All of them are properties of compounds except III.
for I, compounds are chemically combined together, so to separate them, we must use chemical methods like electrolysis or applying heat. These requires large amount of energy.
For II, they're always fixed. For example, in water (H2O), the ratio of hydrogen and oxygen is always 1:8 in mass. If there's some extra added, the substance becomes mixture instead of compounds.
For IV, after you chemically combined elements or compounds together, their properties are completely different. For example, iron can be attracted to magnets, but iron II sulphide does not.
Of course they are small
Explanation:
The only way you can see them is by a microscope or a lens and can be anywhere.
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>
N₂ +3H₂→ 2NH₃
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
Answer:
The chemical reaction that occurs when gasoline and air are ignited is called a Combustion Reaction.
Answer:
Hexane, C6H14, and water.
Explanation:
The highly polar group molecules are completely soluble in water because of the polar nature of water. Only the polar compounds or molecules can dissolve in water because poles of polar molecules attract by the poles which are present on water molecules.
Hexane is known as a pure hydrocarbon and non-polar in nature so, it does not have the ability to fulfill requirements of hydrogen bonds that why Hexane is immiscible in water.
