CHEMISTRY HIGH SCHOOL

A researcher is using a particle accelerator in an experiment studying isotopes. How can the researcher change one isotope into a different isotope of the same element?by removing valence electrons

by adding valence electrons

by adding or removing protons

by adding or removing neutrons

Answers

Answer 1
Answer: The researcher can change one isotope into a different isotope of the same element by adding or removing neutrons. This is because, isotopes are two or more forms of an element which contain equal number of protons and electrons but different number of neutrons. Isotopes differ in relative atomic mass but have same chemical properties.
Answer 2
Answer:

Answer: by adding or removing neutrons

Explanation:

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(50 POINTS AND WILL GIVE BRAINLY!) which actions will help a package of hot chocolate powder to dissolve more quickly? a. heating the water
b. using pure water
c. blowing on the hot water
d. putting the powder and hot water in a mixer

Answers

A , i think because pure water won't dissolve the powder fast.

Elements have been discovered with up to how many energy levels

Answers

20 because each row has 20 columns  

If two oxygen atoms combine to make a molecule, what type of bond will they form

Answers

They will form a diatomic molecule, bonded by covalent bond. 2 atoms of oxygen because it 1 atom cannot be stable as 2 together....
.... I hope it helps

Final answer:

Two oxygen atoms form a stable molecule by sharing two pairs of electrons, forming a double covalent bond. This is an important process for achieving the required octet electron configuration for both oxygen atoms.

Explanation:

When two oxygen atoms combine to form a molecule, the type of bond they form is a double covalent bond. An atom of oxygen has six electrons in its valence shell and it requires two more to achieve stability, hence, the oxygen atom achieves this equilibrium by sharing two pairs of electrons forming a double covalent bond. This is similar to the example of hydrogens and an oxygen atom sharing electrons to form a water molecule, where covalent bonds are also present.

The creation of a double bond occurs as these atoms share more than one pair of electrons to attain the required octet configuration. This could also be seen in bonds formed between carbon and oxygen atoms in formaldehyde (CH₂O), or between carbon atoms in ethene (C₂H4).

The covalent bond formed between these two oxygen atoms is, therefore, a key component for them to form a stable molecule.

Learn more about Double Covalent Bond here:

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_________ refers to the total energy of a system.a. Enthalpy
c. Entropy
b. Heating curve
d. Free energy

Answers

    Enthalpy refers to the total energy of a system. Hope this helped!

Answer:   a. Enthalpy

Explanation:

Alcohol contains __________
a. ethanol.
b. gasoline.
c. opiates.

Answers

Answer:

Alcohol contains A. ethanol.

Explanation:

Alcohol beverages are drinks that contain more than a minimal amount of ethyl alcohol or ethanol. Ethanol is a chemical compound, considered the main type of alcohol. It is produced by grain fermentation and used as a solvent, as an additive to gasoline and as the intoxicating ingredient of beer, wine, distilled spirits and other beverages.

the answer is A. Ethanol. Ethanol is an active principal in alcoholic beverages

What are the intermolecular forces that exist between molecules of NH3, H2O and HF called ?

Answers

I think, is HYDROGEN BOND!
This is some kind of  is the electrostatic attraction between polar molecules that occurs when a hydrogen (H) atom bound to a highly electronegative atom such as nitrogen (N), oxygen (O) or fluorine (F)... see image below! ;-)

Final answer:

The intermolecular forces that exist between molecules of NH3, H2O, and HF are hydrogen bonding, dipole-dipole interactions, and London dispersion forces.

Explanation:

The intermolecular forces that exist between molecules of NH3, H2O, and HF are called hydrogen bonding, dipole-dipole interactions, and London dispersion forces. Hydrogen bonding occurs between a hydrogen atom bonded to a highly electronegative atom (such as O, N, or F) and a lone pair of electrons on a nearby molecule. Dipole-dipole interactions occur between molecules with permanent dipole moments, while London dispersion forces occur due to the temporary formation of induced dipoles in adjacent molecules.
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