Calculating Mole Ratio from Mass Ratio of N,P,K

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SUMMARY

The mole ratio of nitrogen (N), phosphorus (P), and potassium (K) from a mass ratio of 10:11:14 is calculated to be 20:10:10. To derive this, one must convert the mass of each element into moles using their respective molar masses. The process involves determining the number of moles for each element and then simplifying the ratios to the nearest whole numbers. The correct answer is option C) 20, 10, 10.

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Mass ratio of N,P,K is 10 11 14, what is the mole ratio?

a) 14, 11, 10
b) 28,11,10
c) 20, 10, 10

The answer is C) but i don't understand how to get there... can anyone help me get started?
 
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Convert to mole values using the formula weights of each element. Then compare using closest whole number ratios.
 
You may need to do some common factor or common divisor operation to obtain that "whole number ratio" relationship.
 
Larrytsai said:
Mass ratio of N,P,K is 10 11 14, what is the mole ratio?

a) 14, 11, 10
b) 28,11,10
c) 20, 10, 10

The answer is C) but i don't understand how to get there... can anyone help me get started?

There will be 10 parts (grams or tons, or pounds, etc...) of N, 11 parts of P and 14 parts of K. Convert that to moles using units that you are familiar with.

Hint: Don't use tons...
 

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