Problem: The nitrogen in sodium nitrate and in ammonium sulfate is available to plants as fertilizer. Which is the more economical source of nitrogen, a fertilizer containing 30.0% sodium nitrate by weight and costing $9.00 per 100 lb or one containing 20.0% ammonium sulfate by weight and costing $8.10 per 100 lb.

🤓 Based on our data, we think this question is relevant for Professor Kahvand's class at City Colleges of Chicago-Richard J Daley College.

FREE Expert Solution

sodium nitrate → NaNO3 → MM is 84.99 g/mol

ammonium sulfate → (NH4)3SO4 → MM is 150.18 g/mol

Calculating the amount of N per $. For NaNO3:

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Problem Details

The nitrogen in sodium nitrate and in ammonium sulfate is available to plants as fertilizer. Which is the more economical source of nitrogen, a fertilizer containing 30.0% sodium nitrate by weight and costing $9.00 per 100 lb or one containing 20.0% ammonium sulfate by weight and costing $8.10 per 100 lb.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. You can view video lessons to learn Mass Percent Formula. Or if you need more Mass Percent Formula practice, you can also practice Mass Percent Formula practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Kahvand's class at City Colleges of Chicago-Richard J Daley College.