CHEMISTRY HIGH SCHOOL

Which state of matter exists at the extremely high temperatures found on stars?

Answers

Answer 1
Answer: Long before when there were still 3 known states of matter to man which were the solid, the liquid, and the gas, the state of matter that existed at the extremely high temperatures found on stars is the gas state. After some time and with the help of scientific aid in this endeavor, a new state of matter was added to the original list which is the plasma. Plasma is like gas since it doesn't have any definite shape or volume. The thing is that its electrons are stripped off from their positions and form a sea of it making the matter conducive to electricity.

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Which organic compound is not only responsible for energy storage, but also can provide thermal insulation? A. lipids B. proteins C. nucleic acids D. carbohydrates E. monosaccharides

Answers

Answer: A. lipids

Explanation:

Lipids are responsible for energy storage. They can also provide thermal insulation in mammals and help them stay warm

How many phases does a solution have?explain

Answers

Did you perhaps mean the phase of matter?If so, then a solution has only one phase of matter: liquid. It is always almost always liquid because solutions are made up of a solvent and a solute and a solvent is always a liquid. Though, some may come in an emulsion form, but still it can be considered as liquid

Final answer:

A solution can exist in three phases: solid, liquid and gas, depending on the temperature and pressure. The pH of the solution can also change based on the nature of ions present in it. Understanding the nature and properties of solutions is crucial for many chemical reaction processes.

Explanation:

A solution can exist in three phases depending on the temperature and pressure, which are: gas, liquid, and solid. These are depicted in a phase diagram (an illustrative depiction that shows the states of a substance under different conditions of temperature and pressure).Consider the phase diagrams for a pure solvent and a solution. When a nonvolatile solute is dissolved in a solvent, a solution is formed. These states coexist and are in a state of thermal equilibrium at specific combinations of pressures and temperatures.

In addition to the physical phase, the pH of the solution can also be considered as a 'phase.' The pH can decrease, increase, or even show a pattern of increase and then decrease depending on the nature of ions present in the solution.

Solutions are crucial to life-sustaining processes as well as other chemical reaction processes. It's important to know the nature of solutions and factors determining its formation and properties for understanding various biological, geological and industrial processes.

Learn more about Solution Phases here:

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A liquid is placed in an evacuated, sealed flask. When will this closed system reach dynamic equilibrium?

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The liquid that is placed in an evacuated sealed flask will reach in dynamic equilibrium if the amount of liquid inside the flask will stop converting into vapor. This process is to balanced the amount of substance of both phases inside the flask. 

Why is tin foil a good insulator

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Tin foil is a heat insulator because it can reflect radiation. When tin foil, for instance, is wrapped around an object, air can be trapped. Trapped air is a good insulator against convection.

An atom in an excited state has an electron configuration of 2-7-2. Explain in terms of subatomic particles, why the excited atom described is electrically neutral.

Answers

The excited atom can be described as electrically neutral because from its electron configuration ;

  • The number of electrons ( 11 ) = Number of protons ( 11 )

From the electron configuration 2-7-2 the number of electrons equals ( 2 + 7 + 2 ) = 11 electrons,  also the number of protons will be = 11 for the atom to be neutral. While the number of Neutron is not significant in the positivity or negativity of atoms.

The subatomic particles contained in an atom are protons, neutrons and electrons ( which are present in the outer most shell ) and represents the electron configuration of an atom. while the number of neutrons is determined by the Isotope.

Hence we can conclude that The excited atom can be described as electrically neutral because from its electron configuration ; The number of electrons = Number of protons .

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Answer:

Number of electrons: 11

Number of protons: 11

Number of neutrons : not enough information.

Explanation:

an atom contains sub atomic particles electrons, protons and neutrons.

Electrons are present in the outer shells.

The given atom contains eleven electrons.

The atom is neutral so the number of electrons will be equal to number of protons. The number of protons will be 11.

The number of neutrons will depend upon the type of isotope.

Any temperature on the Kelvin scale can be changed to Celsius degrees bya. subtracting 100 from it.
b. adding 212 to it.
c. subtracting 273 from it.
d. subtracting 32 from it.

Answers

c. subtracting 273 from it.

C. Subtract 273 from it
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