1 year ago

a sloution has a very high hydroxide ion concentration.based on this what would your predit about this sloution

1 answer:

7 0

Answer: t has a very low pH. It will have a very slippery feeling.

Explanation: It has high concentration of hydroxide ions · Explanation: pH is the negative logarithm of hydrogen in concentration

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A convex lens of focal length 35 cm produces a magnified image 2.5 times the size of the object. What is the object distance if

Zanzabum

Answer:

Image distance is -52.5 cm

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Explanation:

u = Object distance

v = Image distance

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Lens equation

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{35}=\frac{1}{u}+\frac{1}{-2.5u}\\\Rightarrow \frac{1}{35}=\frac{3}{5u}\\\Rightarrow u=21\ cm$

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Image distance is -52.5 cm

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