Answer:
There are three possible chemical equations for the combustion of sulfur:
- 2S (s) + O₂ (g) → 2SO (g)
- 2S (s) + 3O₂ (g) → 2SO₃ (g)
Explanation:
<em>Combustion</em> is a reaction with oxygen. The products of the reaction are oxides, and energy is released in the form of heat and light.
<em>Sulfur</em> iis a nonmetal, so the oxide formed is a nonmetal oxide.
The most common oxidation numbers of sulfur are -2, + 2, + 4, and + 6.
The combination of sulfur with oxygen may be only with the positive oxidation numbers (+2, + 4, and +6).
Then you have three different equations for sulfur combustion:
<u>1) Oxidation number +2:</u>
Which when balanced is: 2S(g) + O₂(g) → 2SO(g)
<u>2) Oxitation number +4:</u>
That equation is already balanced.
<u>3) Oxidation number +6:</u>
Which when balanced is: 2S(s) + 3O₂(g) → 2SO₃(g)
Answer:
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Explanation:
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Answer:
(D). Both metallic and ionic compounds can conduct electricity when molten. However, only metallic compounds can conduct electricity in a solid state.
Explanation:
Metallic compound have the ability to conduct electricity. Since they are Metals they have loosely held electrons which can contribute to electricity conduction.
Ionic compound are brittle physically, ionic compound cannot conduct electricity while being in solid state as the ions are held strongly by electrostatic force of attraction, they can only conduct electricity while they are in molten or aqueous state. In molten state they are forming ions, and ions are free to move within the solution and therefore contribute to electricity conduction.
They both involve the release of heat
Answer:
Explanation:
Since the crystal structure is FCC , every unit cell will have 4 atoms . If a be the edge length
average density = 4 x average atomic no / volume of unit cell x N
N is avogadro no or 6.02 x 10²³
average atomic no
= 100 / (87/107.9 +13/106.4) = 107.72
average density = 100 / (87/10.49 + 13/12.02)
= 10.667
10.667 = (4 x 107.72 )/ (a³x 6.02 x 10²³)
a³ = 4 x 107.72 / (10.667 x 6.02 x 10²³)
= 6.71 x 10⁻²³
a = 4.063 x 10⁻⁸ m
