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Maurinko [17]
2 years ago
14

Kathy is going to do an experiment in which she will grow bacteriain four prepared petri dishes:

Chemistry
1 answer:
mash [69]2 years ago
8 0

Unwashed ==> Most bacteria

Sanitizer == Will have less than Unwashed

Washed ==> least amount of bacteria

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Answer:

1) <em>The correct answer is A. Collision</em>

2) A hot solvent helps a solid dissolve faster because an increase in <u><em>kinetic energy</em></u> that also increases the rate of collisions

Explanation:

When a solute is added into a solvent and stirred, the solute particles get distributed to all parts of the solvent as a result of stirring.

More collisions occur between the solute and the solvent due to stirring. This increases the rate of dissolving.

<em>When a solvent is heated, then the kinetic energy would increase and the atoms will collide with a much greater force. As a result, ore solute will be able to dissolve in the solvent. </em>

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<u>Answer:</u>

I think it's (C)

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What is the density of a liquid that has a mass of 27g and a volume of 30mL?
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