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Vladimir [108]
3 years ago
11

Which group of the periodic table had the elements with the lowest first ionization energies

Chemistry
1 answer:
Gennadij [26K]3 years ago
3 0
The 3 or i think 2nd row not sure
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Determine the pH of a 0.048 M hypochlorous acid (HClO) solution. Hypochlorous acid is a weak acid (Ka = 4.0 ✕ 10−8 M).
storchak [24]

pH of 0.048 M HClO is 4.35.

<u>Explanation:</u>

HClO is a weak acid and it is dissociated as,

HClO ⇄ H⁺ + ClO⁻

We can write the equilibrium expression as,

Ka = $\frac{[H^{+}] [ClO^{-}]  }{[HClO]}

Ka = 4.0 × 10⁻⁸ M

4.0 × 10⁻⁸ M = $\frac{x \times x }{0.048}

Now we can find x by rewriting the equation as,

x² =  4.0 × 10⁻⁸ × 0.048

   = 1.92 × 10⁻⁹

Taking sqrt on both sides, we will get,

x = [H⁺] = 4.38 × 10⁻⁵

pH = -log₁₀[H⁺]

     = - log₁₀[ 4.38 × 10⁻⁵]

   = 4.35

8 0
2 years ago
Storing sugar as long chains for later use is an example of a(n) ____________ chemical reaction.
DerKrebs [107]

Answer:

Endothermic

Explanation:

Storing sugar for later use is an example of an endothermic reaction because that energy is being absorbed.

8 0
3 years ago
Is this right ? if it’s wrong correct me
Dimas [21]
You can go to a website about that it will give you the answers
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3 years ago
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Fe2(SO4)3 +__BaCl2 → __BaSO4 +_<br> FeCl3
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Fe2(SO4)3 + 3BaCl2 → 2FeCl3 + 3BaSO4

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Can sulphur pentrate glass
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