Writing scientific arguments
light waves amplify​

Answer:

A. Forming a positive ion!

Hope this helped :)

For the first reaction: - \(C_2H_5NH_2\) is a reactant and acts as a Bransted-Lowry base since it accepts a proton from\(HNO_2\).

For the second reaction:- \(CH_3CN\) is a reactant and acts as a Lewis base since it donates electron pairs to \(Zn^2^+\).
For the third reaction:  - \(H_2O\) is a reactant and acts as a Lewis base since it donates electron pairs to \(Al^3^+\).

For the first reaction: \(HNO_2(aq) + C_2H_5NH_2(aq) → NO_2-(aq) + C_2H_5NH_3+(aq)\)
- \(HNO_2\)  is a reactant and acts as a Bransted-Lowry acid since it donates a proton to \(C_2H_5NH_2\).
- \(C_2H_5NH_2\) is a reactant and acts as a Bransted-Lowry base since it accepts a proton from \(HNO_2\).

For the second reaction: Zn2+(aq) + 6CH3CN(aq) → Zn(CH3CN)2+(aq)
- Zn2+ is a reactant and acts as a Lewis acid since it accepts electron pairs from CH3CN.
- CH3CN is a reactant and acts as a Lewis base since it donates electron pairs to Zn2+.

For the third reaction: Al3+(aq) + 6H2O(l) → Al(H2O)63+(aq)
- Al3+ is a reactant and acts as a Lewis acid since it accepts electron pairs from H2O.
- H2O is a reactant and acts as a Lewis base since it donates electron pairs to Al3+.

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Answer: C. Increase the concentration of Mg in the reaction mixture.

Explanation: I got this right on Edmentum.

Explanation:

The two half equations are;

3e + HNO3 → NO

S→ H2SO4 + 6e

When balancing half equations, we have to make sure the number of electrons gained is equal to the number of electrons lost.

Which factor will you use for the top equation?

We multiply by 2 to make the number of electrons =  6e

Which factor will you use for the bottom equation?

We multiply by 1 to make the number of electrons = 6e

Answer:

2

1

Explanation:

The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

The correct answer to the first part of your question is option (c): Energy is released by water vapor as it condenses.

When water vapor condenses into liquid water, it undergoes a phase change from a gaseous state to a liquid state. During this phase change, energy is released in the form of latent heat. This release of energy occurs because the water molecules in the vapor phase are more energetic and have higher kinetic energy compared to the water molecules in the liquid phase.

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At the threshold value of a neuron, voltage-gated sodium (Na+) channels open. The threshold value of a neuron is the critical level of depolarization that must be reached in order for an action potential to be generated. When this threshold value is reached, it causes voltage-gated sodium (Na+) channels in the neuron's membrane to open.

This allows sodium ions to flow into the neuron, causing further depolarization and leading to the generation of an action potential.Voltage-gated potassium (K+) channels also play a role in the generation of action potentials. However, these channels do not open at the threshold value of a neuron.

Instead, they open later in the action potential, allowing potassium ions to flow out of the neuron and repolarize the membrane. Chemically-gated sodium (Na+) channels are also involved in the generation of action potentials, but these channels are not voltage-gated and are not involved in the threshold value of a neuron.

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Answer:

g

Explanation:

Answer:

Freezing point of water will decrease to -18.02°C

Explanation:

We start from the formula for freezing point depression, one of the colligative properties.

ΔT = Kf . m . i

ΔT = Freezing T° of pure solvent - Freezing T° of solution

m = molality

Kf = Cyoscopic constant (specific for each solvent)

i = numbers of ions dissolved (Van't Hoff factor)

CaCl₂ →  Ca²⁺  + 2Cl⁻    i = 3

We replace each data:

0°C - T° F) = 1.86°C/m . 3.23 m . 3

T°F = - 18.02°C

The order of decreasing boiling point for these compounds is KCl > CH2O > CO2.

This is because KCl has ionic bonds, which are stronger than the covalent bonds found in CH2O and CO2. Stronger bonds require more energy to break, thus requiring a higher boiling point. Additionally, CH2O has dipole-dipole interactions which add to its boiling point, while CO2 has only weak London dispersion forces.

To rank the following compounds in order of decreasing boiling point: KCl, CO2, and CH2O, you need to consider the types of intermolecular forces present in each compound.

1. Identify the intermolecular forces present in each compound:
  - KCl: Ionic bonding (between metal and non-metal)
  - CO2: London dispersion forces (non-polar molecule)
  - CH2O (formaldehyde): Dipole-dipole forces and London dispersion forces (polar molecule)

2. Compare the strengths of these intermolecular forces:
  - Ionic bonding > Dipole-dipole forces > London dispersion forces

3. Rank the compounds based on the strengths of their intermolecular forces:
  - KCl (Ionic bonding) > CH2O (Dipole-dipole forces) > CO2 (London dispersion forces)

So, the order of decreasing boiling point is: KCl > CH2O > CO2.

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Answer:

1. Hidracidas a. MX

2 Acidas c. MHXO

3. Oxacidas  b. MXO

4. Basicas d. M(OH)X

Explanation:

¡Hola!

En este caso, de acuerdo con el concepto de sal, la cual está generalmente dada por la presencia de al menos un metal y un no metal, es posible encontrar cuatro tipos de estas; hidrácidas, oxácidas, básicas y ácidas, en las que las primeras dos son neutras pero la segunda tiene presencia de oxígeno, la tercera tiene iones hidróxido adicionales y la cuarta iones hidrógeno de más.

Debido a la anterior, es posible relacionar cada pareja de la siguiente manera:

1. Hidracidas a. MX

2 Acidas c. MHXO

3. Oxacidas  b. MXO

4. Basicas d. M(OH)XO

En las que M se refiere a un metal, X a un no metal, H a hidrógeno y O a oxígeno.

¡Saludos!

The equilibrium law for the nuclide is 0.386 days per one, according to the announcement.

Any form of atoms with a measured lifetime is referred to as a nuclide. Atomic nuclei, also known as nuclides (nuclei of various isotopes), are kept together by the weak nuclear interaction and are made up of Z protons and N nuclei with just a mass of A (mass number=Z+N). The amount of protons increases as the electron configuration does, and protons are given to the nucleus to maintain stability.

t = 2.303 * 1/λ log (A₀/At)

λ = 2.303/t log (A₀/At)

= 2.303/3.40 log (45/12.1)

= 0.677*0.57

= 0.386 day⁻¹

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Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electrons.

Explanation:

Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electron

The pH of 1 X 10-2 M HCN acid is 5.7

D) between 4 and 7

HCN is weak acid dissociate as

HCN  + H2O   \rightleftharpoons  H3O+  +  CN-

Ka = [CN- ][H3O+] / [HCN]

but  [CN- ] = [H3O+] = x

Ka = [x][x] / [HCN]

Substitute the value in equation

4.0X 10-10 = [x]2/ 1 X 10-2

[x]2 = 4.0X 10-10 X1 X 10-2  = 4.0 X 10-12

[x] = 2.0 X 10-6 M

Concentration of H3O+ = 2 X 10-6 M

pH = - log[H3O+]

pH = - log (2 X 10-6)

pH = 5.7

Prussic acid, also known as hydrogen cyanide, is a chemical substance with the formula HCN and the structural formula HCN. It is a colourless, incredibly poisonous, and flammable liquid that boils at 25.6 °C (78.1 °F), just slightly above room temperature.

Industrial-scale HCN production makes it a highly prized precursor to a wide range of chemical compounds, from pharmaceuticals to polymers. Production of potassium cyanide and adiponitrile, which are used in mining and plastics, respectively, has large-scale applications. Due to its volatile nature, it is more toxic than cyanide compounds that are solid.

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CaF₂ is the salt that is more soluble in acid than in neutral water.

When CaF₂  is dissolved in water, it undergoes hydrolysis to produce a small amount of HF, which can react with H+ ions in an acidic solution to form the soluble HF₂- ion. Therefore, in an acidic solution, the concentration of HF₂- is higher, which increases the solubility of CaF₂ .

The other salts mentioned, CaBr₂, Ca(ClO₄)₂, CaI , and CaCl₂, do not undergo hydrolysis and do not form soluble species in acidic solutions. Therefore, their solubility is not affected by the acidity of the solution.

So, the correct answer is CaF₂.

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Answer:

The number of outer shell electrons determines the group number of the element. The number of occupied principle quantum shells (energy levels) determines the period of the element. The proton number determines the element itself and its position.

Explanation:

Provide a few solutions and explain why they should be effective. Make a succinct conclusion. Provide a succinct summary of what you wrote. A good response.

What might a solution look like?

A good example of a solution is a mixture of salt and sugar. Any solution can be broken down into different parts. Solid, liquid, and gaseous solutions can be classified as solutions based on the physical states of the solvent and solute. Both the solute and the solvent have a solid in solid solutions. For instance, mixtures of polymer and ceramic.

What various categories of water-based solutions are there?

1. Depending on whether the solution contains water or not, different kinds of solutions on water as a solvent can be divided into two categories. the mixture in which freshwater acts as just a solvent and any state of homogenous component totally dissolves in it.

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An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons.

An Arrhenius acid increases the number of\(H^+\) ions in the water.

According to the Arrhenius theory, a substance which has hydrogen atom and can easily give hydrogen ion or proton in its aqueous solution is called as Arrhenius acid.

For example, when hydrochloric acid is dissolved in water, it forms chloride ion (\(Cl^-\)) and hydronium ion (\(H_3O^+\)).

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Answer:

Explanation:

Combustion can be defined as the burning of a compound in the presence of oxygen to produce carbon dioxide and water. Because it involves the release of heat (energy), it is referred to as an exothermic reaction.

Fuel is an organic compound and it's combustion will also go through the process above and also releases heat (exothermic reaction) into the atmosphere after burning. However, same can be said about forest fire also; as the forest is made up of plants (whose major constituents are organic also). The forest fire can also be termed as combustion because it burns in the presence of oxygen, releasing heat (energy) into the atmosphere (which also makes it an exothermic reaction).

A forest fire models the energy flow of fuel combustion by:

Combustion is the chemical process whereby there is a redox reaction that causes burning and produces smoke in the form of gas.

For combustion to occur, the following processes must occur:

As a result of this, a forest fire models the energy flow of fuel combustion by making use of a reactant like wood to create combustion.

Because this process expels energy, then it is known as an exothermic reaction.

Therefore, forest fire occurs:

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Answer:

B

Explanation:

because B has a lower bp it needs less time and energy to turn into vapour and is collected into the condenser first

(a) Writing an Initial Value Problem for the amount of salt in the tank at any time t<60)Initial Value Problem (IVP) is a differential equation accompanied by initial conditions. The differential equation we will use is:

(b) Solving the IVP in part (a) to find the amount of salt in the tank at any time t<60)To solve this differential equation, we can use the integrating factor method. The integrating factor is:

(c) Determining the amount of salt when the tank is half emptyThe tank is half empty when there is 30 gallons of solution in it. Since the tank is emptied in one hour, this happens when there is 30 gallons of brine in the tank. Therefore, the amount of salt in the tank when it is half empty is:y(60) = (2/3) + (2/3)e^(-3 × 60/V)We need to find V to solve for y(60). We know that the tank starts with 60 gallons of water, and 1 gallon of brine enters every minute and 3 gallons of solution leave every minute. Therefore, the volume of the tank is:

Salt is a collection of chemical compounds with the main component Sodium Chloride (NaCL) being the same as table salt. The process of making salt in Indonesia is generally by evaporating seawater using sunlight or other heat sources. Salt is made by collecting seawater and then evaporating it with sunlight so that only the salt crystals remain. Traditional salt making is by channeling seawater into ponds with the help of windmills.Apart from being a natural preservative, salt also has many other benefits. As for some of the benefits of salt for the body is to help the digestive system. Salt is believed to help the digestive system because salt can stimulate the digestive enzymes chloride and protein which help digestion.

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Answer:

kwuil is oink

Explanation:

oink=kwuil

Pik onion has oinked therefore it is kwuil.

Pik onion is kwuil so he oinked.

kwuil is oink

I hope this helps.

Answer:

kwuil is oink

Explanation:

Oinking is kwuil and kwuiling is onink

onink  =< kwuil

=kwuil + oink < zee onhions

zee onions = kwuil oniking

=kwuil is oink

You can also solve this with trigonometry.

I hope this helps

Shmiley fache wif big nose :0)

Modern society simply could not exist without measurement. Time, size, distance, speed, direction, weight, volume, temperature, pressure, force, sound, light, energy—these are among the physical properties for which humans have developed accurate measures, without which we could not live our normal daily lives.

Answer:

to know the length/height of something

Explanation:

for example, say you wanted a pool, you want it to be big enough to swim around in so you'd want to know the length of the pool you're going to buy

Considering the definition of electronic configuration and valence shell, the number of core electrons is 1, because the valance shell is the third energy level.

The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals).  

There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level. Electrons with less energy will be spinning at level 1.

Each level is divided into sub-levels. These sub-levels into which each level is divided can be up to 4. These 4 sub-levels are called: s, p, d, f.

Aufbau's principle is a principle of atomic physics, which explains how electrons are accommodated in their orbits around the nucleus of the atom.

This principle states that the filling of these orbitals occurs in increasing order of energy, that is, from the orbitals of lower energy to those of higher energy.

The simplest of the sub-levels is 1s. If you fill the 1s you can start filling the 2s. After the 2s sub-level is satisfied, the 2p can begin to fill and so on.  

The valence shell is the one where the outermost electrons are found, those electrons that are in the last level. Because it is the outermost shell, it is also the farthest from the atomic nucleus.

The valence shell is one whose electrons are responsible for the chemical properties of an element.

In this case, an atom has 2 electrons in the first energy level, 8 electrons in the second energy level, and 1 electron in the third energy level. So, the number of core electrons is 1, because the valance shell is the third energy level.

Learn more:

Answer:

El ciclo del carbono es un ciclo biogeoquímico por el cual el carbono se intercambia entre la biosfera, la litosfera, la hidrosfera y la atmósfera de la Tierra. ... Este ciclo puede ser dividido en dos: el ciclo lento o geológico y el ciclo rápido o biológico.

Explanation:

the answer will be 190

Explanation:

because R1= 0.5*0.5*8

=190

The substance that was NOT part of the mixture used in the Urey-Miller experiments is: C. carbon dioxide

The Urey-Miller experiments, conducted in 1952 by Stanley Miller and Harold Urey, aimed to simulate the conditions of early Earth's atmosphere and investigate the formation of organic compounds. The experiments involved creating a mixture of gases thought to be present in the early Earth's atmosphere and subjecting them to electrical discharges to simulate lightning. The purpose was to see if these conditions could produce organic molecules, such as amino acids. The mixture used in the Urey-Miller experiments typically consisted of water (A), hydrogen gas (B), ammonia (D), and methane (E). Carbon dioxide (C) was not part of the original mixture used in these experiments.

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Option A: It is the amount of energy stored in the intermolecular attractions that hold particles together in an ionic solid, and option C: it is the amount of enthalpy change that occurs when 1mol of ionic solid is converted into gaseous ions, describes lattice energy.

The enthalpy change required to convert one mole of an ionic solid into gaseous ionic components is known as lattice energy. The strength of the ionic bonds in an ionic compound is gauged by lattice energy. It holds the particles together in a molecule. Thus, option A and C describes lattice energy. It sheds light on a number of ionic solids' characteristics, such as their solubility, hardness, and volatility.

The lattice energy of an ionic solid cannot be measured directly, but only be detected with Born-Haber cycle. It is expressed in terms of kilo-joule per mole, KJ/mol.

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