CHEMISTRY HIGH SCHOOL

An equation that requires energy to run is..?endothermic.


exothermic.


kinetic.


convective.

Answers

Answer 1
Answer: Endothermic, as endo means to take in and thermic means heat or energy as that is what heat is. Exothermic releases heat when it occurs and kinetic is a form of energy, energy that is doing work. Convective or convection is heat in a liquid cycling, meaning going in a cycle or heating in a circular pattern.

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A covalent bond in which electrons are shared unequally isa. polar.b. a double bond.c. ionic.d. polyatomic.
What are a few examples of what energy is?​
Part AGiven the following equation, N2O(g) + NO2(g) → 3 NO(g) ΔG°rxn = -23.0 kJ Calculate ΔG°rxn for the following reaction. 18 NO(g) → 6 N2O(g) + 6 NO2(g) Answer Choices To Choose From: A) -3.83 kJ B) -138 kJ C) -23.0 kJ D) 23.0 kJ E) 138 kJ Part B CO2(g)→C(s)+O2(g)ΔH∘rxn= +393.5 kJ (ΔSsys<0, ΔSsurr<0) In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction in part D will be spontaneous A) The reaction is spontaneous at all temperatures. C) The reaction is spontaneous at high temperatures. D) The reaction is nonspontaneous at all temperatures.
Which of these best describes the difference between the formulas for nitrogen monoxide and nitrogen dioxide? Which of these best describes the difference between the formulas for nitrogen monoxide and nitrogen dioxide? F. Nitrogen monoxide has one more atom of nitrogen. G. Nitrogen dioxide has one fewer atom of oxygen H. Nitrogen monoxide has one fewer atom of oxygen J. Nitrogen dioxide has one more atom of nitrogen show more Which of these best describes the difference between the formulas for nitrogen monoxide and nitrogen dioxide? F. Nitrogen monoxide has one more atom of nitrogen. G. Nitrogen dioxide has one fewer atom of oxygen H. Nitrogen monoxide has one fewer atom of oxygen J. Nitrogen dioxide has one more atom of nitrogen
18. Which of the following reactions are endothermic or exothermic? Explain your answers. A. When a certain amount of potassium nitrate is dissolved in water, the water temperature drops from 23°C to 18°C. B. Jack cooks himself a steak. C. When cold water is mixed with sulphuric acid, the mixture can rapidly reach the boiling point of water. D. A flare burns up slowly.

Which best explains why nuclear reactions release more energy than chemical reactions?The forces holding the nucleus together are much stronger than the forces binding electrons to atoms.
Protons have a much higher mass and energy than either neutrons or electrons.
During a chemical reaction, some of the mass of the reactants is converted to energy.
In nuclear reactions, all neutrons are converted to energy.

Answers

I think the best answer is the first statement. The forces holding the nucleus together are much stronger than the forces binding electrons to atoms. Breaking the former bonds are releases more energy than breaking bonds in a chemical reaction.

Answer:

the asnwer i know for a fact is between A and C  but its A

Explanation:

we know B and D are wrong for sure so its left in between A and C but

A its the one that make sense most : )

HELP!!! ILL GIVE BRAINLIEST! Why do nuclear power plants use fission instead of fusion?
A: Scientists have not yet gotten a fusion reaction to happen on Earth.
B: Per gram of fuel, fission releases more energy than fusion.
C: The energy from fusion cannot yet be converted to electricity.
D: Fusion requires conditions that use too much energy to maintain.

Answers

According to the nuclear fission and nuclear fusion reactions,energy from fusion cannot yet be converted to electricity.

What is nuclear fission and nuclear fusion?

There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.

In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.

In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.

Learn more about nuclear fission and nuclear fusion,here:

brainly.com/question/10104286

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C. The Energy from fusion cannot yet be converted to electricity.

Fusion results in a lot of energy. The sun uses fusion reactions to burn. So, if we were using fusion reactions, we would have little suns going off. Nuclear bombs often use a combination of fission and fusion reactions to maximize devastation. However, we do not currently have the ability to control or convert the energy produced by a fusion reaction.

An inherited behavior or physical characteristics that helps an organism survive and reproduce Natural selection Predation Adaptation Competitionlook at pic thanks :D​

Answers

Answer:

it's natural selection

Explanation:

adaptation is when you adapt to some situation

The force most responsible for holding the nucleus of an atom together is the:

Answers

Strong nuclear force. I think that's the one one that holds the nucleons together.

14. How do scientists know that the universe is expanding? The galaxies are moving away from each other, and the temperatures are decreasing. The galaxies are moving away from each other, and the temperatures are increasing. The galaxies are moving toward each other, and the temperatures are increasing. The galaxies are moving toward each other, and the temperatures are decreasing.

Answers

The universe is expanding is as the galaxies are moving away from each other, and the temperature of the universe is decreasing. Therefore, option (1) is correct.

How is the universe expanding?

First scientists theorized that as the universe is expanding and its temperature has gradually decreased. The universe has been expanding since the Big Bang and, as it expands, it’s temperature cooling down.

The temperature of the universe can be measured by looking at the cosmicmicrowave background (CMB). The temperature an be estimated by the thermal radiation left over from the BigBang.

The CMB scientists have been investigating that its temperature has been dropping off gradually as our universe expands out and the current average temperature of the cosmos is estimated about 2.73 Kelvin.

The point of the Big Bang from the Big bang theory is described as densesingularity and infinitely hot. The energy from the Big Bang distributed as the universe expands and gives the cooling effect.

But new research suggests otherwise that the temperature of the earth is actually increasing as it expands.  Therefore, the temperature of universe increasing with its expansion.

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the galaxies are moving away from each other and the temps are decreasing

If a reaction system has come to equilibrium, the concentration of products can be increaseda.
only if it is not reversible.
c.
by applying Le Châtelier’s principle.
b.
only if the temperature is low enough.
d.
under no circumstances.

Answers

If a reaction system has come to equilibrium, the concentration of products can be increased by applying Le Châtelier’s principle. The answer is letter C. The statements "only if it is not reversible",  "only if the temperature is low enough" and "under no circumstances" do not answer the question above.
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