The temperature of a liquid in an experiment starts at 0 C. The experiment calls for the temperature of the liquid to change at a rate of -0.8 C per minute. How long will it take for the liquid to reach -10.8 C?
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Answer:
14.5mins
Step-by-step explanation:
initial temp = 0
final temp = -10.8
Common diff: -0.8
From AP
An = A1 + (n-1)xD
-10.8 = 0 + (n-1)x (-0.8)
-10.8 = -0.8n + 0.8
0.8n = 10.8 + 0.8
0.8n = 11.6
n = 11.6/0.8 = 14.5mins
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