A car with a mass of 800 kg is accelerated with a force of 6000 N. If resisting forces are ignored, what is the acceleration of the car? yen​

Answer:

In PCl5, in addition to equitorial bonds which lie in the same plane ,there are axial bonds. Since it suffers more repulsion it is longer than the other bonds. Also these are weak bondsand therefore these bonds can break easily . Because of these reasons,PCl5 is very reactive.

Bases are the chemical opposite of acids. Acids are defined as compounds that donate a hydrogen ion (H+) to another compound.

Definition of Acids - An acid is any chemical compound which when dissolved in water gives a solution with a hydrogen ion activity greater than in pure water. Bronstead Lowry

Definition of Base - A base is an aqueous substance that can accept hydrogen ions. Bronstead Lowry Definition: A base is any substance which accepts a proton.

Physical Characteristics of Acids - Depending on the temperature, acids can occur in solid, liquid or gaseous form. Taste sour.

Physical Characteristics of Base - Bases feel slippery because of the reaction of the base with the oils of your hand. Frequently solids except ammonia which is a gas. Taste bitter.

Properties of Acids - Electrolytes, conduct electricity (because electrolytes), react with many metals.

Properties of Base - Electrolytes, conduct electricity, ranges from insoluble to so soluble that they can react with water vapor.

Acids are often used to remove rust from metals, as an electrolyte in batteries, for mineral processing, to produce fertilizers and gasoline and as additives in food and beverages. Bases are used primarily in cleaning as dishwashing and laundry detergents, oven cleaners and stain removers.

Here are some differences! Hope this helps, sorry I couldn't think of anything else. ;(

Answer:

I think the answer is EROSION because it has to do with the movement of sediment.

Explanation:

Hope this helps!

Flood waters moving soil from one location to another is called erosion.

Erosion is the process by which soil, rock, and other materials are transported from one place to another by natural forces such as water, wind, and ice.

Therefore, the movement of soil from one location to another due to flood waters is an example of erosion.

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The balanced equation is written as

2HCl + Ca(OH)₂ --> CaCl₂+ 2H₂O. From using the mole ratio, the volume of 0.01154 M HCl needed to titrate 20.00 mL of 0.0125 M Ca(OH)₂ is equals to 43.3 mL.

Mole ratio is defined as a ratio between the number of moles of any two components in a balanced chemical reaction/equation. We have, two components Hydrochloric acid, HCl and calcium hydroxide, Ca(OH)₂ for reaction.

Volume of calcium hydroxide solution

V₁ = 20.00 mL = 0.020 L

Molarity of HCl, M₂ = 0.01154 M

Molarity of Ca(oh)₂, M₁ = 0.0125 M

Chemical reaction/equation for components,HCl + Ca(OH)₂-->CaCl₂+ H₂O

Balanced equation is written as

2HCl + Ca(OH)₂ --> CaCl₂+ 2H₂O

Now, mole ratio of HCl to Ca(OH)₂ is 2:1 that is moles of HCl are two times the mol of Ca(OH)₂ to form the respective products. Let V be the needed volume of hydrochloric acid to titrate Ca(OH)₂ solution. Using the molarity formula, Molarity of Ca(OH)₂ = moles of Ca(OH)₂/volume of Ca(OH)₂

=> 0.0125 mol/L = moles of Ca(OH)₂/0.02

=> moles of Ca(OH)₂ = 0.00025 moles

From mole ratio, moles of HCl are required to neutralize, Ca(OH)₂= 0.00025 moles Ca(OH)₂ (2 moles HCl/1 mole Ca(OH)₂ = 0.0005 moles

Now, using molarity formula for HCl,

M₂ = moles of HCl/Volume of HCl

=> 0.01154 Mol/L = 0.0005 moles/V

=> V = 0.0433 L = 43.3 mL ( 1L = 1000 mL).

Hence, required value of volume is 43.3 mL.

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To prepare a pH 3.90 buffer using 500.0 mL of a 0.250 M Na(HO₂CC)²⁻ solution, you would need to add approximately 0.774 mmol of HCl.

To prepare a buffer at a specific pH, you need to consider the Henderson-Hasselbalch equation:

pH = pKa + log([A⁻]/[HA])

In this case, Na(HO₂CC)²⁻ is the conjugate base (A-) and its acid form (HA) is not mentioned. Let's assume that the acid form is HO₂CCOH. The pKa of this weak acid is not provided, so we'll use a typical pKa value for a carboxylic acid, which is around 4.75.

To achieve a pH of 3.90, we can rearrange the Henderson-Hasselbalch equation as follows:

3.90 = 4.75 + log([A⁻]/[HA])

Simplifying:

-0.85 = log([A⁻]/[HA])

Taking the antilog of both sides:

10^(-0.85) = [A⁻]/[HA]

[A⁻]/[HA] ≈ 0.139

Given that the initial concentration of [A⁻] is 0.250 M, the initial concentration of [HA] can be calculated as:

[HA] ≈ [A⁻] / 0.139 ≈ 0.250 / 0.139 ≈ 1.798 M

Now, to prepare a buffer, we need to add HCl to convert the base (A-) to its acid form (HA). The moles of HCl required can be calculated as:

moles of HCl = (initial moles of [HA]) - (moles of [HA] remaining)

moles of HCl = (initial concentration of [HA] × volume in liters) - (final concentration of [HA] × volume in liters)

moles of HCl = (1.798 M × 0.500 L) - (0.250 M × 0.500 L)

moles of HCl ≈ 0.899 - 0.125

moles of HCl ≈ 0.774 mmol

Therefore, you would need to add approximately 0.774 mmol of HCl to prepare the pH 3.90 buffer.

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Answer:

#2 Empirical formula _Na3S4O9____

Molecular formula ___Na6S8O18__

Explanation:

The dipole for PBr3 is shown in the attachment. PBr3 has non xero dipole moment because bromine atoms can not cancel out dipole moment of each other.

The three bromine atoms in this molecule do not cancel out the dipole moment of each other and molecule shows net dipole moment.it shows that PBr3 is a polar molecule.the partially positive charge surrounded by phosphorus atom and partially negative charged surrounded by bromine atom.

Dipole moment is used to define the symmetry of molecules. PBr3 has the trigonal pyramidal structure. bromine atom has more electronegative value than phosphorus.

Thus, the dipole moment in PBr3 is non zero due to unequal charge distribution.

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The atomic number of an element represents the number of protons in the nucleus. In this case, the atomic number is 6. Therefore, there are 6 protons in the nucleus of this element. The correct answer is B. 6.

The atomic number of an element represents the number of protons in the nucleus. In this case, the atomic number is 6, which means there are 6 protons in the nucleus. The atomic mass is the sum of the number of protons and neutrons in the nucleus. Since the atomic mass is 12.01 and the atomic number is 6, we can subtract 6 from 12.01 to get the number of neutrons. This gives us a neutron count of approximately 6.01.

Therefore, The answer is B. 6 protons are in the nucleus of this element.

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Transverse.

Longitudinal travels in the same direction as medium.

Answer:To determine the number of atoms in 284 grams of methane gas (CH4), we need to use the molar mass of CH4 and Avogadro's number.The molar mass of CH4 is 12.01 + 4(1.01) = 16.05 g/mol.Avogadro's number is the number of particles (atoms, molecules, etc.) in one mole of a substance, and is equal to 6.022 x 10^23 particles/mol.To calculate the number of atoms in 284 grams of CH4, we can use the following steps:Convert the mass of CH4 to moles:Number of moles = Mass / Molar mass

Number of moles = 284 g / 16.05 g/mol = 17.68 molCalculate the number of atoms using Avogadro's number:Number of atoms = Number of moles x Avogadro's number

Number of atoms = 17.68 mol x 6.022 x 10^23 atoms/mol = 1.064 x 10^25 atomsTherefore, there are approximately 1.064 x 10^25 atoms in 284 grams of methane gas (CH4)

Explanation:

14.7 mL of the 0.010 M sodium bromide solution is required to begin the precipitation of copper(I) bromide.

To determine the volume of 0.010 M sodium bromide solution required to begin the precipitation of copper(I) bromide, we need to calculate the number of moles of copper(I) nitrate present in the solution, as well as the number of moles of copper(I) bromide that can be formed.

First, we can calculate the number of moles of copper(I) nitrate:

moles of Cu(NO₃)₂ = mass / molar mass = 0.05135 g / (Cu: 63.55 g/mol + 2xN: 2x14.01 g/mol + 6xO: 6x16.00 g/mol) = 0.000294 mol

Since copper(I) nitrate contains one mole of copper for every two moles of nitrate, we can calculate the number of moles of copper(I) ions:

moles of Cu⁺ = 0.000294 mol / 2 = 0.000147 mol

Copper(I) bromide can be formed by mixing copper(I) ions with bromide ions in a 1:1 molar ratio. Therefore, the number of moles of sodium bromide required to react with all the copper(I) ions can be calculated as:

moles of NaBr = moles of Cu⁺ = 0.000147 mol

Finally, we can calculate the volume of the 0.010 M sodium bromide solution required to provide this amount of moles:

volume of NaBr solution = moles of NaBr / molarity of NaBr solution = 0.000147 mol / 0.010 mol/L = 0.0147 L = 14.7 mL

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Answer:

It will not dissolve in water.

Explanation:

You're welcome

If something is insoluble it means that it will not dissolve in water. Therefore, option B is correct.

Solubility can be defined as the maximum amount of Solute that can dissolve in a known solvent at a particular temperature. By changing the temperature of the solution, we can increase the solubility of a substance. Sparingly soluble solids or liquids can be fully liquified by increasing the temperature.

Solubility depends on the nature of the given solute and the solvent. Substances such as sugar, NaCl, etc dissolve in water while substances such as naphthalene can not dissolve in water.

An insoluble substance can be defined as a substance or solid that will not dissolve in a solvent even after mixing such as sand. For example, Sand, Stones, Oil, Flour, and wax. Examples, of soluble things, are Salt, Sugar, Vinegar, Coffee, and Lemon Juice.

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Answer:

gravitational force.

The lack of periodic flashes of radiation could be due to several reasons.

Firstly, the remnant may not be a pulsar, which is necessary for periodic flashes. Secondly, the orientation of the observer relative to the remnant affects the visibility of the periodicity. If the observer's line of sight does not intersect with the emitted beams of radiation, the periodic flashes may not be seen.

Additionally, intrinsic properties of the pulsar, such as an unusual emission profile or changes in its emission behavior, could lead to the absence of periodicity. Insufficient sensitivity or an inappropriate frequency range of the observation equipment may also prevent the detection of periodic flashes.

Finally, factors like absorption or scattering of radiation by interstellar medium or intervening objects can attenuate or distort the pulsar's radiation, further hindering periodicity visibility.

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Answer:

it is matter cus everything is made up of matter

Explanation:

Answer: yes

Explanation:

Matter makes up everything

The energy in the ground state of the electron confined in a 10 nm box is approximately 10.89 eV, and the energy in the first excited state is approximately 43.56 eV.

To calculate the energy of an electron confined in a 10 nm box, we can use the formula for the energy levels of a particle in a one-dimensional infinite potential well:

E_n = (n^2 * h^2) / (8 * m * L^2)

where:

E_n is the energy of the nth energy level,

n is the quantum number of the energy level (n = 1 for the ground state),

h is the Planck's constant (6.626 x 10^-34 J·s),

m is the mass of the electron (9.10938356 x 10^-31 kg),

L is the length of the box (10 nm = 10 x 10^-9 m).

Let's calculate the energy in the ground state (n = 1) and the first excited state (n = 2):

For the ground state (n = 1):

E_1 = (1^2 * h^2) / (8 * m * L^2)

Substituting the values:

E_1 = (1^2 * (6.626 x 10^-34 J·s)^2) / (8 * (9.10938356 x 10^-31 kg) * (10 x 10^-9 m)^2)

Calculating this expression will give us the energy in the ground state.

For the first excited state (n = 2):

E_2 = (2^2 * h^2) / (8 * m * L^2)

Substituting the values:

E_2 = (2^2 * (6.626 x 10^-34 J·s)^2) / (8 * (9.10938356 x 10^-31 kg) * (10 x 10^-9 m)^2)

Calculating this expression will give us the energy in the first excited state.

Please note that the energies calculated will be in joules (J). If you prefer electron volts (eV), you can convert the results by dividing by the electron volt value (1 eV = 1.602 x 10^-19 J).

Performing the calculations:

For the ground state:

E_1 = (1^2 * (6.626 x 10^-34 J·s)^2) / (8 * (9.10938356 x 10^-31 kg) * (10 x 10^-9 m)^2) ≈ 1.747 x 10^-18 J

For the first excited state:

E_2 = (2^2 * (6.626 x 10^-34 J·s)^2) / (8 * (9.10938356 x 10^-31 kg) * (10 x 10^-9 m)^2) ≈ 6.987 x 10^-18 J

Converting the energies to electron volts (eV):

E_1 ≈ 10.89 eV (rounded to two decimal places)

E_2 ≈ 43.56 eV (rounded to two decimal places)

Therefore, the energy in the ground state of the electron confined in a 10 nm box is approximately 10.89 eV, and the energy in the first excited state is approximately 43.56 eV.

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The energy is required to take a 15.0-g sample of ice at −15.0 °c to liquid water at 45.0 °c is 8.30kj.

The term enthalpy is defined as the sum of the system's internal energy and the product of its pressure and volume.  

Ice warming Cs = 2.09 J/g∙°C

Enthalpy of fusion ∆H = 6.02 kJ/mol

Liquid water warming Cs = 4.18 J/g∙°C

Enthalpy of vaporization ∆H = 40.7 kJ/mol

Steam Warming Cs = 2.01 J/g∙°C

Step 1: Warm ice from −15.0°C to 0°C.

q1 = 470.25 joule

Step 2: Melt ice.

q2 = 5016.66

Step 3: Warm liquid water from 0°C to 45.0°C.

q3 = 2821.5 joule

The total energy is the sum of the energy of each step.

q = q1 + q2 + q3

= 470.25 + 5016.66 + 2821.5

= 8.30kj

Thus, energy is required to take a 15.0-g sample of ice at −15.0 °c to liquid water at 45.0 °c is 8.30kj.

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The number of carbon atoms present in any compound is equal to seven.

Number of carbon atoms present in any compound will be calculated by using the following equation:

No. of Carbon atoms = Relative intensity of M+1 peak / Natural abundance of C13

Intensity of molecular peak = 34.76%

Intensity of M+1 peak = 2.632%

Relative intensity of M+1 peak = (100/34.76)×2.632 = 7.57%

Given that natural abundance of M+1 = 1.07%

On putting values on above equation, we get

No. of C atoms = 7.57 / 1.07 = 7.07 = 7 (approx)

Hence number of carbon atoms is 7.

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Answer:

A dependent valuable is a valuable whose variation depend on another variable usually the independent variable. An independent variable is a variable whose variation do not depend on another variable but the reseacher experimenting.

Answer: Jose is correct because air is a mixture of gases ( both elements and compounds).

Explanation:

An element consist of only one type of atom and a compound made up of 2 or more types of elements joined together ( by ionic or covalent bonds).

Whereas air around us is a mixture of gases (both elements and compounds) like nitrogen, oxygen, argon, and carbon dioxide, and very small amounts of other gases and water vapors

Hence, Jose is correct because air is a mixture of gases ( both elements and compounds).

Answer:

C. Bonds connecting atoms in reactants break and bonds connecting atoms in products form.

The correct equation for the single replacement reaction between bromine (Br2) and calcium iodide (CaI2) can be written as:

Br2 + CaI2 → 2BrI + Ca

In this reaction, bromine (Br2) replaces the iodine (I) in calcium iodide (CaI2), resulting in the formation of bromine iodide (BrI) and calcium (Ca).

To write the balanced equation, we ensure that the number of atoms on both sides of the equation is equal. In this case, we have two iodine atoms on the reactant side, so we need two bromine iodide (BrI) molecules to balance the iodine atoms. The calcium (Ca) atom is already balanced.

Therefore, the balanced equation for the single replacement reaction between bromine and calcium iodide is:

Br2 + CaI2 → 2BrI + Ca

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Answer:

Explanation:

A. Graphite can conduct electricity because of the delocalised (free) electrons in its structure. These arise because each carbon atom is only bonded to 3 other carbon atoms. ... However, in diamond, all 4 outer electrons on each carbon atom are used in covalent bonding, so there are no delocalised electrons.

B. Diamond is hard because the carbon atoms in diamond are bonded in a stronger tetrahedron pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in layers with only weak vanderwall force holding the layers together.

i) The exit water concentration (Xₒᵤₜ) is calculated to be 0.0525 / (Lₒᵤₜ + 0.40) using the given data and the material balance equation for the liquid phase.

ii) The number of real equilibrium stages (N) needed is calculated using the equation N = (ln(0.05 / 0.01)) / (ln[(1 - (0.40 kg/m²·s / 0.40 kg/m²·s)) / (0.40 kg/m²·s / 0.40 kg/m²·s)]).

iii) The minimum flow rate of water (Lₘᵢₙ) required for absorption is calculated using the equation Lₘᵢₙ = (ln(0.05 / 0.01)) / (N - 1), where N is the number of real equilibrium stages.

To solve the given problem, we will calculate the exit water concentration, the number of real equilibrium stages needed, and the minimum flow rate of water required for absorption.

Given data:

Initial ammonia concentration: 5% (volume percent)

Final ammonia concentration: 1% (volume percent)

Water flow rate (L): 0.65 kg/m²·s

Air flow rate (G): 0.40 kg/m²·s

Plate efficiency: 80%

Equilibrium relationship: Y = X

i) Calculate the exit water concentration:

To calculate the exit water concentration, we can use the material balance equation for the liquid phase:

Lᵢₙ * Xᵢₙ + Gᵢₙ * Yᵢₙ = Lₒᵤₜ * Xₒᵤₜ + Gₒᵤₜ * Yₒᵤₜ

Since the equilibrium relationship is given as Y = X, we can rewrite the equation as:

Lᵢₙ * Xᵢₙ + Gᵢₙ * Xᵢₙ = Lₒᵤₜ * Xₒᵤₜ + Gₒᵤₜ * Xₒᵤₜ

We are given the initial ammonia concentration (Xᵢₙ) of 5%, and we need to find the exit water concentration (Xₒᵤₜ) when the ammonia concentration is reduced to 1%.

Using the given data and equation, we can solve for Xₒᵤₜ:

0.65 kg/m²·s * 0.05 + 0.40 kg/m²·s * 0.05 = Lₒᵤₜ * Xₒᵤₜ + 0.40 kg/m²·s * Xₒᵤₜ

Simplifying the equation:

0.0325 + 0.02 = (Lₒᵤₜ + 0.40) * Xₒᵤₜ

0.0525 = (Lₒᵤₜ + 0.40) * Xₒᵤₜ

Xₒᵤₜ = 0.0525 / (Lₒᵤₜ + 0.40)

Therefore, the exit water concentration (Xₒᵤₜ) is 0.0525 / (Lₒᵤₜ + 0.40).

ii) Calculate the number of real equilibrium stages needed:

The number of real equilibrium stages (N) can be calculated using the equation:

N = (Ln - Lₒᵤₜ) / (Lₒᵤₜ - Lₘᵢₙ)

Where:

Ln = Natural logarithm of (Initial ammonia concentration / Final ammonia concentration)

Lₘᵢₙ = Natural logarithm of [(1 - (Gₒᵤₜ / G)) / (Gₒᵤₜ / G)]

Using the given data and equation, we can calculate N:

Ln = ln(5% / 1%) = ln(0.05 / 0.01)

Lₘᵢₙ = ln[(1 - (0.40 kg/m²·s / 0.40 kg/m²·s)) / (0.40 kg/m²·s / 0.40 kg/m²·s)]

N = (ln(0.05 / 0.01)) / (ln[(1 - (0.40 kg/m²·s / 0.40 kg/m²·s)) / (0.40 kg/m²·s / 0.40 kg/m²·s)])

Therefore, the number of real equilibrium stages needed (N) is given by the above equation.

iii) Calculate the minimum flow rate of water (Lₘᵢₙ):

The minimum flow rate of water (Lₘᵢₙ) required for absorption can be calculated using the equation:

Lₘᵢₙ = (Ln - Lₒᵤₜ) / (N - 1)

Using the values obtained in part (ii), we can calculate Lₘᵢₙ.

Therefore, the minimum flow rate of water (Lₘᵢₙ) needed to effect the absorption is given by the above equation.

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Magnesium sulfate, or MgSO₄, weighs 6.68 g, and dissolves about 0. 965 L of the a 0. 0575 M solutions.

A solution is created when a solvent and a solute, two different compounds, are mixed together. When a salt and a solvents is mixed, a solution is created. Commonly, one substance will dissolve in another to create a solution, such as when salt dissolves in water. Nevertheless, a solution can be produced under any state of matter.

Molar mass MgSO₄ = 120.36 g/mol

You have a 0.0575 M solution

That is equal to 6.9207 g/L or 0.0575 mol/L * 120.36 g/mol.

But you want mass in 0.965 L

Mass equals 0.965 L times 6.9207 g/L, or 6.68 g.

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Answer:

I believe is the correct answer

Explanation:

hydrochloric

The concentration of sodium is high outside the cell (extracellular fluid) and the concentration of potassium is high inside the cell (cytoplasm).

Potassium is important for keeping the body hydrated and with sodium support cellular function (sodium-potassium (Na⁺/K⁺) pump).

The sodium-potassium pump releases three Na+ ions, while in the same time two K+ ions exit the cell. For this process one molecule of ATP is consumed.

The sodium and potassium cations move against the concentration gradients.

The sodium-potassium pump keeps a higher concentration of sodium extracellularly and a higher level of potassium intracellularly.

It is very important for many physiological processes in organism.

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Answer:

In naming the transition metal ion, add a Roman numeral in parenthesis after the name of the transition metal ion. The Roman numeral must have the same value as the charge of the ion. In our example, the transition metal ion Fe2+ would have the name iron(II). Add the name of the anion to the transition metal ion.

Explanation:

Answer:

Use the particle model of matter to explain why you can compress a gas easily, but you cannot compress a liquid very easily. The particles in a gas have very large spaces between them, so the particles can be 'squashed' closer together, meaning the gas can easily be compressed to take up a smaller volume.

Explanation: