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romanna [79]
3 years ago
11

Which group in the periodic table is known as the as the noble gases?

Chemistry
1 answer:
tekilochka [14]3 years ago
6 0
ANSWER:

Group 18:
Elements are
-helium(He)
-neon (Ne)
-argon (Ar)
-krypton (Kr)
-xenon (Xe)
-radon (Rn)
-oganesson (Og)
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4 0
3 years ago
How much hbro must be added to 1l of pure water to make a solution with a ph of 4.25? ka = 2.00 × 10−9 ?
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Answer is: 153.52 grams of hypobromous acid <span>must be added.
</span>Chemical dissociation: HBrO ⇄ H⁺ + BrO⁻.
pH = 4.25.
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[H⁺] = [BrO⁻] = 5.62·10⁻⁵ M.
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4 years ago
Name the reaction which forms insoluable salts
Serga [27]

Answer:

precipitation reactions

Explanation:

insoluble salts can be formed/produced by precipitation reactions

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