Answer:
covelant bonddddd hope it helps
Answer:
Liming reagent in the given reaction is oxygen.
Explanation:
Mass of octane = 12.85 g
Mass of oxygen = 7.46 g
Molar mass of octane = 114.23 g/mol
Molar mass of oxygen = 32
According to the reaction, 2 moles of octane requires 25 moles of O2
so, 0.1125 moles of octane requires 
of oxygen.
but only 0.2331 mol of oxygen is present.
Hence, oxygen is the limiting reagent
The correct answer is acids and bases
the arrheius theory, introduced in 1887 by the Swedish scientist Svante Arrhenius<span>, that </span>acids<span> are substances that dissociate in water to yield electrically charged atoms or molecules, called </span>ions<span>, one of which is a </span>hydrogen ion<span> (H</span>+<span>), and that </span>basesionize in water to yield hydroxide ions (OH−). It is now known that the hydrogen ion cannot exist alone in water solution; rather, it exists in a combined state with a water molecule, as the hydronium ion (H3O+<span>). In practice the hydronium ion is still customarily referred to as the hydrogen ion.</span>
I believe the answer is carbon dioxide. Because when carbon dioxide and water combine in the atmosphere it forms a very weak acid called carbonic acid, which falls to the Earth's surface as precipitation.
