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Question
Biology
Posted 7 months ago

Calculate the weight, in grams, of Agent PP required in a static bath treatment of rainbow trout using a dosage of 2ppm/hr2 \mathrm{ppm} / \mathrm{hr} for a one hour treatment period. The raceway is 15 m15 \mathrm{~m} long by 3 m3 \mathrm{~m} wide by 2.5 m2.5 \mathrm{~m} deep
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Answer from Sia
Posted 7 months ago
Sure, let's address the question about calculating the weight of Agent P required for the static bath treatment of rainbow trout.

Answer
The weight of Agent P required is 225 grams.
Solution
a
Calculate the volume of the raceway: The raceway is 15 meters long, 3 meters wide, and 2.5 meters deep. The volume VV is given by V=length×width×depthV = \text{length} \times \text{width} \times \text{depth}. Therefore, V=15m×3m×2.5m=112.5m3V = 15 \, \text{m} \times 3 \, \text{m} \times 2.5 \, \text{m} = 112.5 \, \text{m}^3
b
Convert the volume from cubic meters to liters: Since 1 cubic meter is equivalent to 1000 liters, the volume in liters is 112.5m3×1000L/m3=112,500L112.5 \, \text{m}^3 \times 1000 \, \text{L/m}^3 = 112,500 \, \text{L}
c
Calculate the dosage in grams: The dosage is given as 2 ppm/hr for a one-hour treatment period. 2 ppm means 2 grams of Agent P per 1,000,000 grams of water. Since the density of water is approximately 1 g/mL, 1 liter of water weighs 1,000 grams. Therefore, 2ppm=2g/1,000,000g=2g/1,000L2 \, \text{ppm} = 2 \, \text{g} / 1,000,000 \, \text{g} = 2 \, \text{g} / 1,000 \, \text{L}. For 112,500 liters, the required weight of Agent P is 2g×112.5=225g2 \, \text{g} \times 112.5 = 225 \, \text{g}
Key Concept
Dosage calculation for a given volume of water in ppm.
Explanation
The key concept involves understanding the relationship between ppm (parts per million) and the volume of water to determine the required weight of a substance. In this case, converting the volume of the raceway to liters and then applying the given dosage in ppm allows us to calculate the necessary amount of Agent P.

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