Which of these processes involves the splitting of an atom?nuclear fusionchemical reactionnuclear fissionphysical change

Answers

Answer 1

Answer: the process of splitting an atom into two nuclei is the nuclear fission

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Every chlorine atom has

Which metal is more active than H2?
(1) Ag (3) Cu
(2) Au (4) Pb

Answers

Answer is (4) - Pb.

According to the reactivity series of elements

- the elements which are above the hydrogen are more reactive than hydrogen.

- the elements which are below the hydrogen are less reactive than hydrogen.

Among the given choices, only Pb is placed above the hydrogen in the reactivity series and rest are below the hydrogen.

Hence, Pb is more active than hydrogen.

Carbon-14 is the typical radioisotope used to date materials; however, it has a limitation to 40,000 years. A scientist who wants to date materials older than 40,000 years would most likely use ?

Answers

A scientist who wants to date materials older than 40,000 years would most likely use Potassium – argon dating or K-AR dating. Potassium-40 is a radioactive isotope of potassium that decays into argon-40. The half life of potassium-40 is 1.3 billion years far longer than carbon-14.

Answer:The answer would be uranium-238 hope this helps

Explanation:

The mutual force of attraction between ions of opposite charges acn best be described as...A) an ionic bond
B) a polar covalent bond
C) an electronegative bond
D) a non-polar covalent bond

Answers

The mutual attraction of oppositely charged ions is called the ionic bond. Polar covalent bond is composed of unequal sharing between of non-metal elements which are non-ionic. Non-polar bond is composed on the other hand of equal sharing of these non-ionic elements. Hence, the answer is A.

Answer:

A) an ionic bond

Explanation:

The mutual force of attraction between ions of opposite charges can best be described as an ionic bond.

In an ionic bond, an atom picks up electrons from the other so it becomes into a strongly electronegative atom while the other becomes into a strongly electropositive atoms and, as ions of different signs, it is generated an electrostatic attraction force between them.

The two ends of a solenoid act likea. electrons.
b. a compass needle.
c. a circuit.
d. poles.

Answers

Answer:

d. poles

Explanation:

Magnetic field created by a solenoid:

The magnetic field created by a solenoid is increased by increasing the intensity of the current, by increasing the number of turns and by introducing a piece of iron inside the coil (electromagnet).

Solenoid coil with air core constructed with bare copper wire spirally wound and protected with insulating varnish. If we supply this coil with electric current using any source of electromotive force, such as a battery, for example, the flow of the current that will circulate through the coil will lead to the appearance of a magnetic field of a certain intensity around it.

Solenoid coil to which a metal core such as iron (Fe) has been introduced. If we compare the previous coil with air core with the coil of this illustration, we will see that now the lines of magnetic force are much more intensified as they have become an electromagnet.

D) The Answer Is Poles

Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?A.
chromosome

B.
chloroplast

C.
Golgi body

D.
ribosome

Answers

In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, andprotein combine to form a nucleoprotein called a ribosome. The ribosomeserves as the site and carries the enzymes necessary for proteinsynthesis. They are often takes the shape of small round particlesattached in the endoplasmic reticulum. The ribosome attaches itself to m-RNAand provides the stabilizing structure to hold all substances in position asthe protein is synthesized. Several ribosomes may be attached to a single RNAat any time.

i believe that the answer is B , chloroplast. you can work out the problem any other wat too.

i hope this helps

How can a mixture of nails and sawdust be most efficiently separated into its component parts?

Answers

I am pretty sure that sawdust float in water so you could dump the mixture in water so that all of the sawdust float on the surface while the nails sink to the bottom.

You might also be able to use a strong magnet since nails are usually magnetic while sawdust is not.

I hope this helps. Let me know if anything is unclear or if you need a different method.

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In relation to the earth's surface, explain where rock spend most of there time.

Lysine is used as a topical medicinal skin creme. what is the molecular formula of lysine if the empirical formula is c3h7no, and the approximate molar mass is 146 g/mol