Fe+H2CO3 решите пожалуйста.

Камень,объёмом 7,5 дм³ имеет массу 18,7 кг.Какую силу надо приложить к камню,чтобы удержать его в воде?

Здравствуйте! Напишите пожалуйста сочинение по рассказу "Преступление и Наказание", про любого героя из рассказа, описать характер, черты, поведение и т.д, только не из интернета!)

1.                  Резисторы с сопротивлениями 2кОм и 8кОм соединены последовательно. На каком из них большее напряжение? Во сколько раз?

Спасибо огромное за помощь!:) 

Express the same in one sentence. Use Complex Object

1. My friend is coming to see me after dinner. I expect him. 2. She played the piano at the party. I heard it. 3. I would like you to do something for me. Read this story aloud. 4. Peter wants to make the birthday cake himself. Let it be so. 5. Our footballers won that important match. We watched them when it happened. 6. Will Uncle Jim take Alex out for dinner? Alex wants it so much. 7. The thief entered the house very quietly. Nobody noticed him. 8. They are planning to spend the weekend at home. I wouldn't like it very much. 9. The train arrived five minutes early. No one expected it. 10. Liza didn't want to recite her poem. We made her.