda said.