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gogolik [260]
3 years ago
14

What is a biome?

Chemistry
2 answers:
Vlad [161]3 years ago
5 0
An area with landscape, plants, climate, animals
user100 [1]3 years ago
4 0

Answer:

An area with the same climate, landscape, plants, and animals.

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Water Fluoridation and Cancer Risk
Diano4ka-milaya [45]

If you have a concern about fluoride in your drinking water,  you can get more information by contacting the local community water system and is denoted as option D.

<h3>What is Water?</h3>

This is referred to as a universal solvent and is usually colorless and used for various purposes such as drinking, washing etc.

Fluoride is added to water by the the community water system as it helkps to build strong teeth and cavities thereby preventing tooth decay. They know the concentration which is added to the water which is why they need to be contacted for more information.

Read more about Water here brainly.com/question/5060579

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4 0
1 year ago
How could the appearance of a substance change with out it becoming a different substance
gtnhenbr [62]

Answer:

When water melts from ice to liquid, or boils and becomes a gas, it is still water.

Explanation:

3 0
4 years ago
The student dissolves the entire impure sample of in enough distilled water to make of solution. Then the student measures the a
GuDViN [60]

Answer:

Check explanation

Explanation:.

NOTE: kindly check for attached file/picture for the graph.

From the graph of absorbance against concentration from the question. We can see that the 0.3 mark absorbance is equivalent to 0.15 M. So, the concentration of CuSO4 is 0.15 M.

The concentration can also be calculated using the Beer-lambert equation for absorbance. The equation is given below;

A= ɛ×C×l --------------------------------------------------------------------------------------(1).

Where A= absorbance, ɛ= molar absorptivity, C= concentration and l= length.

Therefore, the concentration,C will now be; C= A/ ɛ×l. -------------------------------------------------------------------------(2).

Assuming the length,l is 1cm.

Hence, C= 0.300/ ɛ×1.

C= (0.300/ ɛ) M.

4 0
3 years ago
Which part of metallic bonding theory helps the most to explain why metals are able to conduct electricity?
devlian [24]

Explanation:

The metallic bonding theory basically states  that valence electrons are free, delocalized, mobile, and not associated with any particular atom. It is pften regarded as a sea of electrons surrounding te atoms.

Metals are able to conduct electricity because of the free movement of the electrons (they are not bounded to a particular atom). Hence, electricity can be defined as the movement of electrons.

3 0
3 years ago
What does a red shift indicate about a galaxy?
Ad libitum [116K]
The only cause we know of that could shift the spectrum of a source toward longer wavelengths isthe source moving away from us. That's how we interpret the red shift when we see it, and that's where the whole idea of the expanding universe comes from. But ... just like gravity and the Earth going around the sun ... it can't be proved, so it's "only a theory".
6 0
3 years ago
Read 2 more answers
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