arrange the following elements in order of increasing electronegativity: tin, iodine, tellurium, antimony

Answer:

As temperature increases so does evaporation rate, as temperature decreases evaporation rate does aswell.

Evaporation rates are higher at higher temperatures because as temperature increases, the amount of energy necessary for evaporation decreases.

good luck, i hope this helps :)

A balanced equation obey the law of conservation of mass. According to this law, the mass can neither be created nor be destroyed but it can be converted from one form to another. A skeleton equation is the balanced equation.

A chemical equation in which the number of atoms of reactants and products are equal on both sides of the equation is defined as the balanced equation. The numbers which are used to balance the chemical equation are called the coefficients.

The skeleton equation between diatomic oxygen and  iron (III) oxide is:

4Fe (g) + 3O₂ (g) → 2Fe₂O₃ (g)

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The chemical reaction of the formation of hydrogen iodide is given:

H2(g) + I2(g) = 2HI (g)

As you can see from the equation, only 1 mole of hydrogen and 1 mole of iodine react to form 2 moles of hydrogen iodide

Answer:

They are formed by windblown sand collecting around an obstruction. As organic matter is deposited by wind and waves, low herbs colonize the dune. As these plants collect more sand and organic matter, the dune increases in height becoming the fore dune.

Catecholamines undergo conjugation with sulfate or glucuronide in phase II reactions.

In these reactions, the catechol group (-OH and -OH in adjacent carbon atoms) is usually targeted for conjugation. Catecholamines include neurotransmitters such as dopamine, norepinephrine, and epinephrine, which play essential roles in the sympathetic nervous system and stress responses. By conjugating with sulfate or glucuronide, the body can inactivate catecholamines and excrete them in urine, bile, or feces. This is an important step in maintaining the proper balance of these neurotransmitters in the body.

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Answer:

0.00944

Explanation:

Xenon mass number on the periodic table: 131.29

Oxygen mass number: 16.00

Add them to find the molar mass of xenon trioxide: 131.29+3(16) = 179.29g/mol

Convert this to moles

\(1.69g * \frac{mol}{179.29g} = 0.00944mol\)

The pressure of the sample of gas is 0.981 atm that occupies a volume of 2.34 liters.

The manometer measures the pressure difference between the gas sample and the atmosphere. The height difference of mercury in the two arms of the manometer is 24.3 torr. Since the atmospheric pressure is 1.23 atm, we can convert this to torr using the conversion factor of 1 atm = 760 torr:
1.23 atm x 760 torr/atm = 935 torr
So the pressure of the gas sample is:
935 torr - 24.3 torr = 910.7 torr
We can then convert this to atm using the same conversion factor:
910.7 torr x 1 atm/760 torr = 1.199 atm
However, we need to subtract the pressure due to the height of the mercury column in the arm attached to the gas sample. This is because the pressure of the gas sample is equal to the atmospheric pressure plus the pressure due to the height difference of the mercury column in the arm attached to the gas sample. The pressure due to the height of the mercury column is:
24.3 torr x 1 atm/760 torr = 0.032 atm
So the pressure of the gas sample is:
1.199 atm - 0.032 atm = 1.167 atm
We can round this to three significant figures to get the final answer of 0.981 atm.
Therefore, the pressure of the sample of gas is 0.981 atm.

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Answer: Galena

Explanation:

(A). Galena

An unidentified mineral that is softer than calcite, exhibits a metallic luster and cubic cleavage. This mineral most likely is galena.

Talc, Gypsum, Calcite, Fluorite, Apatite, Feldspar, Quartz, Topaz, Corundum, and Diamond are just a few examples. - The "Mohs Scale of Mineral Hardness" lists common minerals in order of relative hardness, with talc being the softest and diamond being the hardest mineral. This scale should be familiar to rock hounds and earth science students alike.

When newly broken, galena is a metallic lead grey with a brilliant metallic shine; as it ages, it turns dark grey or black. It is incredibly hefty and fragile (about 7.6 times as heavy as water). Galena often crystallizes in cubic crystals and cleaves into flawless cubic pieces.

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Answer:

Atoms, and chemical make up

Explanation:

Our bodies and any other terrestrial body are formed with atoms, those same atoms from a chemical make-up that creates items, such as water with 2 hydrogen atoms and 1 oxygen atom is formed. In essence, we all are about atoms and chemical makeup is the instruction on how to build us

Answer:

Amoeba: reproduces

clock: lacks genetic material

both: has defined boundary, use energy, and have an internalized organization.

Explanation:

Amoeba is a single cell organism known as amoeboid which is a eukaryotic cell and has all the eukaryotic features such as membrane-bound organelles including the nucleus. The nucleus contains the genetic material of the amoeba cells and which is transferred to the offspring by reproduction. The cell membrane is the outer boundary of the cell use energy to perform its cellular functions.

A clock is a non-living thing that contains many small parts to make it work properly and requires energy to work. It is not a living thing so does not have genetic material. However, it has a defined boundary in it.

2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)

We have this reaction in a cylinder and also have 300 K. We are going to make some assumptions about these gases inside the cylinder: gases are ideal.

Then we will use this formula:

p = pressure in the cylinder

V = volume

n = moles

R = gas constant

T = temperature

Procedure:

1) We must calculate first how many moles we have after the decomposition of Pb(NO3)2, I mean how many moles of NO2(g) and O2(g) we have.

Note: PbO (s) takes up negligible volume (read the text please)

Let's calculate how many moles of Pb(NO3)2 is heated:

Moles Pb(NO3)2 = mass / molecular weight = 3.31 g / 331 g/mol = 0.01 moles

Using the reaction and stoichiometry we will calculate moles for NO2 and O2:

For NO2) 2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)

2 moles Pb(NO3)2 --------- 4 moles NO2

0.01 moles Pb(NO3)2---------- x = 0.02 moles NO2

For O2) 2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)

2 moles Pb(NO3)2----------- 1 mol O2

0.01 Pb(NO3)2 ------------ y = 0.005 moles O2

------------------------------------------------------------------------------------------------------

2) Inside the cylinder we have:

Total moles = moles NO2 + moles O2 = 0.02 + 0.005 = 0.025 moles

--------------------------------------------------------------------------------------------------------

3) Using Ideal gas law and clearing the pressure:

V = 1.62 L

n = 0.025 moles

T = 300 K

R = 0.0820 atm x L / mol x K

Answer: a) 0.380 atm

To determine the pKb1 of CO32-, we can use the relationship between pKa and pKb for conjugate acid-base pairs:

pKa + pKb = pKw

where pKw is the ionization constant of water, which is approximately 14. Therefore, we can rearrange the equation to solve for pKb:

The pKb value represents the negative logarithm of the equilibrium constant (Kb) for the reaction of a base with water. In this case, we are interested in the equilibrium reaction between CO32- and water, which can be represented as CO32- + H2O ⇌ HCO3- + OH-.

By utilizing the relationship pKa + pKb = pKw, we can rearrange the equation to solve for pKb. Given that pKa1 of H2CO3 is 6.35, we subtract this value from pKw (approximately 14) to obtain pKb1

pKb = pKw - pKa

pKb1 = 14 - 6.35 = 7.65

Since none of the given answer choices matches the calculated value, it seems there might be an error or omission in the available options. Please double-check the answer choices provided or refer to additional information to obtain the correct pKb1 value for CO32-.

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Yes, molecules can have permanent electric dipole moments if they contain polar bonds, or if they contain lone pairs of electrons that create a dipole moment.

The molecules below could have a permanent electric dipole moment depending on the relative arrangement of the atoms and their lone pairs of electrons.

a) CF4 has no permanent electric dipole moment as it has a tetrahedral geometry and the bond polarity vector cancel each other out.

b) H2S has a permanent electric dipole moment as it is a polar molecule. The electronegativity of sulfur is greater than that of hydrogen. As a result, the electron pair is displaced toward the sulfur atom. As a result, the molecule has a net dipole moment.

c) CH2Cl2 has a permanent electric dipole moment as it is a polar molecule. The polarity of the bond is determined by the difference in electronegativity. The bond dipoles are not balanced due to the asymmetrical shape of the molecule. As a result, the molecule has a net dipole moment.

d) CO2 has no permanent electric dipole moment as it is a linear molecule with two polar bonds. The direction of each dipole moment is the same, but they cancel each other out as they are opposite in direction.

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Answer:

ΔG°rxn = 28.4kJ/mol at 600K

Explanation:

Using Hess's law, you can find the ΔH°rxn and S°  subtracting ΔH°f of products - ΔH°f of reactants ×its coefficients. In the same way for S°rxn

For example, for the reaction:

aA + bB → cC:

ΔH°rxn = c×ΔH°fC - (a×ΔH°fA + b×ΔH°fB).

S°rxn = c×S°fC - (a×S°fA + b×S°fB).

For the reaction:

SO₂(g) + Cl₂(g) → SO₂Cl₂(g)

ΔH°rxn = 1×ΔH°f{SO₂Cl₂} - (1×ΔH°fSO₂ + 1×ΔH°fCl₂).

S°rxn = 1×S°f{SO₂Cl₂} - (1×S°fSO₂ + 1×S°fCl₂).

As at 298K:

ΔH°f{SO₂Cl₂} = -364.0kJ/mol

ΔH°f{SO₂} = -296.8kJ/mol

ΔH°f{Cl₂} = 0kJ/mol

ΔH°rxn = 1×{-364.4kJ/mol} - (1×-296.8kJ/mol + 1×0).

ΔH°rxn = -67.2kJ/mol at 298K.

S°f{SO₂Cl₂} = 311.9J/molK

S°f{SO₂} = 248.2J/molK

S°f{Cl₂} = 223.0J/molK

S°rxn = 1×{311.9J/molK} - (1×248.2J/molK + 1×223.0J/molK).

S°rxn = -159.3J/molK = -0.159.3KJ/molK

Using:

ΔG°rxn = ΔH°rxn - S°rxn×T

Assuming ΔH°rxn doesn't change at 600K:

ΔG°rxn = -67.2kJ/mol - -0.159.3J/molK×600K

The procedure by which H₃O⁺ or OH⁻ is converted to pH is to use the given formulas below:

The relationship between H₃O⁺ (hydronium ion), OH⁻ (hydroxide ion), and pH is given below:

In an aqueous solution, water molecules ionize resulting in the formation of hydronium ions (H₃O⁺) and hydroxide ions (OH⁻) according to the following equilibrium:

H₂O + H₂O ⇌ H₃O⁺ + OH⁻

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Answer:

Sodium oxide is the product

Explanation:

4Na+O2->2Na2O

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

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The synthesis of nylon requires solutions of 5% hexamethylenediamine and 5% adipoyl chloride. This polymer will form between layers of the solutions. To remove the nylon, one can choose to dissolve it in the 5% hexamethylenediamine or in the 5% adipoyl chloride.

Nylon, a synthetic polymer, is produced from the combination of adipoyl chloride and hexamethylenediamine. This process is called the synthesis of nylon. Nylon is a highly flexible material that is resistant to wear and tear, as well as chemical and heat degradation. The synthesis of nylon requires solutions of 5% hexamethylenediamine and 5% adipoyl chloride, respectively, for the two reactants to be mixed together.

The reaction between these two chemicals is exothermic, which means that it releases heat. The heat generated in the reaction drives the reaction forward, resulting in the formation of nylon. The chemical formula for nylon is (-CO-NH-)n, where n is a large number that reflects the degree of polymerization. To remove the nylon, it is soaked in an acid solution. The acid dissolves the nylon, separating it into its constituent components, which can then be purified and reused.

The most commonly used acid for this process is hydrochloric acid. The process of removing nylon from its solvent is called the "acid-catalyzed hydrolysis of nylon." Nylon is used in a variety of applications, including textiles, packaging materials, and electrical components, among others. Its properties make it ideal for use in applications that require durability, strength, and flexibility. Nylon's physical properties, including its resistance to heat and chemical degradation, make it ideal for use in applications such as electrical insulation, packaging materials, and textiles.

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Answer:

Electrode potential is the electromotive force to the galvanic cell built standard.

Explanation:

Electrode potential is the convention electrode is the standard hydrogen electrode to the value zero potential.

Answer:

In electrochemistry, electrode potential is the electromotive force of a galvanic cell built from a standard reference electrode and another electrode to be characterized.

Answer:

Presence of an Electrolyte

Metal Surface

Oxygen or Other Oxidizing Agent

Difference in Potential

Electrochemical Pathway

Explanation:

Answer:

c

Explanation:

the boiling property

When we study chemical reactions, we often talk about which direction the reaction will move in. We can predict the direction of a reaction based on the Gibbs free energy of the reaction.

If the Gibbs free energy of the reaction is negative, then the reaction will proceed forward. If the Gibbs free energy of the reaction is positive, then the reaction will proceed in reverse. A reaction with a Gibbs free energy of zero is at equilibrium.When looking at a reaction, there are many different things to notice and consider. The direction a reaction will proceed is determined by the change in Gibbs free energy. The Gibbs free energy of a system is the energy available to do work, and can be determined using the equation ΔG = ΔH - TΔS, where ΔG is the Gibbs free energy, ΔH is the enthalpy change, T is the temperature, and ΔS is the entropy change of the system. If ΔG is negative, then the reaction will proceed forward, and if ΔG is positive, then the reaction will proceed in reverse. If ΔG is zero, then the reaction is at equilibrium. Therefore, we can predict the direction of a reaction based on the Gibbs free energy of the reaction.

In conclusion, we can predict the direction of a reaction based on the Gibbs free energy of the reaction. The Gibbs free energy of a system is the energy available to do work, and can be determined using the equation ΔG = ΔH - TΔS, where ΔG is the Gibbs free energy, ΔH is the enthalpy change, T is the temperature, and ΔS is the entropy change of the system. If ΔG is negative, then the reaction will proceed forward, and if ΔG is positive, then the reaction will proceed in reverse. If ΔG is zero, then the reaction is at equilibrium.

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Answer: B

Explanation:

Can solve for q= m xCp X ▲T

4.0 X 4.18 X 2 = 33

Answer:

About 0.08486 moles

Explanation:

PV=nRT, when P is the pressure in atmospheres, V is the volume in liters, n is the number of moles, R is the universal gas constant, and T is the temperature in Kelvin.

\(0.432 \cdot 5= n \cdot 0.0821 \cdot 310\)

\(n\approx 0.08486\) moles

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The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

Answer:

Most oxidation-reduction (redox) processes involve the transfer of oxygen atoms, hydrogen atoms, or electrons, with all three processes sharing two important characteristics: (1) they are coupled—i.e., in any oxidation reaction a reciprocal reduction occurs, and (2) they involve a characteristic net chemical change— .

Electrons will be transferred during redox reaction.

The electron is subatomic particles which are placed in surrounding the nucleus. Electrons carry negative charge.

Redox reaction involve the transfer of electrons between intermediates. A redox reaction occurs when the oxidation states of the substrate change. The removal of electrons or even a rise in the oxidation state of such a chemical or its atoms is referred to as oxidation. The acquisition of electrons or a lowering in the oxidation number of a chemical or the atoms inside it is referred to as reduction.

Hence the answer will be electron

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Answer:

metal

Explanation: