given that the solubility reaction for calcium phosphate is Ca3(PO4)2(s)⇌3Ca^2+ (aq) 2PO4^3−(aq) why does the addition of acid increase the solubility of calcium phosphate?
- It decreases the phosphate ion concentration, forcing the equilibrium to the right. - It increases the phosphate ion concentration, forcing the equilibrium to the right. - It increases the phosphate ion concentration, forcing equilibrium to the left. - It decreases the phosphate ion concentration, forcing the equilibrium to the left. - It decreases the calcium ion concentration, forcing the equilibrium to the right. - It increases the calcium ion concentration, forcing the equilibrium to the right. - It decreases the calcium ion concentration, forcing the equilibrium to the left. - It increases the calcium ion concentration, forcing equilibrium to the left.

Answer:

Bottom line: A redshift reveals how an object in space (star/planet/galaxy) is moving compared to us. It lets astronomers measure a distance for the most distant (and therefore oldest) objects in our universe.

Explanation:

A redshift reveals how an object is moving in space and enables astronomers to discover otherwise-invisible planets and the movements of galaxies, and to uncover the beginnings of our universe.

They use a property called a "redshift" to describe the motion of an objects moving away from each other in space. Redshift occurs when an object emitting electromagnetic radiation recedes from an observer. The light detected appears "redder" than it should be because it is shifted toward the "red" end of the spectrum.Because the location of spectral features usually shifts to longer wavelengths -- towards the red end of the spectrum -- astronomers refer to this as the redshift of a galaxy. Take a look for yourself at the appearance of some very distant, very fast-moving galaxies in the Hubble Ultra-Deep Field .

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Yes, a higher heat of combustion for a fuel means it is more efficient. The heat of combustion is the amount of heat produced when a unit amount of a substance burns.

Therefore, a higher heat of combustion indicates that more heat is generated when the fuel burns. This, in turn, means that more energy is available from the fuel, making it more efficient.Therefore, a fuel with a higher heat of combustion provides more energy per unit of fuel. As a result, it is generally more efficient because it requires less fuel to produce the same amount of energy as a less efficient fuel with a lower heat of combustion.In summary, a higher heat of combustion means that a fuel is more efficient because it produces more energy per unit of fuel. This reduces the amount of fuel required to produce the same amount of energy, resulting in better fuel efficiency.

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The number of moles of NaF that will be produced from 3moles of Na is 3 moles.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, sodium reacts with fluorine as follows:

2Na+ F₂ → 2NaF

Based on the above equation, 2 moles of Na will produce 2 moles of NaF

This means that 3 moles of Na will produce 3 moles of NaF.

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When pieces of two ionic compounds are exchanged, creating two new compounds, this reaction is known as a double replacement reaction (also known as a double displacement, exchange, or metathesis reaction).

What is Double Displacement Reaction?

When one reactant is partially replaced by another, the reaction is referred to as a twofold displacement reaction.

Double displacement reactions can be described as follows:

AD = CB + CD + AB

In a double replacement process, the ions in two reactant ionic compounds are exchanged for the same ions in two new product compounds.

When two reactants swap cations or anions to produce two new products, the process is known as a double replacement reaction.

Double displacement reactions and metathesis reactions are other names for double replacement processes.

Double replacement reactions include neutralisation, precipitation, and gas production.

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Answer:

Crushing or grinding increases the surface area of the salt that is exposed to the molecules of water. Stirring increases the speed at which the particles of salt come in contact with the water molecules.

The substance undergoing a chemical or physical change is called a reactant. Reactants are starting materials that participate in a chemical reaction, which can result in the formation of new chemical compounds or changes in the physical properties of the substances involved.

In a physical change, the reactants retain their chemical identity, but undergo a change in their physical state or properties, such as melting, freezing, boiling, or changing color. In a chemical change, the reactants undergo a chemical reaction that results in the formation of new chemical compounds, breaking of chemical bonds, or release of energy. Understanding the properties and behavior of reactants is crucial in predicting and controlling chemical reactions in various fields, from materials science to biochemistry.

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There are a lot of ionic compounds in fireworks, most of them are salts, like: Strontium Nitrate and Strontium Carbonate ( both in the color red); Calcium Carbonate and Calcium Chloride (orange); Sodium Nitrate, Sodium Oxalate (yellow); Barium Nitrate and Barium Carbonate (green) and so on. For the gunpowder itself we have the Potassium Nitrate as an ionic compound.

The chemical reaction for the combustion of black powder is:

6KNO3 + C7H4O + 2S -> K2CO3 + K2SO4 + K2S + 4CO2 + 2CO + 2 H2O + 3N2

It's not just a single reaction, but this is a general representation of it.

The theoretical yield of Fe2(SO4)3 if 20.00 g of FePO4 reacts with an excess of Na2SO4 is 26.52g.

A chemical equation is an expression that represent the chemical reaction between two or more substances. It consists of the chemical formulas of the reactants in and the products along with the physics state of the reactants and the products solid liquid gas etc. And the symbol that denoted the type of reaction that is talking please I'll eat you double arrow of the film visible reaction the number of the atoms of each element in the reactants and products must be the same on the both side of the equation.

1) Chemical equation:

2FePO4 + 3Na2SO4 → Fe2(SO4)3 + 2Na3PO4

2) Theoretical molarity ratios:

2 mol FePO4 : 3 mol Na2SO4 : 1 mol Fe2(SO4)3 : 2 mol Na3PO4

3) Convert 20.00 g of FePO4 into number of moles

number of moles = mass in grams / molar mass

molar mass of FePO4 = 150.82 g/mol

numer of moles = 20.00 g / 150.82 g/mol = 0.1326 mol FePO4

4) Proportionality

1 mol Fe2(SO4)3                x
----------------------- =  ------------------------
2 mol FePO4           0.1326 mol FePO4

Solve for x:

x = (0.1326 / 2) * 1 mol Fe2(SO4)3 = 0.0663 mol Fe2(SO4)3

5) Convert 0.0663 mol Fe2(SO4)3 into grams

mass in grams = number of moles * molar mass

molar mass Fe2(SO4)3 = 399.88 g/mol

mass = 0.0663 mol * 399.88 g/mol = 26.51 g

Depending on the numbers of the decimal to digits used by one or otherwise you might obtained 26.52 instead 26.51, that's differences does not count.

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The concentration of volatile suspended solids (Xv) in the lagoon to assess the effluent quality. However, the specific aerator capacity needed cannot be determined without additional information or equations.

To determine if the industry will likely meet the desired effluent quality, we can calculate the BODL concentration in the aerated lagoon and the concentration of volatile suspended solids (Xv) in the lagoon.

BODL concentration in the aerated lagoon:

The BODL concentration in the lagoon can be calculated using the equation:

BODL_lagoon = BODL_influent - q * Xv * θ

where BODL_influent is the initial BODL concentration (2,000 mg/l), q is the specific oxygen utilization rate (27 mgBODL/mgVSSa-d), Xv is the concentration of volatile suspended solids (to be determined), and θ is the hydraulic retention time (1 day).

Concentration of volatile suspended solids (Xv) in the lagoon:

The concentration of volatile suspended solids can be calculated using the equation:

Xv = BODL_influent / (q * θ)

where BODL_influent is the initial BODL concentration (2,000 mg/l), q is the specific oxygen utilization rate (27 mgBODL/mgVSSa-d), and θ is the hydraulic retention time (1 day).

By substituting the given values into the equations, we can calculate the BODL concentration in the lagoon and the concentration of volatile suspended solids.

Regarding the aerator capacity needed, the question asks for the amount of aerator capacity in kW/1,000 m3 of tank volume. To calculate this, we need the field oxygen transfer efficiency (1 kgO2/kWh). However, the equation or method to determine the aerator capacity based on the given information is not provided. Without additional information or equations, it is not possible to calculate the specific aerator capacity needed in this scenario.

In summary, we can calculate the BODL concentration in the aerated lagoon and the concentration of volatile suspended solids (Xv) in the lagoon to assess the effluent quality. However, the specific aerator capacity needed cannot be determined without additional information or equations.

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The Lewis structure of ammonia (NH3) is represented as:  H        H        H      NH2e-                1                  2                  3                   4  +NH3: : : Each line between the atoms represents a covalent bond, and each pair of dots represents a lone pair of electrons.

The structure that is the Lewis structure for ammonia (NH3) is a trigonal pyramid. It is also considered as the central atom with three outer atoms. This is a type of covalent bond that is present in nitrogen and hydrogen atoms in the ammonia molecule.

The Lewis structure is based on the octet rule which states that an atom wants to have 8 electrons in their outermost shell (in some cases, 2 electrons in their outermost shell for hydrogen) to achieve stability. The Lewis structure also shows the arrangement of atoms and bonds in a molecule. It helps to predict the geometry of the molecule and understand its properties.

To draw the Lewis structure of ammonia (NH3), we first need to count the total number of valence electrons in the molecule. Nitrogen has five valence electrons, and each hydrogen atom has one valence electron. So the total number of valence electrons in NH3 is 5+3(1) = 8 electrons. The nitrogen atom in NH3 is the central atom that is surrounded by three hydrogen atoms.

Nitrogen shares its three valence electrons with the three hydrogen atoms to form three covalent bonds. This results in a total of six electrons being used up, with two left over.The two remaining electrons form a lone pair on the nitrogen atom. The lone pair is responsible for the trigonal pyramid shape of the molecule.

The Lewis structure of ammonia (NH3) is represented as:  H        H        H      NH2e-                1                  2                  3                   4  +NH3: : : Each line between the atoms represents a covalent bond, and each pair of dots represents a lone pair of electrons.

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Answer:

Arcuate: A fan-shaped delta, bowed or curved.

Cuspate: V-shaped delta.

Bird-foot: Outstretched claws delta

Inverted: The narrow end of delta, or river delta.

Waves: Large or regular shaped waves delta.

Tires: Round shaped delta

River estuary: A landform deposited by sediment

Explanation:

Answer:

C: 4

H: 1

Mg: 2

O : 6

Explanation:

You can quickly find out the number of valence electrons by looking at where the element is on the periodic table and referring to the table that is attached.

Answer:

0.75 atm

Explanation:

To convert from mmHg to atm, divide the value by 760.

570/760=0.7500 atm

Answer:

Some cells, such as the frog egg cells shown here, divide every 30 minutes, and others take as long as a year! The table below compares the length of different cell cycles. 2. With each cell cycle, two cells form from one cell.

After 3 hours, the number of cells formed from one frog egg cell has been 64.

The division of the frog cell occurs every 30 minutes. Thus in 3 hours, the number of divisions occurs:

30 minutes = 1 division

3 \(\times\) 60 minutes = \(\rm \dfrac{1}{30}\;\times\;180\)

= 6 divisions.

The number of cells formed after n divisions can be given by = \(\rm 2^n\)

where n is the number of division cycles.

The number of cells after 6 division cycles = \(\rm 2^6\)

The number of cells = 64.

After 3 hours, the number of cells formed from one frog egg cell has been 64.

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Brainly is erroneously blocking my answer from being posted due to nonexistent profanity and/or links, so I have attached an image of my written response. Please let me know if you have any problems seeing it.

True. SN2 reactions typically result in a product that has the same relative configuration as the starting material.

The SN2 reactions same relative configuration is  because the nucleophile attacks the carbon from the opposite side of the leaving group, leading to inversion of the stereochemistry.

A nucleophilic substitute in which the rate demanding step involve 2 components.

for example; oH cL

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Answer:

7 hours……….5 days……….36 weeks

————- X ————— X ———————

1 day…………..1 week…………..1 year 

how many hours per year does a high school student spend in school?

1260 hours per year

Explanation:

Answer:

7 hours...............5 school days.......36 school weeks

-------------------X-----------------------X---------------------------

1 school day......1 school week.......1 school weeks

1,260 hours per week

Explanation:

edge 2023

Answer:

Calculate he number of moles you have by taking the Mass / molar mass. if you have 1000 grams ; then 1,000 g / 151.001 g/mol = X g moles. Then multiply by Avogadros # = 6.022140857 × 10^23 molecules per g mole. The result is the # of molecules of MnSO4.

Explanation:

The correct option is D, considering thermodynamic versus kinetic control of organic reactions when a reaction is under kinetic control, the relative amounts of products depend on the relative stabilities of the transition states.

Thermodynamics is a branch of physics that deals with the study of the relationship between heat, energy, and work. It is concerned with the behavior of macroscopic systems, such as gases and liquids, and the effects of changes in their properties, such as temperature, pressure, and volume.

Thermodynamics is based on a set of fundamental laws that describe the behavior of energy and matter in systems. The first law, known as the law of conservation of energy, states that energy cannot be created or destroyed, only transferred or transformed from one form to another. The second law, known as the law of entropy, states that the entropy of a closed system always increases over time, leading to a natural tendency towards disorder and randomness.

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The type of reaction is a double replacement reaction. In a double replacement reaction, the positive ions of two compounds switch places to form two new compounds.

The balanced chemical equation for the reaction between magnesium and lead(II) nitrate is:

Mg(s) + Pb(NO3)2(aq) -> Mg(NO3)2(aq) + Pb(s)

In this equation, the magnesium and lead ions switch places to form the new compounds magnesium nitrate and lead. The coefficients in front of the compounds indicate the number of moles of that substance that are involved in the reaction. The subscripts indicate the number of atoms of each element in each compound.

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To find the solubility of AgCl in a solution of MsCl2, we need to use the common ion effect. MsCl2 will dissociate in water to form Ms+ and Cl- ions. The Cl- ions will combine with the Ag+ ions from the dissociation of AgCl to form more AgCl, which will reduce the solubility of AgCl.

The balanced equation for the dissociation of AgCl is:

AgCl(s) ⇌ Ag+(aq) + Cl-(aq)

The Ksp expression for this reaction is:

Ksp = [Ag+][Cl-]

We know that the Ksp of AgCl is 1.8 x 10^-10. Let's assume that x is the solubility of AgCl in the presence of MsCl2.

In the presence of MsCl2, the Cl- concentration will be [Cl-] = [Cl-]initial + [Cl-]dissociated = 2[Cl-]initial, where [Cl-]initial is the initial concentration of Cl- ions from MsCl2.

Since the Ag+ concentration is equal to the Cl- concentration in a saturated solution of AgCl, we can write:

Ksp = [Ag+]^2 = (2[Cl-]initial + x)^2

Solving for x, we get:

x = (-2[Cl-]initial ± √(4[Cl-]initial^2 + 4Ksp))/2

We can simplify this equation to:

x = (-[Cl-]initial ± √([Cl-]initial^2 + Ksp))/1

Substituting the values, we get:

x = (-[Cl-]initial ± √([Cl-]initial^2 + 1.8 x 10^-10))/1

Therefore, the solubility of AgCl in a solution of MsCl2 can be calculated using the above equation.

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Answer:

Explanation:

Electron affinity is a measure of the tendency of an atom to gain an electron. The more positive the electron affinity, the greater the tendency for the atom to gain an electron (this means that the negative ion formed after accepting the electron is very stable).

The overall trend is an increase in the tendency to accept electrons (electron affinity values become more positive) from left to right across a period, and from the bottom to the top across a group. The halogens (group 7A) have the highest electron affinity values.  That means that the halide ions are very stable.

As we can see from the atomic radii, the halogens are rather small atoms. Smaller atoms will attract additional electrons more easily since the incoming electrons (added on the outermost shell) will be closer to the nucleus, therefore the attraction will be stronger.

Answer:

This question is incomplete and unclear; the complete question including the missing part is:

Emelie is working on a science project. Her task is to answer the question:

"Does Rogooti (a hair cream sold on TV) affect the speed of hair growth

(in length)". Her family is willing to volunteer for the experiment. Identify the control group (CG) and the independent and dependent variables.

ANSWER:

Independent variable: Rogooti hair cream

Dependent variable: Speed of hair growth/length

Control group: Family members that do not use the Rogooti hair cream

Explanation:

In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable response. In this case, the ROGOOTI HAIR CREAM is the independent variable.

Dependent variable refers to the variable that is measured or the variable that responds to the change made to the independent variable. In this case, the dependent variable is SPEED AT WHICH HAIR GROWS (IN LENGTH).

Control group in an experiment is the group that does not receive the experimental treatment. In this case, the experimental treatment is the Rogooti hair cream, hence, the control group will be the VOLUNTEER FAMILY MEMBERS THAT DOES NOT RECEIVE THE ROGOOTI HAIR CREAM ON THEIR HAIR.

Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Answer:

Photosynthesis takes place in the chloroplasts of the plant!!

Explanation:

I hope this helps!

Answer:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Explanation: oh oh i know this!!!!

Answer:

Increases, higher

Explanation:

Remember that the formula for Density is D=mass/volume.

If volume remains the same, as mass increases the density will also increase as the numerator of this math problem increases while the denominator remains the same.

(a) At constant pressure and volume, the density of a gas increases as the molar mass increases.

(b) A gas made of heavier particles will have a greater density than a gas composed of lighter particles under the same conditions of temperature and pressure.

The relationship between density and molar mass is given in the following equations;

PV = nRT

PV = (m/M) RT

PV = (ρV/M)RT

P = (ρ/M)RT

P = (ρRT)/M

PM = ρRT

where;

Thus, we can conclude that, at constant pressure and volume, the density of a gas increases as the molar mass increases.

A gas made of heavier particles will have a greater density than a gas composed of lighter particles under the same conditions of temperature and pressure.

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After 10 seconds, 88 grams of unobtanium-31 are present, after 20 seconds, 44 grams are present, after 30 seconds, 22 grams are present, after 40 seconds, 11 grams are present, and after 50 seconds, 5.5 grams are present.

The amount of unobtanium-31 remaining after certain intervals of time, given that the half-life of the radioactive element is 10 seconds is calculated below.

Initial quantity of the element is given as 176 grams.  

After 10 seconds:

Let's first figure out the fraction of the sample remaining after each time period because the half-life of a radioactive element tells us the fraction that decays over a certain period of time.

Using the half-life equation:

amount remaining = original amount x (1/2)^(time elapsed / half-life)

After 10 seconds, the time elapsed is equal to the half-life of the element,

So:

amount remaining = 176 x (1/2)^(10/10)

                               = 88 grams

After 20 seconds:

amount remaining = 176 x (1/2)^(20/10)

                               = 44 grams

After 30 seconds:

amount remaining = 176 x (1/2)^(30/10)

                               = 22 grams

After 40 seconds:

amount remaining = 176 x (1/2)^(40/10)

                               = 11 grams

After 50 seconds:

amount remaining = 176 x (1/2)^(50/10)

                               = 5.5 grams

Therefore, after 10 seconds, 88 grams of unobtanium-31 are present, after 20 seconds, 44 grams are present, after 30 seconds, 22 grams are present, after 40 seconds, 11 grams are present, and after 50 seconds, 5.5 grams are present.

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Answer:

a.calcium

b.chlorine