Give an example of a polar protic solvent. What reaction do they favor?

Answer:

‍♀️?sorryyyyyyyyyyyyy

Neon

The noble gas that is used by researchers to cool down samples for analysis is neon.

What is a noble gas?

A noble gas is a group of elements that make up group 18 of the periodic table. Noble gases are nonreactive, nonmetallic chemical elements that have full outer electron shells (thus making them highly stable) and low reactivity. The six noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

What are the uses of neon?

Neon has a number of applications in a variety of fields, some of which are listed below:

Electronics: neon is used in high-voltage indicators, lightning arresters, and electronic equipment as a low-pressure gas.

Neon lamps are used in night glow signs and decorative lighting for homes and businesses. Lasers: Neon gas is used in gas lasers, which are frequently used in medical equipment and research laboratories.

Radiometric dating: Radon-222, a decay product of radium-226, can be used to date rocks and fossils.

Neon is used by researchers to cool down samples for analysis.

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The outermost shell of electrons determines the properties of elements. Option C.

Atoms are the fundamental building blocks of all matter. They are composed of a nucleus, which contains protons and neutrons, and a surrounding shell of electrons.

The number of protons in an atom's nucleus determines what element it is. The outermost shell of electrons determines the properties of elements, such as how they interact with other elements.

Option C states that the outermost shell of electrons determines the properties of elements. This is a true statement and is supported by the fact that the electrons are what determine how atoms interact with one another.

For example, if two atoms have different outermost shells, then they will likely react differently. Additionally, if two atoms have the same outermost shell, then they will likely form a bond.

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26 moles of oxygen (O₂) are required to react completely with 4 moles C₄H₁₀.

In this balanced chemical equation, 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O, the stoichiometric coefficients indicate the molar ratios of reactants and products in the reaction.

To find the number of moles of O₂ needed to react with 4 moles of C₄H₁₀, we can use the stoichiometric coefficients as conversion factors. We see that 2 moles of C₄H₁₀ react with 13 moles of O₂. To find the number of moles of O₂ reacting with 4 moles of C₄H₁₀, we can set up a proportion as follows:

(4 moles C₄H₁₀) × (13 moles O₂ / 2 moles C₄H₁₀)

The "moles C₄H₁₀" units cancel out, leaving us with moles of O₂:

(4 × 13) / 2 = 26 moles O₂

Therefore, 26 moles of oxygen (O₂) are required to react completely with 4 moles of butane (C₄H₁₀).

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To combine ions to form ionic compounds, we need the combine in such a way that it gets neutral charge.

We can combine each anion with each cation to get the 4 compounds we need.

To combine SO₄²⁻ with Pb⁴⁺ we first find the Least Common Multiple of their charges, 2 and 4.

They have the factor 2 in common, so the LCM is 4. This is the final charge of each that will cancel out.

To get 4+, we only need 1 Pb⁴⁺.

To get 4-, we need 2 SO₄²⁻.

So, the formula is:

Pb(SO₄)₂

To combine SO₄²⁻ with NH₄⁺ is easier because one of them has single charge. In this case, we can simply pick one of the multiple charge ion and the same amount that will cancel its charge of the single charged one.

So, we picke 1 SO₄²⁻, ending with 2-.

And we picke 2 NH₄⁺, ending with 2+.

The formula:

(NH₄)₂SO₄

To combine C₂H₃O₂⁻ with Pb⁴⁺ we do the same, because the anion is single charged.

Pick 1 Pb⁴⁺, ending with 4+.

Pick 4 C₂H₃O₂⁻, ending with 4-.

The formula:

Pb(C₂H₃O₂)₄

To combine C₂H₃O₂⁻ with NH₄⁺, both have same charge, so we just need one of each and their charges will cancel out.

The formula:

NH₄C₂H₃O₂

So, the formulas are:

Pb(SO₄)₂

(NH₄)₂SO₄

Pb(C₂H₃O₂)₄

NH₄C₂H₃O₂

Explanation: To dissolve an ionic compound, the water molecules must be able to stabilize the ions that result from breaking the ionic bond. They do this by hydrating the ions. ... When you place an ionic substance in water, the water molecules attract the positive and negative ions from the crystal.

The standard potential for the given galvanic cell is +1.06 V.

To calculate the standard potential for the given galvanic cell, we need to determine the individual reduction potentials of the half-reactions and then subtract the potential of the anode (where oxidation occurs) from the potential of the cathode (where reduction occurs).

Given reduction half-reaction potentials:

Ag+(aq) + e^− → Ag(s): E∘ = +0.80 V

Ni2+(aq) + 2e^− → Ni(s): E∘ = -0.26 V

Since we have the reduction potentials for both half-reactions, we can directly calculate the standard potential for the cell:

E∘(cell) = E∘(cathode) - E∘(anode)

= E∘(Ag+(aq) + e^− → Ag(s)) - E∘(Ni2+(aq) + 2e^− → Ni(s))

E∘(cell) = +0.80 V - (-0.26 V)

= +1.06 V

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Answer:

1- Hydrogen enters plants as a component of water.

2-Hydrogen combines with carbon dioxide to make glucose.

Explanation:

Hydrogen enters the plant bonded with Oxygen as water (H2O).

The water molecule splits and the Hydrogen combines with carbon dioxide to make glucose.

Answer:

1 - Hydrogen enters plants as a component of water.

2 - Hydrogen combines with carbon dioxide to make glucose.

Explanation:

Answer:

part 1. minerals

part2. mars and earth the temperature is different by 0.5° Celsius

Explanation:

because the evaluation and factors of minerals are extremely affectively that the climate is likely to be affected

it is true statements

Explanation:

hope it will help you

The number of atoms = 4.8 x 10²² atoms

Given

5.9 g of Lithium carbonate

Required

The number of atoms

Solution

mol Lithium carbonate(MW=73.9 g/mol) :

= mass : MW

= 5.9 g : 73.9 g/mol

= 0.08

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

So for 0.08 mol :

= 0.08 x 6.02.10²³

= 4.8 x 10²² atoms

Explanation:

At a certain temperature, iron (II) oxide, FeO, can react with carbon monoxide, CO, to form elemental iron, Fe, and carbon dioxide, CO2. The value of Kp at that temperature is 0.242. What is the pressure of CO2 at equilibrium if a sample of FeO was initially in a container with CO at a pressure of 0.95 atm? The chemical reaction involved in this process is: FeO(s) + CO(g) ⟷ Fe(s) + CO2(

Answer:

The balanced chemical equation for the reaction you provided is: CaC2 + 2H2O → Ca(OH)2 + C2H2.

According to this equation, for every mole of CaC2 that reacts with 2 moles of H2O, one mole of C2H2 is formed. So if 1.25 moles of C2H2 are formed, it means that 1.25 moles of CaC2 reacted with 2.5 moles of H2O.

Therefore, 2.5 moles of water are consumed when 1.25 moles of C2H2 are formed.

Steps:

Here are the steps I took to determine how many moles of water are consumed when 1.25 moles of C2H2 are formed:

1. First, I looked at the balanced chemical equation you provided: CaC2 + 2H2O → Ca(OH)2 + C2H2.

2. From this equation, I could see that for every mole of CaC2 that reacts with 2 moles of H2O, one mole of C2H2 is formed. This is known as the stoichiometry of the reaction.

3. Since you mentioned that 1.25 moles of C2H2 are formed, I used the stoichiometry of the reaction to determine that 1.25 moles of CaC2 must have reacted with 2.5 moles of H2O (since for every mole of CaC2 that reacts, 2 moles of H2O are consumed).

4. Therefore, I concluded that 2.5 moles of water are consumed when 1.25 moles of C2H2 are formed.

I hope this explanation helps! Let me know if you have any further questions.

These observational techniques and technologies enable astronomers to unravel the complex composition of stars and celestial objects, shedding light on the mysteries of the universe.

1. We know what stars are made of through the use of spectroscopy. Spectroscopy is a scientific technique that analyzes the interaction between light and matter. It allows us to study the unique fingerprint of light emitted or absorbed by different elements.

By using spectroscopy, scientists can examine the spectral lines, which are specific wavelengths of light that are either emitted or absorbed by different elements. These spectral lines provide crucial information about the chemical composition of stars and other celestial objects.

Spectroscopy extends beyond the visible range of our eyes. There are different types of spectroscopy, such as ultraviolet, infrared, and X-ray spectroscopy, which allow us to observe spectral lines that are not visible to us directly. These technologies use specialized detectors and instruments to detect and analyze these wavelengths of light, providing valuable insights into the composition of stars and other objects.

2. Our Sun is primarily composed of hot gases. Through spectroscopy, scientists have identified the specific elements present in the Sun's atmosphere. The prominent spectral lines observed in the Sun's spectrum correspond to elements such as hydrogen, helium, and trace amounts of other elements like oxygen, carbon, and iron.

The spectral lines from the Sun match with known spectral lines of these elements, confirming their presence in the Sun's composition. By studying the intensity and characteristics of these spectral lines, scientists can deduce the abundance and temperature of the different gases in the Sun.

3. Let's consider the Orion Nebula as an example of a deep space object. The composition of the Orion Nebula has been studied using a combination of technologies, including optical spectroscopy and infrared observations.

Optical spectroscopy helps to identify the presence of elements such as hydrogen, helium, oxygen, nitrogen, and other trace elements in the nebula. By analyzing the spectral lines emitted or absorbed by these elements, scientists can determine their abundance and temperature.

Infrared observations, on the other hand, allow scientists to probe the dust particles present in the nebula. By studying the infrared emission from the dust, scientists can gain insights into the chemical composition of the interstellar material and molecules present in the Orion Nebula.

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Carbonated beverages contain dissolved carbon dioxide gas. Low temperatures are best to minimize the solubility. option C is correct.

Drinks that have carbon dioxide dissolved in the water are referred as carbonated beverages. The presence of this gas causes the liquid to froth.

Carbonation takes place by applying pressure. Spring water, beer and soda, and pop are a few examples of carbonated beverages. When carbon dioxide  is absorbed in a liquid, for example spring water, it absorbs Carbon dioxide from the subsurface. It can also happen naturally. Beer is  example of a naturally carbonated beverage as the brewing process produces carbon dioxide soda .

Thus option C is correct.

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Answer:

A solution in which the maximum amount of solvent has been dissolved

Explanation:

For example, 36g of salt in 100g of water.

Answer:

84

Explanation:

Sulfur dioxide, or SO2, is a polar molecule. Its electron geometry is trigonal planar, its molecular geometry is bent, and its polarity is due to the lone pair electrons on the central sulfur atom.

Polarity is a term used to describe a physical property of molecules that arises as a result of the uneven distribution of electrons within the molecule. This can happen when one atom in the molecule is more electronegative than the other atoms, causing it to attract the electrons more strongly. As a result, the molecule has a positive and a negative end, or pole.

Sulfur dioxide (SO2)

SO2 has a central sulfur atom bonded to two oxygen atoms. The molecular geometry of SO2 is bent because of the lone pair of electrons present on the sulfur atom. This causes the molecule to be asymmetrical, resulting in a dipole moment and a polar molecule.

Sulfur dioxide is an important industrial chemical that is used in a variety of applications, including the production of sulfuric acid, which is used in many industrial processes.

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c.15gof in25mlof wather

The sugar solution that is the most concentrated is 15 g of sugar in 25 mL of water.

CONCENTRATION:

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ANSWER

The final pressure of the gas is 342.31 torr

EXPLANATION

Given that;

The initial pressure of the gas is 767.7 torr

The initial volume of the container is 58.1 mL

The final volume of the container is 130.3mL

Follow the steps below to find the final pressure of the gas

In the given data, the temperature of the gas is fixed, therefore, we can apply Boyle's law to find the volume

Step 1; States Boyle's law

Boyle's law states that the volume of a given mass is inversely proportional to its applied pressure provided that the temperature of the gas remains constant.

Mathematically

Step 2; Substitute the given data into the above formula

Therefore, the final pressure of the gas is 342.31 torr

Answer:

Answer is meter. ~~~~~~

Explanation:

Soap solution is called a mixture because you're combining a ratio of liquid soap and water to make a mixture.

There is no element that is exclusively found only in the human body. Elements found in the human body are also present in various forms throughout the Earth's crust, atmosphere, and other living organisms. However, there are elements that are essential for human life and play crucial roles in our body's biological processes.

Some key elements found in the human body include oxygen (O), carbon (C), hydrogen (H), and nitrogen (N). These elements make up a large percentage of our body's composition and are the building blocks for molecules like proteins, carbohydrates, and lipids. Other essential elements, such as calcium (Ca), phosphorus (P), potassium (K), sulfur (S), sodium (Na), chlorine (Cl), and magnesium (Mg) also play vital roles in maintaining our health and ensuring proper functioning of our cells.

In summary, while there isn't an element that is solely found in the human body, there are several elements that are crucial for our body's proper functioning and overall health. These elements can be found in various forms and quantities throughout the Earth and other living organisms as well.

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Answer: B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

Equation

B2Br6+HNO3=B(NO3)3+HBr

B=2                                 B=1

BR=6                             BR=1

H=1                                  H=1

N=1                                  N=3

O=3                                 O=9

ANSWER

B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

B=2                                 B=2

BR=6                             BR=6

H=6                                  H=6

N=6                                  N=6

O=18                                 O=18

HOPE THIS HELPS

The solutions in order of increasing molarity are: a. 29.2 g per 5 L (0.0998 M), b. 11.6 g per 50 mL (3.98 M), c. 2.9 g in 10.2 mL (4.86 M)

To find the molarity of each salt solution, it is required to use the formula:

Molarity (M) = (moles of solute) / (volume of solution in liters)

To determine the moles of solute, we'll use the formula:

moles = (mass of solute) / (molar mass of solute)

The molar mass of NaCl is 58.44 g/mol.

Let's find the molarity for each solution and then arrange them in order of increasing molarity.

a. 29.2 g per 5 L:

First, find the moles of NaCl:

moles = 29.2 g / 58.44 g/mol = 0.499 mol

Now detrmine the molarity:

Molarity = 0.499 mol / 5 L= 0.0998 M

b. 11.6 g per 50 mL:

Change the volume to liters:

Volume = 50 mL = 50 mL / 1000 mL/L = 0.05 L

Find the moles of NaCl:

moles = 11.6 g / 58.44 g/mol = 0.199 mol

Determine the molarity:

Molarity = 0.199 mol / 0.05 L = 3.98 M

c. 2.9 g in 10.2 mL:

Change the volume to liters:

Volume = 10.2 mL / 1000 mL/L = 0.0102 L

Find the moles of NaCl:

moles = 2.9 g / 58.44 g/mol = 0.0496 mol

Determine the molarity:

Molarity = 0.0496 mol / 0.0102 L= 4.86 M

Now arrange the solutions in order of increasing molarity:

a. 0.0998 M, b. 3.98 M, c. 4.86 M

Thus, the solutions in order of increasing molarity are:

a. 29.2 g per 5 L (0.0998 M)

b. 11.6 g per 50 mL (3.98 M)

c. 2.9 g in 10.2 mL (4.86 M)

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a. The Potential Energy (PE) of reactants is 250 KJ/mole. When the reactants are reacting, the Potential Energy is transformed into Kinetic Energy, which is also referred to as the Activation Energy (AE), and the PE of the products.

b. The potential energy diagram of the reaction is shown below. In this diagram, all axes, i.e. Y-axis (Potential Energy) and X-axis (reaction coordinates) have been labeled.

c. One may lower the activation energy (AE) of the reaction by using the following methods:

Temperature: The activation energy of an exothermic reaction decreases with increasing temperature.

Catalyst: A catalyst is a substance that reduces the activation energy of a reaction and increases the reaction rate. The catalyst's role is to provide a different reaction mechanism that has a lower activation energy.

Increasing the concentration of reactants: The rate of the reaction increases with an increase in the concentration of the reactants. Because an increase in the concentration of the reactants increases the frequency of their collisions, which also increases the chance of successful collisions.

Increasing surface area: The rate of the reaction also increases with an increase in the surface area of the reactants because more particles are exposed to collisions, which increases the frequency of successful collisions.

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Answer:

That’s a question on school- what- I-

Explanation: