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Marat540 [252]
2 years ago
9

Which one of the following represents a chemical change?

Chemistry
1 answer:
11111nata11111 [884]2 years ago
5 0
We need options... sorry
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There are 1.204 x 10^24 atoms of oxygen. How many moles is this?
Nastasia [14]

Answer:

7.25 x 10^47

Explanation:

1.204 x 10^24 moles*6.022 x 10^23 avogadro's number= 7.25 x 10^

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3 years ago
Write 4.13X10^3 in decimal notation.
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4.13X10^3= 4130 in the expanded form

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3 years ago
I NEED THESE ANSWERS ASAP
Snezhnost [94]
First one - Mg(OH)2+2HCl— MgCl2+ 2H2O
second one - CH4+2O2– 2H20
Third- is already balanced.
7 0
3 years ago
Explain the process of filtration and crystallization ​
Akimi4 [234]

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Filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles. Either the clarified fluid or the solid particles removed from the fluid may be the desired product.

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8 0
3 years ago
Chemistry help needed asap please!
mote1985 [20]
The second one is correct because all of its orbitals are filled properly. The first one's arrows are not always opposite (3d) and it did not fill one of the orbitals before continuing on (2p).

The element would be Germanium, with 32 electrons

Hope this helps!
3 0
3 years ago
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