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JulijaS [17]
3 years ago
5

Identify the missing coefficient in the balanced equation and classify the type of reaction. Al2(CO3)3 ⟶ Al2O3 + ___CO2

Chemistry
2 answers:
ludmilkaskok [199]3 years ago
5 0

I think the answer is 1; Decomposition.

PSYCHO15rus [73]3 years ago
3 0

Al2(CO3)3 -> Al2CO3 -> 3CO2

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Mixtures (idk about chemistry a lot)
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1. two or mor, chemically bonded
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3 0
3 years ago
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alina1380 [7]

Answer:

C

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8 0
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The natural tendence of an object to resist change in its state of motion is:
melisa1 [442]

Inertia. Inertia is the natural tendency of bodies to remain in their states of either rectilinear or resting motion.

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3 years ago
Hydrofluoric acid, hf, has a ka of 6.8 × 10−4. what are [h3o+], [f−], and [oh−] in 0.710 m hf?
STALIN [3.7K]

Answer:

[H₃O⁺] = [F⁻] = 2.2 x 10⁻² M. & [OH⁻] = 4.55 x 10⁻¹³.

Explanation:

  • For a weak acid like HF, the dissociation of HF will be:

<em>HF + H₂O ⇄ H₃O⁺ + F⁻.</em>

[H₃O⁺] = [F⁻].

<em>∵ [H₃O⁺] = √Ka.C,</em>

Ka = 6.8 x 10⁻⁴, C = 0.710 M.

∴ [H₃O⁺] = √Ka.C = √(6.8 x 10⁻⁴)(0.710) = 2.197 x 10⁻² M ≅ 2.2 x 10⁻² M.

<em>∴ [H₃O⁺] = [F⁻] = 2.2 x 10⁻² M.</em>

<em></em>

∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.

<em>∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺]</em> = 10⁻¹⁴/(2.2 x 10⁻²) = <em>4.55 x 10⁻¹³.</em>

6 0
3 years ago
Displaement of ammonia from its salt
Dvinal [7]
Ill say <span>calcium hydroxide but hope this helps :)</span>
5 0
3 years ago
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