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sveta [45]
3 years ago
7

What is the empirical formula

Chemistry
1 answer:
lord [1]3 years ago
5 0

A formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

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Distillation is a _____________ separation technique.
Annette [7]

Answer:

physical

Explanation:

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3 years ago
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Nitrogen (N) is much more electronegative than hydrogen (H). Which of the following statements is correct about the atoms in amm
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Answer: Option E. There are covalent bonds between the hydrogen atoms

Explanation:

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3 years ago
What will be the end product for each electrode after electrolysis if the solution is concentrated aqueous sodium chloride ?​
Eddi Din [679]

Answer:

Cathode: Hydrogen gas

Anode: Chlorine gas

Explanation:

① Write down the ions present in the electrolyte

Cations: Na⁺, H⁺

Anions: Cl⁻ , OH⁻

② Decide which ions are preferentially discharged.

These are the factors:

For the discharge of cations,

- Reactivity series

(The lower the position of the cation in the reactivity series, the easier it is to be discharged)

For the discharge of anions,

- Concentration effect (look at this first)

(The more concentrated the ion, the easier for it to be discharged)

- If solution is not concentrated (dilute), look at the position of the anion on the electrochemical series.

(The lower the position of the anion on the electrochemical series, the easier of it to be discharged)

In this case:

For cations, H⁺ ions are selectively discharged at the cathode as its position is lower than Na⁺ in the reactivity series.

Anion: Cl⁻ ions, being more concentrated, are selectively discharged at the anode.

☆For electrolysis,

Cation at the cathode (-ve terminal)

Anion at the anode (+ve terminal)

In summary, here's what happened at each electrode:

<u>C</u><u>athode</u>

- H⁺ selectively discharged

- ionic half equation: 2H⁺ (aq) +2e⁻ → H₂ (g)

<u>Anode</u>

- Cl⁻ ions selectively discharged

- ionic half equation: 2Cl⁻ (aq) → Cl₂ (g) + 2e⁻

3 0
3 years ago
When the cell splits, they have a nucleus with complete genetic material for the new daughter cells. What is this genetic materi
vaieri [72.5K]
Chromosomes is the correct answer darlin
8 0
3 years ago
Wegener proposed the theory of continental drift based on all of the following except?
maxonik [38]

Answer:

A.

Explanation:

The continents on Earth have a fixed position.

Sorry if I'm wrong but I hope this helped

4 0
3 years ago
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