What is the difference between a physical and a chemical property? (please hurry)

Answer:

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

Answer:

The pH indicates how acidic or basic a solution is.

Explanation:

i just took the test and got it right.

pH of a solution is the measure of how acidic or basic the solution is. It is determined based on the H+ ion concentration in the solution. Hence, option C is correct.

pH of a solution is the measure of the H+ ion concentration in a solution. It determines the acidity or basicity of the solution. Mathematically it is the negative logarithm of H+ ions concentration.

pH = - log [H+]

A pH scale can be used to determine the acidity or basicity of a solution. If the basicity is 7, then the solution is neutral. If the pH is less than 7 then the solution is acidic and a pH above 7 is basic solution.

Red- green color in pH scale represent the acidic solution where green is neutral and cyan to dark blue color is given by bases. Using a litmus paper the acidity can be checked based on these color change.

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Answer:

66.5% (3 s.f.)

Explanation:

Please see the attached pictures for the full solution.

*Mr stands for relative formula mass

In total, there would be approximately 11,997.17 grams of glucose if there were 4.00 x 1025 molecules of glucose.

When given the molecules of a compound and are asked to determine the number of grams of the compound, one would use Avogadro's number to convert the number of molecules to moles and then use the molar mass to convert to grams.

First, let's determine the number of moles of glucose (C6H12O6) in 4.00 x 1025 molecules of glucose. We can use Avogadro's number to determine this:

1 mole of a substance = 6.022 x 1023 particles of that substance

Therefore, the number of moles of glucose in 4.00 x 1025 molecules of glucose can be calculated as follows:

moles = (4.00 x 1025 molecules)/(6.022 x 1023 molecules/mol)

= 66.5 moles of glucose

Next, we can convert the number of moles to grams using the molar mass of glucose (C6H12O6):

Molar mass of glucose (C6H12O6) = 6(12.01 g/mol) + 12(1.01 g/mol) + 6(16.00 g/mol) = 180.18 g/mol

Therefore, the mass of 66.5 moles of glucose can be calculated as follows

:mass = moles x molar mass= 66.5 mol x 180.18 g/mol= 11,997.17 g

So, if there are 4.00 x 1025 molecules of glucose, the mass of glucose would be approximately 11,997.17 grams.

Answer: In total, there would be approximately 11,997.17 grams of glucose if there were 4.00 x 1025 molecules of glucose.

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The value of 8D of water vapor in isotopic equilibrium with fresh water whose 8D value is -65%0 is -67.79125‰.

The expression for calculating 8D of water vapor in isotopic equilibrium with fresh water can be given by: 8D = α 8D (vapor) + (1 - α) 8D (liquid). Where,α is a fractionation factor and 8D (vapor) and 8D (liquid) are the deuterium enrichments in water vapor and liquid, respectively.

The value of α is given by:a (liquid-vapor) = 1.090So,α = (a (liquid-vapor) - 1) / (a (liquid-vapor) + 1)α = (1.090 - 1) / (1.090 + 1)α = 0.045So,8D = α 8D (vapor) + (1 - α) 8D (liquid)Given,8D (liquid) = -65‰ (‰ denotes permil, which is equal to parts per thousand)

Substitute the given values in the expression and simplify:8D = 0.045 × 8D (vapor) + (1 - 0.045) × (-65)8D = 0.045 × 8D (vapor) - 61.9258D + 2.79125 = 8D (vapor)

Therefore,8D (vapor) = 8D - 2.79125= -65 - 2.79125= -67.79125‰ (answer)Therefore, the value of 8D of water vapor in isotopic equilibrium with fresh water whose 8D value is -65%0 is -67.79125‰.

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a. Silver coin - Element (Silver is a pure element and is not chemically combined with any other element in a silver coin)

b. Air - Mixture (Air is a mixture of gases, primarily nitrogen and oxygen, with trace amounts of other gases and particles)

c. Coffee - Mixture (Coffee is a mixture of various compounds such as water, caffeine, and organic compounds that give it its flavour and aroma)

d. Soil - Mixture (Soil is a mixture of various substances such as minerals, organic matter, water, and air)

My everyday experiences influenced my response because I have come across these examples in my daily life and have been taught about them in science classes. For example, I know that air is composed of different gases and particles, and that soil is made up of a mixture of substances, including minerals and organic matter. Similarly, I know that a silver coin is made of pure silver and that coffee is made of various compounds.

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Answer:

Fossils also help us to infer why dinosaurs and other organisms became extinct. Fossils tell us that there was a mass extinction at the time of the dinosaurs. They died out about 65 million years ago, along with more than half of all the other animal and plant species. ... Without plants, dinosaurs could not survive.

Explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

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An aqueous solution of 0.10 mol dm-3 AlCl3 will be acidic due to the presence of hydrated Al3+ ions and the resulting formation of hydronium ions.

When an ionic compound like AlCl3 dissolves in water, it dissociates into its constituent ions according to the following reaction:

AlCl3 (s) → Al3+ (aq) + 3Cl- (aq)

The aluminum ion, Al3+, has a very high charge-to-size ratio, which makes it highly polarizing. It can distort the electron cloud of water molecules and attract them towards itself, forming a hydrated Al3+ ion:

Al3+ (aq) + 6H2O (l) → [Al(H2O)6]3+ (aq)

The resulting hydrated ion is acidic, because the Al3+ ion acts as a Lewis acid, accepting a lone pair of electrons from one of the water molecules to form a hydronium ion, H3O+:

[Al(H2O)6]3+ (aq) + H2O (l) → [Al(H2O)5OH]2+ (aq) + H3O+ (aq)

The hydronium ion is what makes the solution acidic, because it can donate a proton to a base to form water. Therefore, an aqueous solution of 0.10 mol dm-3 AlCl3 will be acidic due to the presence of hydrated Al3+ ions and the resulting formation of hydronium ions.

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The molecule that has the highest HOMO - LUMO gap is the dye with absorption maxima at 530 nm.

We know that the term HOMO stands for the highest occupied molecular orbital while the LUMO stands for the lowest unoccupied molecular orbital of the molecule that is under consideration.

The HOMO - LUMO gap shows us the extent to which it is possible to have the electrons that in a conjugated system being promoted from the HOMO to the LUMO and this is also a measure of the degree of conjugation in the molecule.

Recall that when the wavelength is longer, it implies that the frequency is higher and that the LUMO - HOMO gap is not as wide. If the reverse is the case, then implies that the HOMO - LUMO gap is quite wide as is evident from what we have in the question as shown.

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Answer:

no

Explanation:

a hydrocarbon contains only carbon and hydrogen atoms.

Answer:

C. No, a hydrocarbon contains only carbon and hydrogen atoms.

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

D. A sour liquid that forms gas bubblee when mixed with copper

According to the question the experimental value for the specific heat and the accepted value for the 100% propylene glycol solution (pure propylene glycol) is higher than the others as:

The experimental value is the value that you get in an experiment.

Error = [accepted value - experimental value]

Typically, the discrepancy is shown as a percent inaccuracy.

Experimental value 100% equals percentage error = |experimental value - accepted value. Consider, for instance, that you performed an experiment to ascertain the boiling point of water and obtained a result of 99.3 °C.

99.3 °C is your experimental value.

The ideal temperature is 100.0 °C.

|99.3 °C - 100.0 °C| = 0.7 °C is the experimental error.

The inaccuracy is represented as 99.3 °C - 100.0 °C/100.0 °C = 0.7 °C.

0.7/100.0 °C × 100 = 0.7 %

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Corona in transmission lines is phenomenon where the surrounding air surrounding the conductors of a power transmission line becomes ionized. It occurrence result in audible noise, losses and power dissipation and radio interference.

In the context of transmission lines, "corona" refers to the phenomenon where the surrounding air surrounding the conductors of a power transmission line becomes ionized. Corona occurs when the electric field strength at the surface of the conductors exceeds the breakdown strength of air, resulting in the ionization of air molecules.

Corona can occur in high-voltage transmission lines when the voltage gradient along the conductor exceeds a certain threshold. It is more likely to occur at higher voltages and in lines with sharp edges or points, such as those found on transmission towers or conductors.

When corona occurs, several effects can be observed:

1. Audible Noise: The ionized air around the conductors produces a characteristic buzzing or crackling sound. This audible noise is often referred to as corona noise and can be heard near high-voltage power lines.

2. Losses and Power Dissipation: The ionization of air in the corona discharge results in power losses. These losses occur due to the energy dissipated in the ionized air and can contribute to a reduction in the overall efficiency of the transmission system.

3. Radio Interference: Corona can generate electromagnetic waves in a wide frequency range, including radio frequencies. These electromagnetic waves can interfere with nearby communication systems, such as radio and television signals, causing disruptions or poor reception.

4. Ozone Generation: The ionization process in corona generates ozone, a form of oxygen. Ozone can have both positive and negative effects. While ozone at ground level is harmful to human health, ozone in the upper atmosphere plays a crucial role in shielding the Earth from harmful ultraviolet (UV) radiation.

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Answer:

Photolysis and hydrolysis. These are two methods that can be used to break down a compound into simpler substances and smaller units.

Explanation:

The movement of the continental plates is due to convection currents located at the Earth's mantle below the crust.

In conclusion, the movement of the continental plates is due to convection currents located at the Earth's mantle below the crust.

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When a strong base is added to Solution A, sodium fluoride and water are produced, whereas when a strong base is added to Solution B, sodium hydroxide, hydrogen fluoride, and sodium oxide are produced.

A strong base and 1.0 M hydrofluoric acid (HF) in Solution A will react to produce water and salt. The chemical formula for the reaction of HF with a powerful base, such as sodium hydroxide (NaOH), is as follows:

NaOH + HF = NaF + H₂O

When a powerful base is added to Solution A, sodium fluoride (NaF) and water will form as a result.

The chemical formula for the reaction of NaF with a powerful base, such as NaOH, is as follows:

Na₂O + HF from NaF + NaOH

Sodium hydroxide (NaOH), hydrogen fluoride (HF), and sodium oxide (Na₂O) will develop when a strong base is added to Solution B.

The chemical formula for the reaction of NaF with a powerful base, such as NaOH, is as follows:

Na₂O + HF from NaF + NaOH

Sodium hydroxide (NaOH), hydrogen fluoride (HF), and sodium oxide (Na₂O) will develop when a strong base is added to Solution B.

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Answer:

8.3 g of NaCl

Explanation:

Edge 2022

Answer:

8.3 g NaCl

Explanation:

Its right just type it in

Answer:

Investigating how carbon dioxide levels impact ocean pH

Explanation:

I hope this helps! :)

Answer:

Buffalo and Watertown.

Explanation:

This is correct as the Interior lowlands are located ib the US. These are correct as the others are in the US but aren't located anywhere near the Interior Lowlands.

Answer:

wrong.

Explanation: charged atoms have have more electrons than neural because  they charge it . a  neural atom has eaqual number of electrons and neutrons.

hope this helps(^人^)

Answer:

Nitrogen fixation is the process of converting nitrogen to a usable form.

An ionic equation is a chemical equation in which the electrolytes in aqueous solution are expressed as dissociated ions.

Given the molecular equation of the reaction of aqueous potassium sulfate, K2SO4, and aqueous strontium iodide, SrI2 as shown:

The total ionic equation is as shown below;

Next is to get the net ionic equation from the total ionic equation. Canceling out the common ions on both sides of the equation will give:

This gives the net ionic equation of the given molecular equation

An electrophile substitutes an atom that is affixed to an aromatic ring in electrophilic aromatic substitution reactions, which are organic processes. Typically, in these reactions, an electrophile takes the place of a hydrogen atom from a benzene ring.

Most beginning organic chemistry courses cover six fundamental electrophilic aromatic substitution reactions: chlorination, bromination, nitration, sulfonation, Friedel-Crafts alkylation, and Friedel-Crafts acylation.

Thus, electron density rises in the ortho and para positions of the aromatic ring as a result of the hydroxyl group in phenol acting as an electron donor. Therefore, electrophilic substitution of phenol occurs more readily than that of benzene.

The proton is removed from the benzene ring in the second stage of the aromatic electrophilic substitution process of a benzene ring after the electrophile hits the ring in the first step and forms an intermediate.

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Cost per mole

Table salt : Rs 0.878

Table sugar : Rs 23.63

Given

Cost table salt (NaCl) = 15/kg

Cost table sugar(sucrose-C12H22O11) = 69/kg

Required

cost per mole

Solution

mol of 1 kg Table salt(NaCl ,MW= 58.5 g/mol) :

\(\tt mol=\dfrac{1000~g}{58.5}=17.09~mol=Rs~15\rightarrow 1~mol=Rs~0.878\)

mol of 1 kg Table sugar(C12H22O11 ,MW= 342 g/mol) :

\(\tt mol=\dfrac{1000}{342}=2.92~mol=Rs~69\rightarrow 1~mol=Rs~23.63\)

The standard emf of the  voltaic cell based on Ag+(aq)/Ag(s) and Fe3+(aq)/Fe2+(aq) half-cells is 0.03 V.

To determine the reactions at the cathode and anode, we need to know the standard reduction potentials of the given half-cells. The standard reduction potentials are as follows:

Ag+(aq) + e- → Ag(s) E° = +0.80 V
Fe3+(aq) + e- → Fe2+(aq) E° = +0.77 V
Since the higher reduction potential will occur at the cathode and the lower one at the anode, we have:
Cathode reaction: Ag+(aq) + e- → Ag(s)
Anode reaction: Fe3+(aq) + e- → Fe2+(aq)
The cathode reaction involves the reduction of silver ions to silver metal, and the anode reaction involves the reduction of ferric ions to ferrous ions. And the standard emf of the cell is:

E°cell = E°cathode - E°anode

E°cell = +0.80 V - (+0.77 V)

E°cell = 0.03 V

In this voltaic cell, the cathode reaction is Ag+(aq) + e- → Ag(s), and the anode reaction is Fe3+(aq) + e- → Fe2+(aq). The standard emf of the cell is 0.03V.

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A voltaic cell is based on Ag+(aq)/Ag(s) and Fe3+(aq)/Fe2+(aq) half-cells. The cathode reaction is \(Ag^+(aq) + e^{-}\ - > Ag(s)\) and the anode reaction is \(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\).

Determine the cathode and anode reactions

To determine the cathode and anode reactions in the voltaic cell based on the \(Ag^+(aq)/Ag(s)\ and\ Fe^{3+}(aq)/Fe^{2+}(aq)\) half-cells, we need to compare the reduction potentials of each half-reaction. The reaction with the higher reduction potential will occur at the cathode (where reduction takes place), while the reaction with the lower reduction potential will occur at the anode (where oxidation takes place).

The standard reduction potentials for the half-reactions are as follows:

\(Ag^+(aq) + e^{-}\ - > Ag(s) \ \ \ \ \ \ \ \ E\° = +0.80 V\)

\(Fe^{3+}(aq) + e^{-} \ - > Fe^{2+}(aq) \ \ \ \ \ \ \ \ E\° = +0.77 V\)

Since the standard reduction potential for \(Ag^+(aq)/Ag(s)\) is higher than that of \(Fe^{3+}(aq)/Fe^{2+}(aq)\), the \(Ag^+(aq)/Ag(s)\) half-reaction will occur at the cathode (reduction) and the \(Fe^{3+}(aq)/Fe^{2+}(aq)\) half-reaction will occur at the anode (oxidation).

A.) Cathode reaction:

\(Ag^+(aq) + e^{-}\ - > Ag(s)\)

B.) Anode reaction:

\(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\)

It's important to note that the oxidation half-reaction is typically written in the reverse direction (as an oxidation) to emphasize the loss of electrons.

Therefore, the cathode reaction is \(Ag^+(aq) + e^{-}\ - > Ag(s)\) and the anode reaction is \(Fe^{3+}(aq)\ - > Fe^{2+}(aq) + e^{-}\).

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Answer:

it have been already balanced

2H2 + O2 = 2H2O.

Answer:

sure what is it . math or anything