A negatively charged particle located in the cloud like smear of negative charge of an atom is called a(n)?

When ethanol is added to strawberry extract in the final step, it acts as a solvent and helps to separate the different components of the extract. Adding ethanol to strawberry extract in the final step helps to separate the different components of the mixture and isolate the desired compounds.

Ethanol is a polar solvent, which means that it has a slightly positive charge on one end and a slightly negative charge on the other. This polarity allows it to attract and dissolve other polar molecules, such as sugars and organic acids, which are present in the strawberry extract.

By adding ethanol to the strawberry extract, these polar molecules are extracted from the mixture and dissolve into the ethanol. This process is known as extraction, and it is commonly used in chemistry and biology to isolate specific compounds from complex mixtures.

Once the ethanol has extracted the polar molecules from the strawberry extract, it can be separated from the mixture through a process called filtration or centrifugation. This leaves behind a concentrated solution of the nonpolar compounds in the strawberry extract, such as the flavor and aroma molecules.

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Answer:

affected by the concentration of the The exponents in a rate-law expression define the reactant. O concentration o instantaneous rate O specific rate constant

Explanation:

Answer:

Star 1 and two. Good on exams I'm doing mine two

Answer:star 1 and 2

Explanation:

Answer:

sugar and carbon dioxide

Explanation:

Chemical energy is stored in the bonds of sugars. When the bonds of a sugar molecule are broken, a burst of energy is released that the cell can use. Cells can release energy in two basic processes: cellular respiration and fermentation. Cellular respiration requires oxygen, but fermenta- tion does not.

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A brownfield is a property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.

A “brownfield” generally refers to a parcel of land that was previously used for industrial purposes and which is contaminated by low concentrations of hazardous chemicals.

A brownfield development requires more work and investment upfront: existing structures may have to be demolished, materials must be removed, and developers may have to engage in extensive environmental cleanup to remove pollutants.

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In a 500 ml suitable solvent of silver nitrate at 25 °C, what are the molecular concentrations of each ion? One molecule of agcl separates into one mole each of a+ and cl-.

The chemical solution known as a saturated solution contains the highest concentration of the solute saturated in the fluid. In a solution that is saturated, the extra solute will not dissolve. Ex. Sugar solution. The term "saturated solution" refers to a solution that includes the greatest quantity of the solvent that may be absorbed in a set quantity of the solvents at a specific temperature. The term "saturated solution" means that the results where no more solute may dissolve at a particular temperature.

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The maximum theoretical suction life of a centrifugal pump at sea level is approximately a) 15 feet

The maximum height that any centrifugal pump may theoretically raise water is 10.33 metres above sea level. Suction lift is the vertical distance on the suction side of the pump between the pump impeller and the liquid surface if the liquid is below the pump datum.

The hoover is created by the ground-level pump, which can theoretically raise a maximum of roughly 30 feet (34 feet if a flawless hoover could be created).

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Answer:

the three parts are protons, neutrons, and electrons

Explanation:

have a good day

The appearance of a color change in the solution during the titration is an observation that could have led the student to conclude that a chemical change took place.

One observation that could have led the student to conclude that a chemical change took place during the titration is the appearance of a color change in the solution.

During a titration, a chemical reaction typically occurs between the analyte (the solution being titrated) and the titrant (the solution being added). The reaction between the two substances may result in a change in the chemical composition, leading to the formation of new products.

In some titrations, an indicator is used to visually signal the endpoint of the reaction. Indicators are substances that undergo a color change in response to a change in the pH or chemical composition of the solution. They can be added to the analyte or the titrant to help detect when the reaction is complete.

If a color change is observed during the titration, it indicates that a chemical change has occurred. For example, if the analyte solution is colorless or has a certain color initially, and it changes to a different color during the addition of the titrant, it suggests that a reaction has taken place, resulting in the formation of new substances with different optical properties.

This color change is a visual indication that a chemical transformation has occurred during the titration process. It can be used to determine the endpoint of the reaction and calculate the concentration or amount of the analyte present in the solution.

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Note the complete questions is;

The student made observations related to the contents of the Erlenmeyer flask during the titration. Identify an observation that could have led the student to conclude that a chemical change took place during the titration.

The pH is about 7.5 and the value of bicarbonate in the blood is high indicating a case of respiratory alkalosis.

The term respiratory alkalosis refers to a situation in which an analysis of the arterial blood gas shows a high level of alkalinity and a high pH.

In this case, we can see that the pH is about 7.5 and the value of bicarbonate in the blood is high indicating a case of respiratory alkalosis.

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Answer:

Electrons are the smallest of the particles that make up an atom, and they carry a negative charge.

Answer:

Electrons are the smallest subatomic particles that make up an atom. They have a mass of 1/1836 amu's or 0 amu's (no mass) Electrons are located in the electron cloud and have a negative charge.

Explanation:

Hope that helps

The volume and temperature changes in according to Charles' law will be:

The relationship between the volume and temperature of a given mass of gas is given by Charles' Iaw which states that volume is directly proportional to temperature if a gas in Kelvin.

To complete the tables volume and temperature changes:

Therefore, volume and temperature are directly proportional.

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Answer:

I think it's B or A. Though I believe it is more so B. I think I'm right though.

Explanation:

Answer:

Pressure

Explanation:

Answer:

It was the fifth radioactive element discovered, and is typically a colorless gas that puts off an insane glow when frozen.

The mass of iron which is needed to react with 16.0 grams of sulphur is 28 grams

How to balanced the given equation?

The balanced chemical equation for the reaction between iron and sulfur  to form iron sulfide is:

8 Fe + S₈ → 8 FeS

From the balanced chemical equation, we can see that 8 moles of Fe react with 1 mole of S₈ to form 8 moles of FeS.

To determine the mass of iron required to react with 16 grams of sulfur, we first need to calculate the number of moles of sulfur present in 16 grams of S.

The molar mass of S is 32.06 g/mol (the atomic mass of S is 32.06). Therefore, the number of moles of S in 16 grams is:

n(S) = m(S) / M(S) = 16 g / 32.06 g/mol = 0.499 mol

The molar mass of 8 moles of iron will be 448 grams

∴56 × 8 = 448 grams

Similarly the molar mass of S₈ will be 256 grams

∴32 × 8 = 256 grams

Therefore,

256gram of Sulphur needs 448 gram of Iron

So 16 gram of sulphur will  ?

cross multiply

The mass of Iron needed =( 16 × 448) ÷256

= 7168 ÷ 256

Hence by solving the above equation we can find the mass of iron which is 28 grams

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If the connections in the apparatus are not airtight and some hydrogen gas escapes during the reaction, the reported value for the gas law constant will be too low.

This is because gas law constants, such as the ideal gas law constant (R), are calculated using the ideal gas law equation, PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, T is temperature, and R is the gas law constant.

If some of the hydrogen gas escapes, the measured pressure will be lower than expected, resulting in a lower calculated value for R. This is because R is directly proportional to the pressure of the gas. Therefore, if the pressure is lower than expected due to some gas escaping, the value of R will be underestimated.

In summary, if some hydrogen gas escapes during the reaction due to non-airtight connections, the reported value for the gas law constant will be too low.

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The compound most likely to dissolve in hexane, a nonpolar organic liquid, is Vitamin K (C31H42O2). Hexane is a nonpolar solvent, meaning it does not have a significant polarity or ability to form hydrogen bonds. Therefore, compounds that are nonpolar or have similar nonpolar characteristics are more likely to dissolve in hexane.

Sugar (C6H12O6) and water, on the other hand, are polar compounds. Sugar has many hydroxyl (-OH) groups, which contribute to its polarity, while water is a highly polar molecule due to its bent shape and oxygen's strong electronegativity. Hexane, being nonpolar, does not have the ability to effectively solvate or interact with these polar compounds, resulting in low solubility.

Ethanol, although partially polar due to the presence of the hydroxyl group (-OH), has a significant nonpolar component. As a result, ethanol has some solubility in both polar and nonpolar solvents. However, its polar characteristics may limit its solubility in a purely nonpolar solvent like hexane.

In summary, among the given options, Vitamin K (C31H42O2) is most likely to dissolve in hexane due to its predominantly nonpolar nature, while sugar, water, and ethanol are less likely to dissolve to a significant extent in hexane due to their polar characteristics.

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Answer:

bro3

Explanation:

Answer:

Explanation:

Here, we want to select the most important information piece to determine saturation

The best way to check for this is to check the kind of bonds between the carbon atoms in the molecule

When there are double or triple covalent bonds between the carbon atoms, then, we can be sure that there is a degree of unsaturation (alkenes, alkynes)

If we have single bonds only, then the molecule is saturated

Answer:

B. One element changes into another.

Explanation:

We can see from the equation that uranium is changed to thorium and helium. Transmutation is the process by which one element is changed to another through radioactive decay, nuclear bombardment, or other similar processes.

Answer:b

Explanation:

Explain ways humans can reduce global warming

The list of ways humans can reduce global warming includes: driving affordable electric cars, increasing the use of wind and solar energy in communities, and reducing water waste like plastic bottles. Greenhouse gases in the atmosphere cause global warming and air pollution. Also, reducing wastage that affects our soil benefits agriculture and freshwater locations. Conserve energy by turning off your lights, walking or riding your bicycle, and invest in solar energy. Solar energy can decrease greenhouse gas emissions in our air that we beathe! Affordable solar energy helps the enviorment and poorer communites with reducing air pollution.

Answer:

0.12 g of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

H2O2 —> H2 + O2

Next, we shall determine the mass of H2O2 that decomposed and the mass of O2 produced from the balanced equation. This is illustrated below:

Molar mass of H2O2 = (2×1) + (16×2)

= 2 + 32

= 34 g/mol

Mass of H2O2 from the balanced equation = 1 × 34 = 34 g.

Molar mass of O2 = 16×2 = 32 g/mol

Mass of O2 from the balanced equation = 1 × 32 = 32 g

Summary:

From the balanced equation above,

34 g of H2O2 decomposed to produce 32 g of O2.

Finally, we shall determine the mass of O2 produced from the decomposition of 0.128 g of H2O2. This can be obtained as follow:

From the balanced equation above,

34 g of H2O2 decomposed to produce 32 g of O2.

Therefore, 0.128 g of H2O2 will decompose to produce = (0.128×32)/34 = 0.12 g of O2.

Therefore, 0.12 g of O2 was produced.

When an aldehyde is treated with a strong base, a carbanion is formed.

A carbanion is a negatively charged ion in which a carbon atom has valency equals to 3 and holds a formal negative charge whose magnitude is at least -1. An aldehyde is a class of organic compounds in chemistry which is characterised by presence of -CHO group. When an aldehyde is treated with a strong base like NaOH,KOH, etc., as a resultant or product we get a carbanion.

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Chemical bonding is the process of combining atoms to form molecules or compounds. A chemical bond between atoms results from the attraction between the valence electrons of different atoms and their nuclei. Covalent bonds are formed when atoms share electrons, and a covalent bond consists of a shared electron pair.

If the two covalently bonded atoms are identical, the bond is nonpolar covalent. However, if there is an unequal attraction for the shared electrons, the bond is polar covalent. Atoms with high electronegativity have a strong attraction for the electrons they share with another atom. Therefore, the correct answer for the last question is (c) high electronegativity. Understanding chemical bonding is crucial to understanding chemical reactions and the properties of substances.

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The claim regarding the above is that a known unknown is knowledge about which someone is aware but has no possession. Many scientific investigations, search engine and database searches, business intelligence (BI), and data analytics, among other channels of inquiry, are driven by known unknowns.

Known unknowns might potentially indicate possible concerns. Time and cost predictions in project management, for example, are intrinsically imprecise due to circumstances beyond the organization's control, such as supply chain concerns.

These are known in the sense that it is accepted that certain occurrences may occur, but it is uncertain, and frequently unknowable, whether or not they will.

A known unknown in security is knowing that there are present risks to network security but no information on whether they are affecting your network specifically.

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Answer:279.1 K

Explanation:

You'll be using Gay-Lussac's Law for this. P1/T1=P2/T2

I have a class for this, and one of the practice questions was formatted this way, so I used that format and substituted said numbers as needed

P1:67 Pa

P2:60 Pa

T1:250 K

T2:?

I really hope this helps!