Question

15. Which of the following statements is true?
16
8 16 -4 8
(a)
21 9 9
5 9
9
17
9
.
(b).
10
3
-
10
3
17 10
40 3
21
20
40
20
(c) 0:
13
14
= 0
(d)
-15 22
22 -15
= 1​

Answer 1

Step-by-step explanation:

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Answer 2

in the reaction CuO(s)+H2(g)------Cu(s)+H2O(l). Pick out the following:
(I) the substance which is oxides
(ii) the substance which is reduced
(iii) the oxidising agent
(iv) the reducing agent