A saturated solution of AgI has [Ag+]= 9.2×10−9 M and [I−]= 9.2×10−9 M.What is the value of Ksp for AgI?​

Answer:

the answer is temperature

Answer:

Medium and temperature.

Explanation:

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The subatomic particles protons and neutrons contribute to the mass of the atom.

This difference in the number of neutrons causes the mass of the atom to vary. For example, the most common form of carbon is Carbon-12, which has an atomic mass of 12 and contains 6 protons and 6 neutrons, while Carbon-14 has an atomic mass of 14 and contains 6 protons and 8 neutrons. The extra two neutrons make Carbon-14 slightly heavier than Carbon-12. The number of neutrons in an atom is determined by the number of protons and the element's atomic number, so when the number of neutrons changes, the mass of the atom changes as well. Isotopes can be naturally occurring or artificially created, and their properties may vary depending on the number of neutrons in the nucleus. Overall, isotopes are subatomic particles that cause the mass of the atom to change.

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6.94 is much more closet to 7.016, so Li 7 is more abundant

a) The molar mass of NH4ClO4 can be calculated by adding up the atomic masses of its constituent elements:

M(NH4ClO4) = (M(N) + 4 * M(H) + M(Cl) + 4 * M(O))

From the given atomic masses:

M(N) = 14.01 g/mol

M(H) = 1.008 g/mol

M(Cl) = 35.45 g/mol

M(O) = 16.00 g/mol

Plugging in these values:

M(NH4ClO4) = (14.01 + 4 * 1.008 + 35.45 + 4 * 16.00) g/mol

M(NH4ClO4) = 144.49 g/mol

The molar mass of NH4ClO4 is 144.49 g/mol.

(b) To determine the number of grams of oxygen (O) in 1.0 mol of NH4ClO4, we need to calculate the molar mass of oxygen in the compound.

The molar mass of O is 16.00 g/mol.

Since NH4ClO4 contains four oxygen atoms, the mass of oxygen in 1.0 mol of NH4ClO4 is:

Mass of O = 4 * M(O)

Mass of O = 4 * 16.00 g/mol

Mass of O = 64.00 g

There are 64.00 g of oxygen in 1.0 mol of NH4ClO4.

(c) (i) To balance the reaction equation for the electrolysis of aluminum oxide, we need an equal number of atoms on both sides of the equation.

The balanced equation is:

2Al2O3(l) + 3C(s) → 4Al(l) + 3CO2(g)

(ii) From the balanced equation, we can determine the stoichiometric ratio between the formation of aluminum and the production of CO2. According to the equation, 3 moles of CO2 are produced for every 2 moles of aluminum (Al).

Given that 8.00 kg of aluminum is produced in 1 hour, we can calculate the number of moles of aluminum produced using its molar mass:

M(Al) = 26.98 g/mol

Number of moles of Al = mass of Al / M(Al)

Number of moles of Al = 8000 g / 26.98 g/mol

Number of moles of Al = 296.81 mol

Using the stoichiometric ratio, we can calculate the number of moles of CO2 produced:

Number of moles of CO2 = (3/2) * Number of moles of Al

Number of moles of CO2 = (3/2) * 296.81 mol

Number of moles of CO2 = 445.22 mol

Now, we can use the ideal gas law to calculate the volume of CO2 produced under given conditions:

PV = nRT

Assuming P = 1.00 atm, T = 60.0 °C (convert to Kelvin: 60.0 + 273.15 = 333.15 K), and R = 0.0821 L·atm/(mol·K), we can rearrange the equation to solve for V (volume):

V = (n * R * T) / P

V = (445.22 mol * 0.0821 L·atm/(mol·K) * 333.15 K) / 1.00 atm

V ≈ 12,715.8 L

Approximately 12,715.8 liters of CO2 gas will be formed during this hour.

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Answer:

c

Explanation:

The commercial technology commonly uses plasma is a television. The correct option is c.

Commercial technology is any technology that is employed in the business world, including electric power, radio, television, phones, and other similar devices. These items are employed commercially in a variety of fields. An electrical gadget called television is used to watch entertainment.

Plasma is a substance found in televisions; these gas-filled pockets receive electricity to transform into plasma screens. The UV rays that these plasmas then emit create a picture as they pass through the phosphorus cells.

Thus, the correct option is c. a television, regarding a commercial technology that commonly uses plasmas.

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Answer:

"Protons only"

Explanation:

Hydrogen has one proton in its nucleus. It does have one electron rotating outside of the nucleus, BUT NOT IN THE NUCLEUS. 'A' is the correct answer.

In most crystalline metals, plastic deformations caused by loads greater than the yield stress are the result of dislocation motion.

The dislocation motion plays the important role in the plastic deformation. The plastic deformation occurs when a material will be stress. The resulting plastic deformation is the permanent change. this permanent change is cannot be recovered by the removing the the stress that caused the deformation. the plastic deformation caused by the dislocation motion. dislocation motion, atoms in metals to side readily.

Thus, the plastic deformations is caused by the dislocation motion. this plastic deformation is the permanent change and not be removed by the simply removing the stress.

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Answer:

what is ur question really

the pH of the given buffer solution is 3.08.

The given buffer solution is made up of 60 mL of 0.25 M HCOOH and 10.0 mL of 0.500 M NaXOOH and we are to determine its pH.

The first step in solving this problem is to determine the moles of each species in the buffer. This can be accomplished by using the following equation:

n(HCOOH) = 0.25 moles/L x 0.060 L = 0.015 moles of HCOOHn

(NaXOOH) = 0.500 moles/L x 0.010 L = 0.005 moles of NaXOOH

Next, we need to calculate the concentration of the buffer:

Concentration of buffer = moles of HCOOH / total volume of buffer= 0.015 moles / (0.060 + 0.010) L = 0.1875 M

Now that we have the concentration of the buffer, we can use the Henderson-Hasselbalch equation to determine the pH:

pH = pKa + log ([A-] / [HA])

where pKa = 3.75 for HCOOHpH = 3.75 + log [(0.005 moles / 0.070 L) / (0.015 moles / 0.070 L)]= 3.75 + log [0.07143 / 0.21428]= 3.75 + (-0.6706)= 3.08

Therefore, the pH of the given buffer solution is 3.08.

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To determine the molar masses of Mg and Fe, we can use the ratios given in the problem.

Let the mass of oxygen be x. Then, the mass of magnesium in the simplest compound of magnesium and oxygen is approximately 1.5x. This means that the total mass of the compound is approximately 2.5x (since there is only one oxygen atom in the compound). The molar mass of Mg is then:

Molar mass of Mg = (2.5x) / n

where n is the number of moles of Mg in the compound. Since there is only one Mg atom in the compound, n = 1. Therefore:

Molar mass of Mg = 2.5x

Similarly, let the mass of oxygen be y. Then, the mass of iron in the simplest oxide of iron is approximately 3.5y. This means that the total mass of the oxide is approximately 4.5y (since there is only one oxygen atom in the oxide). The molar mass of Fe is then:

Molar mass of Fe = (4.5y) / m

where m is the number of moles of Fe in the oxide. Since there is only one Fe atom in the oxide, m = 1. Therefore:

Molar mass of Fe = 4.5y

To compare these values with the accepted molar masses of Mg and Fe, we can look up their values in the periodic table. The accepted molar mass of Mg is 24.31 g/mol, and the accepted molar mass of Fe is 55.85 g/mol.

Using the ratios given in the problem, we have:

Molar mass of Mg = 2.5x

Molar mass of Fe = 4.5y

We don't have any information about the values of x and y, so we can't directly compare these expressions with the accepted molar masses of Mg and Fe. However, we can make some observations based on the ratios given in the problem.

The ratio of the molar mass of Mg to the accepted molar mass of Mg is:

(Molar mass of Mg) / (Accepted molar mass of Mg) = (2.5x) / 24.31

The ratio of the molar mass of Fe to the accepted molar mass of Fe is:

(Molar mass of Fe) / (Accepted molar mass of Fe) = (4.5y) / 55.85

We can simplify these expressions by finding the values of x and y in terms of the molar masses of Mg and Fe:

x = (24.31 / 2.5) * (Molar mass of Mg)

y = (55.85 / 4.5) * (Molar mass of Fe)

Substituting these values into the expressions above, we get:

(Molar mass of Mg) / (Accepted molar mass of Mg) = 0.1027 * (Molar mass of Mg)

(Molar mass of Fe) / (Accepted molar mass of Fe) = 0.2505 * (Molar mass of Fe)

From these expressions, we can see that the ratio of the molar mass of Mg to the accepted molar mass of Mg is proportional to the molar mass of Mg, and the same is true for Fe. This means that the values we obtained for the molar masses of Mg and Fe are simply scaled versions of the accepted molar masses, with scaling factors of approximately 0.1027 and 0.2505, respectively.

The reason for these scaling factors is that the ratios given in the problem are only approximate.

Answer:

29

Explanation:

since protons are a constant and unique characteristic of an element it's considered as he atomic number of that element.

The balanced equation for the reaction between hydrazine (N2H4) and copper(II) hydroxide (Cu(OH)2) in basic conditions is as follows:

N2H4 + 2Cu(OH)2 -> N2 + 4H2O + 2Cu

In this reaction, hydrazine reacts with copper(II) hydroxide to produce nitrogen gas (N2), water (H2O), and copper metal (Cu). The equation is balanced with respect to both mass and charge.

Please note that the phases of the reactants and products are not explicitly specified in the balanced equation, but you can assume that N2H4 is a liquid and Cu(OH)2 is a solid.

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In a primitive cubic arrangement, each unit cell contains one composite atom.

Here's a step-by-step explanation:

1. In a primitive cubic arrangement, there is one atom at each corner of the unit cell.
2. Each corner atom is shared by 8 adjacent unit cells.
3. Therefore, the contribution of each corner atom to a single unit cell is 1/8 (since it is shared by 8 cells).
4. Since there are 8 corner atoms in total, their combined contribution to a single unit cell is 8 * (1/8) = 1 composite atom.

So, there is 1 composite atom contained in a unit cell of a primitive cubic arrangement.

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A reaction to be spontaneous,overall cell potential must be positive.

(A)The metabolite which would spontaneously reduce oxaloacetate (OAA) is:

alpha-ketoglutarate

(B)The two half cell reactions are as follows:

Reduction half reaction:

Oxaloacetate + 2 H+ + 2 e- --> malate

Oxidation half reaction:

alpha-ketoglutarate --> Succinate + CO2 + 2 H+ + 2 e-

Overall resulting balanced reaction for the reduction of OAA :

Oxaloacetate +alpha-ketoglutarate --> malate + Succinate + CO2

(C)the standard reduction potential for the reaction chosen in (B):

+0.67-0.17 = +0.50 V

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What happens to the state of liquid water if enough heat is added?

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The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

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The entropy of a substance is related to the number of ways its molecules can arrange themselves in a given volume and energy state. In the case of HCl, the molecule has more degrees of freedom than Ar because it can rotate and vibrate in addition to translating in space. This means that there are more ways that HCl molecules can be arranged in a given volume and energy state compared to Ar, which only has translational motion. As a result, HCl has a higher entropy than Ar.

HCl has a higher entropy than Ar because HCl is a diatomic molecule while Ar is a monatomic gas. In a diatomic molecule like HCl, there are more degrees of freedom, including translational, rotational, and vibrational motions, leading to more possible microstates and thus higher entropy. In contrast, Ar, being a monatomic gas, has fewer degrees of freedom (only translational), resulting in lower entropy.

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Gay-Law Lussac's states that, for a gas with a fixed volume and number of moles, pressure is directly proportional to temperature.

The pressure exerted by the argon gas  at 60c is 0.46atm

Define pressure?

Pressure is defined as the force applied perpendicular to an object's surface per unit area across which that force is dispersed. Gauge pressure (sometimes written gauge pressure) is the pressure in relation to the surrounding atmosphere.

p is proportional to t.

p1xt1=p2xt2

where,

p1 = 0.85 atm

p2 = ?

t1 = 20c

t2 = 60c

t1=20c= (200 +275=475k)

t2=60c =(600+275=875k)

p2 =0.85x473/873

=0.4605atm

Therefore, the pressure of the gas at 60c will be 0.46atm.

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Answer:

114

Explanation:

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The given statement "The molar enthalpy of sublimation of a given substance can be determined if its enthalpies of fusion and vaporization are known" is true.

The molar enthalpy of sublimation of a substance can be determined if its enthalpies of fusion (melting) and vaporization (boiling) are known. The enthalpy of sublimation refers to the energy required to change a substance from the solid phase directly to the gaseous phase, bypassing the liquid phase.

The enthalpy change during sublimation can be calculated by considering the enthalpies of fusion and vaporization. When a substance undergoes sublimation, it first requires energy to melt from the solid phase to the liquid phase (enthalpy of fusion) and then additional energy to vaporize from the liquid phase to the gaseous phase (enthalpy of vaporization). The sum of these two enthalpies represents the overall energy change during sublimation.

Therefore, by adding the enthalpy of fusion and the enthalpy of vaporization, one can determine the molar enthalpy of sublimation for a given substance.

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3 moles of NaOH required to make 1 mole of  Na3PO4 in the given reaction.

H3PO4(aq) + 3NaOH(aq) ⇄ Na3PO4 (aq) + 3H20

Quantifying the quantity of a material is made easier with the aid of the mole concept. It is understood that even a single gram of a pure element has a sizable number of atoms when dealing with particles at the atomic (or molecular) level. In this regard, the mole notion is frequently utilized. The "mole," which is a count of a large number of particles, is the most commonly used unit of measurement.

The letter "NA" is often used to indicate the value 6.02214076*10^23, commonly known as the Avogadro constant. Atoms, molecules, monoatomic and polyatomic ions, as well as other particles, are among the elementary things that may be represented in moles (such as electrons).

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Gravity is a (n) force between objects and depends on an object's size and their distance apart.

Gravitational force is the attractive that exist between all object with mass an object with mass attracts another object with mass the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects

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Answer:

Noble gases are called "safe" gases because they are inert.

General Formulas and Concepts:

Explanation:

Because Noble Gases have filled their outer shell electrons fully, they tend not to form compounds with other elements or react with others to produce another compound.

Take Ne (neon) for instance. It's electron configuration is 1s²2s²2p⁶. The outer most shell is the 2p sublevel, and according quantum numbers, the 2p sublevel only has 3 spaces for 2 electrons each that it can hold. Therefore, Ne has a full outer shell and no electron spots to create a bond with other elements.

Answer:

C. the substance in which the solute dissolves

Explanation:

There are two terms in this... the solute and the solvent. The way I learned how to remember this is with a little pirate analogy: The loot (stolen treasure) always goes in the vent. So, the soLUTE goes in the solVENT.

Answer:

those things that looks like cristals

Answer:

b: Hot

a: Cold

c: Cold

d: Warm

e: Warm

f: Cold

g: Hot

Explanation:

:)

Answer:

Urea contains more nitrogen

Explanation:

1 mole of Urea contains 2 moles of Nitrogen and 1 mole of ammonium sulfate contains, also, 2 moles of nitrogen.

60g of urea (Molar mass: 60g/mol) contains:

60g × (1mol / 60g) = 1 mole. As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 2.

100g of ammonium sulfate (Molar mass: 132g/mol) contains:

100g × (1mol / 132g) = 0.758 moles.

As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 0.758×2 = 1.516 moles.

That means, urea contains more nitrogen.