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Umnica [9.8K]
3 years ago
8

Plz help me... my ppr is gonig on......

Chemistry
2 answers:
Brut [27]3 years ago
5 0
Wait what is the questions
anyanavicka [17]3 years ago
3 0

Answer:

geruow0irghvn3p0unhie0ghik

Explanation:

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a student balanced the chemical equation for the reaction of magnesium with oxygen by writing Mg + O2 ----> MgO2. What is wro
egoroff_w [7]

Answer:

Explanation:

Magnesium when it oxidizes has a valence of 2.

Oxygen, when it mixes with something, has a valence of - 2

So Mg and O2 will form something, but what? The answer is MgO

Mg + O2 ===> MgO

To balance this equation, you need 2 Magnesiums on the right and 2 Oxygens also on the right. The left will need a  two Magnesiums.

The balanced equation will be

2Mg + O2 ====> 2MgO

6 0
4 years ago
What element has the lowest density of all elements
lesantik [10]

Hydrogen has the lowest density.

4 0
3 years ago
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CORRECT ANSWER GETS BRAINEST!!! <br><br> Which element is in Group 6, Period 4? (Look at image)
vaieri [72.5K]

Answer:

Se

Explanation:

Se is in geoup 6, period 4

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3 years ago
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Indicators change color in acids or bases. What are the colors of the pH balance
lozanna [386]

Answer:

}

the color of the pH balance is dark blue

Explanation:

A pH indicator corresponds to a substance that measures the pH of the solution in question. in the case of neutral substance the color that the solution takes is dark blue, if it is acidic it turns pink or red and basic of a green tone. Some examples of indicators: phenolphthalein, bromophenol blue, methyl red, among others.

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How many valence electron are contained in one atom of the element nitrogen
Tomtit [17]
Nitrogen has 5 valence electrons.
4 0
3 years ago
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