For the following reaction, 0.267 moles of carbon dioxide are mixed with 0.263 moles ofpotassium hydroxide.
What is the formula for the limiting reagent?
What is the maximum amount of potassium carbonate that can be produced?
moles

Answer:

b

Explanation:

Earth's atmosphere is composed of multiple layers of gases surrounding earth. So the correct option is B.

The atmosphere of Earth extends from the planet's surface up to 10,000 kilometres (6,214 miles) above. Following that, the atmosphere disappears into space. Although there is disagreement among scientists on the location of the atmosphere's upper border, most of them can agree that the atmosphere's majority is found near the planet's surface, up to a distance of around eight to fifteen kilometres (five to nine miles).

While most life on Earth requires oxygen, oxygen does not make up the bulk of the planet's atmosphere. About 78% of the gases in the Earth's atmosphere are nitrogen, 21% are oxygen, 0.9 % are argon, and 0.1 % are other gases. The remaining 0.1 per cent of gases includes trace quantities of neon, water vapour, methane, carbon dioxide, and methane.

Based on temperature, the atmosphere is separated into five distinct strata. The troposphere, which is located between five and ten miles (or seven and 15 kilometres) above Earth's surface, is the layer that is closest to the surface. The troposphere is significantly thinner near the North and South Poles than it is at the equator. The troposphere, which makes up between 75 and 80 per cent of the total atmosphere, is where the majority of its mass is located.

Therefore the correct option is B.

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Answer: The best answer is D. The number of moles of a solute per kilogram of solvent

Explanation:

I hope this helps, whereas, the molality doesn't represent moles nor liters.

The 4 principle, orbital, magnetic and spin quantum numbers of Thallium are:

Principal Quantum Number (n)

Orbital Quantum Number (l)

Magnetic Quantum Number (m)

Spin Quantum Number (s)

Valence electrοns are the electrοns that are present in the οutermοst shell οr energy level οf an atοm. These electrοns are invοlved in chemical bοnding and are respοnsible fοr the chemical prοperties οf an element. The number οf valence electrοns in an atοm determines its valency, which is the ability οf an atοm tο cοmbine with οther atοms tο fοrm cοmpοunds.

The fοur quantum numbers fοr Thallium can be determined frοm this electrοnic cοnfiguratiοn as fοllοws:

Principal Quantum Number (n):  This quantum number defines the energy level οr shell in which the electrοn is present. In the case οf Thallium, the valence electrοn is present in the fifth shell, therefοre the principal quantum number is 5.

Orbital Quantum Number (l):  This quantum number describes the subshell οr the type οf οrbital in which the electrοn is present. The values οf l depend οn the value οf n and range frοm 0 tο (n-1). In the case οf Thallium, the valence electrοn is present in the p subshell οf the fifth shell. Therefοre, the value οf l equates tο 1.

Magnetic Quantum Number (m): This quantum number describes the οrientatiοn οf the οrbital in three-dimensiοnal space. The values οf m range frοm -l tο +l. In the case οf Thallium, the p subshell has three οrbitals with m values οf -1, 0, and +1.

Spin Quantum Number (s): This quantum number describes the intrinsic angular mοmentum οr spin οf the electrοn. The value οf s is always ±½ fοr electrοns. Therefοre, the spin quantum number fοr the valence electrοn οf Thallium is ±½.

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In the balanced chemical equation 2NaOH + \(H2SO4\) → \(Na2SO4\) + \(2H2O\), the stoichiometric ratio between NaOH and \(Na2SO4\) is 2:1. This means that for every 2 moles of NaOH reacted, 1 mole of \(Na2SO4\) is produced. Given that we have 10 moles of NaOH, we can calculate the moles of \(Na2SO4\) using stoichiometry.

To find the moles of \(Na2SO4\), we divide the moles of NaOH by the stoichiometric coefficient ratio. In this case, it would be:

10 moles NaOH / 2 = 5 moles \(Na2SO4\).

Therefore, 10 moles of NaOH will produce 5 moles of \(Na2SO4\).

In summary, if we start with 10 moles of NaOH and react it according to the balanced equation, we will produce 5 moles of \(Na2SO4\). This calculation is based on the stoichiometric ratio between NaOH and \(Na2SO4\) in the chemical equation.

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If the absorbance of the 200 μm solution is 0. 885, then the absorbance of the 25μm is 0.221.

Absorbance (A) is also known by the optical density (OD).

Absorbance is the capacity of a solution to absorb quantity of light.

And Transmittance is the quantity of light which is passes through a solution.

As we know that,

Absorbance / Concentration = Constant

That means, absorbance is directly proportional to the concentration

Therefore,

0.885/ 200 μm = x / 25 ,

where,

x is the absorbance at 25μm.

Calculating all values, we get

X = 25( 0.885/ 200 ) = 0.221

Thus, we calculated that the absorbance of the 200 μm solution is 0. 885, then the absorbance of the 25μm is 0.221.

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The pH of the solution, neglecting activities, is approximately 12.26.

To calculate the pH of the solution, we need to consider the dissociation of water, as well as the dissociation of the solutes NaOH and LiNO3. Let's go through the steps:

Step 1: Identify the ions present in the solution:

The solution contains NaOH and LiNO3. NaOH dissociates into Na+ and OH- ions, while LiNO3 dissociates into Li+ and NO3- ions.

Step 2: Write the balanced chemical equations for the dissociation of NaOH and LiNO3:

NaOH dissociates as follows:

NaOH -> Na+ + OH-

LiNO3 dissociates as follows:

LiNO3 -> Li+ + NO3-

Step 3: Calculate the concentration of each ion:

Given that the concentration of NaOH is 0.018 M and LiNO3 is 0.0120 M, the concentration of Na+ and Li+ ions is equal to their respective initial concentrations.

For NaOH:

[Na+] = 0.018 M

[OH-] = 0.018 M (since NaOH dissociates in a 1:1 ratio)

For LiNO3:

[Li+] = 0.0120 M

[NO3-] = 0.0120 M (since LiNO3 dissociates in a 1:1 ratio)

Step 4: Calculate the concentration of H+ ions:

Since we have the concentrations of OH- ions, we can use the fact that water undergoes auto-ionization to determine the concentration of H+ ions.

[H+] = Kw / [OH-]

At 25°C, the value of Kw (the ion product of water) is approximately 1.0 x 10^-14.

[H+] = (1.0 x 10^-14) / (0.018)

Using a calculator, we find that the concentration of H+ ions is approximately 5.56 x 10^-13 M.

Step 5: Calculate the pH:

pH = -log[H+]

pH = -log(5.56 x 10^-13)

Using a calculator, we find that the pH of the solution neglecting activities is approximately 12.26.

Now, let's consider the re-calculation of pH using activities:

To re-calculate the pH using activities, we need additional information, such as activity coefficients for the ions present. However, the given question does not provide the necessary activity coefficients or any other information required for activity calculations. Therefore, it is not possible to re-calculate the actual pH of the solution using activities without that information.

In summary:

The actual pH of the solution considering activities cannot be determined without additional information, such as activity coefficients.

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Answer:

Phosphorus

Explanation:

Answer:

GROUP 16

Explanation:

Answer:

group 2

Explanation:

50 POINTS?!!!!!!

Answer:

cinder cone: made of pieces of lava

shield volcano: wide summit, gentle slope

volcanic soil: rich in nutrients

caldera: bowl shaped depression

lava plateau: material fills in valleys

Explanation:

it’s right

Answer:

Caldera, Bowl-Shaped depression

Shield volcano, Wide summit, Gentle slope

Lava plateau, Material fills in valleys

Volcanic soil, Rich nutrients

Cinder Cone, Made of pieces of lava

Explanation:

Got it right on edge

The best explanation for the phenomenon of a prism dispersing white light into a spectrum is that different frequencies of visible light move at different speeds inside the prism. This is known as the process of refraction.

The correct option is D.

Dispersion of light is the separation of white light into its component colors.

When white light enters a prism, the different colors (wavelengths) that make up white light refract, or bend, at slightly different angles as they pass through the prism.

This is due to the fact that different colors of light have different refractive indices or the degree to which light bends as it passes through a medium. This means that each color of light is separated, forming a spectrum of colors that ranges from red to violet.

This effect can be seen in everyday life, such as in a rainbow, which is formed when sunlight is refracted by water droplets in the air.

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Answer:

the mirror forms a virtual inlarged image

Explanation:

Answer:

If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase. ... Gay-Lussac's law states that at constant volume, the pressure and temperature of a gas are directly proportional.

Explanation:

i hope this helped

Answer:

pick the second one I've done that test

Answer:

Criminology analyzes how crime affects the community or society as a whole , while forensic science analyzes individual crimes and evidence.

Answer:

D) Previous models

Got it right on USTestPrep

Answer:

previous models

Explanation:

I did it

In the below equations, (s) indicates the solid phase and (aq) indicates the aqueous phase. When writing balanced chemical equations, it is important to follow the law of conservation of mass. It means that the mass of the reactants must be equal to the mass of the products formed.

The chemical equations for the following reactions occurring in aqueous solutions are:

1. Sodium Carbonate + Calcium Chloride:

Na2CO3 (aq) + CaCl2 (aq) → 2NaCl (aq) + CaCO3 (s)

2. Lead (II) Nitrate + Lithium Chloride:

Pb(NO3)2 (aq) + 2LiCl (aq) → 2LiNO3 (aq) + PbCl2 (s)

3. Iron (III) Chloride + Sodium Hydroxide:

FeCl3 (aq) + 3NaOH (aq) → 3NaCl (aq) + Fe(OH)3 (s)

4. Ammonium Iodide + Silver Nitrate:

NH4I (aq) + AgNO3 (aq) → AgI (s) + NH4NO3 (aq)

5. Barium Nitrate + Aluminum Sulphate:

Ba(NO3)2 (aq) + Al2(SO4)3 (aq) → 2Al(NO3)3 (aq) + 3BaSO4 (s)

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Answer:

well all living things made up of objects

Explanation:

Hope this helps:)

All living things and objects best describe matter.

Matter is a substance which is made up of various types of particles  which occupy space and have inertia . All living things and objects  are made up of various types of particles  that occupy space and have inertia .

Depending on temperature and other factors matter is able to exist in different phases. Most common of which are solid, liquid and gas. Matter can exist in more than one state depending on the temperature  and pressure .

State of matter can be changed  by heating or cooling and even by changing the applied pressure.When a state changes matter does not break rather its state changes though its chemical composition remains same.

Physical characteristics of matter are shape, color, size and temperature. Every matter is made up of elements which  cannot be broken down further by ordinary chemical reactions.

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1) To react with 0.460 mole of SO₂, 1.15 moles of C are needed.

2) When 2.0 moles of C reacts, 1.6 moles of CO are produced.

3) To produce 0.35 mole of CS₂, 0.70 moles of SO₂ are required.

4) When 2.4 moles of C reacts, 0.48 moles of CS₂ are produced.

1.

From the balanced equation, the stoichiometric ratio between C and SO₂ is 5:2. Therefore, to calculate the moles of C required, we can set up a proportion:

(5 moles C / 2 moles SO₂) = (x moles C / 0.460 moles SO₂)

Solving for x, we find:

x = (5/2) × 0.460 = 1.15 moles C

2.

From the balanced equation, the stoichiometric ratio between C and CO is 5:4. Therefore, to calculate the moles of CO produced, we can set up a proportion:

(5 moles C / 4 moles CO) = (2.0 moles C / x moles CO)

Solving for x, we find:

x = (4/5) × 2.0 = 1.6 moles CO

3.

From the balanced equation, the stoichiometric ratio between SO₂ and CS₂ is 2:1. Therefore, to calculate the moles of SO₂ required, we can set up a proportion:

(2 moles SO₂ / 1 mole CS₂) = (x moles SO₂ / 0.35 moles CS₂)

Solving for x, we find:

x = (2/1) × 0.35 = 0.70 moles SO₂

4.

From the balanced equation, the stoichiometric ratio between C and CS₂ is 5:1. Therefore, to calculate the moles of CS₂ produced, we can set up a proportion:

(5 moles C / 1 mole CS₂) = (2.4 moles C / x moles CS₂)

Solving for x, we find:

x = (1/5) × 2.4 = 0.48 moles CS₂

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Answer:

Grignard reagents are formed by the reaction of magnesium metal with alkyl or alkenyl halides. They're extremely good nucleophiles, reacting with electrophiles such as carbonyl compounds

Explanation:

hope this helps!

Option D is correct All remained the same Here, a variety of "systems" were put to the test.

Throughout an experiment, the control variable is constant. In an experiment, the independent variable is changed in an effort to change the experiment's dependent variable. In order to ensure that the effects on the dependent variable are definitely caused by changes in the independent variable, the control variable is kept constant.

The gas constant can be expressed using the values and units listed below. The values of the gas constant R are typically listed under "Physical Constants" in textbooks and handbooks because it is a constant that applies to all gases without exception. When the temperature remains constant, the pressure of a gas is inversely proportional to its volume. When the temperature is constant, the product of pressure and volume is constant. This relationship is known as Boyle's law or Mariette's law.

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Explanation

Kinetic energy is a modality of energy present in all moving bodies. According to the SI, its unit of measurement is the joule. Furthermore, this energy is a scalar quantity that has exclusively positive values.

Kinetic energy is proportional to the square of the body's velocity. Thus, if the speed of a body double, its kinetic energy will increase four times, if the speed of a body triple, then this increase will be nine times.

Answer

Kinect energy tells us how fast the reaction will proceed.

Answer:

Globular clusters are densely packed collections of ancient stars. Roughly spherical in shape, they contain hundreds of thousands, and sometimes millions, of stars. Studying them helps astronomers estimate the age of the universe or figure out where the center of a galaxy lies.

Explanation:

Answer:

I can’t see the whole page

Explanation:

Answer:

\(d.blood\)

Explanation:

Hope it helps!!!

Answer: 5.6L

Explanation:

Just did it on an assignment

A 3.5L flexible container holds a gas at 250K. The new volume will be 5.6 L, if the temperature is increased to 400K.

Charles law is an ideal gas law which states that at a constant pressure volume of a gas is directly proportional to the absolute temperature.

It is expressed as

\(\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

where,

V₁ = initial volume

T₁ = initial temperature

V₂ = final temperature

T₂ = final temperature

Now put the values in above formula, we get

\(\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

\(\frac{3.5\ L}{250\ K} = \frac{V_2}{400\ K}\)

\(V_{2} = \frac{3.5\ L \times 400\ K}{250\ K}\)

\(V_{2} = \frac{1400}{250}\)

V₂ = 5.6 L

Thus, from the above conclusion we can say that A 3.5L flexible container holds a gas at 250K. The new volume will be 5.6 L, if the temperature is increased to 400K.

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0.00292 mol of HCL would be needed to react with 0.0356 g of Mg.

Mass of mg = 0.0356 g

Molar mass of mg is 24.31 g/mol

moles of mg= 0.0356/24.31

=0.00146moles

Mg+2HCL→MgCl₂ +H₂

From above equation , 1 mol of mg requires 2 mol of HCL

∴ 0.00146 mol of Mg will require =2×0.00146 mol of HCL

=0.00292 mol of HCL.

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The visible band part of the spectrum has a range of wavelengths between 350 - 700 nm. This range of wavelengths is commonly referred to as the visible light spectrum. This range of wavelengths is what allows us to see the colors of the rainbow, as different wavelengths correspond to different colors.

For example, violet has the shortest wavelength, at around 380 nm, while red has the longest wavelength, at around 700 nm. The range of wavelengths in the visible light spectrum is much shorter than the other spectrum bands, such as the infrared spectrum, which has wavelengths between 1 - 1000 micrometers, or the ultraviolet spectrum, which has wavelengths between 10 - 400 nanometers.

These other spectrum bands are outside the range of our visible light spectrum, and are therefore invisible to us.

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Answer:

5-20 mins

Explanation:

The molarity of the NaOH solution is 0.107 M.

To determine the molarity of the NaOH solution, we can use the concept of stoichiometry. From the given information, we know that a 50.0-mL sample of 0.104 M HCl solution requires 48.7 mL of the NaOH solution for neutralization.

In a neutralization reaction between HCl and NaOH, the mole ratio is 1:1. This means that the moles of HCl used are equal to the moles of NaOH present in the solution.

First, we calculate the number of moles of HCl used:

Moles of HCl = Molarity × Volume

Moles of HCl = 0.104 M × 0.0500 L

Moles of HCl = 0.00520 mol

Since the mole ratio is 1:1, the moles of NaOH in the solution are also 0.00520 mol.

Next, we can calculate the molarity of the NaOH solution:

Molarity of NaOH = Moles of NaOH / Volume of NaOH solution

Molarity of NaOH = 0.00520 mol / 0.0487 L

Molarity of NaOH = 0.107 M

Therefore, the molarity of the NaOH solution is 0.107 M.

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