A 100 lb bag of 20105 fertilizer is 200 nitrogen by, Ask an Expert

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A 10.0 lb bag of 20:10:5 fertilizer is 20.0% nitrogen by weight.

a) Calculate how many grams of nitrogen are contained in the bag. (I got 907 grams of Nitrogen)

b) If the bag of fertilizer covers 8.6 x 10^4 ft^2, calculate the number of grams of nitrogen per square foot of coverage.

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