A greenhouse manager dissolves a pound (454 grams) of fertilizer in 50 gallons (1 gallon equals 3785 grams) of water. The fertilizer contains 10% nitrogen. a. How many grams of nitrogen were dissolved in the water? b. What is the concentration of nitrogen in the water, in ppm? c. For continuous watering of greenhouse plants, it’s best to keep the nitrogen content less than 50 ppm. Should this mixture be used for continuous watering?
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