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Lady_Fox [76]
2 years ago
6

Which two energy sources were used the most in

Chemistry
1 answer:
Naily [24]2 years ago
4 0

Answer:

The 1st and 2nd ones on the top

Explanation:

Hope this helps:)

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Periodic table the first row of elements fits in the period blank after the element blank the second row of elements fits in per
Bezzdna [24]

Answer:

The first row fits in period 2

The second row fits in period 3

Explanation:

Elements arranged vertically in the periodic table in groups that share similar chemical properties.

Elements are also organized horizontally in rows or periods

The length of each period is determined by the number of electrons that can occupy the sublevels being filled in that period.

7 0
2 years ago
Question 11 (5 points)
LenKa [72]

Answer:

False

Explanation:

On the left side of the equation (Li + O2), there is 1 Li atom and 2 O atoms.

but on thw right side of the equation (Li2O,) there is 2 Li atoms and 1 O atom

8 0
3 years ago
What event marks the beginning of Earth's current era?
uysha [10]
B. We are in the cenzoic era so what previously had happen to cause the life we live today was a huge mass extinction.... hope this helps!!
3 0
3 years ago
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Tracy observes an organism that lives in a lake by her house. The organism has an internal skeleton, scales, fins, and gills. Th
andrey2020 [161]
I'd say B. Its most likely a fish.
8 0
2 years ago
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In a chemical equation, the arrow
muminat

In a chemical equation, the arrow  


A. can be read as "yields" or "makes."  

B. always points toward the products.  

C. separates the products and reactants.  

D. all of these


all of these options are right.

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3 years ago
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