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Lena [83]
3 years ago
6

Pls help me I don’t understand it’s for my science class.

Chemistry
1 answer:
Liono4ka [1.6K]3 years ago
5 0

Answer:

Everything is correct except for Gold and Nickel, they are both Elements

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Làm thế nào để tắt mỗi chất ra khỏi hỗn hợp gồm bột nhôm bột sắt và bột gỗ?
guajiro [1.7K]

Answer:

Dùng nam chân hút đc bột sắt ra khỏi hỗn hợp

Bột gỗ và bột nhôm thì bột gỗ tan trong nước còn bột nhôm thì không

Explanation:

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7 0
3 years ago
1 . a chemical bond formed by the electrostatic attraction between ions covalent bond
liberstina [14]

Explanation:

When there occurs sharing of electrons between two chemically combining atoms then it forms a covalent bond. Generally, a covalent bond is formed between two non-metals.

An ionic bond is defined as the bond formed due to transfer of one or more number of electrons from one atom to another. An ionic bond is always formed between a metal and a non-metal.

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A molecule is defined as the smallest particle present in a substance or atom.

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Thus, we can conclude that given statements are correctly matched as follows.

1).  a chemical bond formed by the electrostatic attraction between ions - ionic bond

2).  a chemical bond formed by two electrons that are shared between two atoms - covalent bond

3). the orbitals of an atom where electrons are found - energy level

4).  the smallest particle of a covalently bonded substance - molecule

5).  a bond characteristic of metals in which mobile valence electrons are shared among positive nuclei in the metallic crystal - metallic bond

7 0
3 years ago
Liquid particles move faster than gas particles.<br><br> a. True<br><br> b. False
Fudgin [204]

Answer:

False

Explanation:

Liquid particles move fast but they move slower than gas particles. Gas particles move faster than liquid particles because it has more kinetic energy than liquid particles.

3 0
3 years ago
Read 2 more answers
N2 + 3H2 → 2NH3
lana66690 [7]

 The number of  moles  of H₂ that are needed  to react with 2.0  moles of N₂  is    6.0 moles


 <u><em>calculation</em></u>

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The moles of  H₂  is  calculated  using the mole ratio

That is from equation above  N₂:H₂  is 1 :3

therefore the moles of  H₂ = 2.0  moles  x (3/1) = 6.0 moles

4 0
4 years ago
Does silver change color in the presence of poison.
Dimas [21]
No I don’t think so because it a color
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