the orbitals 1, 2, 5, and 8 that are depicted in problem (1) are derived from mixing of the carbon 2s and 2pz orbitals, and they sure look a lot like hybrid orbitals. however, we showed in class that there is no hybridization of p and s orbitals in methane! why can the pz and s orbitals of the carbon atoms mix in ethylene but cannot do so in methane?

The systematic name of Na3[AlF6] is "sodium hexafluoroaluminate."

he compound Na3[AlF6] consists of sodium (Na) and aluminum fluoride (AlF6). To determine its systematic name, we need to follow the rules of IUPAC nomenclature.

1. Sodium (Na) is a cation with a +1 charge, so it is named simply as "sodium."

2. Aluminum fluoride (AlF6) is a complex anion. The aluminum cation (Al3+) forms a coordination compound with six fluoride (F-) ions, resulting in the formula [AlF6]3-. In the IUPAC nomenclature, the name of the complex anion is derived by stating the name of the central metal ion, followed by the ligands in alphabetical order. In this case, the systematic name for [AlF6]3- is "hexafluoroaluminate."

Putting it all together, the systematic name for Na3[AlF6] is "sodium hexafluoroaluminate."

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Answer:

They are already matched for you. It goes

1.

2.

3.

in the order of the questions.

The amount of heat released to the surroundings when a 100 g piece of heated iron cools from 50 to 20 deg C can be calculated. The answer is a. 300 J of heat are released.

When an object cools down, it releases heat to its surroundings. The amount of heat released can be calculated using the formula Q = mcΔT, where Q is the heat released, m is the mass of the object, c is the specific heat capacity of the material, and ΔT is the change in temperature. In this case, we know the mass of the iron piece is 100 g, and the temperature change is from 50 to 20 deg C. The specific heat capacity of iron is also known, which is 0.45 J/g°C. Substituting these values in the formula gives us Q = (100 g)(0.45 J/g°C)(50-20 deg C) = 1350 J. However, the question asks for the heat released in Joules, not in calories. Therefore, we need to convert the answer to Joules. One calorie is equal to 4.18 J, so 300 calories is equal to (300 cal)(4.18 J/cal) = 1254 J. Therefore, the answer is a. 300 J of heat are released.

In conclusion, we can calculate the amount of heat released to the surroundings when a 100 g piece of heated iron cools from 50 to 20 deg C. We can use the formula Q = mcΔT, where Q is the heat released, m is the mass of the object, c is the specific heat capacity of the material, and ΔT is the change in temperature. The specific heat capacity of iron is known, so we can substitute the values and calculate the heat released. The answer is a. 300 J of heat are released.

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Arrhenius is postulated in 200 years after that fluids can dissolve many compounds by dividing them into their constituent ions. He argued that acids contain helium and that when they dissolve in water, they release hydrogen.

Pursuant to the Arrhenius the hypothesis, acidic is a component that produces hydrogen ion in freshwater. With fluid, basic elements emit the ion hydroxide. According to the Bronsted-Lowry theory, an acid is a proton giver while a base is a recipient of protons.

Bases are chemicals that, while dispersed into water, establish hydroxide ions (OH-). Bases and acids. Any material that ionises when dissolved in liquid to give a charge called H+ and hydrogen called an Arrhenius acid. When submerged in fluid, an Arrhenius foundation is a material the fact that releases the OH-, or hydroxide, the ion.

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Answer:

The mass of 1 atom of silver is 1.79 x 10-22g.

Answer:

See the explanation

Explanation:

In this question we have to take into account that we have to get the same amount of atoms on both sides, so:

Reaction 1

\(BaCl_2~+~H_2SO_4~=>~BaSO_4~+~2HCl\)

We have 1 Ba, 2 Cl, 2 H and 4 O on both sides

Reaction 2

\(Ca(OH)_2~+~CO_2~=>~CaCO_3~+~H_2O\)

We have 1 Ca, 2O, 2 H and 1 C on both sides

Reaction 3

\(2Al~+~3CuCl_2~=>~2 AlCl_3~+~3Cu\)

We have 2 Al, 3 Cu, and 3 Cl on both sides

Reaction 4

\(2SO_2~+~O_2~=>~2SO_3\)

We have 2 A and 6O on both sides

Reaction 5

\(2NH_3~+~3CuO~=>~3Cu~+~N_2~+~3H_2O\)

We have 2 N, 3 H, 3 Cu and 3O on both sides.

I hope it helps

Answer:

Percent composition = mass of element in the compound/mass of compound × 100

In this case, the mass of the compound is its molar mass.

Percent Composition of N in CO(NH2)2 (urea)

Molar mass CO(NH2)2 = 60.056 g/mol

Mass of N = 2×14.007 g/mol = 28.014 g/mol

%N: 28.014 g/mol/60.056 g/mol × 100 = 46.646%

Percent Composition of N in NH4NO3 (ammonium nitrate)

Molar mass of NH4NO3 = 80.044g/mol

Mass of N = 2×14.007 = 28.014 g/mol

%N: 28.014 g/mol/80.044 g/mol × 100 = 34.998%

Hope this helps, please let me know If I'm wrong.

Answer:

The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products

Explanation:

The 4s orbital in the electronic configuration of a germanium should be filled first before 3d orbital because 4s orbital has a less energy than 3d orbital.

The electronic configuration of element is written in the order which is given in the attached image. The order of filling electron is given by Madelung rule in which electrons tries to achieve the order which fills the energy sublevels of atoms. According to the Aufbau principle, electrons occupy the lowest energy sublevel.

In other words, the orbital with a smaller value of n+l will be filled first. The n and l value for 4s orbital is 4 and 0 respectively. The n and l value for 3d orbital is 3 and 2. Hence, their n+l value will be

4s=(4+0)=4

3d=(3+2)=5

Hence, the electronic configuration of germanium should be written as 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰.

Therefore, 4s orbital in the electronic configuration of a germanium should be filled first before 3d orbital because 4s orbital has a less energy than 3d orbital.

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Answer:

Pressure (P) is defined as the force of all the gas particle/wall collisions divided by the area of the wall: pressure=forcearea..

Explanation:

All gases exert pressure; it is one of the fundamental measurable quantities of this phase of matter

Answer

C. 259 K

Explanation

Given:

Temperature = -14°C

What to find:

The temperature in kelvins of -14°C.

Solution:

Conversion factor: 0°C + 273 = 273 K

Therefore, 14°C + 273 = 259 K

The temperature in kelvins of -14°C is 259 K

Answer:

Answer:

By adding, a few drops of AgNO3

Dilute HCl reacts with silver nitrate to give a white precipitate of silver chloride.

On the other hand there is no reaction observed when dilute Nitric acid is treated with silver nitrate solution. That is obvious

Reactions :-

HCl(aq) + AgNO3(aq) >>> AgCl(s) + HNO3(aq)

HNO3(aq) + AgNO3(aq) >>> No reaction + No precipitate

Answer: Calcium

Hope this helps

Answer:

A. the right side

Explanation:

Taking into account the definition of covalent bond, the correct answer is option A.) right side of the periodic table contain atoms that form covalent bonds.

The covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule. Covalent bonds are established between non-metallic elements. These elements have many electrons in their outermost level (valence electrons) and have a tendency to gain electrons to acquire the stability of the electronic structure of noble gas. The shared electron pair is common to the two atoms and holds them together.

In other words, a covalent bond is a force that joins two atoms of non-metallic elements to form a molecule. Atoms share pairs of electrons from their valence shell to achieve the stability of the molecule formed. The tendency of the elements to reach a stable configuration is known as the octet rule.

Finally, since the nonmetallic elements are found on the right side of the periodic table, the correct answer is option A.) right side of the periodic table contain atoms that form covalent bonds.

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Answer:

I think c

Explanation:

sorry if I am wrong:(

I did not learn about this:((

Answer:

0.13 grams of O2

Explanation:

Just did worksheet

Answer:

in general, as the temperature increases, the solubility of gases in water decreases and the solubility of most solids in water increases.

The partial pressure of carbon dioxide in the sealed vessel is 0.5 atm.

To find the partial pressure of the carbon dioxide, we need to first calculate the total pressure of carbon dioxide in the mixture.

Assuming that the volume of the sealed vessel remains constant, we can use Dalton's Law of Partial Pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual gases.

So, if the total pressure of the gas mixture is 5 atmospheres, we can calculate the partial pressure of carbon dioxide as follows:

Partial pressure of carbon dioxide = (10/100) x 5 atm = 0.5 atm

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Answer:Chemical equations must be balanced to satisfy the law of conservation of matter, that states that matter cannot be produced or destroyed in a closed system. The law of conservation of mass governs the balancing of a chemical equation.

Explanation:

Answer: I think its 111.6

Explanation:

Sand and water can be separated by any of the following methods:

1. Sedimentation and decantation: This method involves the mixture being kept undisturbed for some time. After some time, sand being heavier and insoluble in water, settles down at the bottom of container. Now, water is poured into another container to separate it from sand.

2. Filtration: This method involves the mixture being passed through a filter paper (a filter with very fine pores). Sand particles being larger in size are retained by the filter paper and get separated from water.

I hope this helps! :D

The equilibrium constant, K, for the reaction H2(g) + I2(g) ⇄ 2HI(g) can be calculated using the expression K= [HI]2/([H2][I2]). Since the concentrations of H2, I2, and HI are given in the question, we can calculate the equilibrium constant, K, for the reaction.

K = [HI]2/([H2][I2]) = (1.77 × 10-2)2/((1.83 × 10-3)(3.13 × 10-3)) = 4.43 × 104. Therefore, the equilibrium constant, K, for the reaction H2(g) + I2(g) ⇄ 2HI(g) at 425°C is 4.43 × 104.

Using the specified concentrations of H2, I2, and HI, it appears that you have correctly calculated the equilibrium constant, K, for the reaction H2(g) + I2(g) 2HI(g) at 425°C. The ratio of the concentrations of the reactants and products at equilibrium, K, is represented by each concentration being raised to the power of its stoichiometric coefficient.

The concentration of the product, HI, is preferred above the concentrations of the reactants, H2 and I2, at equilibrium, as shown by the value of K = 4.43 104 in this instance. This suggests that at equilibrium, the forward reaction—the creation of HI—is preferred.

It is significant to remember that the equilibrium constant, K, is temperature-dependent, and that temperature changes affect K's value.

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If The Excellence Cοrpοratiοn fοr Servicing Excellence sells the οffice furniture fοr $6,000, they wοuld recοgnize a lοss οf $1,000 οn the sale.

The recοgnitiοn οf the sale οf the οffice furniture by The Excellence Cοrpοratiοn fοr Servicing Excellence wοuld invοlve the fοllοwing:

The calculatiοn οf the gain οr lοss οn the sale:

Prοceeds frοm the sale: $6,000

Cοst οf the furniture: $10,000

Accumulated amοrtizatiοn: $5,000

Calculatiοn:

Gain/Lοss οn sale = Prοceeds frοm sale - (Cοst οf furniture - Accumulated amοrtizatiοn)

Gain/Lοss οn sale = $6,000 - ($10,000 - $5,000)

Gain/Lοss οn sale = $6,000 - $5,000

Gain/Lοss οn sale = $1,000

Determining the nature οf the gain οr lοss:

Since the prοceeds frοm the sale ($6,000) are less than the carrying value οf the asset ($10,000 - $5,000 = $5,000), a lοss will be recοgnized οn the sale.

Therefοre, if The Excellence Cοrpοratiοn fοr Servicing Excellence sells the οffice furniture fοr $6,000, they wοuld recοgnize a lοss οf $1,000 οn the sale.

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The equation for the combustion reaction of ethylene (C2H4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) is:

C2H4 + 3O2 -> 2CO2 + 2H2O

The balanced equation represents the stoichiometry of the combustion reaction. Here is the interpretation of the equation:

Molecular Interpretation:

1 molecule of ethylene reacts with 3 molecules of oxygen to produce 2 molecules of carbon dioxide and 2 molecules of water.

Molar Interpretation:

1 mole of ethylene reacts with 3 moles of oxygen to produce 2 moles of carbon dioxide and 2 moles of water.

Mass Interpretation:

The molar masses of the compounds involved are:

C2H4: 2(12.01 g/mol) + 4(1.01 g/mol) = 28.05 g/mol

O2: 2(16.00 g/mol) = 32.00 g/mol

CO2: 1(12.01 g/mol) + 2(16.00 g/mol) = 44.01 g/mol

H2O: 2(1.01 g/mol) + 16.00 g/mol = 18.02 g/mol

Therefore, when 28.05 grams of ethylene react with 96.00 grams of oxygen, they produce 88.02 grams of carbon dioxide and 36.04 grams of water.

The balanced equation C2H4 + 3O2 -> 2CO2 + 2H2O represents the combustion of ethylene with oxygen, resulting in the formation of carbon dioxide and water. The equation can be interpreted on a molecular, molar, and mass basis to understand the stoichiometry and quantities involved in the reaction. This information is useful for calculating reactant and product amounts, as well as for understanding the composition and yields of the combustion products.

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Answer:

8

Explanation:

Rocky planets:

Mercury

Venus

Earth (We are here)

Mars

Gas giants:

Jupiter

Saturn

Uranus

Neptune

Hi!there are 8 planets in the solar system they are=

(there was one more planet Pluto but in 2006 scientists said that Pluto was not a planet but a drawf planet)

Every action has a corresponding and opposing reaction. A water rocket uses a little bit of water and pressured air to launch a plastic rocket many feet into the air. Thus, choice D is the right choice.

resistance against a movement, power, or influence. Particularly: a response to a certain course of action, situation, or stimulus; a propensity forward towards a former and generally outmoded social or political structure and philosophy. She was shocked by the information.

A response is an action that is done as a result of anything. You can tell whether your parents are upset if you tell them you want to go out by their response. A response frequently has a physical component.

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Answer:

A. The largest value is 7 and the smallest value is 1. Find the difference. 7 - 1 = 6.

Explanation:

It causes freezing point depression which requires the gasoline to reach a much lower temperature before freezing. Hence, option C is correct.

Whenever a solute is added to a solution/solvent, it leads to depression in the freezing point of that solution/solvent. Depression in the freezing point of a solution on the addition of a solute is a colligative property.

A colligative property is a physical property which depends upon the number of solutes added not on the nature of solutes which means it does not matter whether we are adding 1000 particles of sugar or salt in water, the depression in the freezing point will occur by the same °C. Also, the more a solute is added the more will be the depression at the freezing point.

The formula for depression at the freezing point is mentioned as under:

             Δ T = K x m

where Δ T = freezing point depression;

                 K = cryoscopic constant;

                 m = molality of the solution.

For example, The freezing point of water is 0 °C but as soon as we add a 92 gm solute like NaCl (common salt) in 1000 gm of water, its freezing point will be lower to −3.72 °C.

Hence, option C is correct.

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