Use the equation of sodium chloride dissolving in water to complete the activity.

NaCl(s) ⇄ Na+(aq) + Cl–(aq)

A student is testing two clear liquids. One liquid is water that has been modified to have a basic pH. The other liquid is a sports drink that contains added electrolytes, including Na+(aq). How can the student use the equilibrium reaction of sodium chloride to determine which liquid is which? In three to five sentences, explain your answer.

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of metal = 4 cm³

density = 7.85 g/cm³

The mass is

mass = 7.85 × 4

We have the final answer as

Hope this helps you

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

Valence electrons affects ion formation by transferring from one atom to another atom.

Valence electrons are the outermost electrons in an atom and are involved in the formation of ions. Ions are atoms or molecules that have a net electric charge due to a surplus or deficiency of electrons. When an atom forms an ion, it either gains or loses electrons to achieve a more stable electron configuration. The number of valence electrons in an atom determines how easily it can gain or lose electrons to form ions. Atoms with few valence electrons, such as alkali metals, tend to lose those electrons easily to form positive ions. Atoms with many valence electrons, such as halogens, tend to gain electrons easily to form negative ions. The number of valence electrons also affects the charge of the ions that are formed. Atoms with fewer valence electrons will form ions with a higher charge, while atoms with more valence electrons will form ions with a lower charge.

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The lightest or least massive of the fundamental atomic particles are electrons. Correct answer: letter E

Electrons have a mass of 9.109 × 10^−31 kg, which is much smaller than the masses of protons (1.672 × 10^−27 kg) and neutrons (1.674 × 10^−27 kg).

The amount of energy an electron has is related to its location within an atom. Electrons can exist in discrete energy levels, and can be moved between them by providing energy in the form of light or heat. This movement of electrons between energy levels is responsible for most of the physical and chemical properties of atoms and molecules. Electrons can also form bonds between two atoms, allowing them to form molecules and compounds.

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Answer:

bioremediation

Explanation:

Answer:

See Explanation

Explanation:

The formula of sodium sulphate is Na2SO4. The component atoms in the compound are; sodium, sulphur and oxygen.

The compound is ionic. it is composed of sodium ions and sulphate ions.

The molar mass of sodium sulphate = 142 g/mol

percentage by mass of sodium =  2* 23/142 * 100 = 32.39 %

percentage by mass of sulphur = 32/142 * 100 = 22.5%

percentage by mass of oxygen = 4 * 16/142 * 100 = 45.1 %

Answer:

Mixture

Explanation:

A mixture has two or more substances that are together in the same place but are not chemically combined .

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D. HF will have the most polar bond out of all the options.

As we see in the group from up to down the electronegativity of the substances decreases. The ability of an atom or functional group to draw electrons to itself is known as electronegativity in chemistry. An atom's electronegativity is influenced by both its atomic number and how far away from its charged nuclei its valence electrons are located.

A kind of covalent bond where the distribution of electrons between the two atoms is uneven. As a result, the molecule has a slight positive charge on one end and a slight negative charge on the other.

From all the compounds given here the fluorine atom has the highest electronegativity and hence it will most strongly attract the atoms towards itself and hence its bond with hydrogen will be the most polar.

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Solution A with pH of 8 has greater concentration of hydronium ions as compared to solution B with pH of 13.5.

pH = -log [H3O+]. By using the opposite mathematical procedure from that used to determine the pH, the hydronium ion concentration can be calculated from the pH.

The pH lowers as the hydronium content rises, making the fluid more acidic. When an acid is introduced, this happens. The solution's hydronium concentration rises when H+ ions separate from the acid and join with water to produce hydronium ions.

Any time an acid dissolves in water, the hydronium ion is created. The nearest water molecule is always where the acid's H+ moves to produce H3O+. Take the perspective of the proton (H+) to see the hydronium ion from a different angle. Hydration refers to the addition of water to anything.

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Answer:4.0 liters of everything

Explanation: i just know...

Answer:

fluorine

Explanation:

The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the periodic table, and the halogens are the most reactive...

Answer: Fluorine

Explanation: Gradpoint

Answer:

Because the ideas about the models changed as more discoveries were made about the atom

Explanation:

I know because i took this test and made a 100% on it

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The equilibrium constant is the ratio of the reactants to the products which is 2.

The equilibrium constant shows the extent to which the reactants are converted into products. The equation of this reaction could be written from the number of molecules of the reactants.

Let the reactants be A and B and the product C, the reaction equation thus becomes;

The equilibrium constant is the ratio of the reactants to the products which is 2.

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Answer:hope this help

Explanation:

Explanation:

The air around the equator has a high temperature, so it has a _lower_____ air pressure

The molecular formula for 2-methyl 1-butene is C₅H₁₀.

Generally, the molecular formula is defined as an expression which defines the number of atoms of each element in one molecule of a compound. Molecular formula often shows the actual number of each atom present in a molecule. Let's see an example, the molecular formula of propane is C₄H₁₀. In this molecular formula, basically there are 4 carbon atoms and 10 hydrogen atoms in the given compound.

2-Methyl-1-butene is an organic compound that is used as a solvent in organic synthesis. 2-Methyl-1-butene is basically used in the preparation of pinacolone, flavor enhancer, spice, crop protectants and tertiary amyl phenol.

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Answer:

i think its solar radiation

Answer:

188.1J

Explanation:

obtained from Q=MCT

The solvent that provided the best and clearest separations for the plant pigments in this lab is B) acetone-xylene mix.

In chromatography experiments involving plant pigments, the choice of solvent is crucial in achieving clear and distinct separations of the pigments. Different solvents have varying polarities and interact differently with the pigments, leading to differences in separation.

Among the options provided, the acetone-xylene mix (option B) is known to be a commonly used solvent for plant pigment separations. Acetone is a polar solvent, while xylene is nonpolar. This combination allows for a broader range of pigment solubility and interactions, resulting in better separation of pigments.

Methanol (option A) is also commonly used in plant pigment chromatography but may not provide as clear separations as the acetone-xylene mix. Ether (option C) is a nonpolar solvent that might not effectively separate polar pigments. Acetone alone (option D) might not provide sufficient solubility for all the pigments.

Therefore, based on the information provided, option B) acetone-xylene mix is likely to have provided the best and clearest separations for the plant pigments in this lab.

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Answer:

an oxygen atom with 8 electrons, 8 protons, and 9 neutrons

Explanation:

A proton has a positive charge and an electron has a negative charge. Magnitude of both of these charges is same. So, we need the same number of electrons and protons to make the atom neutral.

Neutron is neutral, so we can safely ignore it in this question.

Answer:

an oxygen atom with 8 electrons, 8 protons, and 9 neutrons

Explanation:

Answer:

1) eathquake

earthquake is the natural calamities where there is the vertical and horizontal shaking of the

earth crust. it is cause due to overlappibg of the different plates that are present in the earth surface. when this plates intersect or expand the earth occurs

consequences are it causes loss of life and human property , degards the environment , it leads to flood, landslides etc The damage caused by earthquakes is from ground shaking, ground rupture, landslides, tsunamis, and liquefaction.

Next - volcanic eruption

its is the out flow of the larva from the inner of the earth to other surface. it is cayse due to high pressure exerted on the surface of the earth that leads to explode the inner larva.

its consequences are it degards the environment and loss of the beauty of the nature , there is loss of human life , widlife , etc. volcanic eruption include infectious disease, respiratory illness, burns, injuries from falls, and vehicle accidents related to the slippery, hazy conditions caused by ash. When warnings are heeded, the chances of adverse health effects from a volcanic eruption are very low.

If FeCl3 dissociated completely in aqueous solution, it would produce four ions per formula unit [Fe3+ (aq) plus 3Cl− (aq)] for an effective concentration of dissolved particles of 4 × 0.0500 M = 0.200 M. The osmotic pressure would be Π = MRT = (0.200mol / L)[0.0821 (L ⋅ atm) / (K ⋅ mol)](298 K) = 4.89 atm 1.

Therefore, the concentration of aqueous FeCl3 that would have the same osmotic pressure as a 0.20 M solution of CaCl2 at the same temperature, assuming ideal behavior is 0.10 M 2.

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Boyle's Law, which states that at constant temperature, a gas's pressure and volume are inversely related, can be used to address this issue.

Boyle's Law says that P1V1 = P2V2.

Where: P1 = The gas's initial pressure (in torr)

V1 is the container's initial volume (in millilitres).

P2 stands for the gas's post-volume change pressure (unknown).

V2 is the revised volume of the container (in millilitres).

Let's solve for P2 by entering the provided values into the equation:

P₁ = 757.2 torr

V2 = 132.5 mL V1 = 81.4 mL

P2 = ambiguous

P₁V₁ = P₂V₂

P2 equals 757.2 torr x 81.4 mL x 132.5 mL.

P2 times 132.5 mL = 61702.08 torr * mL

61702.08 torr = P₂ * 132.5

P2 = 132.5 mL / 61702.08 torr

P₂ ≈ 465.69 torr

as a result, the gas's pressure

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Answer:

droplets of sulfuric acid

Explanation: