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2 years ago

Identify 3 elements and 3 compounds. How are they the same? How are they different?

Chemistry

2 answers:

wlad13 [49]2 years ago

6 0

Answer:

The answer to your question is below

Explanation:

Elements Compounds

1.- Cu (Copper) NaCl (sodium chloride)

2.- Ag (Silver) HNO₃ (nitric acid)

3.- Al (aluminum) KOH (potassium hydroxide)

They are similar because that are composed by elements, they are different because elements are composed by only 1 element and compounds are composed by 2 or more elements.

Elements are simple and compounds are more complex structures.

Rudik [331]2 years ago

5 0

Answer: elements are gases: hydrogen (H2), nitrogen (N2), oxygen(O2), fluorine (F2), chlorine (Cl2), helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn).

Explanation:identify three elements and three compounds. ... They are similar because they are both pure substances but they are different because compounds have two or more different types of atoms while elements have the same exact type of atoms.

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Which best describes the motion of pentane molecules in liquid phase?

Ganezh [65]

Hydrocarbons may vary from state to state depending on the length of the carbon chain. For methane to butane, they are usually in gas form. Starting from pentane, they are in the liquid form. For very long carbon chains, that occur as solids. Now, it depends if the pentane is in a nonpolar liquid or polar liquid. Since pentane is nonpolar, it is miscible in the liquid solvent. The movements would most likely be free flowing. But if he solvent is polar, the molecules would repel with one another. In the end, it will form two liquid phases, on for the pentane and one for the polar solvent.

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2 years ago

An increase in temperature will effect vapor pressure by:

-BARSIC- [3]

Answer: Increases.

Explanation: As the temperature of a liquid or solid increases its vapor pressure also increases. Conversely, vapor pressure decreases as the temperature decreases.

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2 years ago

Hydrazine (N2H4) and dinitrogen tetroxide (N2O4) form a self-igniting mixture that has been used as a rocket propellant. The rea

Alexxx [7]

Answer:

Explanation:

An oxidizing accepts an electron and becomes reduced while a reducing agent loses an electron and become oxidized.

Chemical equation:

1) 2 N₂H₄ + N₂O₄ → 3 N₂ + 4 H₂O

2) Hydrazine ( N₂H₄) is being oxidized

Dinitrogen tetroxide N₂O₄ is being reduced

3) The reducing agent is Hydrazine ( N₂H₄) and the oxidizing agent is dinitrogen tetroxide (N₂O₄)

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2 years ago

mixture or pure substance: 1.blood 2.dyes 3.self-raising flour 4.muesli 5.copper wire 6.distilled water 7.table salt 8.milk 9.br

jenyasd209 [6]

Answer: Mixture: Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance: Copper wire, distilled water, table salt, oxygen.

Explanation:

Mixture is a substance which is made up two or more number of compounds which chemically inactive and retain their distinct chemical properties.

Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance is defined as anything with uniform and unchanging composition is known s pure substance.

Copper wire, distilled water, table salt, oxygen.

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2 years ago

A piece of limestone erodes due to acid rain. This process can be best described as a......

arsen [322]

Slow chemical change

It is a chemical change because the erosion is due to the chemical reaction between the acid and the in the rain and the calcium carbonate.

It is slow due to the concentration of acid is low.

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2 years ago