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lorasvet [3.4K]
2 years ago
5

which mineral group is composed of compounds that contain atoms of sulfur and one or more metals.......HELP MEEEE!!!!​

Chemistry
2 answers:
Vlada [557]2 years ago
3 0

Answer:suflides.

Explanation:

Sulfides are minerals composed of compounds that contain atoms of sulfur and one or more metals.

mixas84 [53]2 years ago
3 0

Answer:

Metallic sulfides

Explanation:

These are group of metallic compounds that have sulfur in them. The usually have molecular formula of M₃S₂, Cu₂S, FeS₂.

Metallic sulfides are very important since they serve as reservoirs for sulfur atom and can be easily extracted from the ores. This is possible because they're usually cheap and abundant in nature. Eg Ni₃S₂, FeS₂, Cu₂S etc.

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Answer:

5.56 × 10⁻⁸

Explanation:

Step 1: Given data

  • Concentration of the weak acid (Ca): 0.187 M
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Step 2: Calculate the concentration of H⁺

We will use the following expression.

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog -3.99 = 1.02 × 10⁻⁴ M

Step 3: Calculate the acid dissociation constant (Ka)

We will use the following expression.

Ka = \frac{[H^{+}]^{2} }{Ca} = \frac{(1.02 \times 10^{-4})^{2} }{0.187} = 5.56 \times 10^{-8}

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