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densk [106]
3 years ago
13

Who is the Administrator of Brainly??​Hopefully, someone will answer (◍•ᴗ•◍)❤

Chemistry
2 answers:
dexar [7]3 years ago
6 0

Answer:

I believe it

Explanation:

Kavisharma Haeze is the administrator of Brainly

sleet_krkn [62]3 years ago
3 0

Answer:

Hey mate....

Explanation:

This is ur answer....

.

Kavisharma/ Haezel is the admin of brainly......

hope it helps,

mark me as the brainliest.....

Follow me......xd

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If copper carbonate system is heated for too short a time, what will you notice for mass percent of copper be too large or too s
sammy [17]

Answer:

The mass percent of copper as element is the same.

Explanation:

First of all we need the reaction that is presented below:

CuCO_{3 (s)} +Heat → CuO_{(s)} + CO_{2 (g)}

The mass percent of copper (Cu) as element is the same because of during the reaction the element only transform its nature from copper carbonate (CuCO_{3 (s)}) to copper oxide (CuO_{(s)}), the latter is a solid and will remain in the system.

On the other hand, you will note that the global percentage mass will be small because of the reaction produce (CO_{2 (g)}) that is a gas and this one will escape for the system.  

Have a great day!

3 0
3 years ago
What are the mole ratios of hydrazine
juin [17]

mole ratios of hydrazine should be 1:2. I could be wrong. Are there any options to choose from?

5 0
3 years ago
The diagram below shows a cell placed in a solution. What will happen to the cell?
drek231 [11]

the cell will expand as water moves into it.

7 0
3 years ago
Add electron dots and charges as necessary to show the reaction of calcium and oxygen to form an ionic compound.
xxMikexx [17]
The two atoms shown in the equation are CALCIUM and oxygen. 

<span>You start off with a neutral calcium atom with a shell of two electrons, a shell of 8 around that, a shell of 8 around that, and a shell containing 2...with no charge. </span>
<span>20 protons + 20 electrons. </span>

<span>You also have an oxygen atom with a shell of 2, and a shell of 6...with no charge. </span>
<span>8 protons + 8 electrons. </span>

<span>Each ionizes to form a calcium ion with 2 electrons removed (from the outer shell), leaving a +2 charge (20 protons, 18 electrons)... </span>
<span>and an oxygen ion with 2 electrons added (to the outer shell), leaving a -2 charge (8 protons, 10 electrons). </span>

<span>Their electrostatic attraction causes them to come together to form an ionic compound of CaO in a crystal lattice.</span>
7 0
3 years ago
How do isotopes of an atom differ? how are they the same?
otez555 [7]

Answer: Isotopes of an atom are different because they have different atomic masses and different number of neutrons within their nucleus. They are the same since they will always have the same atomic number/number of protons in their nucleus.

Explanation:

5 0
3 years ago
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