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Amiraneli [1.4K]
3 years ago
5

Any substance composed of two or more elements that are chemically combined in a fixed proportion is

Chemistry
1 answer:
eimsori [14]3 years ago
6 0
(4) a compound is the correct answer~
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I NEED HELP WITH #3 pleaseeee
Anit [1.1K]

Answer:

energy level

sub energy level

electrons in the orbital

Explanation:

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3 years ago
What is the composition of the nuclei modeled by these symbols? How many protons and neutrons?
gayaneshka [121]

There are six protons and eight neutrons present in the carbon atom as shown.

<h3>What is the nucleus?</h3>

The nucleus of an atom consists of its protons and its neutrons. The protons are positively charged while the neutrons have no charge.

From the symbol of the element as shown in the question, we can see that there are six protons and eight neutrons present.

Learn more about nucleus of atoms:brainly.com/question/10658589

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6 0
2 years ago
Określ typ tlenku (zasadowy,kwasowy,obojętny,amfoter)<br><br> CuO, FeO,Cr2O3,P4O10,MnO2,CaO,CrO3,SO3
AVprozaik [17]

Answer:

hrhrhr

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3 years ago
Why are lightning formed in clouds?
VladimirAG [237]

Explanation:

Because opposites attract, the negative charge at the bottom of the storm cloud wants to link up with the ground’s positive charge. Once the negative charge at the bottom of the cloud gets large enough, a flow of negative charge called a stepped leader rushes toward the Earth. The positive charges at the ground are attracted to the stepped leader, so positive charge flows upward from the ground. When the stepped leader and the positive charge meet, a strong electric current carries positive charge up into the cloud. This electric current is known as the return stroke. We see it as the bright flash of a lightning bolt.

Thunder and lightning occur at roughly the same time although you see the flash of lightning before you hear the thunder. This is because light travels much faster than sound

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