Answer:Difference between Ceres and Pluto
Nestled in the asteroid belt between Mars and Jupiter, Ceres is a tiny loner, while Pluto — in the Kuiper Belt at the edge of the solar system — is nearly three times as big and hosts a handful of moons. A mixture of rock and water ice dominates Ceres' landscape, while methane and nitrogen ices cover Pluto
Explanation:
<em>n</em> = 3. The principal quantum number must be at least 3 to have a magnetic quantum number <em>ml</em> = -2
The rules are:
• <em>n</em> > 0
• <em>l </em>< <em>n</em>
• |<em>ml</em>| ≤ <em>l
</em>
Thus, if <em>ml</em> = -2, <em>l</em> ≥ 2.
If <em>l </em>≥ 2 and n ><em> l</em>, the allowed values of <em>n</em> are 3, 4, 5, etc.
The smallest allowed value of <em>n</em> is <em>n</em> = 3<em>.
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Answer:
The number of moles of potassium hydroxide, KOH required to make 4 moles of K₂SO₄ is 8 moles of KOH
Explanation:
2KOH + H₂SO₄ → K₂SO₄ + 2H₂O
From the above reaction, we have 2 moles of KOH combining with 1 mole of H₂SO₄ to produce 1 mole of K₂SO₄ and 2 moles of H₂O.
Therefore the number of moles of potassium hydroxide that will be needed to make 4 moles of K₂SO₄ is;
8KOH + 4H₂SO₄ → 4K₂SO₄ + 8H₂O
8 moles of KOH is required to make 4 moles of K₂SO₄.
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