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Lynna [10]
3 years ago
11

What describes a property of matter ability to change into different substances

Chemistry
1 answer:
Brilliant_brown [7]3 years ago
8 0

Answer:

Chemical reaction

Explanation:

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Complete the drawing of the product of the diels–alder reaction, ignoring stereochemistry.
shepuryov [24]

Answer:

In Diels alder reaction

It's an Adduct that is fromed from the reactants

Explanation:

I.e diene + dienophile= Adduct

E.g 1,3-butadiene + ethene = cyclohexene

4 0
3 years ago
An example of a pure substance is ____.
Vsevolod [243]

Answer: e) all of these

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water  (H_2O), carbon dioxide (CO_2)

Mixtures are not pure substances as they consist of elements and compounds combined physically and not in any fixed ratio. Example: Air

Thus all given substances are pure substances.

6 0
3 years ago
A student made the Lewis dot diagram of a compound as shown.
Anton [14]

Answer:

the answer is number 2

Explanation:

4 0
3 years ago
Read 2 more answers
What does the period number tell about the energy levels occupied bye electrons in an atom
anyanavicka [17]

Answer:

The period number tells which is the highest energy level occupied by the electrons.

Explanation:

  1. The period number (denoted by n) is the outer energy level that is occupied by electrons in an atom.
  2. The period number that an element is in, is the number of energy levels that the element has.
  3. When we move across a period from left to right in a periodic table the number of electrons in atoms increases within the same orbit.
3 0
3 years ago
Current of 250. a flows for 24.0 hours at an anode where the reaction occurring is as follows: mn2+(aq) + 2h2o(l) → mno2(s) + 4h
Tju [1.3M]
From Faraday's 1st law of electrolysis,
Total electricity passed into system = Q = IT = 250 X 24 X 60 X 60
                                                                       = 2.16 X 10^7 C

We know that, 96500 C = 1 F
∴ 2.16 X 10^7 C =  <span>223.8 F
</span>
Now, number of moles of<span> MnO2  deposited = 223.8/2=111.9 
</span>
Finally, 1 mole of MnO2 ≡ 86.94 g
∴ 111.9 mole of MnO2 ≡  111.9 X 86.94 = 9728 g

Thus, <span>mass of MnO2 that will be deposited at anode = 9728 g</span>
7 0
3 years ago
Read 2 more answers
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