Solid lithium hydroxide is used to remove exhaled carbon dioxide from
space vehicles by forming lithium carbonate and liquid water. What
mass of carbon dioxide can be absorbed by 12.50 grams of lithium
hydroxide?

Answer:

D. decreasing the temperature inside the container

Explanation:

Edge 2021

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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The cell potential of the cell is obtained as -0.12 V.

Now we know that the cell potential has to do with the difference between the electrode potential of the cathode and the anode. Now we can see that we have the equilibrium constant that have been shown as K as 6.79×10^−3.

Using the formula;

Ecell = 0.0592/n * log K

Where n  the number of electrons transferred in the process. Recall that K is the electrode potential and the Ecell is the cell potential.

Ecell = 0.0592/1 * log  6.79×10^−3

= -0.12 V

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Answer:

4.27 L

Explanation:

STP = 0 C   and   1 atm  

P1V1/T1   = P2V2/T2       where T is in Kelvin

P1 V1 / T1   *T2/P2   = V2

.469 * 5 / ( 273.15-123)  *  273.15/1   = V2 = 4.27 L

The standard deviation of the sample is 0.579, rounded to the correct number of significant figures.

To calculate the standard deviation of the sample, we need to follow these steps:

To find the mean, we sum up all the data points and divide by the number of data points. Let's calculate it:

(3.09 + 4 + 2.775 + 2.5 + 3.80) / 5 = 16.165 / 5 = 3.233

To do this, we subtract the mean (3.233) from each data point and square the result:

(3.09 - 3.233)^2 = 0.020049

(4 - 3.233)^2 = 0.586489

(2.775 - 3.233)^2 = 0.209025

(2.5 - 3.233)^2 = 0.537289

(3.80 - 3.233)^2 = 0.323329

To find the variance, we sum up the squared differences from step 2 and divide by the number of data points:

(0.020049 + 0.586489 + 0.209025 + 0.537289 + 0.323329) / 5 = 1.676181 / 5 = 0.3352362

√0.3352362 = 0.579 (rounded to three significant figures)

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1.5 moles of N2 will be produced when 1.8 moles of NO react.

The equation that balances is displayed below. N2(g)+3H2(g) = 2NH3 (g) Hydrogen will be the limiting reagent if equal moles of each reactant are utilised since it uses up 3 moles for every mole of nitrogen to produce ammonia.

5 N2 + 6 NO 4 NH3 + 6 NO 6 H2O

According to the equation, 6 moles of NO react to produce 5 moles of N2. As a result, we may apply a proportion to determine how many moles of N2 are produced when 1.8 moles of NO react:

(5 mol N2 / 6 mol NO) x 1.8 mol NO = 1.5 mol N2

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Answer:

The Moon has an atmosphere.

Explanation:

The Moon has an atmosphere, but it is very tenuous. Gases in the lunar atmosphere are easily lost to space. Because of the Moon's low gravity, light atoms such as helium receive enough energy from solar heating so that they escape in just a few hours.

Answer: you have to talk to someone who wont mind wanting to wanting to like you a lot like that.

Explanation:  I wish I could be able to talk to someone who would want to get to like me like that, so its a very relatable situation.

Answer:

A chemical bond holds atoms together.

Answer:

Animals need food, water, shelter, and space to survive. Herbivores can live only where plant food is available. Carnivores can live only where they can catch their food. Omnivores can live in many places because they eat both plants and animals.

Due to the relatively narrow range of d-metal radii and the nearly identical sizes of all the metal ions across the series, the d-metals can be combined to create a large variety of alloys.

Since alloys, which are combinations of several elements, offer qualities that are superior to those of pure metals, almost all metals are employed in alloy form. The most common reasons for alloying are to increase strength, improve corrosion resistance, or cut expenses.

D block elements are used to combine other metals in alloys. Due to their huge size, D-lock elements combine with other elements, such as hydrogen, to produce interstitial compounds.

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Answer:

C3H8 + 5O2 = 3Co2 + 4 H2o

Explanation:

we can balance this equation by algebric method ( ABC method)

Answer:

178.5g of NaCl is the maximum amount that can be dissolved

Explanation:

Solubility is defined as the maximum amount of solute that can be dissolved in aAt 20°C, the solubility of NaCl is 35.7g per 100g of water at 20°C. That means the maximum amount that can be dissolved of NaCl is:

500g water * (35.7g NaCl / 100g water) =

Answer: 5.58x10^23 atoms of Al

Explanation:

Here's the math:

I converted grams to mols then mols to atoms.

The kinetic energy of a 23.2-g object moving at a speed of 98.7 m/s is  113.30 J. Option D

The kinetic energy of an object can be calculated using the formula: KE = (1/2)mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity or speed of the object.

Given:

Mass (m) = 23.2 g = 0.0232 kg

Speed (v) = 98.7 m/s

Substituting these values into the formula, we can calculate the kinetic energy:

KE = (1/2)(0.0232 kg)(98.7 m/s)^2

KE = (1/2)(0.0232 kg)(9756.09 m^2/s^2)

KE ≈ 113.30 J

Therefore, the kinetic energy of a 23.2-g object moving at a speed of 98.7 m/s is approximately 113.30 J.

It's worth noting that the question is repeated twice, but the answer remains the same. The kinetic energy of the object is determined by its mass and speed, and both calculations yield the same result. Option D

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Title: The First Amendment: Safeguarding Fundamental Freedoms

While all amendments are crucial, the First Amendment holds unparalleled significance in upholding the principles of liberty, equality, and democracy.

The First Amendment to the U.S. Constitution is undoubtedly the most important amendment as it safeguards fundamental freedoms that form the bedrock of a democratic society.

This amendment, which encompasses the rights of freedom of speech, religion, press, assembly, and petition, plays a vital role in protecting individual liberties and ensuring a just and inclusive society. There are three key reasons why the First Amendment stands out as the cornerstone of our democracy.

Firstly, freedom of speech allows citizens to express their ideas, opinions, and criticisms, fostering a robust marketplace of ideas essential for progress and social change. This right empowers individuals to challenge authority, hold public officials accountable, and engage in meaningful dialogue that drives societal progress.

Secondly, freedom of religion guarantees individuals the right to practice their faith without interference from the state. This principle promotes religious tolerance, diversity, and pluralism, creating a society where individuals can freely worship and live in accordance with their beliefs.

Lastly, freedom of the press ensures an informed citizenry by safeguarding independent journalism. A free press acts as a check on governmental power, exposes corruption, and provides essential information necessary for a functioning democracy.

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A full response is that the molecule with 32.1 g of S and 32 g of O has the empirical formula SO2.

Every compound's empirical formula is the simplest whole-number ratio of all of its atom types. It could occasionally be the same as the compound's molecular formula.

By first calculating the masses of each element contained in a compound, it is possible to experimentally ascertain the complex's empirical formula. Afterward, turning each element's mass into a corresponding mole.

To determine the empirical formula of the compound, we need to find the simplest whole-number ratio of the elements in the compound.

Moles of S = mass of S / molar mass of S

Moles of S = 32.1 g / 32.06 g/mol (molar mass of S)

Moles of S = 1.001 mol

Moles of O = mass of O / molar mass of O

Moles of O = 32 g / 15.99 g/mol (molar mass of O)

Moles of O = 2.001 mol

Moles of S in simplest ratio = 1.001 mol / 1.001 mol = 1

Moles of O in simplest ratio = 2.001 mol / 1.001 mol = 2

The empirical formula of the compound is SO2.

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Answer:

C. Physical weathering.

Answer: C. Physical weathering.

Explanation:

Answer:

D

Explanation:

I'm not 100% sure on this but I am pretty confident that it's D or C I'm 98% sure it's D

I used the results from the first part of the experiment to design a marble run by understanding the principles of potential and kinetic energy.

Kinetic energy is the energy of motion. It is the energy an object has due to its motion. When an object is moving, it has kinetic energy. This energy is dependent on the mass of the object and its velocity. Kinetic energy can be calculated by multiplying the mass of the object by the square of its velocity and then dividing the result by two. Kinetic energy is one of the two main types of energy, along with potential energy. It has the ability to cause change within a system, such as breaking chemical bonds. When an object is at rest, it does not have kinetic energy. However, as soon as it begins to move, it acquires kinetic energy. Kinetic energy can be changed or transferred from one object to another, or from one form to another.

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Answer:

By breaking down glucose into an energy molecule (ATP), so by producing energy which is necessary for the cell's survival.

Explanation:

Answer:

0.355 moldm^-3

Explanation:

Answer:

Nuclear Waste

Explanation:

Unwanted radioactive products formed during nuclear reactions are called nuclear waste. Nuclear waste is a byproduct of nuclear power generation, medical procedures, and other activities that involve the use of radioactive materials. It can include spent nuclear fuel, radioactive liquids, and other radioactive materials that are generated during nuclear reactions.

Nuclear waste is highly radioactive and can pose a risk to human health and the environment if it is not properly managed. It must be stored, transported, and disposed of in a way that minimizes the potential for exposure to radiation and contamination.

Fossil fuels, nuclear fuels, and nuclear reactors are not related to the production of nuclear waste. Fossil fuels are non-renewable energy sources such as coal, oil, and natural gas that are formed from the remains of ancient plants and animals. Nuclear fuels are materials such as uranium and plutonium that are used as fuel in nuclear reactions. Nuclear reactors are facilities that use nuclear fuel to produce electricity through nuclear reactions.

Gas legislation

PV = nRT

where P is atmospheric pressure

Volume (measured in litres)

The number of moles is n.

R = gas constant (0.0821 L atm/(mol K))

Temperature (in Kelvin) equals T.

We need to rearrange the ideal gas law to solve for n:

n = PV / RT

To use this equation, we need to know the pressure, temperature, and volume of the carbon dioxide.

0.002355 moles of carbon dioxide are equal to 235.5 litres of the petrol. As a result, 0.002355 moles of carbon dioxide are equivalent to 0.053 litres.

This is because 1 mole of carbon dioxide is equal to 22.4 litres. This indicates that there are 0.002355 moles of carbon dioxide for every 0.053 litres of carbon dioxide.

Therefore, there are 0.002355 moles of carbon dioxide in 235.5 litres of carbon dioxide.

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At pOH value  of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

In this question we will apply the formula

      pH +pOH = 14 . . . . . . . . . . . . .(1)

where pH = concentration of [\(H^{+}\) ] ion

pOH = concentration of [\(OH^{-}\) ] ion

As per the question

pOH =6.0

Putting the value of pOH in equation (1) we get the value of pH

              pH + 6.0 =14

             pH = 14 -6.0

             pH  = 8.0

 The value of pH if the pOH value is 6.0 is 8.0

To find the concentration of \(H^{+}\) ion we will use the following formula

This is calculated by the formula

                                 [\(H^{+}\)} = \(10^{-pH}\)

where we will write the values of pH

Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)

Therefore at  pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

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The complete question is -

What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?

To produce 5.4 moles of \(Na_{2} O\) in the given reaction, 10.8 moles of NaCl are required.

The given chemical equation is a balanced equation, which means it represents the stoichiometric relationship between the reactants and products involved in the reaction.

The coefficients of the balanced equation represent the number of moles of each reactant and product involved in the reaction.

In this case, the equation is:

2 NaCl + MgO → \(Na_{2} O\) + \(MgCl_{2}\)

From the equation, we can see that 2 moles of NaCl are required to produce 1 mole of . Therefore, to produce 5.4 moles of \(Na_{2} O\), we need to use stoichiometry to determine the amount of NaCl required.

We can use the following formula to calculate the number of moles of NaCl required:

moles of NaCl = moles of \(Na_{2} O\) × (2 moles NaCl / 1 mole \(Na_{2} O\))

Substituting the given values, we get:

moles of NaCl = 5.4 moles \(Na_{2} O\) × (2 moles NaCl / 1 mole \(Na_{2} O\)) = 10.8 moles NaCl

Therefore, we need 10.8 moles of NaCl to produce 5.4 moles of \(Na_{2} O\) in the given reaction.

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Answer: -40

Explanation: Percent error is calculated by subtracting the value you actually recieved from the literature value (175 in your case)  SO your answer should be 135-175=-40.

INFORMATION:

We know that:

- a researcher placed three mice in a maze and recorded the time it took each mouse to complete the maze.

The obtained data is given in the table and, we must select which relationship is best supported by this data.

STEP BY STEP EXPLANATION:

To select the correct relationship, we can analyze each option until we find one that's true.

1. more practice resulted in faster maze completion times for each mouse

If we see the data on the table, we can notice that for mouse 1 the time in which it finished the maze was each time lower (58 sec, 54 sec, 53 sec, 47sec and 42 sec). That means that for mouse 1 more practice resulted in faster maze completion times.

Now, if we analyze mouse 2 and 3, we can see that the times in which they finished the maze were each time lower. So, for the three mouses, more practice resulted in faster maze completion times.

Finally, that is the correct one.

ANSWER:

more practice resulted in faster maze completion times for each mouse

Answer:

Testing of thesis testing is used to determine the plausibility of a thesis.

The test assess the plausibility of the thesis of a sample data.

It occurs through different way, the first step is used to test the state the two suppositions.

In the coming step evaluation of data, third step include carry out plan and dissect the data.

The final step is to dissect the results of the data, it can moreover accept the thesis and reject the null thesis.

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Statements a, b, c, d, and e are correct In context to earths atmosphere.

The most abundant gas in the atmosphere is indeed oxygen, and carbon dioxide is important for plants as it is used in the process of photosynthesis. The troposphere is the layer closest to the Earth's surface and it does shield us from chunks of rock from space. The stratosphere is located 50 to 80 kilometers from Earth's surface and it does contain the ozone layer which protects us from ultraviolet radiation. The troposphere gets colder the higher you go because the temperature decreases with altitude.

Statement f is not correct. The amount of water vapor in the air varies depending on the humidity and temperature. Water vapor is not present in the atmosphere in constant amount.

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Correct question is:

Which statements about Earth’s atmosphere are correct? Check all that apply.

a. The most abundant gas in the atmosphere is oxygen. Carbon dioxide in the atmosphere is important for plants.

b. The troposphere shields Earth from chunks of rock from space.

c. The stratosphere is located 50 to 80 kilometers from Earth’s surface.

d. The troposphere gets colder the higher you go.

e. The ozone in the stratosphere protects us from ultraviolet radiation.

f. The amount of water vapor in the air is nearly constant.