write a word equation for the reaction between dilute hydrochloric acid and magnesium

Answer:

If the length of a wire is doubled the resistance is shortened if it is thicker is is more durable due to the electrons having more room to spread out and flow through the wire

I hope this will help you

Answer:

Average Mass = 107.88 amu

Explanation:

We can calculate the average mass of an element by mutlpying the mass of its isotopes by their respective relative abundance and then making a total sum. Meaning that for this case:

Answer:

hi

Explanation:

C6H14 has a molecular weight of 86.18 g/mol (612.01 + 141.01) g/mol.

Weight is a measurement of the force of gravity acting on an object. It is inversely related to the mass and gravitational acceleration of an object. Despite the fact that the terms weight and mass are frequently used interchangeably in ordinary conversation, it is crucial to understand the difference between the two. Weight is a measurement of the force of gravity acting on an object, whereas mass was an indication of the quantity of matter that makes up that object.

A physical quantity called force defines the interaction of two systems or objects. It has both size (size) and direction because it is a form of vector quantity.

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Answer:

Erosion: The process of eroding or being eroded by wind, water, or other natural agents.

Abrasion: The process of scraping or wearing something away.

Water: A type of liquid that fills our ocean, lakes, rivers etc.

Glaciers: A slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles.

Deflation: The action or process of deflating or being deflated.

Plucking: Take hold of something and quickly remove it from its place.

Deposition: The action of deposing someone, especially a monarch.

Gravity: The force that attracts a body toward the center of the earth, or toward any other physical body having mass.

Weathering: The process of wearing or being worn by long exposure to the atmosphere.

Moraines: A mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity.

Mass Movements: Processes of erosion, transport and accumulation of material that occur on both gentle and steep slopes mainly owing to gravitational forces

Wind: The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.

Explanation:

I hope this is the answers you want (also sorry for being so late)

In any chemical reaction, the mass of the products must equal the mass of the reactants. The mass of product B is the same as the combined mass of Reactant A and H₂O.

Answer:

sh5barch shougi

Explanation:

please mark my answer brainliest...

condition...pressure remains constant.

1. The temperature at which the volume of gas has been 960 ml is \(\rm \bold{19.99\;^\circ C}\).

2. The temperature at which the volume of gas has been \(\rm 300\;cm^3\) is \(\rm \bold{90^\circ C}\).

1. The gas has been assumed to be an ideal gas. For an ideal gas, the relationship between temperature and volume at constant pressure has been given as:

\(\dfrac{V1}{T1}=\dfrac{V2}{T2}\)

Where, the initial volume, \(V1=720\;\text {ml}\)

The final volume, \(V2=960\;\text {ml}\)

The initial temperature, \(T1=15\;^\circ \text C\)

Substituting the values, the final temperature, T2 can be given as:

\(\rm \dfrac{720\;ml}{15\;^\circ C}=\dfrac{960\;ml}{\textit{T}2} \\\textit T2=\dfrac{15\;^\circ C}{720\;ml}\;\times\;960\;ml\\\textit T2=19.99\;^\circ C\)

The temperature at which the volume of gas has been 960 ml is \(\rm \bold{19.99\;^\circ C}\).

2. The temperature for gas to occupy \(\rm 300\;cm^3\) has been given as:

Where, the initial volume, \(V1=900\;\rm{cm^3}\)

The final volume, \(V2=300\;\rm {cm^3}\)

The initial temperature, \(T1=270\;^\circ \text C\)

Substituting the values, the final temperature, T2 can be given as:

\(\rm \dfrac{900\;cm^3}{270\;^\circ C}=\dfrac{300\;cm^3}{\textit{T}2} \\\textit T2=\dfrac{270\;^\circ C}{900\;cm^3}\;\times\;300\;cm^3\\\textit T2=90\;^\circ C\)

The temperature at which the volume of gas has been \(\rm 300\;cm^3\) is \(\rm \bold{90^\circ C}\).

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1- U(r) has a repulsive region at small r due to electron-electron repulsion, followed by an attractive region at intermediate r due to electron-nucleus attraction, and a negligible potential at large r.

The potential energy, U(r), for a system of two atoms can be represented graphically as a function of the internuclear separation distance, r. At small values of r, the atoms experience repulsion due to the electron-electron interactions, resulting in a steep increase in potential energy. This repulsive region prevents the atoms from getting too close to each other.

As the internuclear separation distance increases, the attractive force between the electrons and the nuclei becomes dominant, leading to a decrease in potential energy. This attractive region is typically characterized by a shallow potential well. At intermediate values of r, the potential energy reaches a minimum, indicating a stable configuration where the atoms are bonded.

2- Bohr's model describes the hydrogen atom as a nucleus with an electron orbiting it in quantized energy levels. Electrons can transition between levels by absorbing/emitting photons with energy given by ΔE = hf. The model has limitations but introduced the concept of discrete energy states in atoms.

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In a galvanic cell, the reaction proceeds towards the production of products.  ΔG starts < 0, becomes more negative

Option B is correct .

As the reaction proceeds, the Gibbs free energy (ΔG) reduces, and the following are true:  ΔG starts < 0, becomes more negative.

When the reaction in a galvanic cell proceeds towards the production of products, the Gibbs free energy starts with a negative value, and it becomes even more negative.

The Gibbs free energy (ΔG) is a measure of the available energy in a system that can be used to do work. It measures the difference between the free energy of the final state and the initial state.The Gibbs free energy change of a system is dependent on the enthalpy and entropy change. If the enthalpy change is negative (exothermic), and the entropy change is positive (disorderly), the Gibbs free energy change is negative, and the reaction is spontaneous.

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The salts whose aqueous solutions are acidic are those that contain the conjugate acid of a weak base. This means that when dissolved in water, they donate protons (H+) to the solution, leading to an increase in the concentration of hydrogen ions and a decrease in pH.

From the given options, the response that contains all the salts whose aqueous solutions are acidic and no other salts is option (b) I, IV, and VII.

Salt I is ammonium chloride (NH4Cl), which is formed from the reaction between ammonia (a weak base) and hydrochloric acid. It ionizes in water to give ammonium ions (NH4+) and chloride ions (Cl-), and since ammonium ion is the conjugate acid of the weak base ammonia, its aqueous solution is acidic.

Salt IV is sodium bisulfate (NaHSO4), which is formed from the reaction between sulfuric acid and sodium hydroxide. It ionizes in water to give hydrogen ions (H+) and bisulfate ions (HSO4-), and since hydrogen ion is acidic, its aqueous solution is also acidic.

Salt VII is potassium hydrogen phthalate (KHC8H4O4), which is a weak acid. It ionizes in water to give hydrogen ions (H+) and phthalate ions (C8H4O42-), and since it is a weak acid, its aqueous solution is acidic.

Therefore, the response that contains all the salts whose aqueous solutions are acidic and no other salts is option (b) I, IV, and VII.

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Answer:

in copper from different plastics because appliances of codes to power day in wire copper the cover to use to plastic

In terms of the above, Solid sulfur sublimes below the pressure of 0.027mmHg.

This refers to the process by which substances change directly from the solid phase to the gas phase without passing through the intermediate liquid phase.

Sulfur that has been sublimed is created through a time-honored natural chemical process. This sublimation, which takes place in high-temperature furnaces, enables the product to reach 99.99% particle single purity

Therefore, one can say that sublimation is an endothermic phase transition( phase change that absorbs heat from the surrounding environment) that takes place at temperatures and pressures below the triple point of a chemical in the phase diagram.

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The Haber process's value of ∆G at 298 K is -73.2 kJ/mol. The reaction occurs spontaneously in the forward direction because ∆G is negative.

To calculate ∆G for this reaction at 298 K, we can use the equation:

∆G = ∆G° + RTln(Q)

where ∆G° is the standard free energy change, R is the gas constant, T is the temperature in Kelvin, and Q is the reaction quotient.

First, we need to determine the value of Q. For this, we use the partial pressures of the gases at equilibrium:

Q = (P(NH₃))² / (P(N₂) * P(H₂)³)

Substituting the values, we get:

\(Q = \frac{{(0.50 \, \text{{atm}})^2}}{{(1.0 \, \text{{atm}}) \cdot (3.0 \, \text{{atm}})^3}}\)

Q = 1.85 x 10^-5

Next, we need to determine ∆G°. For this, we can use tabulated standard free energy of formation values to calculate the change in free energy for the reaction.

The standard free energy of formation values for N₂, H₂, and NH₃ are 0 kJ/mol, 0 kJ/mol, and -16.5 kJ/mol, respectively.

\(\Delta G^{\circ} = (2 \cdot \Delta G^{\circ}_f(NH_3)) - (\Delta G^{\circ}_f(N_2) + 3 \cdot \Delta G^{\circ}_f(H_2))\)

\(\Delta G^{\circ} = (2 \times (-16.5 \, \text{kJ/mol})) - (0 \, \text{kJ/mol} + 3 \times 0 \, \text{kJ/mol})\)

∆G° = -33.0 kJ/mol

Substituting the values in the first equation, we get:

\(\Delta G = -33.0 \, \text{kJ/mol} + (8.314 \, \text{J/mol}\cdot \text{K}) \times (298 \, \text{K}) \times \ln(1.85 \times 10^{-5})\)

∆G = -33.0 kJ/mol - 40.2 kJ/mol

∆G = -73.2 kJ/mol

Therefore, the value of ∆G at 298 K for the Haber process is -73.2 kJ/mol. Since ∆G is negative, the reaction is spontaneous in the forward direction.

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Complete question :

Calculate ∆G at 298 K for a mixture of 1.0 atm N₂, 3.0 atm H₂, and 0.50 atm NH₃ being used in the Haber process: N₂(g) + 3H₂(g) ⇌ 2NH₃(g)

Answer:

0.0125mol/dm³

Explanation:

Given parameters:

Mass of carbon dioxide  = 0.22g

Volume of water  = 400cm³

Unknown:

Concentration in mol/dm³ =  ?

Solution:

Concentration is the amount of solute dissolved in a solvent.

The formula is expressed as;

    Concentration  = \(\frac{number of moles}{volume}\)  

Number of moles  = \(\frac{mass}{molar mass}\)

       Molar mass of CO₂   = 12 + 3(16) = 44g/mol

Number of moles  = \(\frac{0.22}{44}\)   = 0.0005mol

Now,

             1000cm³  = 1dm³

             400cm³ = \(\frac{400}{1000}\)  = 0.4dm³

Insert the parameters and solve;

     Concentration  = \(\frac{0.005}{0.4}\)  = 0.0125mol/dm³

Answer:

A. Tissues are made up of cells

Explanation:

I just googled it :3

Answer: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Hopefully i helped

Explanation:

Answer: Alkaline-earth metal

Explanation:

Answer:

Channel 7's frequency is 117.5 MHz

Answer:

174 MHz - 180 MHz w/ center frequency of 177 MHz

Explanation:

216 - 174 = 42

42/7 = 6

6 + 174 = 180          -           7                   -               177 MHz

180 + 6 = 186          -           8                   -               183 MHz

186 + 6 = 192          -           9                   -               189 MHz

192 + 6 = 198          -          10                   -               195 MHz

198 + 6 = 204          -          11                   -               201 MHz

204 + 6 = 210          -          12                  -               207 MHz

210 + 6 = 216          -           13                  -               213 MHz

Answer:

Explanation:Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero.

If two waves that are completely out phase if meet they results in destructive interference. Hence, their intensities decreases for the resultant wave.

A wave of greater, lower, or the same amplitude is created when two waves merge through interference by combining their displacements at all points in space and time.

The interaction of waves that are coherent or correlated with one another, either because they originate from the same source or because their frequencies are similar or almost identical, leads to both constructive and destructive interference.

All sorts of waves, including light, radio, acoustic, surface water waves, gravity waves, and matter waves, can exhibit interference effects. In constructive interference, the waves are in single phase forms a resultant wave with higher amplitude.

When waves from out of phase meets, the resultant wave will have an amplitude less than the individual amplitudes.

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Approximately 12.45 grams of solid silver chromate will precipitate when 150 mL of 0.500 M silver nitrate solution is added to excess potassium chromate.

To determine the number of moles of AgNO3 present in 150 mL of a 0.500 M AgNO3 solution, we can use the formula:

moles = concentration × volume

Given:

Concentration of AgNO3 solution = 0.500 M

Volume of AgNO3 solution = 150 mL

First, we need to convert the volume from milliliters (mL) to liters (L) since the concentration is given in moles per liter (M).

1 L = 1000 mL

Therefore, the volume of the AgNO3 solution in liters is:

150 mL × (1 L / 1000 mL) = 0.150 L

Now we can calculate the moles of AgNO3 using the formula:

moles = concentration × volume

moles = 0.500 M × 0.150 L

moles = 0.075 mol

So, there are 0.075 moles of AgNO3 present in 150 mL of the 0.500 M AgNO3 solution.

Now, let's proceed to determine how many grams of solid silver chromate (Ag2CrO4) will precipitate when the AgNO3 solution reacts with excess potassium chromate (K2CrO4).

From the balanced chemical equation:

2AgNO3(aq) + K2CrO4(aq) → Ag2CrO4(s) + 2KNO3(aq)

We can see that the molar ratio between AgNO3 and Ag2CrO4 is 2:1. Therefore, for every 2 moles of AgNO3, we will form 1 mole of Ag2CrO4.

Since we have 0.075 moles of AgNO3, we can calculate the moles of Ag2CrO4 formed:

moles of Ag2CrO4 = 0.075 mol / 2 = 0.0375 mol

To determine the mass of Ag2CrO4, we need to multiply the moles by its molar mass. The molar mass of Ag2CrO4 is calculated by summing the atomic masses of each element in the compound:

Ag2CrO4 = 2(Ag) + 1(Cr) + 4(O) = 2(107.87 g/mol) + 1(52.00 g/mol) + 4(16.00 g/mol) = 331.87 g/mol

mass of Ag2CrO4 = moles of Ag2CrO4 × molar mass of Ag2CrO4

mass of Ag2CrO4 = 0.0375 mol × 331.87 g/mol = 12.45 g

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Tthe standard cell potential of the redox reaction is 2.459 V.

To calculate the standard cell potential (E°cell), we subtract the reduction potential of the anode from the reduction potential of the cathode. The cathode is where reduction occurs, so we use the reduction potential of Ag, which is +0.799 V.

The anode is where oxidation occurs, so we use the reduction potential of Al and reverse the sign since it is an oxidation reaction, resulting in -1.66 V.

E°cell = E°cathode - E°anode

E°cell = +0.799 V - (-1.66 V)

E°cell = +0.799 V + 1.66 V

E°cell = 2.459 V

Therefore, the standard cell potential of the redox reaction is 2.459 V.

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Answer:

Carbon:  14

Oxygen: 16

Nitrogen: 15

Sulpher: 16

Yes, the reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate happens when they are combined giving products by a reaction called double displacement reaction.

What is double displacement reaction?

Double displacement reaction is also called as double displacement exchange. This happens when some parts of 2 ionic compounds which are reacting are exchanged between them, making 2 new compounds. The positive and negative ions swap their places between the reactants in this reaction.

The reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate give 2 products that is copper nitrate and potassium sulfate. This reaction is known as double displacement reaction.

Balanced chemical equation:

2KNO3 + CuSO4 ----> Cu(NO3)2 + K2SO4

Therefore, the reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate is possible and it gives products like copper nitrate and potassium sulfate making it a double displacement reaction.

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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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Answer:

The answe is all of the above

The magnitude of the force acting on the body is 4000 Newtons.

To find the magnitude of the force, we can use Newton's second law of motion, which states that the force applied to an object is equal to the product of its mass and acceleration.

The given information includes the mass of the body (80 kg) and the resulting velocity (10 m/s). However, since the time duration (0.2 seconds) is also provided, we can use it to calculate the acceleration of the body.

The formula to calculate acceleration is:

Acceleration = Change in Velocity / Time

The change in velocity can be calculated by subtracting the initial velocity (which is 0 m/s as the body is at rest) from the final velocity:

Change in Velocity = Final Velocity - Initial Velocity

Change in Velocity = 10 m/s - 0 m/s

Change in Velocity = 10 m/s

Now, we can calculate the acceleration:

Acceleration = Change in Velocity / Time

Acceleration = 10 m/s / 0.2 s

Acceleration = 50 m/s²

Finally, we can calculate the magnitude of the force using Newton's second law:

Force = Mass x Acceleration

Force = 80 kg x 50 m/s²

Force = 4000 N

Therefore, the magnitude of the force acting on the body is 4000 Newtons.

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The enthalpy change when 1 mole of gaseous atoms is formed from elements in its standard state is called the enthalpy change of atomization.

It is defined as the enthalpy change that occurs when one mole of a substance in its standard state is converted into gaseous atoms at the same temperature and pressure. This process requires the input of energy, which is typically provided by heat. The enthalpy change of atomization is usually expressed in units of kilojoules per mole (kJ/mol).

For example, the enthalpy change of atomization for chlorine gas is +121 kJ/mol. This means that it takes 121 kilojoules of energy to convert one mole of chlorine gas into gaseous chlorine atoms at standard temperature and pressure.

This process involves breaking the bonds between the atoms in the elements and forming new bonds between the individual atoms to create the gaseous atoms. The enthalpy change associated with this process is a measure of the energy required to break the bonds and the energy released when the new bonds are formed.

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Metallic solids,

the atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties. All exhibit high thermal and electrical conductivity, metallic luster, and malleability.

Answer: c. metallic