Define physical and chemical properties, provide three examples of each, discuss their reversibility, and
explain the fundamental differences between them.

The classification of the given compounds is as follows:

(a) lactose (C₁₂​H₂₂​O₁₁​) - non-electrolytes

(b) lactic acid (HC₃​H₅​O₃​) - weak electrolytes

(c) dimethylamine [(CH₃​)₂​NH] - weak electrolyte

(d) barium hydroxide Ba(OH)₂ - strong electrolytes

Electrolytes are substances that when in the molten or solution state conduct electricity and are decomposed by the direct current passing through them.

Electrolytes dissociate into the component ions when they are dissolved in water or in molten form. Some examples of electrolytes are acids and bases.

Strong electrolytes dissociate completely into one while weak electrolytes dissociate partially.

Non-electrolytes do not dissociate into ions in solution but remain as molecules. Some example of non-electrolytes is organic solvents.

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The average concentration of wastewater is 168 kg/m³.

The consumption of solvent per day = 100 kg/30 days

The consumption of solvent per day = 10/3 kg/day

Amount lost = 10/3×15/100

Amount lost = 0.5

Remaining amount of solvent = 3.3 - 0.5

Remaining amount of solvent = 2.8 kg/day

Recovered amount = 2.8×40/100

Recovered amount = 1.12 kg/day

Remaining amount of solvent = 2.8 - 1.12

Remaining amount of solvent = 1.68 kg/day

So, 1.68kg/day is received by wastewater. As 1 kg is 1000 gram. Thus, 1.68 kg is 1680 grams Concentration in wastewater = 1680/10

Concentration in wastewater = 168 kg/m³

Hence, the concentration in wastewater is 168 kg/m³.

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Answer:

pure water that's easy hope that helps

The best reagent for each step is NaNH2, NH2 and CH3I, and HBr.

First of all in the presence of strong base ammonia, we het the clcylated product chain elongation gives but-2-ene followed by bromination gives 2-dibromobutane.

Alkyne using NH3 gets converted into Elongated chain alkyne followed by Hbr.

The reaction of bromine with (E)-stilbene is a classic reaction performed as an example of an electrophilic addition reaction of alkenes. The reaction is stereospecific through an anti addition to the double bond. The traditional reaction uses a bromine solution in methylene chloride, which has very high toxcity.

This bromination reaction demonstrates the stereochemistry of the electrophilic addition of bromine to an alkene. The bromine in this greener approach is generated in situ and eliminates the use of methylene chloride.

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Taking into account the definition of calorimetry, the correct answer is las option: the initial temperature of the copper piece is 364°C.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c×m×ΔT

where:

In this case, you know:

Replacing in the expression to calculate heat exchanges:

If two isolated bodies or systems exchange energy in the form of heat, the quantity received by one of them is equal to the quantity transferred by the other body. That is, the total energy exchanged remains constant, it is conserved.

Then, the heat that the copper gives up will be equal to the heat that the water receives. Therefore:

- Qcopper = + Qwater

- 0.39 J/gC × 240 g× (42 C - Initial temperature of copper)= 4.18 J/gC× 400 g× (42 C - 24 C)

Solving:

- 93.6 J/C× (42 C - Initial temperature of copper)= 30,096 J

- 93.6 J/C× 42 C- (- 93.6 J/C)× Initial temperature of copper= 30,096 J

- 3,931.2 J +93.6 J/C × Initial temperature of copper= 30,096 J

93.6 J/C × Initial temperature of copper= 30,096 J+ 3,931.2 J

93.6 J/C × Initial temperature of copper= 34,027.2  J

Initial temperature of copper=34,027.2  J÷ 93.6 J/C

Initial temperature of copper= 364 °C

Finally, the initial temperature of the copper is 364 °C.

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Answer:

the correct answer is 364

q = m * c * ΔT

where q is the heat absorbed or released, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

We can assume that the heat lost by the copper is gained by the water, so:

q(copper) = -q(water)

where the negative sign indicates that the copper loses heat while the water gains heat.

The specific heat capacity of copper is 0.39 J/g °C, so:

q(copper) = 240.0 g * 0.39 J/g °C * (T(copper) - 24.0 °C)

The specific heat capacity of water is 4.18 J/g °C, so:

q(water) = 400.0 g * 4.18 J/g °C * (42.0 °C - T(copper))

Setting q(copper) equal to -q(water), we get:

240.0 g * 0.39 J/g °C * (T(copper) - 24.0 °C) = -400.0 g * 4.18 J/g °C * (T(copper) - 42.0 °C)

Simplifying and solving for T(copper), we get:

T(copper) = [(400.0 g * 4.18 J/g °C * 42.0 °C) + (240.0 g * 0.39 J/g °C * 24.0 °C)] / (240.0 g * 0.39 J/g °C + 400.0 g * 4.18 J/g °C)

T(copper) = 364.1 °C

Therefore, the initial temperature of the copper piece was 364.1 °C.

Hence, the answer is "364 °C".

The amount of CO2 dissolved in water can be calculated using Henry's Law, which states that the amount of gas dissolved in a liquid is proportional to the partial pressure of the gas above the liquid.

The equation for Henry's Law is:C = kH * P

where C is the concentration of the gas in the liquid (in mol/L), kH is the Henry's Law constant (in bar), and P is the partial pressure of the gas above the liquid (in bar).

We can convert the pressure used in the carbonation process from bar to atm (atmospheres) by dividing by the conversion factor of 1.01325 bar/atm:

P = 3.4 bar / 1.01325 bar/atm = 3.352 atm

We can then use Henry's Law to calculate the concentration of CO2 in the water:

C = kH * P = (1.65 * 10^3 bar) * (3.352 atm) = 5.53 mol/L

To convert this to grams of CO2 per liter of water, we need to multiply by the molar mass of CO2 (44.01 g/mol) and density of water (998 kg/m^3 or 0.998 g/mL):

5.53 mol/L * 44.01 g/mol * 0.998 g/mL = 244 g/L

Therefore, the amount of CO2 dissolved in a 1.00 L bottle of carbonated water at 298 K is 244 grams.

There are 246 grams of CO₂ dissolved in the 1.00 L bottle of carbonated water.

The amount of CO₂ dissolved in water can be calculated using Henry's Law, which states that the concentration of a gas dissolved in a liquid is proportional to the pressure of the gas above the liquid. The Henry's Law constant for CO₂ in water at 298 K is 1.65 x \(10^3\) bar.

The equation for Henry's Law is:

C = k * P

where C is the concentration of the gas in the liquid (in mol/L), k is the Henry's Law constant (in bar), and P is the partial pressure of the gas (in bar).

First, we need to calculate the partial pressure of CO₂ in the carbonated water bottle. The pressure used in the carbonation process was 3.4 bar, so we assume that the partial pressure of CO₂ in the bottle is also 3.4 bar.

Next, we can use Henry's Law to calculate the concentration of CO₂ in the water:

C = k * P

C = 5.61

Now we can calculate the mass of CO₂ in the bottle:

mass = concentration * volume * molar mass

The molar mass of CO₂ is 44.01 g/mol.

mass = (5.61) * (1.00 L) * (44.01 g/mol)

mass = 246 g

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Answer:

It continuously decreases.

Explanation:

the thermal motion makes the electrons to collide and disturb the free flow. Thus, conductivity is decreased.

Answer:

no not technically most of the time it is just their miles and maybe their esophagus, and also your stomach if you're lucky. Most of the time the ice cream isn't cold all the way down it is warmed up or by your core body temperature. The only way your full body would be cold when you eat ice creams if you are already cold in your and your core temperature has dropped.

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.  l nm = 1.0 × 10⁻⁶ fm

540 nanometers =  540 × 1.0 × 10⁻⁶ fm

                             =  5.40 x 10⁻⁴fm

Therefore, the correct option is option A.

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Answer:159.7grams

Explanation:

(55.85)2+(16)3

159.7grams

Answer:

The correct answer for plato/edmentum is C (159.7g)

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, by transferring electron or sharing electrons,  particles combine to form the variety of matter.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. By transferring electron or sharing electrons,  particles combine to form the variety of matter.

Therefore, by transferring electron or sharing electrons,  particles combine to form the variety of matter.

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The following are true statements regarding reversible reactions is a. a reversible reaction might proceed in only one direction, with negligible contribution from the reverse reaction, depending on conditions and c. the forward and reverse reactions may occur simultaneously.

Reversible reactions are reactions that can proceed in either direction. In reversible reactions, the products of the forward reaction can react to produce the original reactants. A reversible reaction is a chemical reaction that can go in either direction. The forward and reverse reactions occur simultaneously.

The equilibrium constant describes the relative concentrations of the reactants and products at equilibrium. The equilibrium constant will provide information about how far the reversible reaction goes.

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Answer:

isotope 2

Explanation:

it has the highest percentage abundance

Answer:

by Judith Curry On what we can learn from Goldilocks and The Three Bears ... In planetary science, the 'Goldilocks zone' is terminology for the the band ... We all know the fairy tale story of “Goldilocks and the three bears”, where GL ... as the discovery that the Earth was not the center of the solar system.

Explanation:

Explanation:

chemical energy electric energy light energy heat energy

When a person turns on a lightbulb by connecting its circuit to a battery, several energy transformations occur. There are  three types of energy transformations involved in the process.

1. Electrical to Light Energy:

When the circuit is completed by connecting the lightbulb to the battery, electrical energy from the battery flows through the circuit and enters the lightbulb. Inside the lightbulb, this electrical energy is transformed into light energy. The lightbulb contains a filament that heats up due to the flow of electricity, causing it to emit light. Therefore, electrical energy is transformed into light energy in this process.

2. Chemical to Electrical Energy:

The battery stores chemical energy, which is converted into electrical energy when the circuit is closed. Inside the battery, chemical reactions occur, generating a flow of electrons. These electrons create an electric current, which then travels through the circuit and powers the lightbulb. So, in this step, chemical energy from the battery is transformed into electrical energy.

3. Chemical to Heat Energy:

As electrical energy passes through the filament in the light bulb, some of it is converted into heat energy. The resistance of the filament causes it to heat up, and this heat energy is released into the surroundings. This is why a light bulb feels warm when it has been turned on for some time. Thus, in this step, electrical energy is transformed into heat energy.

Thus,electrical energy from the battery is transformed into light energy in the light bulb. Chemical energy in the battery is converted into electrical energy to power the lightbulb. Electrical energy passing through the light bulb's filament is transformed into heat energy.

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the value of the equilibrium constant is 4.85.

The expression of the equilibrium constant is obtained from the concentrations of the reactants and products present at the equilibrium stage. At a temperature of 492K, the reaction is

2NOBr(g) ⇌ 2NO(g) + Br2(g)

The concentration of NOBr(g) is 0.143 moles.

The concentration of NO(g) is 0.267 moles.

The concentration of Br2(g) is 0.268 moles.

The value of equilibrium constant, Kc is equal to:

Kc = [NO]^2[Br2] / [NOBr]^2,

where Kc is the equilibrium constant, [NO] is the concentration of nitrogen oxide, [Br2] is the concentration of bromine, and [NOBr] is the concentration of nitrogen oxide bromide

Kc = ([0.267 mol/L]^2 * [0.268 mol/L]) / [0.143 mol/L]^2

= 4.85 at 492K

Therefore, the value of the equilibrium constant is 4.85.

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Answer:

option c

Explanation:

ffuunkie. tfnhc dhrhrjebrjeieie

Answer:

Both,

Both,

Vertical

Explanation:

When you push a lawn mower, you can be moving up and down or across, when your pushing a wheel barrel you can do the same, when you do a push up your going up and down which is vertical.

Correct Answer: Boron family

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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N and C

Because Lithium and Sodium belong to group 1A whereas Magnesium is from group 2A, which are S block elements and they form ionic bond.

Answer:

N and C

Explanation:

Os the right answer

a) Saloni needs to add water and shake the test tube afterwards test it with litmus paper and the litmus will turn red that will confirm that the gas is acidic.

b) \(\mathrm{C}+\mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}\)

   \($\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{H}_{2} \mathrm{CO}_{3}$\)

A litmus test is a test which is conducted to check the presence of acid and base in a chemical solution . A litmus paper is used which is made from a particular species of lichens. A litmus will turn to blue color when exposed to a base and to red color when exposed to an acid.

In the Given question, Charcoal contains carbon, when it is burned it reacts with oxygen present in the atmosphere to form Carbon dioxide and later when this carbon dioxide reacts with water, it is converted into  carbonic acid gas. The acidic nature of the compound is proved later with the litmus test.

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Answer:

500ml

Explanation:

because 100 ×2 is 200 and the 300

500ml

The specific heat of mercury calculated from her data is 0.13 J/g°C.

Specific heat is a measure of how much energy is required to heat a substance. This is the amount of energy (in joules) required to heat 1 gram of a substance by 1°C. Different substances have different specific heats.

To answer this question, use the heat slaughter formula:

Q =mCΔT

In the question:

Heat energy: Q = 30.1 J

Mass of mercury: m = 12.5 g

T1 = 21.2

T2 = 39.6°C

Temperature:

ΔT = T2 –T1

∆T = 39.6 – 21.2

∆T = 18.4°C

The specific heat of mercury is?

Q =mCΔT

C = Q/mΔT

C = 30.1/12.5 x 18.4

C =30.1/230

C = 0.13 J/g°C

So, the specific heat of mercury is 0.13 J/g°C.

Question:

In the laboratory a student finds that it takes 30.1 Joules to increase the temperature of 12.5 grams of liquid mercury from 21.2 to 39.6 degrees Celsius.

The specific heat of mercury calculated from her data is_____J/g°C.

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For an electron in 4s orbital, the principal quantum number is 4, Azimuthal quantum number is 0, magnetic quantum number is 0 and spin quantum number is -1/2 or + 1/2.

There are four quantum numbers are used to describe completely the movement and trajectories of each electron within an atom. In atoms, there are a total of four quantum numbers. Principal quantum number n, designates the principal electron shell. The magnetic quantum number ml determines the number of orbitals and their orientation within a subshell. Electron spin quantum number designates the direction of the electron spin and may have a spin of +1/2. The orbital angular momentum quantum number determines the shape of an orbital, and therefore the angular distribution. The number of angular nodes is equal to the value of the angular momentum quantum number l.

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The balanced chemical equation is:

0.5C7H16 + O2 → 0.5CO2 + H2O

For balancing the chemical equation C7H16 + O2 → CO2 + H2O, we can use linear algebraic techniques. We need to determine the coefficients that balance the number of atoms on both sides of the equation.

Let's denote the coefficients for C7H16, O2, CO2, and H2O as a, b, c, and d, respectively.

The balanced chemical equation can be written as:

aC7H16 + bO2 → cCO2 + dH2O

To balance the carbon (C) atoms, we have:

7a = c (Equation 1)

To balance the hydrogen (H) atoms, we have:

16a = 2d (Equation 2)

To balance the oxygen (O) atoms, we have:

2b = 2c + d (Equation 3)

We have three equations (Equations 1, 2, and 3) and four unknowns (a, b, c, d). To solve this system of equations, we can write it in matrix form and find the solution using linear algebraic techniques.

The augmented matrix for the system of equations is:

[ 7 0 -1 0 | 0 ]

[ 0 0 0 -2 | 0 ]

[ 0 -2 2 -1 | 0 ]

By performing row operations to row-reduce the augmented matrix, we can obtain the solution:

[ 1 0 -0.5 0 ]

[ 0 1 -1 -0.5 ]

[ 0 0 0 0 ]

The solution to the system of equations is:

a = 0.5

b = 1

c = 0.5

d = 1

Putting the values of a,b,c, and d we get the balanced chemical equation as:

0.5C7H16 + O2 → 0.5CO2 + H2O

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Answer: 5,600 J

Explanation:

Joules = mass x specific heat x temperature change

32 x 4.184 x (54 - 12)

= 133.888 x 42

= 5,623.296

(significant figures => 5,600)

The species least likely to be produced when nitric acid reacts with a strong reducing agent such as zinc metal is N2O.

When nitric acid reacts with a strong reducing agent such as zinc metal, it undergoes a reduction reaction and is reduced to nitrogen oxide (NO) or nitrogen dioxide (NO2).

This is because nitric acid is a strong oxidizing agent and readily gives up its oxygen atoms to reduce other species. However, N2O is the least likely species to be produced because it is not a common intermediate in the reduction of nitric acid by reducing agents.

The reduction of nitric acid typically produces NO or NO2, which are more stable and common nitrogen oxide species. Therefore, N2O is not the expected product in the reduction of nitric acid by strong reducing agents such as zinc metal.

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