Sound wave a has lower frequency than sounds wave b but both waves have the same amplitude . What must also be true of these two
2 answers:
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Aluminum can be oxidized by and
Some of the metal corrodes (or oxidizes) and forms the corresponding metal oxide on the surface as a result of a chemical reaction between the metal surface and the oxygen in the air. The corrosion products that occur in some metals, like steel, are highly apparent and loose.
According to reactivity series (The array of metals in the descending order of their reactivities is referred to as the metals' reactivity series. It is sometimes referred to as the metals in the activity series.)
Lithium and calcium ions are more reactive than aluminum ion and they are less electronegative.
Since silver and tin are more electronegative than aluminum so, they cannot oxidize aluminum.
∴ and
ions can oxidize aluminum.
Learn more about electronegativity here brainly.com/question/16446391
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Answer: 480 kJ of energy is released when 3.5 mol of reacts.
Explanation:
The balanced chemical reaction is:
Thus it is given that the reaction is exothermic (heat energy is released) as enthalpy change for the reaction is negative.
1 mole of on reacting gives = 137 kJ of energy
Thus 3.5 moles of on reacting gives =
of energy
Thus 480 kJ of energy is released when 3.5 mol of reacts.