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ArbitrLikvidat [17]
2 years ago
13

What is the si unit that refers to the number of particles contained in a substance.

Chemistry
1 answer:
AveGali [126]2 years ago
6 0

Answer:

one mole contains exactly 6.022 14076 into 10 23 elementary this number is the fix numerical value of the evandi and the constant and a b where expects in the unit mol - 1 is called the abacation number that amount of substance of a system is measured of the number specific

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If mass =180kg and volume =90m3, what is the density
DaniilM [7]
To find the density you must divide the mass by the density.
180kg ÷ 90m³ = 2kg/m<span>³
The density is </span>2kg/m³
4 0
3 years ago
A molecular orbital that decreases the electron density between two nuclei is said to be ____.
nikklg [1K]

A molecular orbital that decreases the electron density between two nuclei is said to be <u>antibonding.</u>

The bonding orbital, which would be more stable and encourages the bonding of the two H atoms into H_{2}, is the orbital that is located in a less energetic state than just the electron shells of the separate atoms. The antibonding orbital, which has higher energy but is less stable, resists bonding when it is occupied.

An asterisk (sigma*) is placed next to the corresponding kind of molecular orbital to indicate an antibonding orbital. The antibonding orbital known as * would be connected to sigma orbitals, as well as antibonding pi orbitals are known as \pi* orbitals.

Therefore,  molecular orbital that decreases the electron density between two nuclei is said to be <u>antibonding.</u>

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Hence, the correct answer will be option (b)

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6 0
2 years ago
What is the main type of weathering in deserts? weathering by organic acids chemical weathering physical weathering
Solnce55 [7]

Answer:

chemical

Explanation:

Chemical weathering, which is the decomposition of a rock by the alteration of its chemical composition.

5 0
3 years ago
Which of the following is evidence of a chemical change?
krek1111 [17]
<span>the formation of a gas
</span>
5 0
3 years ago
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The general equation for an acid base reaction looks lik:
pickupchik [31]

Answer

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Explanation

Acids are substances that dissolve in water to produce hydrogen ions, H+.A base is a substance that dissolves in water to produce hydroxide ions, OH-.In a chemical reaction of an acid and a base, the products are a salt and water.For example when hydrocholoric acid is added to sodium hydroxide, a salt namely sodium chloride is formed with additional water.


6 0
4 years ago
Read 2 more answers
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