How many mole of calcium (Ca) are in 9.00 x 1016 atoms of Ca?

Answer:

down below

Explanation:

The police's influence can happen based on a response to a problem. An example is when the police are called because of a thief child. If the police handles the situation correctly-using reasonable force, if necessary, and reading them their rights- the public will perceive the police in a good light or way. If the police use gross misconduct and do not go by the book, then they will be perceived as an enemy or in a bad light or way.

According to the given statement, A flow rate of 3.15 x 10^-5 kL.hr⁻¹ is equivalent to 8.75 µL.s⁻¹. To convert kL.hr⁻¹ to µL.s⁻¹, we can use the steps: (Given below)

liquids flow is the amount of liquids that moves in a given amount of time. When measuring the flow of water supplies, different units are frequently used, including cubic feet per second (cfs), cubic meters per second (cms), gallons per minute (gpm), and others.

⇒ Convert kiloliters (kL) to liters (L) by multiplying by 1000.

⇒ Convert hours (hr) to seconds (s) by multiplying by 3600.

⇒ Convert liters per hour (L.hr⁻¹) to microliters per second (µL.s⁻¹) by dividing by 3.6.

Using these steps, we get:

3.15 x 10^-5 kL.hr⁻¹ = 3.15 x 10^-5 x 1000 L.hr⁻¹ = 0.0315 L.hr⁻¹

0.0315 L.hr⁻¹ = 0.0315 / 3600 L.s⁻¹ = 8.75 x 10^-6 L.s⁻¹

8.75 x 10^-6 L.s⁻¹ = 8.75 x 10^-6 x 10^6 µL.s⁻¹ = 8.75 µL.s⁻¹

Therefore, a flow rate of 3.15 x 10^-5 kL.hr⁻¹ is equivalent to 8.75 µL.s⁻¹.

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When designing a scientific question, you should ensure the question is:

A scientific question is an inquiry that scientists examine via methods such as observation, experimentation or data collection leading to an answer.

They often require specific parameters for setting up experiments along with means for measuring outcomes or phenomenon under investigation while also needing testable results to establish validity. As such successful ones must possess traits like precision in defining boundaries within which observations will take place making them measurable so they may produce documented evidence supporting the validity of their findings

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First question

\(Pb(NO_3)_2 + KI \rightarrow PbI_2 + KNO_3\)

Balaneced:

\(Pb(NO_3)_2 + 2KI \rightarrow PbI_2 + 2KNO_3\)

Find how many moles potassium iodide it is in 345.0 grams

\(n_{KI} = \frac{345.0 \ g}{166.0 \ g/mol} = 2.078 \ mole\)

Find how many moles potassium nitrate there is for 2.078 moles \(KI\)

\(n_{KNO_3} = \frac{2}{2} \cdot n_{KI} = 2.078 \ mole\)

Find how many grams potassium nitrate there is in 2.078 moles \(KNO_3\)

\(m_{KNO_3} = 2.078 \ mol \cdot 101.1 \ g/mol = 210.1 \ g\)

Second question

\(yield \ \% = \frac{experimental}{theoretical} \cdot 100 = \frac{195.3 \ grams}{210.1 \ grams} \cdot 100 = 93.0 \ \%\)

Answer:

\(\boxed{O_2 \: ^{2-} (\sigma2s)^2(\sigma∗2s)^2(\sigma2pz)^2(π2py,π2px)^4(π∗2py,π∗2px)^4}\)

\(\boxed{O_2 \: ^{1-}(\sigma2s)^2(\sigma∗2s)^2(\sigma2pz)^2(π2py,π2px)^4{ (π∗2py)}^{2} {(π∗2px)}^{1}}\)

Explanation:

\(\sf \: Electronic \: configuration \: of \: O_2 \: ^{2-} and \: O_2 \: ^{1-}\)

Electronic configuration of any diatomic molecule can be determined using MOT(molecular orbital theory).

To know the electronic configuration of above two molecules, draw the MOT of O2 molecule.(refer the diagram)

There are 16 electrons in O2 molecule out of which Four electrons are in non bonded state. Remaining 12 electrons of 16 will be filled according to MOT, since O2 is not a S-P mixing case, in without S-P mixing case the sigma orbital(σ2pz) lies below the Pi orbital(π2px,π2py) in bonding state as you can see in the diagram, on other hand the other diatomic molecules like B2, C2 & N2 are S-P mixing case where Pi orbital lies below and sigma orbital lies above.

Now, the electronic configuration of O2 molecule is

\((\sigma2s)^2(\sigma∗2s)^2(\sigma2pz)^2(π2py,π2px)^4(π∗2py,π∗2px)^2 \)

There are two electrons unpaired electrons in MOT hence the O2 molecule is paramagnetic which contradicts VBT, Thats why MOT dominant VBT.

in case of O2^2-(peroxide linkage) the two electrons enters in the Anti Bonding of pi orbital. hence the electronic configuration of O2^2- is

\((\sigma2s)^2(\sigma∗2s)^2(\sigma2pz)^2(π2py,π2px)^4(π∗2py,π∗2px)^4\)

since the HOMO (highest occupied molecular orbital) is paired the O2^2- is diamagnetic in nature.

Coming to O2^1- (superoxide linkage) the one electron enters in the Anti Bonding of pi orbital hence the electronic configuration comes out,

\((\sigma2s)^2(\sigma∗2s)^2(\sigma2pz)^2(π2py,π2px)^4{ (π∗2py)}^{2} {(π∗2px)}^{1} \)

The HOMO of O2^1- is unpaired hence it is Paramagnetic in nature.

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The assumption that accounts for the great compressibility of gases compared to liquids and solids is assumption 1: Gases are made up of molecules which are relatively far apart. Option A)

The assumption that accounts for the great compressibility of gases compared to liquids and solids is assumption 1: Gases are made up of molecules which are relatively far apart.

In gases, the molecules are widely spaced and have significant gaps between them. This allows gases to be easily compressed under pressure. When external pressure is applied to a gas, the molecules can be brought closer together, reducing the volume occupied by the gas. The gaps between the molecules provide room for compression, allowing gases to occupy a smaller volume.

In contrast, liquids and solids have molecules or particles that are closely packed together. The intermolecular forces in liquids and solids are stronger, limiting their compressibility. The molecules or particles are already in close proximity, leaving little room for further compression.

Therefore, the assumption that gases consist of molecules that are relatively far apart accounts for their greater compressibility compared to liquids and solids. Hence Option A) is correct.

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Answer:

equal and opposite

Explanation:

The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object

Temperature has an impact on the hot air balloon's internal pressure. The molecules move more quickly and forcefully against the interior wall of the balloon as they warm up.

Because the average kinetic energy of the gas molecules in a balloon drops as temperature rises, the frozen balloon shrank. As a result, the molecules move more slowly and collide with the balloon's interior wall less frequently and weakly, causing the balloon to somewhat contract.

These illustrations show how temperature can change the volume of a fixed amount of a confined gas while maintaining a constant pressure are generally accurate: The volume rises with rising temperature and falls with falling temperature.

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Here we want to perform a change of units.

We will see that 40°F is equivalent to 4.44°C.

First, we need to remember the linear relationship to transform from degrees Fahrenheit to degrees Celsius.

°C = (°F - 32°)/1.8

Now we just need to replace F by 40°F (or just 40°, as we are changing the units)

C = (40° - 32°)/1.8 = 8°/1.8 = 4.44°

So we can conclude that 40°F is equivalent to 4.44°C.

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736.84g is the mass of a sample of "impure" ore if it is 47.5 %by mass CuCO3 and produces 350.0 grams of Cu.

Copper(II) carbonate or cupric carbonate is a chemical compound with formula CuCO ₃. At ambient temperatures, it is an ionic solid consisting of copper(II) cations Cu²⁺ and carbonate anions CO²⁻ ₃.

Ore is a naturally occurring rock or silt that has precious minerals in it that may be extracted, processed, and sold for a profit. These minerals are usually metals. Mined ore is then processed or refined, frequently by smelting, to remove the valuable metals or minerals.

To find the total mass of CuCO3 follow the given steps:

Given:

Mass percent=47.5% by mass

Mass of Cu =305.0 g

mass percent = (mass of chemical ÷ total mass of compound) x 100.

Rearranging the above eq.

Total mass of compound= mass of chemical /mass percent*100

Total mass of compound =350/47.5*100=736.84g

Hence, 736.84g is the mass of a sample of "impure" ore if it is 47.5 %by mass CuCO3 and produces 350.0 grams of Cu.

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The strand 1 of hydrocarbons is used to produce plastic, hence option D is correct.

Raw resources like natural gas, oil, or plants that have been processed into ethane and propane are used to make plastics. The subsequent "cracking" procedure uses heat to transform ethane and propane into ethylene and propylene. To produce various polymers, these components are mixed.

Propylene is a substance found in large quantities in petroleum. In order to speed up chemical processes, refiners combine heated propylene with a catalyst to create plastic. Propylene molecules start to cluster together like beads on a thread as a result.

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Answer:

You are correct. The answer is \(X_{3} Z\).

Considering the definition of compound, chemical formula and Avogadro's Number, there are 4.8184×10²⁴ atoms of O in 2 moles of H₃PO₄.

In a compound there are atoms of different elements joined by forces that we call chemical bonds.

The chemical formula indicates the number and type of different atoms present in the molecule.

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

In this case, in 1 mole of the compound H₃PO₄ you have:

Then, in 2 moles of H₃PO₄ you have 8 moles of O.

Now, you can apply the following rule of three: if by definition of Avogadro's number 1 mole of oxygen contains 6.023×10²³ atoms, 8 moles of oxygen contains how many oxygen atoms?

\(number of atoms=\frac{8 molesx6.023x10^{23}atoms }{1 mole}\)

number of atoms= 4.8184×10²⁴ atoms

Finally, there are 4.8184×10²⁴ atoms of O in 2 moles of H₃PO₄.

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Answer:

The monosaccharides, amino acids, bile salts, vitamins, and other nutrients are absorbed by the cells of the intestinal lining

Explanation:

Answer:

The monosaccharides, amino acids, bile salts, vitamins, and other nutrients are absorbed by the cells of the intestinal lining.

Explanation:

To answer this question, we need to know the concentration of the RbOH solution. Without this information, we cannot determine the amount of RbOH present in the 28.3 mL sample.
However, if we assume that the concentration of the RbOH solution is known, we can use the formula:
moles of solute = concentration x volume

To find the number of moles of RbOH in the 28.3 mL sample. From there, we can use the molar mass of RbOH (102.47 g/mol) to calculate the mass of RbOH in the sample.
For example, if the concentration of the RbOH solution is 0.1 M, then:
moles of RbOH = 0.1 M x 0.0283 L = 0.00283 moles
mass of RbOH = 0.00283 moles x 102.47 g/mol = 0.290 g
So, a 28.3 mL sample of a 0.1 M RbOH solution would contain 0.290 g of RbOH.
In summary, the amount of RbOH present in a 28.3 mL sample of a solution depends on the concentration of the solution. Without knowing the concentration, we cannot determine the amount of RbOH in the sample.

complete question not found in the search engine.

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The mitochondrion organelle is much like an engine because it powers the cell just like the engine powers a system.

The mitochondrion is one of the double membrane-bound organelles in the eukaryotic cell. It primarily functions as the cell's powerhouse by generating the energy necessary for metabolic reactions.

Oxidative respiration happens within the mitochondrion and energy in the form of ATP is generated for the use of the cell. This function is comparable to the engine of a vehicle which helps generate the necessary energy to drive the vehicle forward.

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Answer:

What i would do is put it in the nearest sink or better yet a bathtub. because if it was violent, do you really want that everywhere?

Explanation:

:)

Answer:

A state of balance in which the rates of the forward and reverse reactions are equal.

Explanation:

The dynamic equilibrium is a state of balance in which the rates of the forward and reverse reactions are equal, like we can see in the following drawing:

And the concentration of the reactants and products become stable in time.

Answer: A state of balance in which the rates of the forward and reverse reactions are equal.

Explanation:

chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time.

Answer:

oil = burn for 8 days = absurd = doesnt make sense but it happened lol

Explanation:

The value of x is 1.

To solve the linear system using Cramer's rule, we need to find the value of x in the equation 1x + 3(2) + 9 = 16.

Simplifying the equation, we have:

x + 6 + 9 = 16

x + 15 = 16

x = 16 - 15

x = 1

Therefore, the value of x is 1.

Cramer's rule is a method used to solve systems of linear equations by using determinants. In this case, we have a single equation with one variable, so the determinant involved is a 1x1 matrix. The determinant of a 1x1 matrix is simply the value of the element.

The determinant of the coefficient matrix in this equation is 1. The determinant of the entire system is the determinant of the coefficient matrix divided by the determinant of the matrix formed by replacing the column of the variable with the constants.

Since the determinant of a 1x1 matrix is the value of the element, we have:

determinant of the entire system = determinant of the coefficient matrix / determinant of the constant matrix

= 1 / 1

= 1

Therefore, the determinant of the entire system is 1.

Using Cramer's rule, we can solve for the value of x by dividing the determinant of the matrix formed by replacing the column of the variable with the constants by the determinant of the coefficient matrix. In this case, both determinants are 1. Thus, The value of x is 1.

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Answer:

Cautiously and avoiding filling in the central area so that it does not overflow when filling, since being very beach makes filling difficult.

Explanation:

The basins are shallow, that is why filling is difficult, the filling must be slow, low intensity and at the edges not placing the water filling in the center of the basin.

When you fill a basin with liquid water, you can see that the water takes the shape of the container in which it is contained. This is because in the liquid state, water has molecules farther apart than in the solid state.

You can notice this property when performing an experiment with liquid and solid water.

When filling a glass, liquid water takes on the shape of a glass, and solid water, such as an ice cube, remains the same shape when placed in a glass.

Therefore, when filling a basin with water we perceive a property of the physical state of water, in liquid form. Water is one of the few substances that can be found naturally in liquid, solid and gaseous states.

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Answer:

answer is B

Explanation:

hope I helped

The element that can bond with titanium (Ti) in order to form a polar covalent bond is nitrogen (abbreviated as N).

A covalent bond is a type of chemical bond in which two different atoms interact due to differential electronegative charges. A polar covalent bond is formed in the case that differential electronegativity between atoms that may share negatively charged electrons through a covalent bond.

In consequence, a polar covalent bond is a special class of covalent bond where atoms show an unequal distribution in the covalent bond.

Therefore, with this data, we can see that polar covalent bonds represent a special class of covalent bonds where the atoms form a bond but they are distributed in an equal way, which occurs between titanium and nitrogen due to their electronegative charges and therefore unequal distribution of these charges.

Complete question:

Which element can bond with titanium (Ti) to form a polar covalent bond?A.

beryllium (Be)

B.

fluorine (F).

C.

manganese (Mn)

D.

nitrogen (N)

E.

oxygen (0)

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Considering the mechanism -

Step 1: A + B → AB

Step 2: AB + C → AC + B

Overall: A + C → AC

Here AB is the intermediate and B is a catalyst.

AB is an intermediate of the reaction because it is formed and completely utilized in the reaction mixture by itself.

A catalyst is a type of species which is added to the reaction mixture but it remains unchanged as it do not participate in the overall reaction. A catalyst helps the reaction to form the products at a faster rate.

Intermediate is formed from the reactants which interacts to produce immediately visible products of a chemical reaction, while catalyst results in speeding up of a chemical reaction and it is not consumed in the reaction.

Complete question is -

Macmillan Learning

Consider the mechanism.

Step 1: A + B → AB

Step 2: AB + C → AC + B

Overall: A + C → AC

Which species is an intermediate?

A

AB

AC

B

Which species is a catalyst?

AC

B

AB

A

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Answer:

option 18 is the non reactive

The major thermodynamic product of the reaction between C₅H₈ and HBr is the most stable product, which is usually the one with the lowest free energy. On the other hand, the major kinetic product is the product that is formed through a faster and less controlled reaction pathway.

This  thermodynamic product product is formed through a slower and more controlled process, which allows for the formation of stronger chemical bonds and results in a more stable final product.

This  kinetic product  is formed due to its lower activation energy, which makes it easier to form, but it may not necessarily be the most stable product.

In the case of C₅H₈ and HBr, the reaction can result in both thermodynamically and kinetically stable products, meaning that there can be multiple products formed, each with different stability properties. The thermodynamically stable product is the one with the lowest free energy, while the kinetically stable product is the one with the lower activation energy.

In summary, the major thermodynamic product of the reaction is the most stable product, while the major kinetic product is the product that is formed through a faster and less controlled reaction pathway. However, it is important to note that the exact products of the reaction can vary based on the reaction conditions and reactant concentrations.

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Complete question:

What are themajor thermodynamic and kinetic products of the reaction.

C₅H₈ + HBr (1 equivalent) ------> thermodynamically stable + Kinetically stable

By the concept of calculating moles ,it can br concluded that the no. of atoms of phosphorus in 8.80mol of copper(II) phosphate is=1.06\(x10^{25}\)

A mole is defined as amount of substance containing as many as elementary entities that are there in atoms of exactly 12 g of carbon-12.Therefore we can say,1 mole of copper(II) phosphate, Cu3(PO4)2, contains three moles of copper(II) cations and two moles of phosphate anions.

Again 1mole of phosphate anions contains one mole of phosphorus and four moles of oxygen.Considering all these informations we can conclude that:1 mole of copper(II) phosphate contains 2 moles of Phosphorus

Accordingle the sample contains=(8.80\(x\)2) moles of Phosphorus

                                    =(17.6\(x\)Avogadro's constant) atoms of  Phosphorus

                                    =(17.6\(x\)6.022\(x\)\(10^{23}\)) atoms of  Phosphorus

                                    =1.06\(x10^{25}\) [approx] no. of Phosphorus atoms

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In 8.80 moles of copper(II) phosphate, there are approximately 1.06 x 10²⁵ atoms of phosphorus.

The number of atoms of phosphorus in a given amount of a compound can be calculated using the concept of mole in chemistry. Copper(II) phosphate is Cu3(PO4)2, containing 2 moles of phosphorus (P) for every 1 mole of the compound. Avogadro's number (6.022 x 10²³) gives the number of atoms in one mole.

So, if there are 8.80 moles of copper(II) phosphate, there would be 2 × 8.80 moles of phosphorus. Multiplying this by Avogadro's number gives the total number of phosphorus atoms.

Therefore, the number of phosphorus atoms is 2 × 8.80 × 6.022 x 10²³ = 1.06 x 10²⁵ atoms of phosphorus.

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Answer:

Percentage yield of carbon dioxide is 49.9%

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2CH3(CH2)2CH3 + 13O2 —> 8CO2 + 10H2O

OR

2C4H10 + 13O2 —> 8CO2 + 10H2O

Next, we shall determine the masses of butane and oxygen that reacted and the mass of carbon dioxide produced from the balanced equation. This is illustrated below:

Molar mass of butane C4H10 = (12×4) + (10×1)

= 48 + 10

= 58 g/mol

Mass of C4H10 from the balanced equation = 2 × 58 = 116 g

Molar mass of O2 = 16 × 2 = 32 g/mol

Mass of O2 from the balanced equation = 13 × 32 = 416 g

Molar mass of CO2 = 12 + (16×2)

= 12 + 32

= 44 g/mol

Mass of CO2 from the balanced equation = 8 × 44 = 352 g

Summary:

From the balanced equation above,

116 g of butane reacted with 416 g of oxygen to produce 352 g of carbon dioxide.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

116 g of butane reacted with 416 g of oxygen.

Therefore, 34.29 g of butane will react with = (34.29 × 416) / 116 = 122.97 g of oxygen.

From the calculation made above, we can see clearly that only 122.97 g out of 165.7 g of oxygen reacted completely with 34.29 g of butane. Therefore, butane is the limiting reactant and oxygen is the excess reactant.

Next, we shall determine the theoretical yield of carbon dioxide.

In this case, we shall use the limiting reactant because it will give the maximum yield of carbon dioxide as all of it is used up in the reaction.

The limiting reactant is butane and the theoretical yield of carbon dioxide can be obtained as follow:

From the balanced equation above,

116 g of butane reacted to produce 352 g of carbon dioxide.

Therefore, 34.29 g of butane will react to produce = (34.29 × 352) / 116 = 104.05 g of carbon dioxide.

Therefore, the theoretical yield of carbon dioxide is 104.05 g

Finally, we shall determine the percentage yield of carbon dioxide as follow:

Actual yield of carbon dioxide = 51.9 g

Theoretical yield of carbon dioxide = 104.05 g

Percentage yield of carbon dioxide =?

Percentage yield = Actual yield /Theoretical yield × 100

Percentage yield of carbon dioxide = 51.9 / 104.05 × 100

Percentage yield of carbon dioxide = 49.9%