Calculate the volume that a 0.323mol sample of a gas will occupy at 265K and a pressure of 143kPa.

Explanation:

Divide the distance between the nuclei of the atoms by two if the bond is covalent

The required force is 280 N.

We must subtract our individual forces in order to calculate the net force.

In general, whenever forces act on an object in opposite directions-the net force is equal to the difference between the two forces.

To calculate the net force, one force is subtracted from the other. therefore, here

325 N is force 1 to the right.

45 N is force 2 to the left.

Force 1 - Force 2 is the net force.

net force= 325N - 45N

net force= 280 N

So the required force is 280 N.

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The net force of the runner would be 280 N.

Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!

Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"

h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w

Answer

D. Acid rain reacting with limestone bedrock.

Explanation:

- Brief Description:

- Carbon Dioxide-Bicarbonate-Carbonate Equilibrium

The energy is coming from the battery that is in the torchlight.

In the case of an object in motion, energy is coming from the kinetic energy of the object. Kinetic energy is the energy an object possesses due to its motion. This energy is transferred to the object by an external force, such as a push or a pull, which causes the object to start moving or to change its motion.

Energy is the ability to do work and can take many forms, such as thermal, kinetic, potential, and chemical energy. Energy can be transformed from one form to another and can also be transferred from one object to another.

Therefore, In the case of an object being put into motion, energy is coming from the potential energy of the object. Potential energy is the energy an object possesses due to its position or configuration. This energy is transferred to the object by an external force, such as gravity, which causes the object to start moving or to change its motion.

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When \(CO_{2}\) and \(H_{2} CO_{3}\) are both horizontal lines, the rate of the forward reaction is the same as the rate of the reverse reaction. The reaction is occurring at equilibrium, with no net change in the concentrations of reactants and products over time.

When the concentration of carbon dioxide \(CO_{2}\) and the concentration of carbonic acid \(H_{2} CO_{3}\) are both horizontal lines, it indicates that their concentrations remain constant over time. In such a scenario, the rate of the forward reaction is the same as the rate of the reverse reaction. A horizontal line on a concentration-time graph suggests that the concentrations of the reactants and products are not changing, implying that the reaction has reached equilibrium. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. This is a fundamental principle of chemical equilibrium, described by the principle of microscopic reversibility.

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Answer:

Direct measurement' refers to measuring exactly the thing that you are looking to measure, while 'indirect measurement' means that you're measuring something by measuring something else. For example of direct measurement is weight, distance, and so on.

Explanation:

Hope this helps :)

Filtration is a separation method used to separate out pure substances in mixtures comprised of particles some of which are large enough in size to be captured with a porous material. Particle size can vary considerably, given the type of mixture.

Evaporation is a technique used to separate out homogeneous mixtures that contain one or more dissolved salts. This process drives liquid components out of solid components. This process usually heats the mixture until the liquid is gone.

Distillation is an effective method of separating mixtures of two or more pure liquids. Distillation is a purification process that vaporizes, condenses, and separates the components of a liquid mixture.

Chromatography is the separation of a mixture by passing it in solution or suspension, or as a vapor through a medium in which the components move at different rates. Thin-layer chromatography is a special type of chromatography used for separating and identifying mixtures that are or can be colored especially pigments.

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the equilibrium constant for the given reaction at 298 K is 8.96 x 10^-7.

The equilibrium constant for the given reaction, CIO(g) + O2(g) → Cl(g) + O3(g), at 298 K can be determined using the Gibbs free energy of the reaction and the following equation:ΔG° = - RT lnK

where ΔG° is the standard Gibbs free energy change, R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant.

The equation can be rearranged to solve for K:K = e^(-ΔG°/RT)where e is the natural logarithmic base, and all other variables are the same as in the previous equation.Substituting the given values,

we have:ΔG° = 34.5 kJ/molR = 8.314 J/(mol·K)T = 298 K

Using these values, we get:-

ΔG°/RT = (-34.5 × 10^3 J/mol) / (8.314 J/(mol·K) × 298 K)

= -13.19e^(-ΔG°/RT) = e^(-13.19) = 8.96 × 10^-7

Therefore, the equilibrium constant for the given reaction at 298 K is 8.96 x 10^-7.

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The expression for the solubility product of Ag2CrO4 is given below:

Ag2CrO4 ⇔ 2Ag+ + CrO42-Ksp = [Ag+]2[CrO42-]

Where Ksp denotes the solubility product of Ag2CrO4. The solubility product constant is a measure of the extent to which an ionic compound dissociates into its respective ions in water at a particular temperature. It describes the equilibrium constant of an ionic compound's dissociation in a saturated solution of the same ionic compound. The expression shows that the solubility of Ag2CrO4 is affected by the concentration of Ag+ and CrO42- ions in solution. When these ions reach a specific concentration, the solution becomes saturated and can no longer dissolve more Ag2CrO4.

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you have to drink a lot of water and 67890

Answer:

1. True

2. True

Explanation:

Government expenditure includes all government consumption, investment, and transfer payments

Government revenue is money received by a government from taxes and non-tax sources to enable it to undertake government expenditures

The following nuclear reactions occur: 1h + 9be x + n (a) The resultant isotope of the process is represented by x. (b) 12c + 1h → x (15n + 1h 4he + x) The resultant isotope.

of the process is represented by x. Nuclear reactions are changes to an atom's nucleus that result in the production of new isotopes and/or the release of energy. They can happen naturally or be caused by blasting the nucleus with particles or radiation. Nuclear processes are classified into two types: nuclear fusion and nuclear fission. Nuclear fusion occurs when two light atomic nuclei unite to produce a heavier nucleus, releasing a significant quantity of energy. A heavy nucleus is divided into two lighter nuclei in nuclear fission, releasing a tremendous quantity of energy.

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The combination of four quantum numbers that could be assigned to an electron occupying a 6p orbital is : 6, 1, 0, -1, +1/2.

The four sets of the quantum numbers are :

The electron is in the energy level of 6 so the principal quantum number (n) : n = 6.

The p orbital is associated with angular quantum number denoted by l is : l = 1

The magnetic quantum number (ml) have the values from -l to +l. The possible values are: ml =  -1, 0, +1.

The spin quantum number that is ms can take the values of +1/2 or -1/2.

The combination for n, l, ml, ms is 6, 1, 0, -1, +1/2.

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Answer:

0.024 mm

Explanation:

The quantity of charge deposited Q = It where I = current = 84.780000 mA = 0.084780000 A and t = time = 3.670000 hours = 3.670000 × 3600 s = 132120000 s.

Also Q = nF where n = number of moles of electrons silver deposited and F = Faraday's constant = 96500 C/mol

So, It = nF

n = It/F = 0.084780000 A × 132120000 s/96500 C/mol = 1120.1134 C/96500 C/mol = 0.012 mol

So, we have 0.012 mol of electrons

Our chemical equation is

Ag⁺ + e⁻ → Ag

Since 1 mol of electrons deposits 1 mol of silver atoms, then, 0.012 mol of electrons deposits 0.012 mol of silver atoms.

Since number of moles of silver atoms, n' = m/M where m = mass of silver atoms deposited and M = molar mass of silver = 107.868 g/mol

So, m = n'M

since n' = 0.012 mol,

m = 0.012 mol × 107.868 g/mol = 1.294 g

Since density of silver ρ = m/V where m = mass of silver deposited = 1.294 g and V = volume of silver deposited

V = m/ρ

Since, ρ = 10.650000 g/cm³

V = 1.294 g/10.650000 g/cm3 =

V = 0.122 cm³

Since the dimensions of the measuring rod are 13.870000 x 3.640000 x 5.980000 cm which represent its length, l, width, w and height, h respectively, the volume of silver deposited V = Ah' where A = area of the rod, lw and h' = thickness of silver deposited

So, V = Ah

V = lwh'

h' = V/lw

= 0.122 cm³/13.870000 cm x 3.640000 cm

= 0.122 cm³/50.4868 cm²

= 0.0024 cm

= 0.024 mm

Answer

here hope this helps !

The concentration of carbon dioxide  fluctuated between 150ppm and 250ppm until recently when the concentration rose exponentially. Option B

We know that our planet thrives on a delicate balance of carbon dioxide and oxygen. We also know that this delicate balance have been usurped in the recent times as there are now so much emission of the gas into the atmosphere which have led to the so called global warming.

The amount of the carbon dioxide in the atmosphere began to rise about 200,000 years and has continued to rise as the population is growing and the demand for energy across the would has increased.

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This problem is asking for the grams of ozone that are produced from 3.5 moles of oxygen as it reacts with sunlight. At the end, the result turns out to be 112 g.

In chemistry, stoichiometry is a widely-used tool we use in order to relate the mass and moles of different chemical substances involved in a chemical reaction. In such a way, for this problem, one must consider the following chemical equation between ozone and oxygen:

\(3O_2\rightarrow 2O_3\)

In such a way, our stoichiometric setup must include a 2:3 mole ratio of oxygen to ozone and the molar mass of the latter as 48 g/mol in order to convert its moles to grams as required:

\(3.5molO_2*\frac{2molO_3}{3molO_2}*\frac{48.0gO_3}{1molO_3}\\ \\ =112gO_3\)

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Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

a) To prepare the alkene \(CH_3CH_2CH\)(\(CH_3\))CH=\(CHCH_3\), one could use the Wittig reaction with a phosphorus ylide derived from methyl triphenylphosphonium bromide and butanal.

b) To prepare the alkene (\(CH_3\))2C=\(CHC_6H_5\), one could use the Wittig reaction with a phosphorus ylide derived from methyl triphenylphosphonium bromide and benzaldehyde.

An alkene is a type of organic molecule that contains a carbon-carbon double bond. Alkenes are unsaturated hydrocarbons, meaning that they have fewer hydrogen atoms than their corresponding alkane counterparts. The double bond in an alkene consists of a sigma bond and a pi bond, and the pi bond is responsible for the characteristic reactivity of alkenes.

Alkenes are important in organic chemistry because they can participate in a variety of reactions, such as addition reactions, elimination reactions, and oxidation reactions. Addition reactions involve the addition of a molecule to the double bond, while elimination reactions involve the removal of atoms or groups of atoms from the molecule. Oxidation reactions involve the addition of oxygen atoms to the molecule, which can change its properties and reactivity.

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Answer:

Only 2moles are produced from it

Atomic number of uranium is 92. Thus it contains 92 protons and 92 electrons. When it loses 92 protons the atom formed with 82 protons is lead (Pb).

Uranium is 92nd element in the periodic table. Uranium is an actinide thus classified into the f-block elements. It is a radioactive element and is very unstable.

Actinides such uranium undergo nuclear decay to form stable atoms. The number of electrons and number of protons will be equal in the neutral atom.

Uranium contains 92 protons, when 10 protons are removed it forms an atom with 82 protons. That is lead . Lead is the 82nd element n periodic table.

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Answer:

I'd say Water

Explanation:

The plant absorbs more water through the roots not sure if i'm correct.

Answer:

17.46× 10²³ molecules

Explanation:

Given data:

Mass of acetic acid = 172.90 g

Number of molecules = ?

Solution:

First of all we will calculate the number of moles of acetic acid :

Number of moles = mass / molar mass

Number of moles = 172.90 g/ 60.1 g/ol

Number of moles = 2.9 mol

Now the given problem will solve by using Avogadro number.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

2.9 mol × 6.022 × 10²³ molecules  / 1 mol

17.46× 10²³ molecules

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

Answer:

6.022x10^23

Explanation:

Answer:

2.5.2 Atomistic Configurations of Oxygen in Silicon Crystals

Oxygen atoms are incorporated in the silicon lattice on an interstitial position (denoted by Oi), where the oxygen atom sits in an almost bond-centered position between two adjacent Si atoms [101]. Several of the local vibration modes are infrared (IR) active. The predominant IR line at 1104/cm (at room temperature) was calibrated with respect to other analytical methods, such as gas fusion and several radioactive techniques, and is used as the standard method for the quantitative determination of the oxygen content in as-grown silicon crystals (as-grown silicon usually contains only a negligible amount of precipitated oxygen).

Answer:

Oh, you need to get the blue dots, and move them to the table or graph to plot them!

Hope that makes sense!