Осуществить превращения: 

Cu --- Cu (nO3)2 ---Cuo --- CuCl2---Cu ( OH)2 ---Cuo

Я люблю читати книжки(5-7 реченнь)Допоможіть ,будь ласка,дуже треба!!!

Помогите пожалуйста написать уравнения реакций химических свойств альдегидов на примере бутаналя

Вставьте пропущенные слова:

rainy ♦  happy ♦  boring ♦  dark ♦  perfect ♦  interesting  ♦ stupid  ♦ cold ♦big  ♦ miserable ♦  sunny  ♦ better  ♦ small ♦ funny  ♦ hot  ♦ good ♦  terrible ♦  disgusting ♦  delicious ♦  light ♦

1) Dear Sam

Hi, how are you? It's awful here. I hope you're having a ......... holiday than we are. The weather's ............. . Every day has been ............... and ................, so we stay indoors all day. The food in the hotel is ................ - I just can't eat it! Our room is at the back of the hotel and it's ................ and ............... . There's no room for all our things. There's nothing to do. I've read three very ................ books and watched some ..................... quiz shows on TV. I'm so ................... . I can't wait to get home!

Robbie

2) Dear Robbie

Hi, how are you?

It's great here. We're having a really ............... holiday. We've been very lucky with the weather - it's ..................... . We go to the beach every day because it's ........................ and ....................... . The food in the hotel is ................... . I've aeten a lot. Our room has three beds in it and looks out over the sea, it's so ....................... and ............... . I've read three very .......................... books about the history oh this area. In the evenings we've watched some ..................... films on TV - and laughed. I'm so ...................... here. I don't want to go home!

Sam