In the system model, the direction of the
arrow tells you that

Answer:

Correct

Explanation:

It means that there are an equal amount of hydroxyl and hydrogen ions, hence it is a neutral solution.

Answer:

NaCl sodium chloride is an ionic salt. Also commonly known as table salt. When you put sodium chloride in water, the molecule dissolves in water because the covalent bonds of water (H2O) is stronger than the ionic bond of NaCl.

Explanation:

To be more specific, the two hydrogen (+) molecules are attracted to the chlorine due to its negative charge. The oxygen (2-) of the water is also attracted to the Na (+). Water eventually pulls Sodium Chloride apart (breaks ionic bond) and dissolves it.

Answer:

All I know is these things hope they help u.

A polar aprotic solvent is a polar solvent that does not have a hydrogen atom.

A polar protic solvent is a solvent that contains hydrogen. Water, ethanol and acetic acid are all examples of a polar protic solvent. A polar aprotic solvent is a polar solvent that does not contain hydrogen. Dimethyl sulphoxide, acetonitrile and dichloromethane are all examples of polar aprotic solvents.

The following are true about polar aprotic solvent.

Polar aprotic solvents solvates cations because the negative end of the dipole can interact well with the cation. Polar aprotic solvents interacts with ions by ion - dipole interaction.

Learn more: https://brainly.com/question/14685564

Answer:

Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules.

Answer:

igneous,sedimentary,and metamorphic

Explanation:

Rocks are collections of minerals of various sizes and types. The three main rock types are igneous, sedimentary, and metamorphic. Crystallization, erosion and sedimentation, and metamorphism transform one rock type into another or change sediments into rock.

B.)because they are packet tight

Answer:

Because they are packet tight.

Explanation:

Solids maintain their volume and shape because they are packet tight.

Answer:

mixture of nitrogen B

Explanation:

ok

Answer:

Molecule of diatomic nitrogen

Explanation:

di means 2.

Since, 2 Nitrogen atoms are there, they share their electrons and form a molecule of diatomic nitrogen.

Explanation:

mg2+ would be the smaller ion this is because each ion has the same number of electrons however mg2+ has a greater number of protons and therefore is more charge dense and the outer electrons feel a greater pull from the nucleus.

I hope it's helpful!!

Answer:

Scientists describe any substance that shatters or breaks easily as being brittle.  

Explanation:

Brainliest?

Refer to the attachment

Answer: 20

Explanation: For example, all calcium atoms have an atomic number of 20 but there are three isotopes of calcium - 39, 40, and 42.

Answer: Density, Volume, Shape

Answer:

218.09g

Explanation:

the formula for density is mass/volume

you have volume so rlly what you have is 19.3g/cm3=m/11.3cm3

so mass equals density x volume

and 19.3 x 11.3 = 218.09

Answer:

Its formula is B) XY3,also known as ammonia,because X is hydrogen and Y is nitrogen.

So,yeah the answer is B

Pls mark me as brainliest

The electronic structures of atoms X and Y are shown. X and Y form a covalent compound. The formula is XY₃. The correct option is B.

Covalent bonds are the strongest bonds present between chemical elements. This bond is formed by sharing electrons between the elements.

Two atoms share electrons with each other and form bonds between them. They are the strongest because there is sharing of electrons between them.

There are five electrons present in the outer shell of the Y atom. There are two atoms more needed to complete the orbital of Y. There is one electron present in the X atom.

Those compounds that are formed by the covalent bond are the strongest compounds. So they are not easy to break them.

Thus, the correct option is B. XY₃.

To learn more about covalent bonds, refer to the link:

https://brainly.com/question/19382448

#SPJ2

 Example, when sulfur is burned in the air (one of my favorite chemical reactions) it combines with oxygen in the air to form an oxide. We consider this reaction in the form of a chemical equation: S (sulfur) + O2 (oxygen) |> SO2 (sulfur dioxide)

Answer:

A neutral atom of Carbon-12 contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12 (six protons plus six neutrons).

Carbon-13 (13C) is a natural, stable isotope of carbon with a nucleus containing six protons and seven neutrons and six electrons.

Neutral carbon-14 contains six protons, eight neutrons, and six electrons; its mass number is 14 (six protons plus eight neutrons).

Hope this helps! =D

The number of electrons, protons and neutrons in carbon -12 are all 6 and in carbon-13 they are 6, 6, and 7 respectively and in carbon-14 it is 6, 6,and 8 .

Isotopes are atoms of same element with different mass numbers. Isotopes slightly differ in physical and chemical properties also. Most of the element in periodic table have isotopes however, not all of them are stable and abundant.

The number electrons and protons in a neutral atom is equal. Mass number of an atom is the sum of number of protons and neutrons. In carbon -12, the number of electrons and protons and neutrons is 6 and the number of neutrons in carbon -13 is 7.

The number of electrons and protons is 6 and that of carbon- 14 is 7. Therefore, all these isotopes are having same atomic number but differ in neutrons numbers.

Find more on carbon:

https://brainly.com/question/13719781

#SPJ2

Let required moles be x

[tex]\\ \sf\longmapsto \dfrac{2}{6}=\dfrac{x}{75}[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{3}=\dfrac{x}{75}[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{75}{3}[/tex]

[tex]\\ \sf\longmapsto x=25mol[/tex]

2moles of H2O are made when 6moles of HNO3 are consumed

75 mole of HNO3 produces = [tex]\frac{2}{6}[/tex]× 75 ⇒ 25 moles of water

The limiting reagent is the reactant that is completely used up in a reaction and thus determines when the reaction stops.

S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O

6 mole of HNO3 produces = 2 moles of H₂O

1 mole of HNO3 produces = [tex]\frac{2}{6}[/tex] mole of H₂O

∴ 75 mole of HNO3 produces = [tex]\frac{2}{6}[/tex]× 75 ⇒ 25 moles of water

Learn more about Limiting Reagent here :

https://brainly.com/question/23661051

#SPJ2

Answer:

Scientific laws can be written as mathematical equations, so they are called quantitative. However, there aren't very many laws in biology. They are more common in physics and chemistry.

Explanation:

Answer:

fluorine

Explanation:

Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative

[tex] \huge\begin{gathered} {\underline{\boxed{ \mathcal {\red{Answer}}}}}\end{gathered}[/tex]

Positive and negative ions attract each other and combine with each other to yield ionic compounds and they are separated easily to conduct electricity.

Answer:

the answer is c. 900 joules of heat

Explanation:

Answer:

Around 129 galons

Explanation:

if you divied 3,241 by 4 you get 129 gallons but if you times that by 25 you get 3,225 so a little bit off but close.

Answer:

shale

sandstone

limestone

Explanation:

These fossiliferous rocks are extensively developed in Nepal, particularly in Thak Khola (Mustang), Manang, and Dolpa. This zone is around 40 kilometers broad and is made mostly of fossiliferous sedimentary rocks.

Answer:

HNO3 is the answer HNO3 is the answer

Explanation:

Acetyl CoA links glycolysis and pyruvate oxidation with the citric acid cycle. In the presence of oxygen, acetyl CoA delivers its acetyl group to a four-carbon molecule, oxaloacetate, to form citrate, a six-carbon molecule with three carboxyl groups.

Acetyl Co-A  is a common output of glycolysis, pyruvate oxidation and citric acid cycle.

Acetyl Co-A links glycolysis and pyruvate oxidation with the citric acid cycle as in presence of oxygen it delivers its acetyl group  to four carbon molecule  to form citrate a six carbon molecule with three carboxyl groups .

In the citric acid cycle, 2 carbons of acetyl group which were  of acetyl Co-A  are released in form of carbon dioxide a major product of cellular respiration. For each acetyl Co-A which enters citric acid cycle  2 carbon dioxide molecules are released.

The transition reaction is the conversion of 3-carbon pyruvate to 2- carbon acetyl co-A  and 2 molecules of carbon dioxide.

Learn more about acetyl co-A here:

https://brainly.com/question/12885899

#SPJ2

Answer:

the answer is magnesium

Explanation:

Answer:

No one sounds the same in singing everyone has a different pitch, overtones, and sound quality. Now in some songs people harmonize together and that can sound the same in pitch but there are still different pitches and tones.