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JulijaS [17]
2 years ago
10

Determine whether each practice is recommended to keep a micropipette clean and functioning properly.

Chemistry
1 answer:
Natasha2012 [34]2 years ago
8 0

Answer:

1. A

2. B

3. B

4. A

5. B

Explanation:

1. Recommended. That way cross-contamination is prevented.

2. Not recommended. The inner mechanism of the micropipette should not come in contact with any liquid whatsoever.

3. Not recommended. It contradicts statement 1.

4. Recommended. That way the micropipette remains completely vertical, minimizing the risks of being decalibrated.

5. Not recommended. If it lays on the bench it will be horizontal, thus contradicting statement 4.

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Based on the information given about capsules, which of the following types of molecules would you suspect comprises an S. pneum
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A major human pathogen is Streptococcus pneumoniae or pneumococcus. The virulence is primarily due to its polysaccharide envelope, which protects it from the recipient immune response, and this has led to comprehensive study of the shell.

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3 years ago
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hope this helps!



7 0
3 years ago
What is the percent composition by mass of nitrogen in NH4OH?
Juliette [100K]
 <span>the atomic mass of nitrogen is 14. There is 1 nitrogen atom in the molecule so the percentage of N is :

14/35 x100% = 40%</span>
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3 years ago
What are the characteristics of an atom or molecule when in the gas phase
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Answer:vapor

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6 0
3 years ago
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Ava threw a hamster at her sister the other day she used 12N of force to accelerate the hamster at 8m/s2.what was the mass of th
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<u>We are given:</u>

The force applied on the poor hamster (F) = 12 N

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<u>Solving for the mass of the Poor Hamster:</u>

From newton's second equation of motion, we know that:

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<em>replacing the given values</em>

12 = 8 * m

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8 0
2 years ago
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