Glencoe Chemistry: Matter and Change, Student Edition
Glencoe Chemistry: Matter and Change, Student Edition
1st Edition
ISBN: 9780076774609
Author: McGraw-Hill Education
Publisher: MCGRAW-HILL HIGHER EDUCATION
Expert Solution & Answer
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Chapter EH, Problem 45R
Solution

Interpretation: The percentage of the fertilizer that is nitrogen needs to be calculated.

Concept Introduction: The percentage of A in B can be calculated as follows:

  %=mass of Amass of B×100%

Here, the mass of A and B should have the same unit.

15%

The percentage of fertilizer that is nitrogen can be estimated by simply calculating the percentage of nitrogen in the fertilizer.

Here, the mass of the bag of fertilizer is 35 kg and the mass of nitrogen this fertilizer contains is 5.25 kg.

The percentage of the fertilizer which is nitrogen can be calculated as follows:

  %=mNmfertlizer×100%

Substitute the values,

  %=5.25 kg35 kg×100%=15%

Thus, the percentage is 15%.

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