Balance this equation pls

__NaCl + __CaF2→ __NaF +__CaCl2

The position in extremity from most to least is water, ethanol, ethyl acetic acid derivation, CH3)2CO, 2-butanone, diethyl ether, hexane, and benzene.

From these solvents, ethanol will be totally miscible in water because of its more modest carbon fasten and it's capacity to frame hydrogen bonds.

Water is a polar dissolvable; other polar solvents incorporate CH3)2CO, acetonitrile, dimethylformamide (DMF), dimethylsulfoxide (DMSO), isopropanol, and methanol.

One way you could really work out a dissolvable's extremity is by utilizing its dielectric consistency, which is utilized to quantify how well the dissolvable can part of the way drop the field strength of the electric field of a molecule added to it. The higher the worth of a dissolvable's dielectric consistent, the more polar it will be.

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Answer:

1. B

2.C

3.D

4.Sorry don't this one :(

5.A

Explanation:

please give me at least 20 points ❤

A protein mixture is commonly applied to a HIC column under high salt conditions, and the protein of interest is eluted with a buffer of decreasing ionic strength.

Structured salts added to the equilibration buffer and sample promote ligand-protein interactions in HIC. The amount of bound protein decreases as the salt concentration decreases, as does the risk of protein precipitation at lower ionic strength.

Despite the fact that sodium, potassium, or ammonium sulfates have a higher precipitation effect, these salts effectively promote ligand-protein interactions in HIC. Most bound proteins are eluted by washing with water or a dilute buffer with a pH close to neutral.

What exactly is HIC?

Hydrophobic interaction chromatography (HIC) is a technique used to separate molecules based on their hydrophobicity. HIC is a useful separation technique for purifying proteins while retaining biological activity due to the use of less denaturing conditions and matrices.

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The metal is (b) less active than aluminum but more active than tin

The metal strip has a greater activity than aluminum but a lower activity than tin. This is due to the fact that the metal strip developed a tin coating after being submerged in a tin (II) nitrate solution, which shows that tin ions in the solution were reduced and deposited onto the metal surface. The metal strip may be more reactive than tin, according to this.

However, there was no discernible reaction when the metal strip was submerged in an aluminum sulfate solution. This suggests that the metal strip is less reactive than aluminum because aluminum ions in the solution were not reduced or deposited onto it.

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The binding energy of silver-109 (Ag-109) in kJ/mol nucleons is not a well-defined concept, as binding energy is typically calculated for atomic nuclei rather than individual isotopes.

The binding energy of an atomic nucleus is the energy required to completely separate all of its constituent protons and neutrons into individual particles. It is usually expressed in units of energy per nucleon, which is the energy required to separate one proton or neutron from the nucleus.

The average binding energy per nucleon for an atomic nucleus is typically highest for medium-mass nuclei, such as those found in the region of the so-called "valley of stability" on the nuclear chart.

The binding energy per nucleon for silver-109 is not likely to be particularly high, as silver is a relatively heavy element and the binding energy per nucleon tends to decrease with increasing atomic number (Z).

Without more information about the specific calculation being used to determine the binding energy of Ag-109, it is not possible to accurately provide a value for the binding energy in kJ/mol nucleons.

The required masses (g/mol) are also not specified in the question, so it is not clear what context these values might be used in.

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Modelling of block copolymers produces porous nanostructured carbons with easily accessible nitrogen, improving their chemical (electrical) performance for catalytic and energy storage applications.

Mass copolymer modelling refers to a method of creating porous nanostructured carbon atoms with easily accessible nitrogen, thereby improving their chemical (electrical) performance. In this process, a bulk copolymer is used as a template, guiding the formation of carbon materials with specific pore structures.

The resulting porous carbon material provides a high surface area and exposes nitrogen atoms that can participate in various chemical reactions, making the material advantageous for applications such as storage devices. energy storage or catalyst.

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Answer:

2.7

Explanation:

The sample prepared by dissolving 10.0 grams of NaCl in 1.0 liter of H₂O is a homogeneous mixture, which is described by option (2).

A homogeneous mixture is a mixture that has a uniform composition and properties throughout the sample. In this case, the NaCl molecules have been completely dissolved in the water molecules, resulting in a clear, colorless solution.

The NaCl and water molecules are distributed evenly throughout the sample, and the composition and properties of the solution are uniform in all parts of the sample. As a result, the sample is a homogeneous mixture.

Option (1) cannot be correct because NaCl and H₂O are two distinct compounds that have different properties and characteristics. Therefore, they cannot form a single homogeneous compound.

Option (3) cannot be correct because a compound is a substance composed of two or more different elements that are chemically combined in a fixed ratio. NaCl is a compound, but H₂O is also a compound, and they cannot chemically combine to form a heterogeneous compound.

Option (4) cannot be correct because a heterogeneous mixture is a mixture that is not uniform in composition and properties throughout the sample. This is not the case for the NaCl and H₂O solution, which is a homogeneous mixture.

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the score by the sociology professor was -1.54

what is sociology ?

Sociology is a social science that studies society, human social behaviour, patterns of social interactions, social interaction, and cultural elements of daily life. It employs a variety of empirical inquiry and critical analysis techniques. 3-5 to build a foundation of knowledge on social order and social change 32–40 While some sociologists perform research that may be immediately applied to social policy and welfare, others are primarily concerned with improving theoretical knowledge of social processes and the phenomenological approach. The topics covered might range from micro-level studies of society (i.e., individual interaction and agency) to macro-level assessments of society (i.e. of social systems and social structure).

the mean (m) is = 35.3,

standard deviation = 8.6

P x <22

z = (x - m) / sd

We have all these values, replacing we have:

z = (22 - 35.3) / (8.6)

z = -1.54

22 score to z-score is -1.54

therefore the score was 22 score to z-score is -1.54

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Answer:

3

Explanation:

Collect like terms and divide by the coefficient of k

Answer:

3k + 9 = 18, find k, k is equal to 3

Explanation:

3k + 9 = 18, k = 3

3(3) + 9 = 18

3x3 is 9

9 + 9 = 18

therefore, k is 3

Answer:

ok so im gonna go and do some for your latest questions then if thats alright with you

Explanation:

i need points so im trying to help as many people as i can before the end of the day.

but you have to make the questions forst so i can help you understand them

Answer:

Option 1, Soil erosion

Non-heme iron is found in some foods that provide all the amino acids humans require for the absorption of iron.

Amino acids are defined as the substances which are considered to be the monomers of proteins.Every amino acid has the same structure  which consists  of a central carbon  bonded to an amino group , carboxyl group and a hydrogen.

Each amino acid also has  an another atom or a group of atoms bonded to the alpha carbon which are also known as the R group or the variable group of the side chain.There are 20 common amino acids which are  present in natural proteins and each amino acid has the same backbone.

The sequence and number of amino acids determines protein's shape,size and also its function. Each amino acid is attached to the other by a covalent bond formed by a dehydration reaction.

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Answer:

What you need is a thermometer and a clock.

Explanation:

Answer:

because its hard as a rock, rn

Explanation:

Answer:

well you can cook it how ever long you want but many people cook is slow

Explanation:

4.585 mol of Z would be in a sample that contained 0.656 mol X.

Given; The sample of compound contains;0.344 mol X3.096 mol Y2.408 mol Z

To find:Simplest formula of a compound

Step 1: Find the moles of each element by dividing it with its atomic mass

A = 0.344/1.0 = 0.344

B = 3.096/1.0 = 3.096

C = 2.408/1.0 = 2.408

Step 2: Calculate the mole ratio by dividing the smallest number of moles by itself

A = 0.344/0.344 = 1

B = 3.096/0.344 = 9

C = 2.408/0.344 = 7

Therefore, the simplest ratio of the compound is;

A : B : C = 1 : 9 : 7

Multiply by the common factor (9) = 9 : 81 : 63

Divide by the greatest common factor (9) = 1 : 9 : 7

Thus, the simplest formula of the compound is AX9BY7

C.Now, we have to find the moles of Z if the compound contains 0.656 mol X.

According to the given data, 0.344 mol of X requires 2.408 mol of Z

Therefore, 0.656 mol of X requires mole of Z;0.656 mol

X = (2.408 mol Z/0.344 mol X) x 0.656 mol

X= 4.585 mol Z

Therefore, 4.585 mol of Z would be in a sample that contained 0.656 mol X.

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The percent yield of oxygen if 10.2 g of O₂ is produced from the decomposition of 17.0 g of H₂O is 67.6%.

Moles (n) of any substance can be calculated by using their mass as:

n = W/M, where

W = given mass

M = molar mass

Given chemical reaction is:

2H₂O → 2H₂ + O₂

Moles of 17g H₂O = 17g / 18.02 g/mol = 0.943 moles

From the stoichiometry of the reaction it is clear that,

2 moles of H₂O = produces 1 mole of O₂

0.943 moles of H₂O = produces 1/2×0.943=0.471 mole of O₂

Now mass of this 0.471 moles of O₂ = (0.472mol)(32g/mol) = 15.104 grams

Actual mass of oxygen = 10.2g (given)

Now on putting vales on the percent yield formula, we get

% yield = (10.2 / 15.104)×100% = 67.53% = 67.6%

Hence the required value of percent yield is 67.6%.

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Answer:67.6

Explanation:bc im just that good

The molecular formula of the unknown compound is C2H2O2.

To determine the molecular formula of the unknown compound, we need to calculate the empirical formula first and then find the multiple of its subscripts to obtain the molecular formula.

Given:

Percentage of carbon = 40.0%

Percentage of hydrogen = 6.7%

Percentage of oxygen = 53.3%

Molecular mass = 60.0 g/mol

Step 1: Convert the percentages to grams.

Assuming we have 100 grams of the compound:

Mass of carbon = 40.0 g

Mass of hydrogen = 6.7 g

Mass of oxygen = 53.3 g

Step 2: Convert the masses to moles using the molar masses of the elements.

Molar mass of carbon = 12.01 g/mol

Molar mass of hydrogen = 1.008 g/mol

Molar mass of oxygen = 16.00 g/mol

Number of moles of carbon = Mass of carbon / Molar mass of carbon

= 40.0 g / 12.01 g/mol

= 3.332 mol

Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen

= 6.7 g / 1.008 g/mol

= 6.648 mol

Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen

= 53.3 g / 16.00 g/mol

= 3.331 mol

Step 3: Determine the empirical formula by dividing the moles by the smallest value.

Dividing the moles of carbon, hydrogen, and oxygen by 3.331 gives approximately 1 for each element.

So, the empirical formula of the compound is CHO.

Step 4: Determine the multiple of the subscripts to obtain the molecular formula.

To find the multiple, we divide the molecular mass by the empirical formula mass.

Molecular mass = 60.0 g/mol

Empirical formula mass = (12.01 g/mol) + (1.008 g/mol) + (16.00 g/mol) = 29.018 g/mol

Multiple = Molecular mass / Empirical formula mass

= 60.0 g/mol / 29.018 g/mol

= 2.07

Rounding to the nearest whole number, we get 2.

Therefore, the molecular formula of the unknown compound is C2H2O2.

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Answer:

2Fe + 3Cl_2 → 2FeCl 3

Explanation:

To balance the equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation. In this case, we have two iron atoms and six chlorine atoms on the left-hand side, and two iron atoms and six chlorine atoms on the right-hand side. To balance the equation, we can add a coefficient of 2 in front of FeCl3 to get:

2Fe + 3Cl_2 → 2FeCl 3

Now we have two iron atoms and six chlorine atoms on both sides of the equation, and the equation is balanced.

Answer:

11) True

12) True

13) False

14)False

15) True

Explanation:

Hope this helps!

Have a nice day! :D

Answer:

They have the same mass but different electrical charges.

Explanation:

Protons have a positive charge while neutrons have a neutral charge. Although they have different charges, they have the same amount of mass.

The protons and neutrons have the same mass but different electrical charges. THerefore, option (D) is correct.

A proton is described as a stable subatomic particle, a chemical symbol with +1e elementary charge. The mass of the proton is approximately equal to the mass of the neutron but 1836 times the mass of an electron.

Protons and neutrons are jointly together termed "nucleons" each with masses of approximately one atomic mass unit (a.m.u.). There will be one or more than one proton present in the nucleus of an atom. There is an attractive electrostatic central force that holds the atomic electrons.

The number of protons in the atom is referred to as the atomic number and is expressed by the symbol Z. Since each element in the periodic table has a unique number of protons, determines the chemical characteristics of the element.

As the neutrons present in the nucleus of an atom are neutral and do not carry any charge while the protons are positively charged.

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In chemistry, a catalyst is any substance that accelerates a reaction without being consumed. Enzymes are contains natural catalysts that are responsible for many important biochemical reactions.

Just about all solid catalysts are steels or their oxides, sulfides, and halides, as well as the semimetallic components boron, aluminum, and silicon. Gaseous and liquid catalysts were also commonly for use in their pure or in conjunction with suitable carriers but rather solvents.

Solid catalysts are widely diffused in other substances known as photocatalysts. In general, a toxic effect is a reaction between a catalyst and a reactant that produces chemical intermediates capable of reacting more readily between themselves or with another reactant to produce the desired end product.

The precursor is regenerated during the reactions between the precursors and the reactants. The modes of reaction between catalysts and the heterogeneous catalysts vary greatly and are frequently complex in solid catalysts.

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The value of Ksp for this salt is 8.26 x 10^-33.

The value of Ksp for this salt can be calculated by using the equation: Ksp = [Hg2+]²[Br-]².

Since we are given the concentration of Hg2+ in the solution, we can plug this value into the equation to find the value of Ksp.

Ksp = (2/44 x 10^-8)²[Br-]²

Next, we need to find the concentration of Br- in the solution. Since the formula of the salt is Hg2Br2, we know that there are two moles of Br- for every one mole of Hg2+.

Therefore, the concentration of Br- in the solution is twice the concentration of Hg2+.

[Br-] = 2 x (2/44 x 10^-8) = 4/44 x 10^-8

Now we can plug this value back into the equation for Ksp and solve for Ksp.

Ksp = (2/44 x 10^-8)²(4/44 x 10^-8)²

= 16/1936 x 10^-32

= 8.26 x 10^-33

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Answer:

Q = 90,000 J

Explanation:

Given data:

Mass skillet = 2000 g

Specific heat capacity = 0.450 J/g.°C

Energy required to raise temperature = ?

Initial temperature = 25°C

Final temperature = 125°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 125°C - 25°C

ΔT = 100°C

Q = 2000 g × 0.450 J/g.°C × 100°C

Q = 90,000 J

Answer:

14.52%

Explanation:

The percentage by mass (WW%) is calculated by using the formula:

Mass of solute/mass of solution ×

100

The solute (Al) is 22.5g while the solvent (Al2O3) is 155g

Hence, percent by mass is:

22.5/155 × 100

= 0.1452 × 100

= 14.52%

INFORMATION:

We know that:

- An automobile airbag inflates when NaN3 is converted to Na and N2 gas according to the equation,

2NaN3 → 2 Na + 3 N2.

And we must find the volume in (L) of N2 if 143 g of NaN3 completely reacted at STP

STEP BY STEP EXPLANATION:

To find it, we need to work with the conditions as an ideal gas.

The ideal gas equation is

1. We must find n:

To find n, we must first divide the 143 g of NaN3 by the molar mass

So, we have 2.2 mol of NaN3

Now to find n, we must multiply the number of mol of NaN3 by the relation between NaN3 and N2

Then, n = 3.3 mol

2. using STP conditions:

- T = 273K

- P = 760 torr

And using R = 62.36 (L*torr)/(K*mol)

Finally, replacing in the ideal gas equation solver for V

So, 73.92 L of N2 would be produced if 143 g of NaN3 completely reacted at STP.

ANSWER:

73.92 L

Answer:

Usually have a low relief, can be interior, and can be coastal.- are phrases that describe typical features of plains.

The phrase describes a typical feature of plains can be interior.

The art as well as the science of improving the interior of the building to provide a healthier as well as more aesthetically pleasing environment for  people who use it is known as interior design.

Plains are known for their low relief, interior location, as well as coastal location, all of which are characteristics of plains.

Therefore, The phrase describes a typical feature of plains can be interior.

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Answer:

- few nutrients

- low temperatures

-very little sunlight

Explanation:

Answer:

I think it's: located near coasts.

Answer:

C

Explanation:

i took the test

The temperate climatic zone has hot summers, cold winters, and average amounts of precipitation throughout the year. Thus, option C is correct.

The climatic zone may be defined as a world area or part discerned from a neighbor by a significant physical climatic attribute that is of a transnational scale.

The movement of the sun from the tropic of cancer to the tropic of Capricorn determines the climate of a particular zone. The equator zone is more consistent with climatic attributes. The tropical zone has seasonal climatic attributes.  

Therefore, the correct option is C.

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