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erik [133]
3 years ago
10

How many elements have scientists discovered​

Chemistry
1 answer:
Luda [366]3 years ago
5 0

Answer:

118

Explanation:

The discovery of the 118 chemical element known to exist us of 2021

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The only way to convert between two substances is to use a _____ to _____ conversion.
kykrilka [37]

Mole to Mole.

Assuming you're referring to converting in general, there must always be a mole to mole conversion.

Gram to gram would be incorrect as you must have a molar conversion in order to do so.

Gram to mole would be incorrect because that would leave out molecular conversions which would require three steps rather than two.

Mole to molecule is incorrect as it leaves out grams, depending on the circumstances and equation provided.

Thus, through process of elimination, mole to mole is the correct answer.

Hope this helps!

4 0
3 years ago
¿Cómo a teoría del enlace de valencia se puede predecir la estructura del agua y del metano?
Paraphin [41]

Answer:

i dont know

Explanation:

i cant speak spanish lol

5 0
3 years ago
If an element is on the 4th row of the periodic table...how many energy levels/rings would you need to draw a Bohr 's model of t
lana [24]

Answer:

4 energy levels/rings

Explanation:

By the atomic model proposed by Niels Bohr, the electrons orbit around the nucleus in shells having different energy level each with the ability to contain a given maximum amount of electrons.

The closest shell to the nucleus named the K shell, can have a maximum of two electrons, the next shell known as the L shell can have 8 electrons while the next shell, M, can have a maximum of 18 electrons

The arrangement of the periodic table is based on the number and location of electrons such that elements in the 4th row (period 4 elements) have three completed energy levels/rings before, their valence ring making the total number of rings = 4 energy levels/rings.

6 0
3 years ago
Does the moon make its own light? Explain.
-Dominant- [34]

Answer:

No moon has no light.

Explanation:

It only reflects the light coming from the sun. Only star produces light and moon is a satellite that revolvs around the earth.

5 0
3 years ago
Read 2 more answers
Which of these is a physical property?
Crazy boy [7]

Answer:

malleable

Explanation:

able to be bended into shape

5 0
3 years ago
Read 2 more answers
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