Why is important to use the same ink dots for both the alcohol and oil experiments?

If substances B and C are both in the gas phase and are at the same energy level, which of the two substances will need to have

ss7ja [257]

Answer:

Substances can change phase—often because of a temperature change. At low temperatures, most substances are solid; as the temperature increases, they become liquid; at higher temperatures still, they become gaseous.

The process of a solid becoming a liquid is called melting. (an older term that you may see sometimes is fusion). The opposite process, a liquid becoming a solid, is called solidification. For any pure substance, the temperature at which melting occurs—known as the melting point—is a characteristic of that substance. It requires energy for a solid to melt into a liquid. Every pure substance has a certain amount of energy it needs to change from a solid to a liquid. This amount is called the enthalpy of fusion (or heat of fusion) of the substance, represented as ΔHfus. Some ΔHfus values are listed in Table 10.2 “Enthalpies of Fusion for Various Substances”; it is assumed that these values are for the melting point of the substance. Note that the unit of ΔHfus is kilojoules per mole, so we need to know the quantity of material to know how much energy is involved. The ΔHfus is always tabulated as a positive number. However, it can be used for both the melting and the solidification processes as long as you keep in mind that melting is always endothermic (so ΔH will be positive), while solidification is always exothermic (so ΔH will be negative).

6 0

3 years ago

Which of these is most likely to form between elements transferring electrons to

Stella [2.4K]

Answer: The answer is an ionic bond

6 0

3 years ago

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The following name is wrong. Draw the structure based on it and correct the name: 1,1,1âˆ’trimethylheptane

Nana76 [90]

2,2-Dimethyloctane is the correct name.

Eight C atoms make up the longest continuous carbon chain, hence the term "octane" for this molecule.

<h3>Description of the chemical structure</h3>

There are 31 bonds in the 2,2-Dimethyloctane molecule overall (s) There are 5 rotatable bonds and 9 non-H bonds (s).
Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
In the 2,2-Dimethyloctane chemical structure, the carbon atoms are implied to be at the corner(s) and hydrogen atoms coupled to carbon atoms are not mentioned; instead, it is assumed that each carbon atom is connected to enough hydrogen atoms to form four bonds.
Based on the ball-and-stick model, which shows both the three-dimensional position of the atoms and the bonds tying them together, the 3D chemical structure image of 2,2-Dimethyloctane is created.
In order to provide a clearer picture of the atoms and bonds throughout the 2,2-Dimethyloctane chemical structure model, the radius of the spheres is thus smaller than the rod lengths.

<h3>Molecular Formula - $C_{10} H_{22}$ </h3><h3>Chemical Properties</h3>

Calculated Log P: 6.434
Molecular Weight: 142.2838
Bonds That Rotate: 9
H Acceptors :

H Donors: 0

2,2-Dimethyloctane, a gasoline hydrocarbon byproduct of aerobic biodegradation.

learn more about Dimethyloctane here

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4 0

2 years ago

At STP, which of these substances is most soluble in H2O? (1) CCl4 (3) HCl (2) CO2 (4) N2

san4es73 [151]

The correct answer is option 3. Hydrochloric acid is the most soluble in water at standard temperature and pressure because it is has a polar covalent bond which makes it a polar molecule. Water is also a polar substance therefore hydrochloric acid will really be soluble in water.

4 0

3 years ago

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I am a subatomic particle that is positively charged what am I?

lions [1.4K]

The right answer is Proton.

Additional Information:

There are three types of subatomic particles. They are:

Proton
Electron
Neutron

Proton is a positively charged particle,Electron is negatively charged particle and Neutron is charge less.

Hope it will be helpful to you...

6 0

3 years ago