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7 days ago

Given the formula: what is a chemical name of this compound? propane propanal propanol propanone

1 answer:

7 0

1) The chemical formula for propane is CH₃-CH₂-CH₃.
Propane is classified as a three-carbon alkane (acyclic saturated hydrocarbon).
2) The chemical formula for propanal is CH₃-CH₂-CH=O.
Propanal is a saturated three-carbon aldehyde (consists of a carbonyl center).
3) The chemical formula for propanol is CH₃-CH₂-CH₂-OH.
1-propanol is a primary alcohol.
4) The chemical formula for propanone is (CH₃)₂-C=O.
Propanone, also known as acetone, is the simplest and smallest ketone.

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Which of the options below show typical bonding patterns for a neutral nitrogen atom in a molecule or polyatomic ion?

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More information is needed, but in general, a polyatomic ion consists of multiple atoms bonded together, often with instability that affects their bonding patterns.

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1 month ago

Given two half reactions as follows: A2+ → 2 A2+ + 3 e− 4 e− + B → B4− What would you multiply each half-reaction by, to cancel

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To achieve the cancellation of electrons, the oxidation half-reaction needs to be multiplied by 4 while the reduction half-reaction must be multiplied by 3. Explanation: The oxidation reaction accounts for the loss of electrons, increasing the oxidation state, while the reduction implies gaining electrons, leading to a decrease in oxidation state. The respective half-reactions illustrate this, confirming that multiplying the oxidation by 4 and the reduction by 3 achieves the desired effect.

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17 days ago

Enter the net ionic equation representing solid chromium (iii) hydroxide reacting with nitrous acid. express your answer as a ba

Anarel [2728]

The net ionic equation for the reaction between chromium (III) hydroxide and nitrous acid is:

Cr(OH)₃ (s) + 3H⁺ (aq) ⇒ Cr³⁺ (aq) + 3H₂O (l)

Additional Details

An electrolyte dissociates into ions in solution.

Chemical equations can also be represented with ionic species.

Strong electrolytes (fully ionized) are written as separate ions, whereas weak electrolytes (partially ionized) remain as intact molecules.

In ionic equations, spectator ions are those unchanged by the chemical process—they are present both before and after the reaction.

Removing these spectators results in the net ionic equation.

Gases, solids, and water (H₂O) are written as molecules, without ionization.

Therefore, only dissolved compounds are represented by their ions (aq).

The problem involves chromium (III) hydroxide reacting with nitrous acid.

The reaction occurring is:

Cr(OH)₃ (s) + 3HNO₂ (aq) ⇒ Cr(NO₂)₃ (aq) + 3H₂O (l)

Chromium (III) hydroxide is a solid and remains un-ionized, as does water.

Thus, the ionic equation is:

Cr(OH)₃ (s) + 3H⁺ (aq) + 3NO₂⁻ (aq) ⇒ Cr³⁺ (aq) + 3NO₂⁻ (aq) + 3H₂O (l)

The ion 3NO₂⁻ is a spectator ion; removing it yields the net ionic equation:

Cr(OH)₃ (s) + 3H⁺ (aq) ⇒ Cr³⁺ (aq) + 3H₂O (l)

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1 month ago

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Answer:

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28 days ago

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A student has samples of two pure compounds, XClO3 and ZClO3, which contain unknown alkali metals X and Z. The student measures

eduard [2645]

Answer:

A. Which element, X or Z, has a higher molar mass?

Explanation:

Heating the original compounds intensely to remove all oxygen causes chemical decomposition reactions:

2XClO₃ (solid) → 2XCl + 3O₂ (gas)

2ZClO₃ (solid) → 2ZCl + 3O₂ (gas)

By measuring the initial mass of each sample and the mass remaining after heating, the student can compute the oxygen gas mass released:

Mass of oxygen released = initial sample mass minus residue mass

Using this oxygen mass, she can calculate how many moles of oxygen were present in each sample:

Moles of oxygen = oxygen mass (g) divided by molar mass of oxygen

Next, the moles of the original sample are determined:

Each mole of XClO₃ or ZClO₃ has 3 moles of oxygen atoms.

So, dividing the moles of oxygen released by 3 gives the moles of the sample.

Applying the formula molar mass = mass / moles, the student finds the molar masses of XClO₃ and ZClO₃.

Thus, this data allows answering question A: Which of X or Z has the higher molar mass?

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1 month ago