How many ounces of a 11% alcohol solution must be mixed with 2 ounces of a 20% alcohol solution to make a 13% alcohol solution?
ounces.
the number of ounces of the 11% alcohol solution that needs to be mixed is
(simplify your answer.)

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

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