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Alex787 [66]
3 years ago
8

The solar nebula was a _____.

Chemistry
1 answer:
Zarrin [17]3 years ago
4 0

3. Rotating cloud made mostly of helium and hydrogen.


Tell me if im wrong, but im sure its correct.

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1. Which of the following should have the highest boiling point?
amm1812

Answer:

1. CBr4

2. C5H12

3. CF4

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Explanation:

1. The boiling point of a molecule depends on its structure. Because the boiling point of molecules of similar size, depends on the differences in functional groups of the molecule.

For example CBr4 have a higher boiling point than other compounds because they have both London dispersion forces and dipole-dipole interactions.

2. Non-polar molecules like C5H12 will have low melting and boiling points, because they are held together by the weak van der Waals forces.

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3 years ago
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Answer:

Fe2O3 + 2Al \rightarrow 2Fe + Al2O3

Explanation:

Hello!

In this case, when balancing chemical reactions, we must make sure that the atoms of each element are the same at both reactants and products; thus, for the given reaction, we need two iron and aluminum atoms at each side based on their subscripts in the given oxides as shown below:

Fe2O3 + 2Al \rightarrow 2Fe + Al2O3

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