A compound is found to contain 9.227 % boron and 90.77 % chlorine by mass. What is the empirical formula for this compound?

Option  D. Water is a renewable resource that can be used to generate electricity through a process called hydropower.

Hydropower is a clean and sustainable method of producing electricity, as it does not involve the burning of fossil fuels like coal, which contributes to air pollution and climate change.

In hydropower systems, the kinetic energy of flowing or falling water is harnessed and converted into electrical energy. This is typically achieved by constructing a dam across a river or using a run-of-the-river system, which does not require a large reservoir. As water flows through the dam or system, it turns a turbine connected to an electric generator, producing electricity.

To summarize, water is a renewable resource that can be effectively utilized to generate electricity through hydropower, offering a sustainable, clean, and reliable alternative to non-renewable resources like coal, phosphate, and silica. Therefore the correct option D

Know more about hydropower here:

https://brainly.com/question/30197735

#SPJ11

Answer:

Lower the pH slightly

Explanation:

The mixture of HF, hydrofluoric acid and KF, potassium fluoride produce a buffer that is defined for the equilibrium:

HF(aq) → H⁺(aq) + F⁻(aq)

The buffer can maintain the pH of a solution despite the addition of strong bases or acids.

The reaction of HF with Ca(OH)2 is:

2HF + Ca(OH)2 → 2H2O + CaF2

That means the calcium hydroxide is decreasing the concentration of HF. Based on the equilibrium, the H+ and F- ions will decrease in order to produce more HF. As H+ is decreasing due the equilibrium and not for the addition of a strong base, the pH is decreasing slightly.

CO₃²⁻ ion has a trigonal planar geometry around the bold-faced atom, and its bond angle is 120⁰.

The three-dimensional configuration of the atoms that make up a molecule is known as molecular geometry.

In addition to bond lengths, bond angles, torsional angles, and any other geometrical factors that affect each atom's location, it also contains the molecule's overall structure.

The CO₃²⁻ ion possesses a trigonal planar molecular structure and electron geometry because it adheres to the AX₃ generic formula of the VSEPR theory module.

Because the core C atom in the CO₃²⁻ Lewis structure is connected to three bound oxygen atoms. Therefore, the VSEPR theory predicts that the CO₃²⁻ ion exhibits sp2 hybridization.

Thus, option C is correct.

To learn more about bond angle follow the link;

https://brainly.com/question/14089750

#SPJ1

Answer:

0.252 milimoles

Explanation:

To convert mass of a substance to moles it is necessary to use the molar mass of the substance.

The formula of morphine is C₁₇H₁₉NO₃, thus, its molar mass is:

C: 17*12.01g/mol = 204.17g/mol

H: 19*1.01g/mol = 19.19g/mol

N: 1*14g/mol = 14g/mol

O: 3*16g/mol = 48g/mol.

204.17 + 19.19 + 14 + 16 = 285.36g/mol

Thus, moles of 71.891 mg = 0.071891g:

0.071891g × (1mol / 285.36g) = 2.5193x10⁻⁴ moles

As 1 mole = 1000 milimoles:

2.5193x10⁻⁴ moles = 0.252 milimoles

Answer:

subtract the answer it'll get you that.

Explanation:

Ethanol is formed by the combination of carbon, hydrogen and oxygen as shown in the image attached.

We know that ethanol is an organic compound and the compound is part of the alkanol family of the organic compounds. In this case we are trying to find the equation that shows the enthalpy of the formation of the ethanol.

We know that such equation would have to involve the pure substances that can be combined so as to form the ethanol and the equation for this reaction has been shown in the image attached to this answer.

Learn more about reaction:https://brainly.com/question/28984750

#SPJ1

The completed sentence is given as follows:

As more solvent is added, more dissolves. As some of the solute particles collide with the solid surface, it rejoins the solid crystal.

When maximum solubility is reached, particles are returning to the solid form at the same rate at which they are going into the solution.

Saltwater: Salt: Solvent
Water: Solute

Saltwater- Mixture - Uniform - but, no definite shape. Salt dissolves in water. Salt is best described as a solute.
Soluble: Dissolving

Aqueous Solutions: solutions in which water is the solvent. Water: the universal solvent.

Water is known as the "universal solvent" because it dissolves more compounds than any other liquid. This is critical for all living things on the planet.

It implies that water transports vital chemicals, minerals, and nutrients everywhere it travels, whether through the air, the earth, or our bodies.

Learn more about solvent:
https://brainly.com/question/15185907
#SPJ1

After the reaction is complete, no nitrogen and no hydrogen molecules remain, and 8.00 x 1014 molecules of NH3 are produced.

In the equation, nitrogen and hydrogen react at a high temperature, in the presence of a catalyst, to produce ammonia, according to the balanced chemical equation:N2(g)+3H2(g)⟶2NH3(g)The coefficients of each molecule suggest that one molecule of nitrogen reacts with three molecules of hydrogen to create two molecules of ammonia.

So, to determine how many molecules of ammonia are produced when four nitrogen and nine hydrogen molecules are present, we must first determine which of the two reactants is the limiting reactant.

To find the limiting reactant, the number of moles of each reactant present in the equation must be determined.

Calculations:
Nitrogen (N2) molecules = 4Hence, the number of moles of N2 = 4/6.02 x 1023 mol-1 = 6.64 x 10-24 mol
Hydrogen (H2) molecules = 9Hence, the number of moles of H2 = 9/6.02 x 1023 mol-1 = 1.50 x 10-23 mol

Now we have to calculate the number of moles of NH3 produced when the number of moles of nitrogen and hydrogen are known, i.e., mole ratio of N2 and H2 is 1:3.

The mole ratio of N2 to NH3 is 1:2; thus, for every 1 mole of N2 consumed, 2 moles of NH3 are produced.
The mole ratio of H2 to NH3 is 3:2; thus, for every 3 moles of H2 consumed, 2 moles of NH3 are produced.
From these mole ratios, it can be observed that the limiting reactant is nitrogen.

Calculation for NH3 production:
Nitrogen (N2) moles = 6.64 x 10-24 moles
The mole ratio of N2 to NH3 is 1:2; therefore, moles of NH3 produced is 2 × 6.64 × 10−24 = 1.33 × 10−23 moles.

Now, to determine how many molecules of NH3 are produced, we need to convert moles to molecules.
1 mole = 6.02 x 1023 molecules
Thus, 1.33 x 10-23 moles of NH3 = 8.00 x 1014 molecules of NH3 produced.

To find the amount of each reactant remaining after the reaction is complete, we must first determine how many moles of nitrogen are consumed, then how many moles of hydrogen are consumed, and then subtract these from the initial number of moles of each reactant.

The moles of nitrogen consumed = 4 moles × 1 mole/1 mole N2 × 2 mole NH3/1 mole N2 = 8 moles NH3
The moles of hydrogen consumed = 9 moles × 2 mole NH3/3 mole H2 × 2 mole NH3/1 mole N2 = 4 moles NH3
Thus, the moles of nitrogen remaining = 6.64 × 10−24 mol – 8 × 2/3 × 6.02 × 10^23 mol-1 = 5.06 × 10−24 mol
The moles of hydrogen remaining = 1.50 × 10−23 mol – 4 × 2/3 × 6.02 × 10^23 mol-1 = 8.77 × 10−24 mol

Finally, the number of molecules of each reactant remaining can be calculated as follows:
Number of N2 molecules remaining = 5.06 × 10−24 mol × 6.02 × 10^23 molecules/mol = 3.05 × 10−1 molecules ≈ 0 molecules
Number of H2 molecules remaining = 8.77 × 10−24 mol × 6.02 × 10^23 molecules/mol = 5.28 × 10−1 molecules ≈ 0 molecules.

For more such questions on molecules

https://brainly.com/question/24191825

#SPJ8

a) top=16 -- bottom=8 -- O Oxygen

b) top=19 -- bottom=9 --  F Fluorine

c) top=23 -- bottom=11 -- Na sodium

d) top=27 -- bottom=13 -- Al Aluminum

For more information on isotopes kindly visit to

https://brainly.com/question/12955625

#SPJ1

To find the molecular mass of ammonia, we have to know its molecular formula.

The molecular formula of ammonia is NH₃, it means that it contains nitrogen and hydrogen.

To calculate the molecular mass of this compound we have to look for the atomic masses of N and H (you can do it using your periodic table or Internet), once we have them, multiply each atomic mass by the subscript of the element in the molecular formula of the compound. In this case, multiply the atomic mass of N by 1 and the atomic mass of H by 3. Finally, add these products.

The atomic mass of N is 14g/mol and the atomic mass of H is 1g/mol.

Find the molecular mass this way:

It means that the molecular mass of ammonia is 17g/mol.

Answer:

B) A drawn bow is released, causing an arrow to fly across the field

Explanation:

Potential energy can be thought of as "potential" to do something. For eg, putting a ball on top of hill causes the ball to have the potential to roll down the hill if released. Here the ball converts the potential energy into kinetic energy (energy of motion) to roll down.

Similarly, the bow has been stretched (potential to fly if released), and when its released, it converts the potential energy into kinetic energy.

The property of water that causes polar water molecules to surround ions, reducing the likelihood of them interacting with other ions, is known as its solvation or hydration ability.

This solvation property is a result of water's high polarity, which arises from its asymmetrical molecular structure and the presence of polar covalent bonds. Water molecules have a partially positive (+) and partially negative (-) end due to the electronegativity difference between oxygen and hydrogen atoms. This polarity enables water molecules to form hydrogen bonds with other water molecules and with polar solutes, such as ions. When ions dissolve in water, the partially positive hydrogen atoms of water molecules are attracted to the negatively charged ions, and the partially negative oxygen atoms of water molecules are attracted to the positively charged ions.

Learn more about the hydrating nature of water here.

https://brainly.com/question/2709403

#SPJ1

The most concentrated solution is 100 ml of a 0.25 m KCl solution. A 0.25 molar (M) solution means that there are 0.25 moles of KCl in every liter of the solution. As the concentration of the solute (KCl) is highest in the 100 mL of a 0.25 M solution, it is considered the most concentrated among the solutions listed.

The concentration of a solution is determined by the amount of solute (KCl in this case) present in a specific volume (100 mL) of the solution.

When conducting experiments, the choice between a dilute or concentrated solution often depends on the goal of the experiment and the properties of the substances being used. In some cases, using a dilute solution may be beneficial to control the reaction rate or reduce potential hazards.

To know more about solution, visit here:

https://brainly.com/question/1616939

#SPJ4

Xeriscaping is a landscaping approach that focuses on conserving water by using drought-tolerant plants and efficient irrigation techniques. The goal is to create a visually appealing and sustainable garden while minimizing water usage.

Successful xeriscaping projects involve several key elements. Firstly, careful plant selection is crucial, opting for species that can thrive in arid conditions without excessive watering. Mulching is used to reduce evaporation and retain soil moisture.

Proper soil preparation, such as improving drainage and adding organic matter, promotes healthier plant growth. Efficient irrigation systems, like drip irrigation or soaker hoses, deliver water directly to plant roots, minimizing wastage.

Additionally, controlling erosion through the use of retaining walls or terracing is important. Lastly, regular maintenance, including appropriate pruning and weed control, ensures the longevity and vitality of the xeriscape garden. Overall, a successful xeriscaping project harmonizes sustainable practices with a beautiful outdoor environment.

For more such questions on Xeriscaping

https://brainly.com/question/12960529

#SPJ11

Heat and matter can both transfer between the system and the surroundings.

Heat is the form of energy that is transferred between two objects that have different temperatures. Heat energy is a form of kinetic energy that is transferred by direct contact and through radiation, convection, and conduction. Heat transfer through conduction is the process of direct contact, such as when a metal spoon is placed in a pot of boiling water. Radiation heat transfer occurs when energy is transferred through electromagnetic waves, like when the sun’s rays heat the Earth. Heat transfer through convection is the process of heat moving through a fluid like air or water. Heat energy is a form of energy that can be used to do work, like heating a home or cooking food.

To learn more about Heat

https://brainly.com/question/30738335

#SPJ1

Answer:

Explanation:

its c. protons and neutron

The formula of the compound is most likely AB2 or A₂B, depending on whether the cations occupy half or all of the tetrahedral voids, respectively. Option 2 or 4.

To determine the formula of the compound, we need to consider the ratio of the cations to anions in the crystal structure.

In an hcp lattice, each anion is surrounded by six cations in an octahedral arrangement. The tetrahedral voids are located in the gaps between four close-packed spheres and are surrounded by six anions. Each tetrahedral void can accommodate one cation.

Let's consider each option:

LAB: This formula suggests that there is one cation A for every one anion B. However, if we assume that all the tetrahedral voids are occupied by cations, then the ratio of cations to anions would be 2:3, which is not consistent with the formula LAB.

AB2: This formula suggests that there are two cations A for every one anion B. If we assume that half of the tetrahedral voids are occupied by cations, then the ratio of cations to anions would be 2:3, which is consistent with the formula AB2.

ABA: This formula suggests that there is one cation A for every two anions B. If we assume that all the tetrahedral voids are occupied by cations, then the ratio of cations to anions would be 1:1, which is not consistent with the formula ABA.

A₂B: This formula suggests that there are two cations A for every one anion B. If we assume that all the tetrahedral voids are occupied by cations, then the ratio of cations to anions would be 2:1, which is consistent with the formula A₂B.

For more question on formula click on

https://brainly.com/question/1603500

#SPJ11

Answer:

The 3 states of matter are Solid, Liquid, and Gas.

Explanation:

Some phases changes include

Explanation:

molar mass of tetranitrogen dicarbide S4N4= 4×32+4×14

128+56

184 g/mol

no.of moles =given mass/ molar mass

3400= given mass / 184

3400×184 =given mass.

625600 g

Answer:

Organic and inorganic

Explanation:

Answer:

The quantity of heat necessary to change the temperature of 3.00 mol of the substance from 27°C to 227°C is 19.668 KJ

Explanation:

From the question, The empirical equation is

C=29.5J/(mol⋅K)+(8.20×10−3J/(mol⋅K2))T

\(C=29.5J/(mol.K)+(8.20\times 10^{-3} J/(mol.K^{2} ))T\)

Now, to determine the heat necessary to change the temperature of 3.00 mol of this substance from 27∘C to 227∘C, that is ΔQ

From, dQ=nCdT

Integrating both sides, we get

\(\int\limits^ {Q_{2}} _{Q_{1}} {dQ} \, = \int\limits^ {T_{2} }_{T_{1} } nC \, dT\)

\({Q_{2}} -{Q_{1}} = \int\limits^ {T_{2} }_{T_{1} } n[ {29.5J/(mol.K)+(8.20\times 10^{-3} J/(mol.K^{2} ))T} \, ]dT\)

\(\Delta Q = \int\limits^ {T_{2} }_{T_{1} } 3.00mol[ {29.5J/(mol.K)+(8.20\times 10^{-3} J/(mol.K^{2} ))T} \, ]dT\)

\(\Delta Q = \int\limits^ {T_{2} }_{T_{1} } [ {88.5J/K+ (24.6\times 10^{-3} J/K^{2} )T} \, ]dT\)

\(\Delta Q = \int\limits^ {T_{2} }_{T_{1} } {88.5J/KdT + \int\limits^ {T_{2} }_{T_{1} } 24.6\times 10^{-3} J/K^{2} T} dT\)

\(\Delta Q =(88.5J/K )\int\limits^ {T_{2} }_{T_{1} } dT + (24.6\times 10^{-3} J/K^{2})\int\limits^ {T_{2} }_{T_{1} } T} dT\)

(NOTE: \(\int {dx} = x\) and \(\int\ {x} \, dx = \frac{x^{2} }{2}\) )

Hence, we get

\(\Delta Q =(88.5J/K )({T_{2} }-{T_{1} )+ (24.6\times 10^{-3} J/K^{2}) (\frac{T_{2}^{2} }{2} - \frac{T_{1}^{2} }{2} )\)

From the question, \(T_{1}\) = 27 °C = (27+273) K = 300K

Also, \(T_{2}\) = 227 °C = (227+273) K = 500K

Then,

\(\Delta Q =(88.5J/K )(500K - 300K )+ (24.6\times 10^{-3} J/K^{2}) (\frac{(500K)^{2} }{2} - \frac{(300K)^{2} }{2} )\)

\(\Delta Q =(88.5J/K )(200K )+ (24.6\times 10^{-3} J/K^{2}) (80\times 10^{3} K^{2} )\)

\(\Delta Q =17700J +1968J \\\)

\(\Delta Q =19668J\)

\(\Delta Q =19.668KJ\)

Hence, the quantity of heat necessary to change the temperature of 3.00 mol of the substance from 27°C to 227°C is 19.668 KJ

(NOTE: KJ means Kilo Joules)

Answer:(trick question) once the salt has dissolve  in the water it is no longer visible

Thank you! have an amazing day.

The ionization of the following acids can be represented as:

Tetraoxosulphate (VI) Acid (\(H_{2}SO_{4}\)) ionizes as H+ and SO4^2- ions.

Trioxonitrate (V) Acid (\(HNO_{3}\)) ionizes as H+ and \(NO_{3-}\) ions.

Ethanoic Acid (\(CH_{3}COOH\)) ionizes as H+ and \(CH_{3}COO^{-}\) ions.

Tetraoxosulphate (VI) Acid, also known as sulfuric acid (\(H_{2}SO_{4}\)), ionizes as follows:

\(H_{2}SO_{4}\) → \(H+\) + \(SO_{4}^{2-}\)

In this reaction, sulfuric acid donates two hydrogen ions (H+) to the solution, forming sulfate ions (\(SO_{4}^{2-}\)).

Trioxonitrate (V) Acid, commonly known as nitric acid (\(HNO_{3}\)), ionizes as follows:

\(HNO_{3}\) → \(H+_{}\) + \(NO_{3-}\)

Nitric acid dissociates to release one hydrogen ion (\(H+\)) and a nitrate ion  (\(NO_{3-}\)).

Ethanoic Acid, also known as acetic acid (\(CH_{3}COOH\)), ionizes as follows:

\(CH_{3}COOH\) → H+ + \(CH_{3}COO^{-}\)

Acetic acid donates a hydrogen ion (H+) to the solution, forming an acetate ion (\(CH_{3}COO^{-}\)).

In all cases, the acids dissociate in water, producing hydrogen ions (H+) as positively charged ions and their corresponding anions. The hydrogen ions are responsible for the acidic properties of these substances, while the anions contribute to the overall charge balance in the solution. The ionization of acids allows them to conduct electricity in aqueous solutions and react with other substances.

The question was incomplete. find the full content below:

Indicate the ionization of the following acids,

Tetraoxosulphate (VI) Acid

Trioxonitrate (V) Acid

Ethanoic Acid.​

Know more about ionization here:

https://brainly.com/question/30831422

#SPJ8

Answer:

two components of the same thing

Explanation:

Answer:

c.CH4 < NH3 because the NH bond is more polar than the CH bond.

Explanation:

KBr

Explanation:

lmk if ya need explanation

Answer: KBr

Explanation:

In an ionic compound, the positively charged ions (cations) are written first, followed by the negatively charged ions (anions). The formula for an ionic compound is written using the symbols for the elements involved and the correct subscripts to indicate the ratio of ions in the compound.

In this case, the potassium ion is K+, and the bromine ion is Br-. The potassium ion has a charge of +1, and the bromine ion has a charge of -1. To balance the charges, the formula for the compound must include one potassium ion and one bromine ion. Therefore, the formula for the compound is KBr.

Note that this is the empirical formula for the compound, which represents the simplest whole-number ratio of atoms in the compound. The molecular formula, which represents the actual number of atoms in the molecule, may be different.

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

To determine the temperature at which the tire will burst, we can use the ideal gas law equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Rearranging the equation to solve for temperature, we have:

T = PV / (nR)

Given that the pressure threshold for bursting is 1.4 x 10^3 kPa, the volume is 30 L, and the number of moles of air is 2.5 mol, we can substitute these values along with the ideal gas constant R = 8.314 J/(mol K) into the equation.

T = (1.4 x 10^3 kPa) * (30 L) / (2.5 mol * 8.314 J/(mol K))

Converting kPa to Pa and L to m^3, and simplifying the equation, we find:

T ≈ 20,993 K

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

For more question on temperatures

https://brainly.com/question/4735135

#SPJ8

Answer:

b. 2.8

Explanation:

To determine the amount of copper produced, we need to first balance the chemical equation for the reaction between copper sulfate and zinc. The balanced equation is as follows:

Zn + CuSO4 → ZnSO4 + Cu

From the balanced equation, we can see that 1 mole of zinc (Zn) reacts with 1 mole of copper sulfate (CuSO4) to produce 1 mole of copper (Cu). The molar mass of zinc is 65.38 g/mol, and the molar mass of copper is 63.55 g/mol.

Given that 2.9 g of zinc is consumed, we can calculate the moles of zinc:

moles of zinc = mass of zinc / molar mass of zinc

= 2.9 g / 65.38 g/mol

≈ 0.0443 mol

Since the reaction is 1:1 between zinc and copper, the moles of copper produced will be the same as the moles of zinc consumed. Therefore, 0.0443 mol of copper is produced.

Now, we can calculate the mass of copper:

mass of copper = moles of copper × molar mass of copper

= 0.0443 mol × 63.55 g/mol

≈ 2.81 g

Therefore, the correct answer is b. 2.8 g

chatgpt

The balanced equation for the reaction is:

Zn + CuSO4 -> ZnSO4 + Cu

This means that 1 mole of zinc reacts with 1 mole of copper sulfate to produce 1 mole of zinc sulfate and 1 mole of copper.

The molar mass of zinc is 65.38 g/mol, and the molar mass of copper is 63.55 g/mol.

Therefore, 2.9 g of zinc is equivalent to 0.044 moles of zinc.

This means that 0.044 moles of copper will be produced.

The molar mass of copper is 63.55 g/mol, so 0.044 moles of copper is equivalent to 2.8 g of copper.

Therefore, 2.8 g of copper will be produced.

So the answer is (b).

bardAI

At 25 °C a solution having a pOH of 2.33. The [H₃O⁺] of the solution is 2.08 × 10⁻¹² M, and the solution is basic.

To find the [H₃O⁺] of the solution, we first need to use the relationship between pH and pOH;

pH + pOH = 14

Rearranging the equation, we get;

pH = 14 - pOH

Substituting the given value of pOH into equation, we have;

pH = 14 - 2.33 = 11.67

Next, we use the relationship between pH and [H₃O⁺];

pH = -log[H₃O⁺]

Substituting the value of pH we just calculated, we have;

11.67 = -log[H₃O⁺]

Taking the antilog of both sides, we get;

[H₃O⁺] = 2.08 × 10⁻¹² M

Therefore, the [H₃O⁺] is less than 1 × 10⁻⁷ M, the solution is basic.

To know more about pOH here

https://brainly.com/question/480457

#SPJ1