A Cd/Cd2+ concentration cell is constructed in which both electrodes are pure cadmium at a temperature of 25°C. The Cd2+ concentration for one cell half is 1.3 M and for the other is 0.02 M.
(a) What is the magnitude of the voltage generated between the two cells?
(b) Which cell will be oxidized: the high or low concentration cell? Enter "0" for low or "1" for high in the space provided.

Fatty acids are part of the structure of many lipids except for sterols.

What are lipids?

Lipids are macromolecules made up of hydrocarbon chains or rings, which means that they contain a lot of energy. Lipids are organic molecules that contain carbon, hydrogen, and oxygen in a proportion that varies depending on the specific molecule. They are non-polar and insoluble in water, which means that they do not dissolve in water.

Lipids are categorized into three different classes: Fats and oils (triglycerides), phospholipids, and steroids. They are essential to many cellular functions, including energy storage, insulation, and membrane formation.

Examples of lipids include butter, oil, and cholesterol.

Learn more about sterols: https://brainly.com/question/33424736

#SPJ11

Answer:

The answer is B

Explanation:

A pipe to the ground

The equation of the reaction of the lab is:

2 Mg + O₂ -----> 2 MgO

We will use this equation to find the percent yield:

% yield = actual yield/theoretical yield * 100

We can calculate from the given data the actual yield of each trial.

Mass of MgO produced in trial 1 = 27.272 g - 26.690 g

Mass of MgO produced in trial 1 = 0.582 g

Actual yield 1 = 0.582 g

Mass of MgO produced in trial 2 = 27.351 g - 26.681 g

Mass of MgO produced in trial 2 =

Actual yield 2 = 0.67 g

Now we know the actual yield of both trials, but we still have to find the theoretical yield.

2 Mg + O₂ -----> 2 MgO

According to this equation, 2 moles of Mg (with excess O₂) will produce 2 moles of MgO, so their relationship is 1 to 1.

To find the theoretical yield we will use that relationship. First we have to find the number of moles of Mg that reacted in each trial.

mass of Mg in trial 1 = 27.044 g - 26.690 g

mass of Mg in trial 1 = 0.354 g

mass of Mg in trial 2 = 27.089 g - 26.681 g

mass of Mg in trial 2 = 0.408 g

molar mass of Mg = 24.31 g/mol

moles of Mg in trial 1 = 0.354 g/(24.31 g/mol)

moles of Mg in trial 1 = 0.014561 moles

moles of Mg in trial 2 = 0.408 g/(24.31 g/mol)

moles of Mg in trial 2 = 0.016783 moles

We said before that 1 mol of Mg will produce 2 moles of MgO. Let's find the number of moles that should have been produced in each trial.

moles of MgO in trial 1 = 0.014561 moles of Mg * 1 mol of MgO/(1 mol of Mg)

moles of MgO in trial 1 = 0.014561 moles

moles of MgO in trial 2 = 0.016783 moles of Mg * 1 mol of MgO/(1 mol of Mg)

moles of MgO in trial 2 = 0.016783 moles

Now we can find the theoretical yield of each trial using the molar mass of MgO:

molar mass of MgO = 24.31 g/mol + 16.00 g/mol

molar mass of MgO = 40.31 g/mol

mass of MgO theoretically produced in trial 1 = 0.014561 moles * 40.31 g/mol

mass of MgO theoretically produced in trial 1 = 0.5870 g

theoretical yield trial 1 = 0.5870 g

mass of MgO theoretically produced in trial 2 = 0.016783 moles * 40.31 g/mol

mass of MgO theoretically produced in trial 2 = 0.6765 g

theoretical yield trial 2 = 0.6765 g

Finally we can find the percent yield for each trial:

% yield trial 1 = actual yield trial 1/theoretical yield trial 1 * 100

% yield trial 1 = 0.582 g/0.5870 g * 100

% yield trial 1 = 99.15 %

% yield trial 2 = actual yield trial 2/theoretical yield trial 2 * 100

% yield trial 2 = 0.67 g/0.6765 g * 100

% yield trial 2 = 99.04 %

Answer: the % yield for trial 1 is 99.15 % and for trial 2 is 99.04 %

The density of sample X is 4 g/ml.

The given parameters;

The volume of the sample X is the increase in the volume of water after it was placed in the cylinder.

The density is obtained by dividing the mass of sample X by its volume as shown below;

\(Density = \frac{mass}{volume} = \frac{20}{5} = 4 \ g/ml\)

Thus, the density of sample X is 4 g/ml.

Learn more here:https://brainly.com/question/21261316

The volume of the gas changed by approximately 0.280 m³ during the process.

To find the change in volume of the gas during the process, we can use the equation:

ΔQ = nCvΔT

where: ΔQ is the heat absorbed (3870 J),

n is the number of moles of the gas (7.70 mol),

Cv is the molar heat capacity at constant volume,

ΔT is the change in temperature (24.2 °C = 24.2 K).

Since the change in internal energy is zero (ΔU = 0), we know that ΔU = ΔQ + ΔW, where ΔW is the work done by the gas. In this case, since the process is at constant pressure, we can write ΔW = PΔV, where P is the pressure (1.62E+5 Pa) and ΔV is the change in volume.

Now, using the ideal gas law, we can express ΔV in terms of ΔT:

ΔV = (nRΔT) / P

where R is the ideal gas constant (8.314 J/(mol·K)).

Substituting the given values into the equations:

ΔQ = nCvΔT

3870 J = 7.70 mol × Cv × 24.2 K

From the equation ΔV = (nRΔT) / P, we have:

ΔV = (7.70 mol × 8.314 J/(mol·K) × 24.2 K) / (1.62E+5 Pa)

Simplifying the equations and performing the calculations:

ΔQ = nCvΔT

3870 J = 7.70 mol × Cv × 24.2 K

Cv ≈ 2.00 J/(mol·K) (calculated from the above equation)

ΔV = (7.70 mol × 8.314 J/(mol·K) × 24.2 K) / (1.62E+5 Pa)

ΔV ≈ 0.280 m³

Therefore, the volume of the gas changed by approximately 0.280 m³ during this process.

Read more on internal energy here: https://brainly.com/question/29546504

#SPJ11

The stroke volume in the next few cardiac cycles will be 100 ml if the end-diastolic volume is increased from 135ml to 165m.

The formula for stroke volume is given as;

SV = EDV - ESV

Here SV represents stroke volume, EDV represents end-diastolic volume and ESV represents end-systolic volume.

First, we calculate this person's end-systolic volume as follows;

If the person’s stroke volume was 70ml and his initial diastolic volume was 135 ml, then:

70 = 135 - ESV

70 - 135 = -ESV

-65 = -ESV

ESV = 65ml

Now the stroke volume in the next few cycles if the end-diastolic volume increase to 165 ml can be calculated as follows;

SV = 165 - 65

SV = 100ml

Therefore, the stroke volume in the next few cardiac cycles is calculated to be 100ml.

To learn more about stroke volume, click here:

https://brainly.com/question/11142433

#SPJ4

False. The two types of nucleic acids found in living organisms are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). Ribose and deoxyribose are not nucleic acids; instead, they are sugar molecules that form the backbone of these nucleic acids.

In DNA, the sugar molecule is deoxyribose, while in RNA, it is ribose. Nucleic acids are composed of repeating units called nucleotides, which consist of a sugar molecule (ribose or deoxyribose), a phosphate group, and a nitrogenous base. DNA and RNA play essential roles in the storage and expression of genetic information within an organism, with DNA being the main genetic material and RNA serving as an intermediate in the production of proteins.

For more information on Nucleic acids see:

https://brainly.com/question/11309892

#SPJ11

If a radioactive isotope has a half-life of 400 million years, it will take 400 million years for 50% of the material to change to the daughter product.

How long it takes for half of the radioactive atoms to decay is known as the half-life of the isotope. A radioactive isotope's half-life is the amount of time it takes for half of the parent material to decay to the daughter product. It's worth noting that a half-life isn't a fixed amount of time for each radioactive isotope.

The following formula can be used to calculate the amount of radioactive isotope remaining after a given period of time:

t=ln(N₀/N) / λ

Where:

For this problem, we need to solve for the time (t) at which 50% of the radioactive isotope has decayed:

0.5N₀ = N₀ e^(-λt)

0.5 = e^(-λt)

t = ln(0.5) / (-λ)

We know that the half-life of this isotope is 400 million years, which means that λ is equal to:

ln(2) / (400,000,000 years)

λ = 0.00000000017 / year

Substituting that value into the formula:

t = ln(0.5) / (-0.00000000017 / year)

t ≈ 400,000,000 years

Learn more about radioactive isotope: https://brainly.com/question/28039996

#SPJ11

a. For the set of quantum numbers, n = 3, we can determine the maximum number of orbitals using the formula 2n^2. Plugging in the value of n, we get 2(3)^2 = 2(9) = 18. Therefore, in an atom with the quantum number set n = 3, there could be a maximum of 18 orbitals.

b. In this case, the set of quantum numbers is n = 5 and l = 3. The maximum number of orbitals can be determined using the formula 2(2l + 1). Substituting the values of l, we have 2(2(3) + 1) = 2(6 + 1) = 2(7) = 14. Thus, in an atom with the quantum number set n = 5 and l = 3, there could be a maximum of 14 orbitals.

c. Lastly, for the set of quantum numbers n = 4, l = 3, and ml = 2, we can determine the number of orbitals using the formula 2(2l + 1). Plugging in the values of l, we have 2(2(3) + 1) = 2(6 + 1) = 2(7) = 14. Therefore, in an atom with the quantum number set n = 4, l = 3, and ml = 2, there could be a maximum of 14 orbitals.

In short, the number of orbitals in an atom is determined by the values of the quantum numbers n, l, and ml. By using the formulas provided, we can calculate the maximum number of orbitals for each set of quantum numbers.

To know more about orbitals visit:-

https://brainly.com/question/32355752

#SPJ11

Answer:

Stirring brings fresh portions of the solvent in contact with the solute, therefore allows the solute to dissolve faster.

Answer:

D: -1

Explanation:

18 protons so +18

19 electrons -19

neutrons dont count there neutral

-19+18= -1

Answer: D: -1

Explanation: All protons have a +1 charge, neutrons are neutral, and electron have a -1 charge. Therefore it can be concluded that if the atom has 18 protons which all have +1 charge and 19 electrons which all have -1 charge, then the atom will have a -1 charge since 18-19=-1

The slopes and the y-intercepts are

The formula for calculating the slope of a line from the two coordinates that the line passes through A (x₁ , y₁) and B (x₂ , y₂)

m = (y₂ - y₁) ÷ (x₂ - x₁)

The y-intercept will occur if the value of x = 0.

1. Pick the first and the last coordinates (- 5 , - 4) and (10 , 2)

2. (2 , 0) and (8 , 9)

3. (1 , - 5) and (5 , - 1)

4. (- 1 , 5) and (5 , - 1)

5. (1 , 3) and (4 , 12)

6. (- 6 , 6) and (0 , 3)

7. (0 , - 5) and (6 , 10)

8. (- 3 , - 1) and (6 , 5)

Learn more about slope here: https://brainly.com/question/18439055

#SPJ1

One factor that influences the absorbance of a sample is the concentration (c). The expectation would be that, as the concentration goes up, more radiation is absorbed and the absorbance goes up. Therefore, the absorbance is directly proportional to the concentration.

What is beer lamberts law ?

The third factor is known as molar absorbance (ε), where concentrations are given in moles/liter and path lengths are given in centimeters. Some research areas talk more about extinction coefficients. When spectroscopy is used to measure the concentration of a sample, a specific wavelength of radiation is selected to irradiate the sample. As you probably know from other experience, certain chemical species absorb certain wavelengths of radiation and not others. Molar absorptivity is a measure of how much a species absorbs at a particular wavelength of radiation to which it is exposed. The process of absorbing electromagnetic radiation involves the excitation of species from ground states to higher energy excited states. This process is called an excited transition, and excited transitions have probabilities of occurrence. It is appropriate to talk about the allowed range of possible energy transitions within a chemical species. Some migrations are more legal or cheaper than others. Very favorable or very acceptable transitions have high molar absorptivity. Only slightly favorable or slightly tolerant transitions have low molar absorptivities. The higher the molar extinction coefficient, the higher the absorption. Therefore, molar absorbance is directly proportional to absorbance.

To learn more about beer lamberts law  , click the link below ;

https://brainly.com/question/8831959

#SPJ4

The volume of extract to dilute to 10.00 ml, given that the actual amount of cereal weighed for the above experiment was 2.5671 g of cereal and using the extraction procedure from the lab manual, to determine the appropriate dilution of the extract to yield 10.00 ml of a solution at 25.0 ppb is: 19.16 ml.

A laboratory manual is a book containing instructions and exercises that aid in the completion of laboratory experiments. It is a guide that assists students and researchers in performing experiments, in particular, science experiments.

Let's break down the problem statement:

The actual amount of cereal weighed for the above experiment was 2.5671 g of cereal.Using the extraction procedure from the lab manual, determine the appropriate dilution of the extract to yield 10.00 ml of a solution at 25.0 ppb.To determine the volume of extract to dilute to 10.00 ml:

First, let's calculate the concentration of the extract in ppb units; we are given the following concentration of 25.0 ppb.C = 25 ppbNow, the formula for ppb units is shown below;

Ppb = (mg/L) / (1,000 L/g)

We have: 25 ppb = (mg/L) / (1,000 L/g)mg/L = 25 x 1,000 x 1 g = 25 μg/L.

Using the volume formula for concentration, shown below;

C1V1 = C2V2

Where:

Now, let's substitute the values into the formula: C1V1 = C2V2.

We have;

V1 = C2V2 / C1= (25 x 10.00) / 25= 10.00 ml

So, we dilute the extract with 10.00 ml of solvent to prepare a 25.0 ppb solution of cereal.To determine the volume of extract needed, we subtract the volume of solvent used from the volume we want, which is 10.00 ml.

Therefore;

The volume of extract to dilute to 10.00 ml is 10.00 ml - 0.84 ml = 9.16 ml.

Learn more about laboratory manual: https://brainly.com/question/30362922

#SPJ11

When of a certain molecular compound x are dissolved in of cyclohexane. the molar mass of x is 104.8 g/mol.

given that :

mass of the x = 793 mg = 0.793 g

mass of the cyclohexane = 85 g = 0.085 kg

freezing point of the solution = 4.7 °C

freezing point of the cyclohexane = 6.5 °C

freezing point depression kf = 20.2 °C/m

the expression is given as :

ΔT = i kf m

m = ΔT / i kf

m = 1 × 1.8 / 20.2

m = 0.089 mol

molality =moles / mass in kg

moles = molality × mass

           = 0.089 × 0.085

            = 0.0075 mol

molar mass = mass / moles

                    = 0.085 / 0.0075

                    = 104.8 g/mol

The question is incomplete, the complete question is :

When 793 mg of a certain molecular compound X are dissolved in 85. g of cyclohexane , the freezing point of the solution is measured to be 4.7 °C. Calculate the molar mass of X.

To learn more about molar mass here

https://brainly.com/question/14766783

#SPJ4

Answer:

There are

0.0642 mol Na

2

CO

3

in

6.80 g

.

Explanation:

The chemical formula of sodium carbonate is

Na

2

CO

3

. The molar mass of sodium carbonate is

105.988439 g/mol

.

As a result of Boyle's law, at constant temperature as the pressure decreases the volume increases.

Boyle's law is an experimental gas law which describes how the pressure of the gas decreases as the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.

Mathematically, it can be stated as,

P∝1/V or PV=K. The equation states that the product of of pressure and volume is constant for a given mass of gas and the equation holds true as long as temperature is maintained constant.

Learn more about Boyle's law,here:

https://brainly.com/question/1437490

#SPJ1

36368.16J heat is required to convert 12. 0 g of ice at -10. 0 ºc to steam at 100. 0 ºc.

What is steam ?

The online store Steam is where you can buy, play, make, and discuss PC games. It is run by the game developer Valve. The platform contains thousands of games from both well-known and independent game companies, as well as DLC and user-generated features known as "mods." Steam was initially released for the macOS operating system in 2010 and the Linux operating system in 2012. In 2012, the first iOS and Android mobile apps to access online Steam features were made available. The portal also provides additional digital products like productivity tools, game soundtracks, films, and VR headsets like the Valve Index as well as Valve gaming hardware. According to IHS Screen Digest, the service held an estimated 75% of the market share for digital PC game distribution in 2013.

Learn more about steam visit here:

https://brainly.com/app/ask?q=What+is+steam+%3F

#SPJ4

A dose is the amount of a material, like a medicine or prescription, that is consumed or administered all at once or over a predetermined period of time.

Depending on the chemical being provided, doses are often expressed in units like milligrams (mg), micrograms (mcg), grams (g), or units (U).

We can apply a ratio to this issue to find a solution:

ABC is 350 mg/x ml and ABC is 1200 mg/three ml.

If we cross-multiply, we obtain:

350 mg * 3 ml equals 1200 mg * x ml of ABC.

If we simplify, we get:

ABC 350 mg x 3 ml = x ml = ABC 1200 mg

x ml = 0.875 ml

As a result, we need to provide about 0.9 ml of the stock solution to administer 350 mg of ABC.

Learn more about Dose, here:

https://brainly.com/question/29725527

#SPJ1

The organization and motion of particles within a substance are modeled by the particle theory of matter. The model is used to describe how gases, liquids, and solids behave physically. Arrangement and motion of particles.

When anything has a testing as well as a predetermined set of properties, it is said to be a substance. A substance would be any chemical unit or chemical class. Physically, a substance cannot be split. A pure substance's structural characteristics are constant. It included sugar and minerals like iron.

Pure substances are those that contain only one type of particle and are devoid of any mixtures. Metals such as iron, aluminium, silver, and gold are examples of pure substances.

To know more about Substance visit:

https://brainly.com/question/8242848

#SPJ1

Through homogeneous co-precipitation and traditional solid-state calcining, a red long persistent phosphor of -Zn3(PO4)2: Mn2+, Mg2+ was created.

learn more about phosphor here

https://brainly.com/question/25352398

#SPJ4

When the flame turns on and heats the gas inside the hot air balloon, the volume of the gas increases.

This is because as the temperature of a gas increases, the molecules in the gas move faster and collide more frequently, creating a greater pressure. This increase in pressure causes the gas to expand, which results in an increase in volume. Therefore, when the flame turns on and heats the gas inside the hot air balloon, the gas molecules move faster, collide more frequently, and create a greater pressure, causing the gas to expand and the volume to increase.

This phenomenon can be explained using the Gas Laws, specifically Charles's Law. Charles's Law states that the volume of a gas is directly proportional to its temperature, as long as the pressure and the amount of gas remain constant.

learn more about Gas Laws

https://brainly.com/question/27870704

#SPJ11

The expected boiling point ranking of the given compounds is in the order of highest to lowest will be:

• CH3OH

• CH3Cl

• CH4

The boiling point of a compound is influenced by factors such as the strength of intermolecular forces, molecular weight, and branching. Based on these factors, we can rank the given compounds by their expected boiling point:

• CH3OH (methanol) - Methanol has the highest boiling point among the given compounds due to its ability to form strong hydrogen bonds between its molecules. Hydrogen bonding is a strong intermolecular force that requires a significant amount of energy to break, which results in a higher boiling point.

• CH3Cl (chloromethane) - Chloromethane has a lower boiling point than methanol because it only has dipole-dipole interactions and van der Waals forces between its molecules. These intermolecular forces are weaker than hydrogen bonding, so less energy is required to overcome them, resulting in a lower boiling point.

• CH4 (methane) - Methane has the lowest boiling point among the given compounds because it is nonpolar and only has weak van der Waals forces between its molecules. These intermolecular forces are the weakest, requiring the least amount of energy to overcome, which results in the lowest boiling point.

Learn more about boiling point here:

https://brainly.com/question/28203474

#SPJ4

The ranking of these compounds by boiling point is:

1. CH3OH (Methanol)

2. CH3Cl (Chloromethane)

3. CH4 (Methane)

1. CH3OH (Methanol) - Boiling Point: 65°C

Methanol (CH3OH) is a colorless and flammable liquid that is the simplest alcohol, with a molecular formula of CH3OH. It is used in antifreeze, as a solvent, and as a fuel. It has a boiling point of 65.0 °C.

2. CH3Cl (Chloromethane) - Boiling Point: -24.3°C

Chloromethane (CH3Cl) is a colorless, flammable gas with a sweet odor. It is used as a solvent and a refrigerant, and has a molecular formula of CH3Cl. It has a boiling point of -24.2 °C.

3.CH4 (Methane) - Boiling Point: -161.5°C

Methane (CH4) is a colorless and odorless gas that is the main component of natural gas. It has the chemical formula CH4 and is the simplest hydrocarbon. It is used as a fuel for heating and cooking, and has a boiling point of -164.0 °C.

learn more about Chloromethane Refer:brainly.com/question/15106628

#SPJ4

Answer:

the particles with a negative charge are protons

Answer

It can Blind humans

Explanation:

Answer:

1

False. if they all moved together at any time then it would be a million things withinthe human species all at once at a high rate

Explanation:

20984Po→20582Pb+42α

4520Ca→4521Sc+0-1e+00ν

Explanation:

The alpha decay of polonum-209, which consists of the emission of an alpha particle, will leave behind the atom of a different element.

Notice that the identity of the element changes after the decay. This means that you're dealing with a nuclear transmutation, a process that converts an atom of a given element into an atom of a different element.

Answer:

The oxygen we breathe is not in atomic form. It is in its molecular form, which is two oxygen atoms joined together by bonds, and between its two atoms, this molecule has 16 protons, 16 electrons, and most commonly 16 neutrons. Answer 5: An oxygen atom contains eight protons.

The amount of heat released when 75 g of CH4O reacts is -1705.64 kJ.

The equation given is the balanced equation for the combustion of methanol (CH4O) with oxygen to form carbon dioxide (CO2) and water (H20). The value of ΔΗ given (-726 kJ) is the enthalpy change for the reaction, which represents the amount of heat released or absorbed when the reaction occurs.

To calculate the amount of heat released when 75 g of CH4O reacts, we need to use the equation: q = n x ΔΗ where,

We know that the molar mass of CH4O is 32.04 g/mol, so we can convert 75 g to moles using the following formula: n = m/M where,

So, n = 75 / 32.04 = 2.34 moles

Using this value of n in the equation above, we can calculate the heat released as q = 2.34 x -726 = -1705.64 kJ

Therefore, -1705.64 kJ of heat is released when 75 g of CH4O reacts.

Learn more about Enthalpy here:

https://brainly.com/question/16985375

#SPJ4