Which are steps of mitosis? Select 4 options.
prophase
metaphase
interphase
anaphase
telophase

Answer:

CUCO3_ CuO + CO2

Explanation:

exchange reaction occur when two soluble salts are mixed and immediately form an insoluble salt

This refers to the material that is made when different substances mix up physically and causes a reaction.

You can make on the project of Mixture -

This refers to the chemical bond that holds different atoms tightly

You can make on the project of Compound -

Based on the fact that the atom is the smallest indivisible part of an element, elements like phosphorous cannot be further broken down.

You can make on the project of Elements -

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A redox reaction is a chemical reaction in which one or more of the reacting species undergoes oxidation and one or more undergoes reduction. An oxidizing agent is an element or compound that oxidizes another substance, while a reducing agent is an element or compound that reduces another substance.

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a. Molten KCl: The products formed are elemental potassium (K) at the cathode and chlorine gas (\(Cl_2\)) at the anode.

b. Aqueous KCl: The products formed are hydrogen gas (\(H_2\)) or potassium (K) at the cathode, chlorine gas (\(Cl_2\)) at the anode, and potassium hydroxide (KOH) if water is present in the solution.

a. When molten KCl (potassium chloride) is electrolyzed with inert electrodes, the products formed are potassium (K) metal and chlorine (Cl₂) gas. The overall reaction can be represented as:

2KCl (l) -> 2K (l) + Cl₂ (g)

In this case, the electrolysis of molten KCl results in the decomposition of the compound into its elements, with potassium being reduced at the cathode (negative electrode) and chlorine being oxidized at the anode (positive electrode).

b. When aqueous KCl (potassium chloride) is electrolyzed with inert electrodes, the products formed are hydrogen (H₂) gas and chlorine (Cl₂) gas. The overall reaction can be represented as:

2H₂O (l) -> 2H₂ (g) + O₂ (g)

However, since the electrolyte is KCl, the presence of chloride ions (Cl⁻) allows for another reaction to occur:

2Cl⁻ (aq) -> Cl₂ (g) + 2e⁻

Hence, the resulting products are hydrogen gas evolving at the cathode and chlorine gas evolving at the anode. The reduction of hydrogen ions (H⁺) to form hydrogen gas is preferred over the reduction of potassium ions (K⁺), while the oxidation of chloride ions (Cl⁻) to form chlorine gas occurs at the anode.

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solution of potassium chlorate,

K

C

I

O

3

, has 20 grams of the salt dissolved in 100 grams of water at 70 C. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?

Answer:

mass matter

Explanation:

The appropriate explanation for the non-metal is that the higher effective nuclear charge less will be the atomic radius.

Atomic radius typically decreases during a period from left to right. There are a few little outliers, such how the oxygen radius is a tiny bit bigger than the nitrogen radius. Protons are gradually added to the nucleus at the same time that electrons are gradually added to the main energy level. The enhanced positive charge of the nucleus gradually attracts these electrons closer to it. The size of the atoms shrinks as the strength of attraction between nuclei and electrons grows. Due to electron-electron repulsions that would otherwise result in the atom's size expanding, the effect becomes less pronounced as one proceeds further to the right in a period.

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The ions responsible for conductivity are H+ and OH-, respectively. A transition from a strong to a weak conductor occurs at 1.0M of acetic acid.

Let's start by discussing the conductivity of hydrochloric acid series concentration.

Hydrochloric acid, a strong acid, ionizes completely in water to generate hydrogen ions (H+) and chloride ions (Cl-). Hydrochloric acid is a strong conductor of electricity due to its high ion concentration.

Sodium hydroxide is a strong alkali that completely ionizes in water to form hydroxide ions (OH-). Sodium hydroxide is a strong conductor of electricity due to its high ion concentration.

Acetic acid is a weak acid, which means it does not ionize completely in water. Its ion concentration is reduced as its concentration is decreased, and as a result, it becomes a weaker conductor of electricity. This is because it has fewer ions as its concentration decreases.

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Answer:

Reacts with salt to from an acid

Answer:

50%

Explanation:

Expected measurement required = 10g

Actual measurement observed = 15g

The percentage error is given as proportion the difference between the actual and expected measurement or values and the expected value value expressed as a percentage.

[(Actual - Expected) / Expected] × 100%

[(15 - 10) / 10)] × 100%

(5 / 10) × 100%

0.5 × 100%

50%

Therefore, the percentage error in the measurement is 50%

Answer:

c

Explanation:

The presence of soil slows down the weathering of the underlying bedrock. Hence, option C is correct.

Weathering is the breaking down or dissolving of rocks and minerals on Earth's surface.

Heat and heavy rainfall increase the rate of chemical weathering.

Hence, the presence of soil slows down weathering of the underlying bedrock.

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The diagrams known as Lewis structures, often referred to as Lewis dot formulas, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.



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To find the concentration of sulfide ion when hydroxide ion begins to precipitate, we need to determine the point at which the reaction between sodium sulfide and iron(III) nitrate produces a precipitate.

This reaction can be represented by the following balanced equation: Na2S(aq) + Fe(NO3)3(aq) → FeS(s) + 2NaNO3(aq) First, let's write the balanced equation for the reaction between potassium hydroxide and iron(III) nitrate:

3KOH(aq) + Fe(NO3)3(aq) → Fe(OH)3(s) + 3KNO3(aq)

From the balanced equation, we can see that for every 3 moles of potassium hydroxide (KOH), we get 1 mole of Fe(OH)3(s) precipitate.

Therefore, when hydroxide ion begins to precipitate, the concentration of sulfide ion will be equal to the concentration of potassium hydroxide. Given that the concentration of sodium sulfide is 1.27×10^(-2) M and the concentration of potassium hydroxide is 1.35×10^(-2) M, the concentration of sulfide ion [S^2-] at the point of precipitation is also 1.35×10^(-2) M. Therefore, the concentration of sulfide ion when hydroxide ion begins to precipitate is 1.35×10^(-2) M.

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The chemical symbols for three different atomic cations that all have 19 protons : [Ca+] and [Sc2+] and [Ti3+]

Calcium:

Calcium have 20 electrons or it have 20 atomic number. Since an atom is a neutral species.

[Ca] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s2)

After losing one electron atom gain positive charge and is become

[Ca+] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s1)

Scandium:

Scandium have 21 electrons or it have 21 atomic number. Since an atom is a neutral species.

[Sc] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s2) (3d1)

After losing two electron atom gain positive charge and is become

[Sc2+] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s1)

Titanium:

Titanium have 22 electrons or it have 22 atomic number. Since an atom is a neutral species.

[Ti] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s2) (3d2)

After losing three electron atom gain positive charge and is become

[Ti3+] = (1s2) (2s2) (2p6) (3s2) (3p6) (4s1)

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2.499 mol HCl

hope this helps

Answer:

alleles

Explanation:

Answer:

send e

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to

in

box

To produce 35.5g of H2, approximately 2055.49g of NaCl is required.

To calculate the mass of NaCl required to produce 35.5g of H2, we need to determine the stoichiometry of the reaction and use the molar mass of NaCl.

The balanced equation for the reaction is:

2NaCl + 2H2O -> 2NaOH + H2

From the balanced equation, we can see that for every 2 moles of NaCl, 1 mole of H2 is produced. We can use the molar mass of H2 (2.016g/mol) to convert the given mass of H2 into moles:

moles of H2 = mass of H2 / molar mass of H2

moles of H2 = 35.5g / 2.016g/mol

moles of H2 = 17.6 mol

Since the stoichiometry of the reaction is 2 moles of NaCl to 1 mole of H2, we can set up the following ratio:

moles of NaCl / moles of H2 = 2 / 1

Rearranging the equation to solve for moles of NaCl:

moles of NaCl = (moles of H2 * 2) / 1

moles of NaCl = (17.6 mol * 2) / 1

moles of NaCl = 35.2 mol

Now, we can calculate the mass of NaCl required using the molar mass of NaCl (58.44g/mol):

mass of NaCl = moles of NaCl * molar mass of NaCl

mass of NaCl = 35.2 mol * 58.44g/mol

mass of NaCl = 2055.49g

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Answer:

86.96

Explanation:

The quantity of carbon present in moles is 3.36 x 10^23 moles.

The compound analyzed contains 0.1935 g of carbon, 0.0325 g of hydrogen, and 0.2043 g of fluorine.

The molar mass of the compound is 240.23 g/mol.

1. First, calculate the molecular mass of the compound by multiplying the mass of each element by its molar mass.

2. Divide the mass of carbon by the molecular mass of the compound.

3. Multiply the result by Avogadro's number (6.022 x 10^23).

Molecular mass = 0.1935 g x 12.011 g/mol (Carbon) + 0.0325 g x 1.008 g/mol (Hydrogen) + 0.2043 g x 18.998 g/mol (Fluorine) = 240.23 g/mol.

Moles of Carbon = 0.1935 g / 240.23 g/mol x 6.022 x 10^23 = 3.36 x 10^23 moles.

Therefore, the quantity of carbon present in moles is 3.36 x 10^23 moles.

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Answer:

c

Explanation:

I believe its c but i could be wrong sorry if I am

In the beta oxidation pathway, which of these is produced when ATP is consumed is CH₃(CH₂)n-₄COCH₂CO-COA

Option A is correct .

Each round of mitochondrial beta-oxidation produces one acetyl CoA molecule, one FAD(2H) molecule, one NADH molecule, and four ATP equivalents. Specific enzymes are required for the metabolism of fatty acids during beta oxidation.

Due to their higher H+ concentration, saturated fats do indeed contain more gross energy. Nonetheless, unsaturated fats are more edible and have higher ingestion rate, and in this manner the metabolizable energy that unsaturated fats give is higher than that given by soaked fats.

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Answer:

C. Atoms have isotopes of an element have different numbers of protons.

Explanation:

The isotopes are the variation in the number of neutrons (neutral charge), with increases the weight of the atom, so the first one, is related to this one.

Answer:

C. three substances i believe

Explanation:

lmk if im wrong (im sorry if i am!!) But its because the first pic, its a solid substance, 2nd pic is a liquid substance and 3rd pic is condensation or like gas.

The only force that can act on an object in free fall is gravity. Therefore, option A is correct.

The force that pulls items toward the center of a planet or other entity is called gravity. All the planets are kept in orbit around the sun by gravity.

The force of gravity, often known as gravitation, affects every material object in the universe. The force of gravity tends to draw any two objects or particles with nonzero mass toward one another. All sizes of objects are impacted by gravity.

It is a characteristic of things, of matter. All matter is drawn to all other matter, to put it simply. The stronger the attraction between objects, the more matter there is, and the closer together the items are. Gravity constantly draws objects together, unlike electricity and magnetism, which can either attract or repel.

Thus, option A is correct.

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We can now calculate the energy in Joules contained in a single photon of green signal with a wavelength of 535 nm. E=hv=h⋅cλ.

The wavelength, which will also apply to troughs, is the separation between two wave crests. The frequency is expressed as cycles a second (Hz), which is the quantity of vibrations that cross a specific area inside a second (Hertz).

A waveforms signals that is carried in space via down a wire has a wavelength, which is the separation between two identical places (adjacent crests) inside the consecutive cycles. This length is typically defined in wireless communication systems in metres (m), centimetres (cm), and millimetres (mm) (mm).

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Answer:

The inner planets are also called terrestrial planets.

Explanation:

Make ammonia : 4,2

Separate water : 2,3

Combust methane : 3,3

Maybe the full questions can be seen in the attached picture

Reaction 1 : Make Ammonia

N₂+3H₂⇒2NH₃

molecules left : 1+3=4

molecules right :2

Reaction 2 : Separate Water

2H₂O⇒2H₂+O₂

molecules left : 2

molecules right :2+1=3

Reaction 3 : Combust Methane

CH₄+2O₂⇒CO₂+2H₂O

molecules left : 1+2=3

molecules right :1+2=3