Answer:
e. oxygen is a reactant in combustion and pure oxygen increases the reactant concentration
Explanation:
The reaction of a burning match is combustion. In this combustion, the organic components of the match (such as cellulose, C₆H₁₀O₅) react with oxygen, producing water and carbon dioxide:
- C₆H₁₀O₅(s) + 6O₂(g) → 5H₂O(g) + 6CO₂(g)
Seeing as oxygen is a reactant and not a catalyst nor product, and that nitrogen plays no part in the reaction, <em>the only correct answer is option e</em>.
Explanation:
A source Emits a sound and is represented by the red dot in this map. Four people are located and the source and the circle represent the sound wave.
As the source moves west which person hears the highest pitch
person B
<span>An object at rest will stay at rest unless acted upon by a unbalanced force.
</span>
Pluto
Because it has not cleared the neighborhood around its orbit, Pluto is considered a dwarf planet. It orbits in a disc-like zone beyond the orbit of Neptune called the Kuiper belt, a distant region populated with frozen bodies left over from the solar system's formation.
Answer:
The molecular equation shows each of the substances in the reaction as compounds with physical states written next to the chemical formulas. The
complete ionic equation shows each of the aqueous compounds as separate ions. Insoluble substances are not separated and these have the symbol (s) written
next to them. Water is also not separated and it has a (l) written next to it. Notice that there are ions that are present on both sides of the reaction arrow –>
that is, they do not react. These ions are known as spectator ions and they are eliminated from complete ionic equation by crossing them out. The remaining
equation is known as the net ionic equation. For example: The reaction of potassium chloride and lead II nitrate
Molecular Equation: 2KCl (aq) + Pb(NO3)2 (aq) -> 2KNO3 (aq) + PbCl2 (s)
Complete Ionic Equation: 2K+ (aq) + 2Cl-
(aq) + Pb2+ (aq) + 2NO3–
(aq) -> 2K+
(aq) + 2NO3
–
(aq) + PbCl2 (s)
Net Ionic Equation: 2Cl-
(aq) + Pb2+ (aq) -> PbCl2 (s)
Explanation:
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