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Liula [17]
3 years ago
13

_6. Every chemical reaction always involves which of the following?

Biology
1 answer:
spayn [35]3 years ago
5 0

Well it can’t be (a) because matter does not change. I believe it would be (b) because eltricity had to be passed through
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What are the precautions that should be token when using a photometer? please help me​
Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

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4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

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I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0
3 years ago
What is a potential limiting factor for a wolf population?
lina2011 [118]

Answer:

complete your answer first

4 0
3 years ago
What is <br>1DNA<br>2 cytoplasm<br>3 cytoskeleton​
mezya [45]

Answer:

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Explanation:

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Hello!

By doing a dance on the hive
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viva [34]
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Read more on Brainly.com - brainly.com/question/9162415#readmore
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