To remove green stains from a wall, spray the wall with _____ .
A. a muriatic acid solution
B. water
C. a solution of potassium or sodium hydroxide
D. a solution of acetic acid and hydrogen peroxide
Answer: C
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What will be an ideal response?
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The concept of an equivalent weight, EW, may also be useful in calculations involving aqueous solutions. The Equivalent Weight of any specie, EWi, is equal to the molar mass divided by the number of equivalents associated with the dissolved ion.
What will be an ideal response?
What functions are served by the xylem and phloem?
What will be an ideal response?