2 years ago

Which one of the following forces is a contact force force of gravity or force of friction

1 answer:

3 0

Answer:

a force of friction would be like something moving that suddenly stops because of the texture of another object while a force of gravity would be something falling and gravity pulling it down :) hope this helps

Explanation:

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What is the ratio of the magenta phenolphthalein concentration to the colorless phenolphthalein concentration ([magenta phenolph

lilavasa [31]

Answer:

$\frac{[magenta\ phenolphthalein]}{[colorless\ phenolphthalein]}=31.62$

Explanation:

Considering the Henderson- Hasselbalch equation for the calculation of the pH of the buffer solution as:

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Where Ka is the dissociation constant of the acid.

pKa of phenolphthalein = 9.40

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$10.9=9.40+\log\frac{[magenta\ phenolphthalein]}{[colorless\ phenolphthalein]}$

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2 years ago

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GrogVix [38]

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See Explanation

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Which one of the following forces is a contact force force of gravity or force of friction​

Which one of the following forces is a contact force force of gravity or force of friction