Page 133 - Chemistry

(i) Name the polymer above..................................................................................
(ii) Determine the value of n if giant molecule had relative molecular mass of 4956
-
+
+
-
35. RCOO Na and RCH 2OSO 3 Na are two types of cleansing agents;
i) Name the class of cleansing agents to which each belongs
ii) Which one of these agents in (i) above would be more suitable when washing with water
from the Indian ocean. Explain
iii) Both sulphur (IV) oxide and chlorine are used bleaching agents. Explain the difference
in their bleaching properties

36. The formula given below represents a portion of a polymer

H H H H

C C C C

O H O H

n
(a) Give the name of the polymer
(b) Draw the structure of the monomer used to manufacture the polymer

Radioactivity
1. Complete the following equation by determining the values of U and V.
234 u 0

Th Pa + e

90 v -1

U……… V……………..

2. (a) Distinguish between nuclear fusion and fission
(b) Compete the nuclear equation below:-
230 230

90 91 +
3. Uranium -238 disintegrates by emitting an alpha particle to form substance Y.
Nuclide Y emits a beta particle to form substance Z. Write down nuclear equations to show how
substance Y and Z are formed (U=At No. 92)

4. (a) What is a nuclide?
(b) The graph below shows the radioactive decay of a certain nuclide. Determine the
half-life of the nuclide

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