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Rudik [331]
3 years ago
6

Every enzyme contains a

Chemistry
1 answer:
Andrej [43]3 years ago
6 0

Answer:

polypeddite chain I guess

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Are pure substances chemically combined​
dmitriy555 [2]

Pure substances can or can not be chemically combined.

Pure substances can be either elements or compounds, but not mixture. Mixture are different substances mixing together without being chemically combined, such as air, which is a mixture of oxygen, carbon dioxide, water etc. Mixture can be separated by physical methods, like filtration or decantation.

Meanwhile, elements are the substances that cannot be further separated by any means. No matter physical or chemical methods. Examples of elements are oxygen, hydrogen, neon and all the other ones from the periodic table. Compounds are basically elements joining together, but they’re chemically combined which means their electrons (kind of subatomic particle) are either shared or given away. These elements can only be separated by chemical methods like electrolysis or heating.

Therefore, as long as the substance cannot be separated by physical methods, it can be considered as a pure substance. We can now conclude that pure substance can be (element) or can not be (compound) chemically combined.

4 0
4 years ago
The Galapagos Islands formed over a hot spot. The majority of the volcanoes here are ________________ volcanoes. A) shield B) ci
Diano4ka-milaya [45]
I think the answer would be shield volcanoes.
5 0
3 years ago
What are the characteristics of an extrusive rock
olya-2409 [2.1K]

Extrusive Rocks. Igneous rocks which form by the crystallization of magma at the surface of the Earth are called extrusive rocks. They are characterized by fine-grained textures because their rapid cooling at or near the surface did not provide enough time for large crystals to grow.

5 0
4 years ago
What is the pH of a 3.5 x 10-5 M solution of HCl?
Luden [163]

Answer:

pH = 4.45

Explanation:

We need to find the pH of 3.5\times 10^{-5}\ M solution of HCl. We know that, pH of a solution is given by :

pH=-log[H]^+

Put all the values,

pH=-log[3.5\times 10^{-5}]\\\\pH=4.45

So, the pH of the solution of HCl is 4.45.

5 0
3 years ago
What is the percent composition of sodium (na) in baking soda
vagabundo [1.1K]

Element                                          Symbol                                                   Mass Percent

Sodium                                           Na                                                          27.367%                  

4 0
3 years ago
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