Identify the spectator ions in the following equation. KBr(aq) + AgNO3(aq) → AgBr(s) + KNO3(aq) a. K+ and NO3-, b. K+ and Br- c. Ag+ and NO3-, d. Ag+ and Br- e. There are no spectator ions in this reaction.

Answer:

1 respuesta. fórmula empírica = CH2

Explanation:

Translatation: 1 Answer. empirical formula = CH2

Precipitates are insoluble ionic solid products of a reaction, formed when certain cations and anions combine in an aqueous solution. The determining factors of the formation of a precipitate can vary.

Infrared and microwaves are two sorts of electromagnetic radiation that are commonly utilized for communication purposes.

One case of the utilize of infrared radiation for communication is in inaccessible controls for electronic gadgets. Infrared signals are utilized to transmit commands from the farther control to the gadget, such as changing the channel on a tv or altering the volume on a sound framework.

One case of the utilize of microwaves for communication is in cellular phone systems. Microwaves are utilized to transmit data between cell phone towers and versatile gadgets. The recurrence of the microwaves utilized in cell phone systems is regularly within the run of 800 MHz to 2.5 GHz.

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The diameter of a hydrogen atom is about 100 word meter. Length of a line of atoms in scientific notation is 1 × 10^-10.

Suppose hydrogen atoms were arranged side by side in a straight line. We need to multiply these numbers to find the length of this line of atoms. We will calculate the length of this line of atoms by using the formula:

Length of a line of atoms = Number of atoms × Diameter of an atom

Here,Number of atoms = Length of a line of atoms / Diameter of an atom

The diameter of a hydrogen atom is about 10^-10 meter.

Length of a line of atoms = Number of atoms × Diameter of an atom

We know that Number of atoms = Length of a line of atoms / Diameter of an atom

Therefore, Length of a line of atoms = Number of atoms × Diameter of an atom

Length of a line of atoms = (1 × 10^0) × (1 × 10^-10)

Length of a line of atoms = 1 × 10^-10

Length of a line of atoms in scientific notation is 1 × 10^-10.

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Answer:

i think it is A

Explanation:

i got this answer from a good friend

The magma deep below Earth's surface cool slowly.Large crystals form results from magma cooling deep below Earth's surface. Therefore, option A is correct.

Magma is the molten or semi-molten natural material that gives rise to all igneous rocks. Magma can be found beneath the Earth's surface, and evidence of magmatism has been discovered on other terrestrial planets and natural satellites.

When magma slowly cools deep within the crust, the resulting rock is known as intrusive or plutonic. Because of the slow cooling, crystals can grow large, giving intrusive igneous rock a coarse-grained or phaneritic texture. Individual crystals in phaneritic texture can be seen with the eye.

Intrusive igneous rocks form when magma slowly cools and solidifies beneath the Earth's surface. Large, well-formed crystals are found in intrusive igneous rocks such as granite, gabbro, diorite, and dunite.

Thus, option A is correct.

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Formic acid (ch2o2)  on reaction with water undergoes dissociation reaction.

Formic acid  is the acid released by ant when it bites which causes us irritation.

It's formula is CH2O2 or HCOOH. and pH is 3.75.

In the case of dehydration, one hydrogen atom in the water molecule joins the hydroxyl group in the trans formic acid to form a new water molecule, while the hydrogen bonded to carbon in the acid breaks off to regenerate a water molecule.

Formic acid dissociates in water according to the equation:

HCOOH (aq) + H2O (l) = H3O + (aq) + HCOO- (aq)

Formic acid is the simplest carboxylic acid, containing a single carbon. Occurs naturally in various sources including the venom of bee and ant stings, and is a useful organic synthetic reagent. Principally used as a preservative and antibacterial agent in livestock feed.

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The amount of ionization produced in the air when ionizing radiation is present is known as ionization.

Ionization is the process by which an atom or molecule loses or gains an electron, resulting in a charged particle known as an ion.

Ionization can occur due to various physical and chemical processes, such as exposure to high-energy radiation or contact with an electrically charged object.

In the given question, the amount of ionization produced in the air when ionizing radiation is present is known as ionization.

Therefore, the answer is ionization.

The amount of ionization produced in the air when ionizing radiation is present can be measured using units such as the Roentgen (R) or Gray (Gy).

Radiation can have both positive and negative effects on living organisms.

Ionizing radiation is particularly harmful as it can cause damage to DNA and other cellular components, leading to mutations, cancer, and other diseases.

It is important to take appropriate safety measures when working with ionizing radiation to minimize exposure and potential harm.

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Answer:

The answer is 10

Explanation:

Answer:

The awser is D.

TLC means Thin Layer Chromatography. It is a method that can best be described as "Affinity-Based" used in the separation of compounds that are in a mixture.

Unreacted p-nitrobenzaldehyde is simply an organic aromatic compound that contains a nitro group para-substituted to an aldehyde. in this case, if it is unreacted, that means it is the same as before the chemical reation.

Note that the question is missing key information hence the general answer.

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Answer:

Molecules are neutral particles made of two or more atoms bonded together.

Atoms are single neutral particles.

The approximate partial pressure of chlorine atoms ([Cl]) is 0.908 atm.

To determine the partial pressure of chlorine atoms (Cl) at equilibrium, we can use the equilibrium constant (Kc) and the known partial pressure of chlorine molecules (Cl₂).

The balanced equation for the dissociation of chlorine molecules isat high temperature is given by

Cl₂(g) ⇌ 2 Cl(g)

The equilibrium constant expression for this reaction is:

Kc = [Cl]² / [Cl₂]

Given that Kc = 0.55 and the partial pressure of chlorine molecules ([Cl₂]) is 1.5 atm, we can set up the following equation:

0.55 = ([Cl]^2) / (1.5)

To solve for [Cl], we can rearrange the equation:

[Cl]₂ = 0.55 × 1.5

[Cl]₂ = 0.825

[Cl] ≈ √0.825

[Cl] ≈ 0.908

Therefore, the approximate partial pressure of chlorine atoms ([Cl]) is 0.908 atm

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Answer:

B³+

Explanation:

In the compound, boron shows an oxidation state of +3. The first three ionization energies of boron, however, are much too high to allow formation of compounds containing the B³+ ion

Answer: 57 neutrons

Explanation: Ruthenium has an atomic number of 44, meaning it has 44 electrons, 44 protons, and 57 neutrons.

Answer:

57 neutrons

Explanation:

Ruthenium has atomic number of 44, that is, it contains 44 electrons distributed in atomic orbitals and its nucleus has 44 protons and 57 neutrons (Figure 1). Electron distribution in atomic or molecular orbitals is called electron configuration which for Ru and the other group 8 chemical elements is shown in Table 1.

Assuming the quantity of current passing through the zinc and copper electrolytes is the same, mass of Zinc deposited is (x/64) × 65.0 g.

Electrolysis is the decomposition of a substance known as an electrolyte when electric current is passed through its solution or molten form.

The mass of an electrolyte deposited when current is passed is dependent on the current and the charge on the ion.

In the electrolysis of copper and zinc, assuming the quantity of current passed through their solution are the same, the moles of each zinc and copper deposited will be the same since the charges on their ions are the same.

Assuming x g of copper is deposited.

molar mass of copper = 64.0 g

molar mass of Zinc = 65.0 g

moles of copper deposited = x/64

moles of zinc deposited = x/64

mass of Zinc deposited = (x/64) × 65.0 g

Therefore, the mass of Zinc deposited is (x/64) × 65.0 g.

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The net ionic equation for the reaction is:

A net ionic equation is an ionic equation in which the spectator ions in the reaction are removed.

Spectator ions appear on both side of the reaction, and are thus not indicated in a net ionic equation.

The net ionic equation for the reaction that occurs when aqueous solutions of perchloric acid and ammonia are combined is as follows:

NH₃(aq) + H₃O⁺ (aq) -------> NH₄⁺ (aq) + H₂O

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When compared to the initial nuclide, the alpha decay product: The answer is B. The atomic number of the product is two less than the atomic number of the original nuclide.

What is Alpha Decay?

A nuclear process known as "alpha decay" causes the parent nucleus to emit an alpha particle. The alpha particle is made up of two neutrons and two protons. There is a radioactive decay process known as "alpha decay" in which an atomic nucleus produces an alpha particle and radioactively decays into a separate atomic nucleus with a mass number reduced by four and an atomic number reduced by two.

Alpha decay reduces atomic mass by 4 and atomic number by 2.

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To oxidize 10 g of cyclohexanol, 200 mL of 5.0% w/v bleach (NaOCl) is needed.

Before calculating the volume of bleach, we need to find:

\(Mass of cyclohexanol = 10 g\\Concentration of bleach (NaOCl) = 5.0\% w/v\\Convert the mass of cyclohexanol to moles.\\Molar mass of cyclohexanol (C6H12O) = 100.16 g/mol\\Moles of cyclohexanol = mass / molar mass\\Moles of cyclohexanol = 10 g / 100.16 g/mol\)

Determine the stoichiometry between cyclohexanol and bleach.

From the balanced equation for the oxidation of cyclohexanol, we know that:

1 mole of cyclohexanol reacts with 1 mole of bleach (NaOCl)

Calculate the moles of bleach required.

\(Moles\ of\ bleach\ (NaOCl) = moles\ of\ cyclohexanol\)

Calculate the volume of bleach using its concentration.

\(Volume\ (in\ mL) of\ bleach = (moles\ of\ bleach / concentration\ of\ bleach) * 1000\\Volume (in mL) of bleach = (moles of bleach / 0.05) * 1000\\Substituting the value of moles of bleach\\Volume (in mL) of bleach = (moles of cyclohexanol / 0.05) * 1000\\Substituting the value of moles of cyclohexanol\\Volume (in mL) of bleach = (10 g / 100.16 g/mol) / 0.05 * 1000\)

Simplifying:

\(Volume\ (in\ mL)\ of\ bleach = 199.64\ mL\)

Therefore, to oxidize 10 g of cyclohexanol, you would need approximately 200 mL of 5.0% w/v bleach (NaOCl).

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Answer:

If the reactants in the chemical reactions are known, then the products can be predicted because the pattern of the chemical reactions is being followed. The pattern for a single replacement is A + BC --> AC + B. This is like the Hear It Pop Chemical Reaction which is also an example of the single replacement.

Explanation:

Answer:

AlAsO4

Explanation:

Aluminium arsenate is an inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced by the reaction between sodium arsenate and a soluble aluminium salt.

Answer:

2n² is a formula that determines that the maximum number of electrons should be accommodated in a particular shell.

Explanation:

Heat required = 173 kJ

Given

56.0 g of ice

Temperatur at 263 K(-10 C) to 400 K(127 C)

Required

Heat needed

Solution

1. raise the temperature(-10 C to 0 C)⇒c ice=2.09 J/g C

\(\tt Q=56\times 2.09\times (0-(-10)=1170.4~J\)

2. phase change (ice to water)⇒Heat of fusion water=334 J/g

\(\tt Q=56\times 334=18704~J\)

3. raise the temperature(0 C to 100 C)⇒c water= 4.18 J/g C

\(\tt Q=56\times 4.18\times (100-0)=23408~J\)

4. phase change(water to vapor)⇒heat of vaporization water=2260 J/g

\(\tt Q=56\times 2260=126560~J\)

5. raise the temperature(100 C to 127 C)⇒c vapor=2.09 J/g C

\(\tt Q=56\times 2.09\times (127-100)=3160.08~J\)

Total heat :

1170.4+18704+23408+126560+3160.08=173,002.48 J=173 kJ

The substance tested is likely marijuana or related cannabis compounds if the Duquenois-Levine test turns purple.

In the event that the Duquenois-Levine arrangement becomes purple when added to an example, it recommends the presence of maryjane or other marijuana related substances.

The Duquenois-Levine test is a colorimetric test used to recognize the presence of weed in an example. It includes blending the example in with a progression of reagents, including Duquenois reagent and chloroform. Assuming the subsequent chloroform layer becomes purple, it proposes the presence of cannabinoids, which are the dynamic mixtures tracked down in cannabis.

It is essential to take note of that the Duquenois-Levine test isn't conclusive and can't be utilized to affirm the presence of maryjane all alone. All things considered, it is in many cases utilized as a fundamental screening test and might be circled back to other corroborative tests to give a more exact distinguishing proof.

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Answer: It will give up electrons, forming a positive ion.

During bonding, strontium atom will give up electrons, forming a positive ion.

STRONTIUM:

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Answer: 30mL

Explanation:

A 20-milliliter sample of a gas is at 546 K and has a pressure of 6.0 atmospheres. If the temperature is changed to 273 K and the pressure to 2.0 atmospheres, the new volume of the gas is 30mL.

Because gases occupy their containers, overall volume is identical to the container's internal volume. Liquids are typically measured using containers in which the volume or internal form of the container is indicated.

The volume of typical solid forms may be calculated using formulae. Another way to calculate the capacity of a solid would be to calculate how so much liquid something displaces.

P₁×V₁/T₁=P₂×V₂/T₂

substituting all the given values in the above equation, we get

6.0×20/ 546=2.0×V₂/ 273

V₂= 30mL

Therefore, 30mL is the final volume.

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385 L is the volume of the air mattress with 0.55 moles of air inside the mattress and a temperature of 295 K.

The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Using the gas law,

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 3.5 kPa

V=?

n= 0.55 moles of air

T= 295K

R= 8.314 (L kPa/mol K)

Putting value in the given equation:

V= \(\frac{nRT}{P}\)  

V = \(\frac{(0.55 moles)(8.314 L kPa/mol k)(295 K)}{3.5 kPa}\)

V = 385.4132857 L

And whatever the significant figure is asked for, for example, 3 significant figures: the answer would be 385 litres.

Hence, 385.4132857 L is the volume of the air mattress.

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Answer:

There are various types of proteins with a number of different functions they perform. These functions can include:

Hope this helps!

Answer:

provide structure

transport substances

fight diseases

regulate cell processes

send messages

create movement

Explanation:

'cause i did it edge 2020