Ratios for 10% Solution: How to Calculate for 4oz/1gal Ratio

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SUMMARY

The discussion centers on calculating the correct amount of substance needed for a 10% solution in 1 gallon of water, specifically addressing the confusion around the figure of 42.68 ounces. The correct calculation for a 10% solution requires 12.8 ounces of substance, as 10% of 128 ounces (the volume of a US gallon) equals 12.8 ounces. The conversation also highlights the importance of specifying the type of gallon used, as US and Imperial gallons differ significantly in volume.

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  • Knowledge of fluid volume conversions between ounces and gallons
  • Familiarity with the difference between US and Imperial gallons
  • Basic arithmetic skills for calculating percentages
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Homework Statement



4 ounces of substance for a 10% solution for 1 gallon of water

Homework Equations





The Attempt at a Solution



42.68 ounces of substance per gallon? to make a 10% solution in water?
 
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YoderIII said:

Homework Statement



4 ounces of substance for a 10% solution for 1 gallon of water
This doesn't make sense to me. Is this the exact problem description?
YoderIII said:

Homework Equations


The Attempt at a Solution



42.68 ounces of substance per gallon? to make a 10% solution in water?
How did you get 42.68 oz? There are 128 oz. in a gallon. Show how you calculated this and we can set you straight.
 
Last edited:
YoderIII said:

Homework Statement



4 ounces of substance for a 10% solution for 1 gallon of water

Homework Equations


The Attempt at a Solution



42.68 ounces of substance per gallon? to make a 10% solution in water?

What type of gallon do you mean? US Gallon? Imperial Gallon? These are quite different, and this forum is international, not purely American.
 
Last edited:

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