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romanna [79]
3 years ago
14

Which of these is not a gas? A. hydrogen B. gravity C. Oxygen D. heluim

Chemistry
2 answers:
Alexus [3.1K]3 years ago
7 0

Answer:

B. Gravity

Explanation:

Gravity is a force, not a gas :)

valentina_108 [34]3 years ago
6 0

Answer:

B: Gravity

Explanation:

gravity pulls on the gad

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BOTH acids and bases
wlad13 [49]

Answer:

Hello There!

Explanation: Your Answer will be, D) conduct electricity in water.

Both acids and bases conducts electricity and water.

When acid dissolves in water, they are good electrolytes.

When bases dissolves in water they are good electrolytes.

Electrolytes are liquid or molten substances that are able to conduct electricity.

they conduct electricity by the use of their ions in solution.

Since acid and bases ionize in solution, they will conduct electricity.

An acid is a substance that produces excess hydroxonium ion in solution.

A base produces excess hydroxyl ions in solution. Hope This Helps!

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4 years ago
Which part of the mantle is still a solid but flows thick , heavy liquid? A.asthensosphere B.crust C.core D.lithosphere
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What are the exceptions to the periodic trends in ionization energy?
Verdich [7]

Answer:

The exceptions to the periodic trends in ionization energy are the first ionization energy of beryllium is higher than that of boron and the first ionization energy of nitrogen is also higher than that of oxygen.

Explanation:

Taking a close look at the figure of first ionization energies, it clearly shows that the first ionization energy of beryllium is higher than that of boron and the first ionization energy of nitrogen is also higher than that of oxygen.

This is as a result of Hund's rule and electron configuration. For example,  the first ionization potential electron of beryllium is obtained from a 2s orbital while that of boron comes from a 2p electron. However, for oxygen and nitrogen, their electrons are obtained from 2p orbitals. While spin is uniform for all 2p electrons of nitrogen, it is different for oxygen.

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