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tresset_1 [31]
3 years ago
6

A changing magnetic field produces an electric field with open loop field lines.

Chemistry
1 answer:
Dimas [21]3 years ago
8 0

Answer:

True

Explanation:

A changing magnetic field induces a current in a conductor. For example, if we move a bar magnet near a conductor loop, a current gets induced in it.

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44

Explanation:

protons and electrons have the same number:)

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Given pH = 8.55 Find: [H3O+] and [OH-] Is this acidic, basic or neutral?
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Explanation:

The given pH = 8.55

Unknown:

[H₃O⁺] = ?

[OH⁻] = ?

In order to find these unknowns we must first establish some relationship.

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                   8.55 = -log[H₃O⁺]

                    [H₃O⁺] = inverse log₁₀(-8.55) = 2.82 x 10⁻⁹moldm⁻³

To find the [OH⁻],

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                               pOH = 14 - pH = 14 - 8.55

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              pOH = -log[OH⁻]

               [OH⁻] = inverse log₁₀ (-5.45) = 3.55 x 10⁻⁶moldm⁻³

The solution is basic because it has more concentration of OH⁻ ions compared to H⁺ ions.

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Looking at the Periodic Table, how can you determine if an element is a metal, metalloid or nonmetal?
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