CHEMISTRY MIDDLE SCHOOL

Why is fusion nuclear energy currently not widely used as a source of electricity? Fusion reactions have not yet been achieved.

Fusion reactions cannot be controlled.

Fusion reactions require very high temperatures and pressure.

Fusion reaction energy cannot be converted into electricity.

Answers

Answer 1
Answer:

Answer:

Fusion reactions require very high temperatures and pressure.

Explanation:

Fusion reactions are nuclear reactions where two small nuclei combine or fuse together to give a larger nuclei or different nuclei with some more sub atomic particles.

The source of energy in sun is fusion reaction between hydrogen to give helium nucleus.

For fusion of two nuclei , a particular energy barrier is to be overcome by the nuclei to come closer.

For this a large amount of initial energy (which is attained by high temperature and high pressure) is required. Hence this makes the candidature of nuclear fusion less favorable as compared to fission.
Answer 2
Answer: it’s C. fusion reactions require very high temperature and pressure

Related Questions

Students are completing a table about a particular subatomic particle that helps make up an atom.A 3-column table with 2 rows. The first row has entries Mass (a m u), location, charge. The second row has entries 1/2,000, nothing, has a charge.What best explains how they should complete the table?with “Inside the nucleus,” because the particle is a protonwith “Inside the nucleus,” because the particle is a neutronwith “Outside of the nucleus,” because the particle is a protonwith “Outside of the nucleus,” because the particle is an electron
What do all four of these molecules have in common? A.They are essential to life.B.They carry signals.C.They are water soluble.D.They act as a source of energy
Please helpRadiocontrast dyes are considered safe because the isotopes have short half-lives and the isotopes coat the gastrointestinal tract and are not absorbed by normal tissue. If a patient ingests 10.0 mg of iodine, how long until the iodine-134 is 99% out of the patient's system if the half-life of iodine-134 is 52.6 minutes?
How many liters of 0.760 Molar NaOH are needed to completely neutralize 145 mL of 11.33 Molar HCL
How would the kinetic energy of a 12,000 kg train compare with the kinetic energy of a 900 kg compact car if both were traveling at the same speed?A. the trains kinetic energy would be equal to the cars kinetic energy. B. The trains kinetic energy would be greater than the cards kinetic energy. C. The trains kinetic energy would be less than the cars kinetic energy.

You have 17 grams of water and you increase the temperature by 15 degrees Celsius how many joules did this take?a. 255
b. 1067
c. 1.13
d. 63

Answers

Answer: the correct answer is option(d).

Explanation:

Energy required ,Q= ?

Mass of water , m = 17 grams

Temperature difference or\Delta T = 15 °C

Specific heat value of water = 4.186 J/g °C

Q=mc\Delta T=17* 4.186 J/g^oC* 15^oC=1,067.43 J\approx 1,067 J

From the given value the , nearest value to to our calculated answer is 1067 J that option (b).

Hence, the correct answer is option (d).

Which of the following best describes a mixture? *two or more substances combine and cannot be separated

two or more substances combine chemically

two or more substances combine but keep their physical properties

two or more substances combine and create an irreversible reaction

Answers

Mixtures are combination of two or more substances which can be separated based on their physical properties. Hence, option c best describes a mixture.

What are mixtures?

Mixtures are substances formed by the combination of two or more individual components. The mixing can be of physical or chemical type. The individual components can be separated using some techniques based on their physical properties.

There are both homogenous mixtures and heterogenous mixtures. In homogenous mixtures the components are uniformly mixed and form a single phase.

Heterogenous mixtures are composed of components forming different phases. They can be easily separated using simple techniques. Irrespective of the type of mixing, the physical properties of the components are maintained as such in a mixture. Hence, option c is correct.

Find more on mixtures:

brainly.com/question/24898889

#SPJ2

Answer: two or more substances combine but keep their physical properties or two or more substances combine and create an irreversible reaction.

Explanation: Because i tried the other two and they didnt work so yeah thats life and i got a d on my test thx for the wrong info person before me.

What should be the effect of losing ones sight on the ability to digest food

Answers

One mechanism is enzyme induction.

Enzymes are proteins, which are metabolically expensive to produce. It makes evolutionary sense that your body makes less digestive enzymes such as lactase and sucrase when they're not needed. If your diet changes, your body can gradually increase the production of some enzymes through a process of enzyme induction.

For example, the production of lactase enzyme can be increased in some lactose-intolerant individuals by feeding them lactose . Also, studies in rats have shown that other carbohydrate-digestiYour body makes more of what it needs, and less of what it doesn't need--brilliant!ng enzymes, such as sucrase-isomaltase, trehalase, and maltase-glucoamylase--can be induced by hydrocortisone administration. 

Light is shining in the different objects shown. which of these materials absorbs the light most?

Answers

Hey! Ur in K12 2! I am in K12. lol. Anyways, the answer would be D. I think I've done this lesson before
I am almost 100% sure that it is D

A pitcher accelerates a baseball with a mass of 1.5 kg at 6m/s2. How much force does this take?

Answers

F=m x a
F=force.
m=mass
a=acceleration

Data:
m=1.5 Kg
a=6 m/s²

F=1.5 kg x 6 m/s²=9 Newtons.

answer: the force will be 9 Newtons. 

Name two animals that are omnivores. Give an example of a plant and an animal that each one might eat.

Answers

Brachiosaurus was a plant eater.
Tyrannosaurus Rex was a meat eater 
An Oviraptor and Troodon were Omnivores
a certain dinosaur was a planteater but thats all i know i hope it helps
Other Questions
Guys, please help me and tell me how you found the answer! If a gas has a pressure of 1.69 atm at a temperature of 300 K, what will the pressure change to if the container is cooled to 100 K? AlsoIf a gas has a pressure of 715 mm Hg at the temperature of 500 K, what will the pressure change to if the container is heated to 900 K?
Amy is at basketball practice. She is about to shoot a free throw. When she releases the ball the ball will not have kinetic energy but will have potential energy. the ball will have kinetic energy but will not have potential energy. the ball will have kinetic energy and potential energy. the ball will have neither kinetic energy nor potential energy.
How many liters of CO2 form at STP if 5.0 g ofCaCO3 are treated with excess hydrochloric acid?
Moving water can be used to produce electricity becausea. most forms of energy can be converted into other forms b. energy cannot be converted into other forms of energy c. potential energy can be converted into kinetic energy, but not vice virsa d. kinetic energy can be converted into potential energy, but not vise virsa