A process of pharmaceutical requires the room temperature to be lowered from 28°C at the rate of 4°C per hour. what would be the room temperature attained in 9hours after the process has begun?
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Answer:
Given that
Let us assume that the lowered temperature as negative,
Initial temperature = 40oC
Change in temperature per hour = -5oC
Change in temperature after 10 hours = (-5) × 10 = -50oC
∴The final room temperature after 10 hours of freezing process = 40oC + (-50oC)
= -10oC
The room temperature 10 hours after the process begins= -10oC
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