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dezoksy [38]
3 years ago
15

Help me for brainlest pleaes

Chemistry
1 answer:
Tresset [83]3 years ago
6 0
First option.

The male tails are more attractive because of their long feathers , meanwhile the female tails are shorter than expected!
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Are we talking like on a periodic table, color, texture?
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Write the equilibrium constant expressions for the following equilibria.
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Answer:

4. K = [CF₂Cl₂] [HCl]² / [HF]² [CCl₄]

5. K = [NH₃] [HCl]

6. K = 1 / [SO₃]

Explanation:

Equilibrium constant expressions are defined as the ratio between concentrations of products and concentrations of reactants powered to its reaction quotient (Compounds in solid or liquid phase are not taken in the expression).

For the reactions:

4. CCl₄(g) + 2HF(g) ⇌ CF₂Cl₂(g) + 2HCl(g)

Equilibrium expression, K, is:

<em>K = [CF₂Cl₂] [HCl]² / [HF]² [CCl₄]</em>

5. NH₄Cl(s) ⇌ NH₃(g) + HCl(g)

<em>K = [NH₃] [HCl]</em>

6. SO₃(g) + H₂O(l) ⇌ H₂SO₄(l)

<em>K = 1 / [SO₃]</em>

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3 years ago
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In 1–2 sentences, explain why weather can be predicted only as probable, not definite.
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Answer:

Meteorologists use computer models to predict the weather. And computational power has come an extended way. Yet meteorologists still have trouble correctly predicting the weather over some days. Sometimes they don’t even comprehend right over 24 hours! Why does this happen? Their ability to predict the weather is restricted by the number of available data, the time available to research it, and therefore the complexity of weather events.

Explanation:

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