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jekas [21]
3 years ago
7

The name of Earth's single, huge continent from over 250 million years ago is (1 point)

Chemistry
2 answers:
babunello [35]3 years ago
5 0
The answer is pangea.
pochemuha3 years ago
3 0
B. Pangaea or Pangaea Ulitma
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Why does fluorine have the highest electronegativity
ICE Princess25 [194]

Answer:

Because it only needs one more electron to get to a full valence shell (8), so it really wants it and is pulling other electrons in. It also has to do with needing one more electron to fill the 2p shell. It is a small element which means its electrons are pulled tightly to the nucleus.

Hope this helps!

Explanation:

5 0
2 years ago
1. Write the balanced chemical equation for the synthesis of magnesium phosphide from its elements, including the word “energy”
Evgen [1.6K]

Answer:

3Mg(s) +2P(s) -------> Mg3P2(s) + energy

Keq= [Mg3P2]/[Mg]^3 [P]^2

Explanation:

The equation for the formation of magnesium phosphide from its elements is;

3Mg(s) +2P(s) -------> Mg3P2(s) + energy

Hence we can see that three moles of magnesium atoms combines with two moles of phosphorus atoms to yield one mole of magnesium phosphide. The equation written above is the balanced chemical reaction equation for the formation of the magnesium phosphide.

The equilibrium expression for the reaction K(eq) will be given by;

Keq= [Mg3P2]/[Mg]^3 [P]^2

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3 years ago
What is the most likely metal ion present in the fireworks shown in the image?
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A because of the way it looks and how it works
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Ice cubes in water and explain why it is either a homogeneous or heterogeneous mixture.
alexandr402 [8]
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What is a serial dilution?
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A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion.

4 0
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