Solve each problem. Give your answers to the correct number of significant figures.

a. 8.3 m x 2.22 m


b. 8432 m divide 12.5


c. 35.2 seconds x (1 minute/60 seconds)

In summary, to achieve a noble gas-like stable electron configuration, barium needs to lose two electrons, resulting in a Ba²⁺ ion being formed.

Barium is an element with an atomic number of 56 and an electron configuration of [Xe]6s². Its outermost shell, like all other alkaline-earth metals, contains two electrons. It must lose two electrons to achieve a stable octet electron configuration, which is identical to a noble gas with eight electrons in its outermost shell (like Xe).

Barium has an atomic number of 56, indicating that it has 56 electrons in its natural state. Its electron configuration is [Xe]6s², indicating that there are two electrons in the outermost shell. Since noble gases have full outer shells, barium must lose the two electrons in the outermost shell to achieve a stable octet electron configuration, similar to that of a noble gas.

This results in a Ba²⁺ ion being formed, which is stable since it now has a stable electron configuration. Thus, two electrons need to be lost by barium to achieve a noble gas-like stable electron configuration. Answer more than 100 words: Barium is an alkaline earth metal that is found in Group 2 on the periodic table. It is a soft, silvery-white metal that has a high reactivity rate with air, and as a result, it is never found in its natural state.

It was first discovered in 1808 by Sir Humphry Davy, who named it after the Greek word barys, which means "heavy. "Barium's electron configuration is [Xe]6s², indicating that it has 56 electrons in its natural state. Barium has two electrons in its outermost shell, like all other alkaline-earth metals. Since noble gases have full outer shells, barium must lose the two electrons in the outermost shell to achieve a stable octet electron configuration, similar to that of a noble gas. This results in a Ba²⁺ ion being formed, which is stable since it now has a stable electron configuration.

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Answer:

The common name for the compound H2O is water.

Explanation:

The systemic name of H2O is Dihydrogen monoxide.

Answer:

water

Explanation:

a. The complex [Ru(bipy)3]2+ would more easily racemize through intramolecular ligand substitution as compared to [Fe(bipy)3]2+. This is because Ru(II) is a larger and more electropositive metal ion than Fe(II), resulting in weaker metal-ligand bonds. Weaker bonds make it easier for ligand substitution to occur, thus allowing the complex to racemize more easily.

b. When you perform a metal-to-ligand charge transfer (MLCT) through photoexcitation, the complex with the more reactive excited state would be [Ru(bipy)3]2+. This is because the MLCT results in a reduction of the metal center and oxidation of the ligand. The Ru(II) center in the [Ru(bipy)3]2+ complex is more electropositive and has a greater ability to accept electrons, making it more reactive in the excited state.
c. The photoexcited complex can be considered both an oxidant and a reductant. This is because the photoexcitation process involves the transfer of an electron from the metal center to the ligand, which results in a reduction of the metal center (making it a potential reductant) and an oxidation of the ligand (making it a potential oxidant). The photoexcited complex has the potential to react in both ways, depending on the specific reaction and the environment it is in.

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Answer:

I think it would be A but it might be B please tell if wrong

Answer:

A prediction

Explanation:

A prediction, or forecast, is a statement about a future event. They are often, but not always, based upon experience or knowledge and jack is using his knowledge on clouds to predict when it is going to rain.

Answer:

Explanation:

During the seventeenth and especially eighteenth centuries, driven both by a desire to understand nature and a quest to make balloons in which they could fly (Figure 1), a number of scientists established the relationships between the macroscopic physical properties of gases, that is, pressure, volume, temperature, and amount of gas. Although their measurements were not precise by today’s standards, they were able to determine the mathematical relationships between pairs of these variables (e.g., pressure and temperature, pressure and volume) that hold for an ideal gas—a hypothetical construct that real gases approximate under certain conditions. Eventually, these individual laws were combined into a single equation—the ideal gas law—that relates gas quantities for gases and is quite accurate for low pressures and moderate temperatures. We will consider the key developments in individual relationships (for pedagogical reasons not quite in historical order), then put them together in the ideal gas law

Answer:

University of University of South New York Jersey has is a the best in the world the most important most important aspect of aspect of life is life and marriage is in my a lot more of a urban

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Answer:

This is where much of the chemical energy from food is absorbed into your body for use by the cells. Animals, including humans, get chemical energy from plants. Even when animals eat meat, the chemical energy held in the meat came from the food that the animal ate.

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They get it from food

I hope it help

Answer:

Chemical changes cannot be reversed, their molecules are bonded together. Most Physical changes can be reversed, and their molecules are not bonded

Explanation:

Answer:

1,500$

Explanation:

this would be the answer wouldn't it?

Answer:

Explanation: The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance

The volume that is occupied by the gas is obtained as  56 L.

We know that from the Avogadro's law, the volume that can be occupied by one mole of a gas is obtained as 22.4 L. This implies that we have to find the number of moles in the 70 g of the CO and then obtain the corresponding volume by simple proportion.

Number of moles of CO = 70.0 g/28 g/mol

= 2.5 moles

If 1 mole of the gas occupies 22.4 L

2.5 moles of the gas occupies 2.5 * 22.4/1 mole

= 56 L

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Answer:

28.23 g NH₃

Explanation:

The balanced chemical equation is:

N₂(g) + 3 H₂(g) → 2 NH₃(g)

Thus, 1 mol of N₂ reacts with 2 moles of H₂ to produce 2 moles of NH₃. We convert the moles to mass (in grams) by using the molecular weight (MW) of each compound:

MW(N₂) = 2 x 14 g/mol = 28 g/mol

mass N₂= 1 mol x 28 g/mol = 28 g

MW(H₂) = 2 x 1 g/mol = 2 g/mol

mass H₂ = 3 mol x 2 g/mol = 6 g

MW(NH₃) = 14 g/mol + (3 x 1 g/mol) = 17 g/mol

mass NH₃= 2 moles x 17 g/mol = 34 g

Now, we have to figure out which is the limiting reactant. For this, we know that the stoichiometric ratio is 28 g N₂/6 g H₂. If we have 36.85 g of H₂, we need the following mass of N₂:

36.85 g H₂ x 28 g N₂/6 g H₂ = 171.97 g N₂

We have 23.15 g N₂ and we need 171.97 g. So, we have lesser N₂ than we need. Thus, the limiting reactant is N₂.

Now, we calculate the product (NH₃) by using the stoichiometric ratio 34 g NH₃/28 g N₂, with the mass of N₂ we have:

23.25 g N₂ x 34 g NH₃/28 g N₂ = 28.23 g NH₃

Therefore, the maximum amount of NH₃ that can be produced is 28.23 grams.

The carbon-14 dating technique is used to date organic materials that were once living, such as plants or animals.

Therefore, option A (a granite rock) and option D (an iron nail) cannot be dated using this method as they are inorganic.

Option B (an old coin) could potentially be dated using carbon-14 if it is made of organic material, but many old coins are made of inorganic materials like metal alloys, so it would depend on the specific coin.

Option C (a 6000 year old plank from an old ship) is an example of an organic material that could be dated using carbon-14, as the plank was once part of a living tree that absorbed carbon from the atmosphere.

Overall, the carbon-14 technique is limited to dating materials that contain carbon and were once alive.

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Answer:

9

Explanation:

i think

Cations are always smaller than the atoms from which they form. Anions are always larger than the atoms from which they form. Ions are usually bigger than the atoms from which they are formed.

When an atom receives or loses electrons, the atom's electron configuration changes, resulting in a net positive or negative charge.

This net charge expands the electron cloud surrounding the nucleus, making the ion bigger in size than the neutral atoms from which it arose. When a metal atom loses one or more electrons to create a cation, it shrinks in size because the positive charge of the nucleus pulls the remaining electrons more strongly.

When a nonmetal atom obtains one or more electrons to create an anion, it normally expands in size.Because of the increasing amount of electrons, the electron cloud surrounding the nucleus grows. It should be noted that this comparison is not absolute and is dependent on the individual factors involved. Some ions are smaller than their neutral atom counterparts, while others are similar in size.

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The complete question is:

Compare the size of ions to the size of atoms from which they form.

The coefficient of water (H₂O) in the balanced equation is 2.

To balance the given equation in acidic solution using the lowest possible integers, we will use the half-reaction method. Here are the balanced half-reactions:

1. Oxidation half-reaction: 2 S2O3²⁻(aq) → S4O6²⁻(aq) + 2 e⁻
2. Reduction half-reaction: Cl2(aq) + 2 e⁻ → 2 Cl⁻(aq)

Now, multiply the half-reactions by appropriate factors to balance the electrons:

1. Oxidation half-reaction: 2 S2O3²⁻(aq) → S4O6²⁻(aq) + 2 e⁻
2. Reduction half-reaction: 1 Cl2(aq) + 2 e⁻ → 2 Cl⁻(aq)

Add the balanced half-reactions:

2 S2O3²⁻(aq) + Cl2(aq) → S4O6²⁻(aq) + 2 Cl⁻(aq)

Now, balance the oxygen and hydrogen with water and H⁺ ions:

2 S2O3²⁻(aq) + Cl2(aq) + 2 H₂O(l) → S4O6²⁻(aq) + 2 Cl⁻(aq) + 4 H⁺(aq)

The balanced equation in acidic solution is:

2 S2O3²⁻(aq) + Cl2(aq) + 2 H₂O(l) → S4O6²⁻(aq) + 2 Cl⁻(aq) + 4 H⁺(aq)

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If the volume of solution is determined by using a graduated cylinder, then the mass of solution (instead of measuring it directly on the balance) will be determine by knowing the density of solution.

Graduated cylinders come in a variety of sizes or volumes and, like beakers, measure volume by adding liquid to the cylinder and comparing the liquid level to a graduated scale. When using a graduated cylinder, it is important to read the measurement at the bottom of the meniscus, the curve formed by the water in the cylinder. After measuring the volume of a NaOH or HCl solution, you need to know the density of the solution to calculate the mass of the solution without using a balance. As you know, the density of a solution is determined by the mass per unit volume of the solution. Density is therefore an essential piece of information needed to calculate the mass of a solution.

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Answer:

Explanation:

Are you a gril or boy

Explanation:

you use it yo determine the polarity of a covalent bond using numerical means find the difference between the electron gravity of atoms ; if the result is between 0.4 and 1.7 then generally the bond is polar covalent . pls follow and mark brainliantest

Answer:

They must be dissolving.

Explanation:

Acid molecules must cling to remaining food molecules and slowly dissolve them.

Answer:

V₂ = 112.14 mL

Explanation:

Given data:

Initial volume = 500 mL

Initial pressure = 270 mmHg (270/760 =0.355 atm)

Initial temperature = 55 °C (55 +273 = 328 K)

Final temperature = 100°C (100+273 = 373 K)

Final volume = ?

Final pressure = 1.8 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 0.355 atm × 500mL × 373 K / 328 K × 1.8 atm

V₂ = 66207.5 atm .mL. K /  590.4 K.atm

V₂ = 112.14 mL

Answer:

498 g

0.498 kg

Explanation:

Answer:

4.498 kg

1.47

35.0

51.5

Explanation:

The delta H for the reaction is -176 kJ/mol.

The reaction can be written as:

HCl (g) + NH3 (g) → NH4Cl (s)

The standard enthalpy of formation (∆Hf°) values are:

∆Hf° HCl(g) = -92.3 kJ/mol

∆Hf° NH3(g) = -46.1 kJ/mol

∆Hf° NH4Cl(s) = -314.4 kJ/mol

Using the Hess's law, we can calculate the enthalpy change (∆H) for the reaction by subtracting the sum of the enthalpies of formation of the reactants from the sum of the enthalpies of formation of the products:

∆H = ∑∆Hf°(products) - ∑∆Hf°(reactants)

∆H = [-314.4 kJ/mol] - [-92.3 kJ/mol - 46.1 kJ/mol]

∆H = -176 kJ/mol

Therefore, the delta H for the reaction is -176 kJ/mol.

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Answer:

b precipitation

Explanation:

When rain or sleet falls, it is concidered precipitation!

Have an amazing day!!

PLEASE RATE AND MARK BRAINLIEST!!!!

The percent composition  of this compound :

Mg = 72.182%

N = 27.818%

Given

9.03 g  Mg

3.48 g  N

Required

The percent composition

Solution

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

Total mass of the compound :

= 9.03 g + 3.48 g

= 12.51 g

The percent composition :

Mg : 9.03/ 12.51 g x 100% = 72.182%

N : 3.48 / 12.51 g x 100% = 27.818%

Because current is flowing OPPOSITE of electron transport when lit, the Pt electrode makes the solar cell similar to a battery.

A solid electric conductivity called an electrode is used to introduce electric current into ou pas solids, liquids, gases, plasmas, or vacuums. Reduction and oxidation events happen at the electrodes of an electrochemical cell.

Ion-filled bodily fluids allow for electrical conductivity. As a result, it is now feasible to monitor and record electrical activity around the heart using electrodes applied to the skin's surface.

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Answer:

the molecules strike the walls of the container more often.

Explanation:

The pressure of a gas refers to the force per unit area exerted on the walls of container by gas molecules.

Since the average kinetic energy of gas molecules increases as the temperature of the gas increases, the molecules of the gas tend to strike the walls of the container more often as the temperature of the gas increases.

Hence, the pressure of a gas increases due to an increase in temperature because the gas molecules strike the walls of the container more often.

A battery is a device that converts chemical energy into electrical energy through a process known as an electrochemical reaction.

When a battery is connected to a circuit, the electrochemical reaction causes a flow of electrons from the anode to the cathode, generating an electric current that can power a device.

The metal chosen for the anode must be capable of losing electrons easily, while the metal chosen for the cathode must be capable of accepting electrons. The choice of metals can also affect the voltage and capacity of the battery, as well as its overall efficiency.

In general, the metals used in a battery should have a large difference in their electronegativity values, which determines how easily an atom can attract electrons. Common metals used in batteries include zinc, lithium, nickel, and cadmium.

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Answer:

D

Explanation:

electrons have a negative charge. gaining electrons increases the negative charge.

Answer: 121.2416 psi

Explanation: