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GalinKa [24]
3 years ago
8

Which list of formulas represents compounds, only?

Chemistry
2 answers:
goldfiish [28.3K]3 years ago
8 0
A compound has to have at least two different elements in
(1) is the only list in which each of the three symbols representations show at least two different elements
Ann [662]3 years ago
3 0
The best formula that represents compounds only is <span>CO2, H2O, NH3.</span>
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Which event occurs during high tide?
Leokris [45]

The answer to this question would be the second option or B (The moon's orbit is closer to Earth.) because there are multiple different high tides that are caused by either the moon being unusually close to the Earth or the moon is at it's Quarterly or New Moon phases.


Hope that this helped you! :D

8 0
3 years ago
Read 2 more answers
Iron 3 oxide and carbon react to form iron and carbon dioxide. Balance the equation.
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Answer:

2 Fe(iii)2O3 + 3 C ==> 2 Fe  + 3 CO2

Explanation:

First of all, you have to translate the words into an equation.

Fe(iii)2O3 + C ==> Fe  + CO2

The easiest way to tackle this is to start with the Oxygens and balance them. They must balance by going to the greatest common factor which is 6. So you multiply the molecule by whatever it takes to get the Oxygens to 6

2 Fe(iii)2O3 + C   ==>     Fe  + 3 CO2

Now work on the irons. There 2 on the left and just 1 on the right. So you need to multiply the iron by 2.

2 Fe(iii)2O3 + C ==> 2 Fe  + 3 CO2

Finally it is the turn of the carbons. There are 3 on the right, so you must make the carbon on the left = 3

2 Fe(iii)2O3 + 3 C ==> 2 Fe  + 3 CO2

And you are done.

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3 years ago
A nitrogen atom has five valence electrons. The Lewis structure shows how a nitrogen atom bonds with three hydrogen atoms to for
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