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Ratling [72]
3 years ago
12

What characteristic of an element’s atoms always determines the element’s identity?

Chemistry
1 answer:
dmitriy555 [2]3 years ago
6 0

Answer:

Number of protons

Explanation:

There are three sub atomic particles. These are;

- Protons

- Electrons

- Neutrons

Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.

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A gaseous mixture contains 434.0 Torr H 2 ( g ) , 434.0 Torr H2(g), 389.9 Torr N 2 ( g ) , 389.9 Torr N2(g), and 77.9 Torr Ar (
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Answer:

H₂: 0.48,  N₂: 0.43;  Ar: 0.09

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First of all, sum all the pressures to know the total pressure in the mixture.

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The density of lava is 3.1 g/cm². It has a volume of 2700 cm3. How much does this block of lava weigh?
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Mass of lava is 8370 g.

Explanation:

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Units:

SI unit of density is Kg/m3.

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D=m/v

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Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

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density of lava = 3.1 g/cm³

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