The graph in Fig. 28 shows the change in
temperature of a block of ice when heated. Study
the graph and answer the following questions:
Time-Temperature Graph
120
100
80
60
Temperature (°C)
40
20
0
(a) What is the temperature at 30 seconds?
(b) Initially, for how many seconds did the ice
block show no change in temperature?
(c) For how long was there a change in
temperature?
d) After how many seconds of heating did the
temperature become constant at 100°C?
e) What could have been the temperature after
70 seconds?
0
10
60
70
20 30 40 50
Time (in seconds)
Fig. 28
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Step-by-step explanation:
Where is the graph ??
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