( 15. Write equations to show how carbon dioxide reacts with
Sodium hydroxide solution and state what would be
observed. (1 mark)
16. Name one process in each case by which the concentration
of carbon (IV) oxide in the atmosphere is
(a) Increased. (1 mark)
(b) Decreased. (1 mark)
21.1
2
17. (a) What is amorphous carbon. (1 mark)
(b) Give examples of amorphous carbon. (2 marks)
(C) State three uses of amorphous carbon. (3 marks)
18. (a) State three physical properties of carbon (IV) oxide.
(3 marks)
(b) State the uses of carbon (IV) oxide. (2 marks)
19. State two physical properties of carbon (II) oxide.
(2 marks)
20. Experiment was set as shown below.
To the​

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explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.