given three masses connected together with a massless rigid-link, where should you place the single mass if you want to replace these masses with it?

Answer:

The answer is C) 0.0300 mol

Explanation:

First you need to get the total amount of moles is dissolved in the solution. This can be obtained doing the following:

Molarity = moles of solute / liters of solution

moles of solute = molarity x liters of solution

First, the volume has to be in liters, then :

100. ml x (1 L / 1000 mL) = 0.100 L

(We then substitute)

moles of solute = 0.100 mol/L x 0.1 L = 0.0100 mol of solute (In this case Na3PO4)

Having the moles of the solute, we now need to find how many moles of Na+ ions are there.

We need the conversion factor of 3 Na+ moles per 1 mole of Na3PO4

We then find the amount of moles doing as follows:

0.0100 mol Na3PO4 x (3 mol Na+ / 1 mol Na3PO4) = 0.0300 mol Na+.

The number of moles of \(Na^+\) are 0.0300 and further calculation can be defined as follows:

Given that:

Molarity of \(Na_3PO_4\) = 0.100 M

Volume of a solution = 100. mL

To find:

Moles of \(Na^+\) ions

Formula used to calculate the number of moles when molarity is given is:

\(\text{Molarity of solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (mL)}}\)

Put the values in the above formula:

\(0.100M=\frac{\text{Moles of }Na_3PO_4\times 1000}{100 mL}\\\\\text{Moles of }Na_3PO_4=\frac{0.100\times 100}{1000}\\\\\text{Moles of }Na_3PO_4=0.01 moles\)

Since, 1 mole of \(Na_3PO_4\) contains 3 moles of \(Na^+\) and 1 mole of  \(PO_4^{3-}\) ions.

Moles of  \(Na^+\) ions = \((3\times 0.0100)=0.0300mol\)

So, the required moles of \(Na^+\) ions are 0.0300 moles.

Learn more about molarity: https://brainly.com/question/16587536

The separation distance on the chromatogram for the two components is 7.08 cm.

Chromatography is a technique that separates different components of a mixture.Pharmaceutical chemists use this technique to separate and analyze various compounds found in drugs and other pharmaceutical products.In a chromatography test, a sample is first dissolved in a solvent and then placed on a stationary phase, which is a solid or liquid that does not move. The solvent then moves through the stationary phase, carrying different components of the sample along with it. The rate at which a particular component moves through the stationary phase depends on its physical and chemical properties, such as its size, shape, and polarity.One way to measure the separation of different components in a chromatography test is to calculate their retention factor (Rf). The Rf value of a component is the ratio of its distance traveled by the solvent front to the distance traveled by the component itself. This value is used to compare the mobility of different components and identify them by comparing them to known standards.
In the given scenario, the pharmaceutical chemist runs a chromatography test on a substance and identifies two of its components based on their Rf values. The Rf values of the two components are 1.0 and 0.41, respectively, and the solvent front has traveled 12.0 cm from the sample's origin.To calculate the separation distance on the chromatogram, we need to use the formula: Separation distance = distance traveled by solvent front - distance traveled by component
For the first component with an Rf value of 1.0, the distance traveled by the component can be calculated as:
Distance traveled by component = (Rf value of component x distance traveled by solvent front) = (1.0 x 12.0 cm) = 12.0 cm.Therefore, the separation distance for the first component is: Separation distance = (12.0 cm - 12.0 cm) = 0 cm
For the second component with an Rf value of 0.41, the distance traveled by the component can be calculated as:
Distance traveled by component = (Rf value of component x distance traveled by solvent front) = (0.41 x 12.0 cm) = 4.92 cm. Therefore, the separation distance for the second component is: Separation distance = (12.0 cm - 4.92 cm) = 7.08 cm.
for such more questions on chromatogram
https://brainly.com/question/30914730

#SPJ8

To select four species that can be identified as molecules from the given list, you should look for species that are composed of two or more atoms chemically bonded together. The correct options are:

1. CO (Carbon monoxide) - A molecule consisting of one carbon atom and one oxygen atom bonded together.
2. CO2 (Carbon dioxide) - A molecule consisting of one carbon atom and two oxygen atoms bonded together.
3. O2 (Oxygen) - A diatomic molecule consisting of two oxygen atoms bonded together.
4. CH3OH (Methanol) - A molecule consisting of one carbon, four hydrogen, and one oxygen atom bonded together.

Your answer: Four species that can be identified as molecules from the list are CO, CO2, O2, and CH3OH.

To know more about Carbon monoxide:

https://brainly.com/question/10193078

#SPJ11

Answer:

B. A measure of the average kinetic energy of a substance.

Explanation:

Temperature is a measure of the average kinetic energy of the particles in an object.

Brainlist pls!

Answer:

A physical change

Explanation:

A physical change is a form of transformation in which an element or matter changes from one material state to another. For example from solid-state to liquid state through melting. Another is crushing and freezing.

Hence in this case, when a liquid is cooled during an investigation causing it to solidify. The process is called Freezing which occurred as a result of a PHYSICAL CHANGE.

It is more effective to perform an extraction with several small portions of solvent as opposed to one large portion of solvent of equal volume because the amount of the material left in the trash will be less.

The extraction of certain ratio of the solute is able to the distribute among the phases during each extraction. The various extractions with the lesser amounts of the solvent are more efficient than the single extraction with the huge amount of solvent.

The extraction is about to maximize the outside field of the communication between the two solvents, we can easily get the more surface area in the contact with the fewer amounts.

To learn more about extraction here

https://brainly.com/question/14522836

#SPJ4

Ionic bonds occur between metals and nonmetals because of the transfer of electrons from one atom to another, resulting in the formation of positively charged cations and negatively charged anions that are attracted to each other due to electrostatic forces.

Metals tend to lose electrons easily and become positively charged cations, while nonmetals tend to gain electrons and become negatively charged anions. When a metal and a nonmetal come together, the metal donates one or more electrons to the nonmetal, resulting in the formation of an ionic compound.This type of bonding is usually seen when there is a large difference in electronegativity between the atoms involved. The greater the difference, the stronger the resulting ionic bond.

To learn more about electrons:

https://brainly.com/question/1255220

#SPJ11

The molarity of the student's sodium hydroxide solution is 0.0689 M.

To determine the molarity of the sodium hydroxide solution, we can use the stoichiometry of the balanced equation between sodium hydroxide (NaOH) and oxalic acid (H2C2O4).

The balanced equation for the reaction between NaOH and H2C2O4 is:

2NaOH + H2C2O4 → Na2C2O4 + 2H2O

From the balanced equation, we can see that the ratio of NaOH to H2C2O4 is 2:1. This means that for every 2 moles of NaOH, 1 mole of H2C2O4 is consumed.

Given that the student used 45.3 mL of NaOH solution, we need to convert this volume to moles of NaOH. To do this, we need to know the molarity of the oxalic acid solution.

Using the given mass of oxalic acid (197 mg), we can calculate the number of moles of H2C2O4:

moles of H2C2O4 = mass of H2C2O4 / molar mass of H2C2O4

The molar mass of H2C2O4 is 126.07 g/mol.

moles of H2C2O4 = 0.197 g / 126.07 g/mol = 0.001561 mol

Since the stoichiometry of the reaction is 2:1, the number of moles of NaOH used is twice the number of moles of H2C2O4:

moles of NaOH = 2 * moles of H2C2O4 = 2 * 0.001561 mol = 0.003122 mol

Now we can calculate the molarity of the NaOH solution:

Molarity of NaOH = moles of NaOH / volume of NaOH solution in liters

Volume of NaOH solution = 45.3 mL = 45.3/1000 L = 0.0453 L

Molarity of NaOH = 0.003122 mol / 0.0453 L = 0.0689 M.

For more such questions on molarity  visit:

https://brainly.com/question/30404105

#SPJ8

The molar solubility of PbCl₂ in 0.15 M NaCl is 0.0026 M.

To calculate the molar solubility of PbCl₂ in 0.15 M NaCl, the following steps should be taken:

1. Write the balanced chemical equation for the dissolution of \(PbCl_2\) in water:

PbCl₂(s) ⇌ Pb²⁺(aq) + 2Cl⁻ (aq)

2. Write the expression for the solubility product constant (Ksp) for \(PbCl_2\):

Ksp = [Pb²⁺][Cl⁻]²

3. Substitute the given value of Ksp and the unknown concentration of Pb²⁺ into the Ksp expression:

2.4 * 10⁻⁴ = x[0.15 + x]²

Here, x represents the molar solubility of PbCl₂.

4. Simplify the equation by assuming that the concentration of NaCl (0.15 M) does not change significantly upon addition of PbCl₂. This allows us to neglect the x term in the denominator:

2.4 * 10⁻⁴ = x[0.15}²

5. Solve for x, the molar solubility of PbCl₂:

x = √(2.4 * 10⁻⁴ / 0.15²) = 0.0026 M

Therefore, the molar solubility of PbCl₂ in 0.15 M NaCl is 0.0026 M.

In summary, to calculate the molar solubility of PbCl₂ in 0.15 M NaCl, the solubility product constant (Ksp) expression is used with the given value of Ksp and unknown concentration of Pb²⁺. The concentration of NaCl is assumed to be constant, and the resulting equation is solved for the molar solubility of PbCl₂.

For more such questions on Molar solubility.

https://brainly.com/question/28170449#

#SPJ11

Complete Question:

Select the options that correctly reflect the steps required to calculate the molar solubility of PbCl2 in 0.15 M NaCl if Ksp for PbCl2 = 2.4 x 10-4.

Answer: Sunlight

Explanation:

According to Goog|e, "In addition to assisting in the development of heat within the structure, glass in greenhouses assists in the management of light within the greenhouse. The glass allows light to be transmitted from the sun to the plants within the structure, allowing the plants to grow properly."

I hope this helps!

Answer:

magnesium oxide

Explanation:

The value of for a mixture of polymer is 0.715 if the and the solvent b assume vs/rt = 1/6 and a fudge factor of 0.34 .

Option C is correct.

A polymer is any of a class of normal or engineered substances made out of exceptionally huge particles, called macromolecules, which are products of more straightforward compound units called monomers. Numerous minerals and man-made materials are based on polymers, which are the basis of many living materials.

The following formula can be used to determine the value for a mixture of solvent b and polymer a:

                          = [(1-)/(1-)](1/2)

where p and s are the particular volumes of the polymer and dissolvable, individually, and vs/rt is the volume part of the dissolvable.

             p = 9.0 (cal/cm³)0.5 s

              = 7.5 (cal/cm³)0.5 vs/rt

                           = 1/6

fudge factor = 0.34

Substituting these values , we get:

             = [(1-0.375)/(1-0.375+0.34x0.375)](1/2)

                 = [(0.625)/(0.8745)](1/2)

                           = 0.715

Hence , the value of for the given mixture is 0.715

Incomplete question:

What is the value of 0 for a mixture of polymer A (Sp = 9.0 (cal/cm3)0.5) and the solvent B (85 = 7.5 (cal/cm3)0.5)? Show your work for full credits.  Assume Vs/RT = 1/6 and a fudge factor of 0.34 in corresponding units.

A. 0.375

B. 0.5

C. 0.715

D. 0.035

Learn more about polymer:

brainly.com/question/1602388

#SPJ4

Plants use carbon to build leaves and stems, which are then digested and used for cellular growth by animals. Carbon is stored in the atmosphere as gases such as carbon dioxide. It is also stored in the oceans, where it is captured by a variety of marine organisms.

A heterotroph is an organism that, unlike an autotroph, cannot fix carbon and instead grows on organic carbon.

Carbon dioxide is pulled from the air by photosynthesis to produce carbon-based food for plant growth. Carbon is transferred from plants to animals.

Carbon from plants moves through food chains to the animals that eat them. Animals that eat other animals absorb carbon from their food as well.

Thus, Organic molecules produced by photosynthesizes are consumed by food chains, and cellular respiration converts the organic carbon back into carbon dioxide gas.

To learn more about the organic carbon, follow the link;

https://brainly.com/question/7666959

#SPJ6

Increasing the temperature will shift the equilibrium of the system in the direction that consumes heat.

In this case, the forward reaction is exothermic, meaning it releases heat, so increasing the temperature will favor the reverse reaction.

N₂(g) + 2H₂O(g) + heat ⇌ 2NO(g) + 2H₂(g)

By increasing the temperature, the system will respond by attempting to counteract the temperature increase. It does so by shifting the equilibrium to the left, which is the endothermic direction. This means that more reactants (N₂ and H₂O) will be favored, resulting in a decrease in the formation of products (NO and H₂).

Therefore, increasing the temperature will shift the equilibrium towards the left, favoring the formation of more reactants (N₂ and H₂O) and reducing the concentration of products (NO and H₂).

For more details regarding equilibrium, visit:

https://brainly.com/question/30694482

#SPJ1

Answer:

they help people realize their full potential

Explanation:

yes

Answer:

they seek to protect people and their property

Explanation:

Answer:

1 B

2A

#D

3B

1D

2B

3C

4A

A,C,A,B

C,A,C,A

C,A,A,B

Explanation:

Easy ive done this brings back memories

In  ecosystem, particles are carried as  bed load by rubbing particles together.Path of stream can be varied depending on amount of humus present in  soil and is measured in cubic meters per second and carrying capacity depends on  type of material through which stream flows.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

#SPJ2

The combustion of 0.87 gallons of octane produces approximately 6.98 kg of CO₂ and 3.21 kg of H₂O.

To calculate the amount of CO₂ and H2O produced in the combustion of octane, we need to first convert the volume of octane from gallons to moles using its density and molar mass.

The density of octane is around 0.703 g/mL and its molar mass is 114.23 g/mol. One gallon is approximately 3.785 liters.

So, the amount of moles of octane in 0.87 gallons is:

moles of octane = (0.87 gallons) x (3.785 L/gallon) x (0.703 g/mL) / (114.23 g/mol) = 19.8 moles

The balanced chemical equation for the combustion of octane is:

2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

From this equation, we see that 2 moles of octane reacts with 25 moles of oxygen to produce 16 moles of CO₂ and 18 moles of H₂O.

Using stoichiometry, we can calculate the amount of CO₂ and H₂O produced from 19.8 moles of octane:

To convert moles to grams, we can use the molar mass of each compound:

Therefore, the combustion of 0.87 gallons of octane produces approximately 6.98 kg of CO₂ and 3.21 kg of H₂O.

Learn more about combustion on:

https://brainly.com/question/10458605

#SPJ11

Explanation:

here's the answer to your question

Answer:

I'm not really sure. Sorry dude.

Explanation:

Sorry.

Answer:

here

Explanation:

This is the electron configuration of the element carbon.

Volume = Mass over Density =57⋅mL

Explanation:

We have been given a mass, and given a density, thus Mass over Density =20⋅g over 0.35⋅g⋅mL−1 = ??⋅mL.

the si unit for time is second

the si unir for length is meter

the si unit for mass is kilogram

the si unit for temperature is kelvin

1: Time: second 2. Length: meter 3. Mass: kilogram 4. Temperature kelvin are the SI units of measurements.

What do you mean by SI unit of measurements?

It is unit of the standard of reference which is chosen to measure any type of physical quantity.

SI Units of Measurements is the system which stands for the international system of unit.

The SI, uses standard symbols, units and abbreviations, developed by the Bureau International.

The SI unit of mass is the kilogram, length is a meter, time is second, temperature is kelvin, electric current is ampere, amount of substance is mole, luminous intensity is candela.

SI unit has a huge amount of application  universally in both technical and scientific research to avoid the confusion.

This system is important as  it helps the entire world to understand the measurements in one set of unit systems.

Learn more about SI unit, here:

https://brainly.com/question/12750330

#SPJ2

Explanation:

a chemical reaction in which the rate of reaction is proportional to the concentration of each of three reacting molecules

803 mmHg is equal to 106.44 kPa. This can be calculated using the equation P (kPa) = P (mmHg) × 0.133322.

The pressure of 803 mmHg is equal to 106.44 kPa. This can be calculated by using the following equation: P (kPa) = P (mmHg) × 0.133322. Therefore, 803 mmHg is equal to 106.44 kPa. To understand this relationship better, pressure can be thought of as a measure of how much force is applied to a certain area. The unit of measure for pressure is the Pascal (Pa), and one kPa is equal to 1000 Pa. The unit of measure for pressure in mmHg is the millimeter of mercury (mmHg). One mmHg is equal to 133.322 Pa. Therefore, one kPa is equal to 7.5 mmHg. To convert from mmHg to kPa, the equation is

P (kPa) = P (mmHg) × 0.133322. Using this equation, the pressure of 803 mmHg can be converted to 106.44 kPa.  

To learn more about kPa :

https://brainly.com/question/26843253

#SPJ11

The partial pressure of helium (He) in the container is 3 atm. Therefore, the correct answer is option c. 3 atm.we need to consider Dalton's law of partial pressures

To determine the partial pressure of helium (He) in the sealed container, we need to consider Dalton's law of partial pressures. According to this law, the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas.

Given that the total pressure in the container is 6 atm and equal masses of helium (He) and neon (Ne) are present, we can assume that the partial pressure of helium is equal to the partial pressure of neon.

Let's denote the partial pressure of helium as P(He) and the partial pressure of neon as P(Ne). Since the masses of He and Ne are equal, their mole ratios are also equal.

Therefore, we can write the equation:

P(He) / P(Ne) = n(He) / n(Ne)

where n represents the number of moles.

Since the mole ratios are equal, the partial pressures of He and Ne are also equal. Therefore, the partial pressure of helium is half of the total pressure:

P(He) = 6 atm / 2 = 3 atm

For more such questions on  Dalton's law of partial pressures.

https://brainly.com/question/14119417

#SPJ8

When the temperature of a liquid is decreased, vapour pressure of the liquid is also decreased as a result.

A substance's physical characteristic is vapour pressure. It is based on how quickly the chemicals evaporate and condense.The pressure of a system is directly proportional to its temperature, according to Gay Lussac's Law.

P∝T

As a result, the temperature raises the system's molecules' kinetic energy. As a result, the system's vapour pressure is likewise raised.

Therefore, When the temperature of a liquid is decreased, vapour pressure of the liquid is also decreased as a result.

Learn more about vapour pressure here:

https://brainly.com/question/16870960

#SPJ4

Answer:

See explanation

Explanation:

The number of electrons in each principal energy shell increases as the number of shells increases because more electronic orbitals become available to accommodate the electrons.

For instance, the n= 2 level only accommodates eight electrons in the s and p orbitals whereas the n=3 level accommodates 18 electrons in s, p and d orbitals respectively.

Each principal level accommodates 2n^2 electrons where n= the principal energy shell.

The increase in the number of shell leads to increase in the number of electrons.

The number of electrons in each principal energy shell increase as the number of the shell increases because each cell can accommodate 8 electrons except the first shell which has only 2 electrons. The number of electrons increases when we go down the group due to addition of new shells.

The atom added new shells in the atom if the existing shells fill with electrons and no place is available for the remaining electrons so we can conclude that the increase in the number of shell leads to increase in the number of electrons.

Learn more: https://brainly.com/question/19756408

The half-life for the decomposition of substrate 1 when the initial concentration is 2.01 M cannot be determined from the given data.

The half-life of a reaction is the time it takes for the concentration of the reactant to decrease by half. In this case, we are given the initial rate data for the decomposition of substrate 1 at different concentrations, but we don't have information on the rate of change of concentration over time.

To determine the half-life, we need to observe the decrease in concentration over a period of time and calculate the time it takes for the concentration to decrease by half. However, the given data only provides information about the initial rates of the reaction at different substrate concentrations, which is not sufficient to determine the half-life.

To determine the half-life, additional data points with corresponding concentrations and reaction times would be required. With such data, we could plot a graph of concentration versus time and determine the time it takes for the concentration to reach half of its initial value.

To learn more about half-life  click here

brainly.com/question/17438356

#SPJ11

Answer: im pretty sure its D

Explanation:

Answer: D

Explanation:

Water is comprised of 2 Hydrogen atoms and 1 Oxygen atom. This gives us a total of 8 valence electrons to form bonds with.

Because Hydrogen is in first row of elements it can only hold a total of two electrons. This means each Hydrogen holds 2 electrons.

But that means there are four more electrons. VSEPR theory is basically how electron repulsion causes atoms to arrange in different ways.

There will be four electrons left on the oxygen because they can not go anywhere else. This will cause the hydrogen molecules to move away from the lone electrons and cause a bent geometry rather than a straight-line geometry.

Answer:

the beaker is the correct answer