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kobusy [5.1K]
4 years ago
14

‼️‼️‼️‼️‼️‼️‼️PLZzz HELP I WOLL MARK YOU BRAINIEST ‼️‼️‼️‼️‼️‼️❌

Chemistry
1 answer:
Mila [183]4 years ago
4 0

Answer:

Hope this helps:

Explanation:

I think that it might be C. I'm not an expert so please don't blame me, I'm sorry if i'm wrong!

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Natalie observes these characteristics in the model of an atom. (i) includes positive charge (ii) contains electrons (iii) expla
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Electron cloud model

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4 years ago
1. Element X has two naturally occurring isotopes. Its first isotope has a mass of 28.0 amu
riadik2000 [5.3K]
28.0 x 0.6424 = 18
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5 0
3 years ago
What does this even mean? Help please and thank you!
bezimeni [28]

Answer:

T₁ = P₁V₁T₂ / P₂V₂

Explanation:

The combine gas equation is given by:

P₁V₁ / T₁ = P₂V₂ / T₂

Where:

P₁ => is the initial pressure

V₁ => is the initial volume

T₁ => is the initial temperature

P₂ => is the final pressure

V₂ => is the final volume

T₂ => is the final temperature

Finally, we shall make T₁ the subject of the above expression. This can be obtained as follow:

P₁V₁ / T₁ = P₂V₂ / T₂

Cross multiply

T₁P₂V₂ = P₁V₁T₂

Divide both side by P₂V₂

T₁ = P₁V₁T₂ / P₂V₂

Thus, the formula for T₁ is:

T₁ = P₁V₁T₂ / P₂V₂

4 0
3 years ago
- Explain how ionic bonds, covalent bonds, and metallic bonds each form and how.
-Dominant- [34]

Answer:  -Ionic bonds form when one atom provides electrons to another atom. Covalent Bonds: Covalent bonds form when two atom shares their valence electrons. Metallic Bonds: Metallic bonds form when a variable number of atoms share a variable number of electrons in a metal lattice.

-Covalent Bonds.

Covalent Compounds. Contain no metals and no ions. Covalent compounds contain nonmetals only.

Example:

Ionic Compounds. A metal with a non-metal. Doesn't use prefixes for naming. Name the metal and change the nonmetal ending to -ide.

Explanation: Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

6 0
2 years ago
Why is helium so difficult to liquefy?
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Helium is very difficult to liquify because it only exists in its liquid form at an extremely low temperature. This temperature is <span>low temperature of −269 °C (about 4 K or −452.2 °F). It is only possible to maintain liquid helium in a highly artificial environment where this low temperature can be created. </span>
3 0
4 years ago
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