Ni(NO3)2*6H2O + KSCN + PPh3 =_____

Given: Volume of solution, V = 10 mLConcentration of solution, C = 0.5 mol/L.

With this, we can convert the volume from mL to L by dividing it by 1000. Therefore,V = 10 mL = 10/1000 L = 0.01L. Now, we can use the formula: n = C x V where,n = number of moles C = concentration of solutionV = volume of solution. Plugging in the values, we get,n = 0.5 mol/L x 0.01 L= 0.005 mol. In chemistry, mole is defined as a unit for measuring amount of substance. The symbol used for mole is 'mol'. This unit helps to express the number of particles in a sample of substance. For instance, one mole of a substance contains 6.022 x 10²³ particles of that substance.A solution is a homogeneous mixture of two or more substances. The concentration of a solution refers to the amount of solute present per unit volume of the solution. It is usually expressed in moles per litre (mol/L) or molarity.

Molarity is defined as the number of moles of solute present in one litre of solution. It is given by the formula:M = n/Vwhere,M = molarity of the solutionn = number of moles of solute presentV = volume of the solution in litresIn the given question, we are given the volume of solution and its concentration. Therefore, we can use the formula:M = n/Vto find the number of moles of HCl present in 10 mL of a solution with a concentration of 0.5 mol/L. There are 0.005 moles of HCl present in 10 mL of a solution with a concentration of 0.5 mol/L.

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Explanation:

when in equilibrium condition the total sum of anti clockwise moment is equal to the sum of clock wise moment

Answer:

Newton's First Law of Motion states that in order for the motion of an object to change, a force must act upon it. This is a concept generally called inertia.

Newton's Second Law of Motion defines the relationship between acceleration, force, and ​mass.

Newton's Third Law of Motion states that any time a force acts from one object to another, there is an equal force acting back on the original object. If you pull on a rope, therefore, the rope is pulling back on you as well.

Explanation:

Answer: The amount of heat absorbed is 141.004 kJ.

Explanation:

In order to calculate the amount of heat released while converting given amount of steam (gaseous state) to ice (solid state), few processes are involved:

(1): \(H_2O (s) (-25^oC, 248K) \rightleftharpoons H_2O(s) (0^oC,273K)\)

(2): \(H_2O (s) (0^oC, 273K) \rightleftharpoons H_2O(l) (0^oC,273K)\)  

(3): \(H_2O (l) (0^oC, 273K) \rightleftharpoons H_2O(l) (100^oC,373K)\)

(4): \(H_2O (l) (100^oC, 373K) \rightleftharpoons H_2O(g) (100^oC,373K)\)

Calculating the heat absorbed for the process having the same temperature:

\(q=m\times \Delta H_{(f , v)}\)       ......(i)

where,

q is the amount of heat absorbed, m is the mass of sample and \(\Delta H_{(f , v)}\) is the enthalpy of fusion or vaporization

Calculating the heat released for the process having different temperature:

\(q=m\times C_{s,l}\times (T_2-T_1)\)      ......(ii)

where,

\(C_{s,l}\) = specific heat of solid or liquid

\(T_2\text{ and }T_1\) are final and initial temperatures respectively

We are given:

\(m=46g\\C=2.108J/g^oC\\T_2=0^oC\\T_1=-25^oC\)

Putting values in equation (i), we get:

\(q_1=46g\times 2.108J/g^oC\times (0-(-25))\\\\q_1=2424.2J\)

We are given:

\(m=46g\\\Delta H_{fusion}=334J/g\)

Putting values in equation (i), we get:

\(q_2=46g\times 334J/g\\\\q_2=15364J\)

We are given:

\(m=46g\\C=4.186J/g^oC\\T_2=100^oC\\T_1=0^oC\)

Putting values in equation (i), we get:

\(q_3=46g\times 4.186J/g^oC\times (100-0)\\\\q_3=19255.6J\)

We are given:

\(m=46g\\\Delta H_{vap}=2260J/g\)

Putting values in equation (i), we get:

\(q_4=46g\times 2260J/g\\\\q_4=103960J\)

Calculating the total amount of heat released:

\(Q=q_1+q_2+q_3+q_4\)

\(Q=[(2424.2)+(15364)+(19255.6)+(103960)]\)

\(Q=141003.8J=141.004kJ\)                  (Conversion factor: 1 kJ = 1000J)

Hence, the amount of heat absorbed is 141.004 kJ.

The statements which true about distillation boiling point determination are:

Distillation is the process which happens when a liquid sample is volatilized to produce a vapor which is subsequently condensed to a liquid richer in the more volatile components of the initial sample. It is symbolized at its simplest when steam from a kettle turns deposited as drops of distilled water on a cold surface.

Regarding the distillation boiling point determination, the temperature at where a liquid's vapor pressure reaches equilibrium with atmospheric pressure is called the liquid's boiling point. To accomplish distillation at decreased pressure, it is needed to record the external pressure. The sample have to be as pure as is practical. When the contaminants are dissolved, the liquid's boiling point increases. Thus, the recorded boiling point will not be exact. And to measure temperature changes properly, the thermometer's tip has to be placed in the liquid.

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Answer:

See Explanation

Explanation:

Evaporation is an endothermic process, an endothermic process is one in which energy is absorbed from the surrounding thereby making the system to be at a lower temperature compared to the environment.

Being an exothermic process, molecules take away energy from the liquid surface as they escape from the liquid surface hence, evaporation causes the temperature of the water to be decreased below room temperature.

The rate of evaporation and cooling depends on the surface area of liquid. The liquid in the wide and shallow container has a greater rate of cooling because it has a greater surface area than the liquid in the narrow and deep container.

Answer:

A) producers use it.

Explanation:

producers have to make their own food. so they use photosynthesis to make glucose for them to eat.

Answer: the answer is

Explanation: Bc is a very popular emoji

ug/min/ml stands for micrgram per min per millilitre.ug/min/ml is generally used in the field of pharmacokinetics.To generally measure the mean concentration of any drug. These parametres are highly quantitative thus the chances of error is really high.

The units in which pharmacokinetic concepts are represented are a characteristic of the words' definitions and have an impact on the results of numerical calculations.

Consistency in symbol usage would minimise errors that might occur when interpreting values presented for different terms. The specific meaning of a phrase or concept as defined can frequently be clarified by carefully considering the units associated with it.To convert 1 ug/min/ml to mg/h L, the following is the calculation:1 ug/min/ml = 60 ug/h/L1 ug/min/ml = 0.00006 mg/h/L.Thus, 1 ug/min/ml is equal to 0.00006 mg/h/L.

Therefore, the answer is 0.00006.

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Answer:

a) Barney wants to repeat the rutheford experiment

b) the element will be in row 8 column 1 being an alkali metal

c) it should be a radioactive element, with a lot of mass

Explanation:

n this exercise they indicate that the particle Gz has atomic number 119 and atomic mass 305 amu, when reviewing the element periodicity table with this atomic number it has not yet been discovered, it should be in row 8 column 1 therefore it should be an alkali metal .

Therefore, it has only one electron in its last orbit.

a) Barney wants to repeat the rutheford experiment

b) the element will be in row 8 column 1 being an alkali metal

c) it should be a radioactive element, with a lot of mass

371.2 g ,The maximum mass of a product that can be produced in a chemical process is known as the theoretical yield. The balanced chemical equation can be used to calculate it. the limiting reactant's mass and relative formula mass, and. the product's relative formula mass.

The quantity of moles of a product created in relation to the amount of reactant consumed during a chemical reaction is measured in chemistry as yield, also known as reaction yield.

The maximum mass of a product that can be produced in a chemical process is known as the theoretical yield. The balanced chemical equation can be used to calculate it. the limiting reactant's mass and relative formula mass, and. the product's relative formula mass.

The following formula represents the theoretical yield of our reaction: grams product = grams reactant x (1 mol reactant/molar mass of reactant) x (mole ratio product/reactant) x (molar mass of product/1 mol product). The molar mass of H2 gas is equal to 2 grams.

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the study of quantitative relationships involved in chemical reactions C. Stoichiometry

Stoichiometry is the study of quantitative relationships involved in chemical reactions. It is a branch of chemistry that deals with the calculation of relative quantities of reactants and products in a chemical reaction, based on the balanced chemical equation. These calculations are essential for determining the number of substances needed for a reaction or the amount of products that can be obtained from a reaction.

A key aspect of stoichiometry is the conservation of mass, which states that the total mass of reactants must equal the total mass of products in a chemical reaction. This principle helps scientists predict the number of reactants needed or products formed in a reaction.

In stoichiometry, chemical equations are used as the basis for calculations. A chemical equation represents a chemical reaction and includes the chemical formulas of reactants and products, along with their coefficients to balance the equation. These coefficients indicate the stoichiometric ratio, or the ratio of molecules, atoms, or ions involved in the reaction.

Reactant refers to  substances that participate in a chemical reaction and are transformed into products. In stoichiometry, knowing the number of reactants is crucial for predicting the amount of products formed.

Theoretical yield is the maximum amount of product that can be obtained from a reaction, based on the stoichiometric ratios and the number of reactants available. It is an important concept in stoichiometry, as it helps scientists estimate the efficiency of a reaction and optimize reaction conditions. Therefore the correct option is C

The Question was Incomplete, Find the full content below :

It is the study of quantitative relationships involved in chemical reactions.

A. chemical equations

B. reactant

C. stoichiometry

D. theoretical yield

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The most appropriate reagent for converting cyclopentanol to cyclopentanone is the Jones reagent.

The oxidation of cyclopentanol to cyclopentanone involves the removal of two hydrogen atoms from the alcohol group, resulting in the formation of a carbonyl group.

Jones reagent, a mixture of chromic acid (H₂CrO₄) and sulfuric acid (H₂SO₄). This reagent is commonly used for the oxidation of alcohols to corresponding ketones. It is a strong oxidizing agent, facilitates this oxidation process effectively.

It oxidizes the alcohol group to a ketone, converting the -OH group to a carbonyl group (C=O). The reaction proceeds via the formation of an intermediate aldehyde, which is further oxidized to the desired ketone.

Other reagents like PCC (pyridinium chlorochromate) or Swern reagent (dimethyl sulfoxide (DMSO) and oxalyl chloride (COCl)2) can also be used for the oxidation of cyclopentanol to cyclopentanone, but Jones reagent is often preferred for its efficiency and selectivity.

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up right

read the last 3 paragraph you will see the answer

The right answer is true. It is accurate to say that because liquids and solids are almost incompressible, pressure has little impact on their solubility.

We are aware that the concept of compressibility refers to how the study object's qualities can alter simply by applying pressure on it. Whether or not a solid, liquid, or gas can have a solubility that is influenced by the substance's pressure depends on the compressibility factor. We must keep in mind that when we discuss pressure in science, our thoughts must immediately turn to the force per unit area of the substance that is being investigated in each specific example. Because the solid and liquid have a fixed volume while the gas does not, the gas will take on the volume of the container it is carried in, proving that the solid and liquid are less compressible than the gas.

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It is accurate to say that because liquids and solids are nearly incompressible, pressure has minimal impact on their solubility.

Pressure has very little or no impact on how easily particles dissolve in liquid. This is due to the fact that solids and liquids are largely unaffected by changes in pressure due to their incompressibility. The solubility, which depends on gas pressure, is a measurement of the concentration of dissolved gas particles in the liquid. A gas's solubility increases with higher pressure while falling with lower pressure because of an increase in collision frequency. · The solubility of liquids and solids is mostly unaffected by external pressure. The concentration of dissolved gas molecules in the solution at equilibrium is higher at higher pressures because the concentration of molecules in the gas phase rises with increasing pressure.

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Since, intermolecular forces is stronger in a solid than a liquid, then NaCl has stronger intermolecular forces than H2O.

Intermolecular forces exists between molecules of the same or different kinds. Water has a dipole moment hence it can interact effectively with the ions in NaCl. This leads to an ion dipole interaction that results in the dissolution of NaCl in H2O.

NaCl is a solid and water is a liquid. Since intermolecular forces is stronger in a solid than a liquid, then NaCl has stronger intermolecular forces than H2O.

Hence, the best argument that compares the intermolecular interactions in water and NaCl is; salt is a solid and water is a liquid, so water has stronger intramolecular forces.

What does intramolecular forces mean ?

An intramolecular power (or essential powers) is any power that ties together the particles making up an atom or compound, totally unrelated to intermolecular powers, which are the powers present between atoms. The unpretentious distinction in the name comes from the Latin underlying foundations of English with entomb importance between or among and intra meaning inside.Chemical bonds are viewed as intramolecular powers which are frequently more grounded than intermolecular powers present between non-holding particles or atoms.

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Answer:

The electronic configuration of iron is: Ar3d64s2. the two electrons in the 4s orbital are paired, and two of the electrons in the 3d orbitals are paired leaving four unpaired electrons. In general when you are populating the p, d, f, etc

Explanation:

hope dis help

Answer:

She needs 1.19 moles of potassium hydroxide.

Explanation:

Being the molar mass of the elements:

then the molar mass of potassium hydroxide is:

KOH= 39 g/mole + 16 g/mole + 1 g/mole= 56 g/mole

Being the mass of one mole of a substance, which can be an element or a compound, you can apply the following rule of three: if 56 g of KOH are present in 1 mole, 66.48 g of KOH in how many moles of the compound are they?

\(moles of KOH=\frac{66.48 grams*1 mole}{56 grams}\)

moles of KOH= 1.19

She needs 1.19 moles of potassium hydroxide.

Answer:

Speed of jays increases first, again increases, decreases and then increases.

Explanation:

The speed of jays increases while moving from rest to point A and no acceleration due to constant speed. From point A to point B, the speed is continues to increase and no acceleration. From point B to point C, the speed of jays decreases and acceleration is produced in the journey due to change of speed and from point C to point D, the speed of jays again increases and acceleration is produced due to increasing the speed.

Answer:

The speed of jay's walk increases first, again increases, then it decreases and then increases due to his acceleration walk during parts A-D.

Explanation:

Correct option:

Number of atoms is given by option is C, i.e. \(1.20\times10^{24}\,atoms\).

Calculation of number of atoms:

As, mole tells about the amount of substance.

Chemical units known as moles are employed to calculate the mass or molecular mass of a compound, molecule, or atom. For instance, there is one mole in 12 grams of carbon.

\(1 mole= 6.022\times10^{22}\,atoms/molecules/ions\)

Molecular mass of Mg= 24.30 g/mol

Given weight of Mg= 48.60 g

Atoms present in 48.60 g= ?

\(6.022\times10^{23}= N_A\)(Avogadro's number)

\(n=\frac{m}{M}=\frac{Given\,number\,of\,atoms}{N_A}\\\\\frac{m}{M}=\frac{N}{N_A}\\\\\frac{48.60}{24.30}=\frac{N}{6.022\times 10^{23}}\\\\ N= 2\times 6.022\times10^{23}\\N= 12.044\times10^{23}\,atoms\)

\(N= 1.2\times10^{24}\,atoms\,of\,Mg\)

So, the correct option is C.

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Answer: C

Explanation: 1.20 x 10^24 atoms

The diameter (in pm) of the metal atom is 312.54 pm

Atoms are organized in a cube to form a face-centered cubic unit cell structure, with six extra complete atoms placed in the center of each cube face and a fraction of an atom at each of the cube's four corners. The atoms in the cube's corner are shared by eight more unit cells.

We must apply the equation for a face-centered cubic laticce to respond to this question:

Edge length = 8 R

where R is the atom's radius.

Replacing:

442pm = √8 R

The atom's radius is R = 156.27pm.

diameter = 2 radii for as.

The metal atom's diameter is:

156.2 x 2 = 312.54 pm

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In any aqueous solution at 25°C, the ionic-product of water (Kw) is a constant value equal to 1.0 x 10⁻¹⁴ mol²/L².

Due to the auto-ionization or self-ionization of water, water molecules dissociate into hydronium ions (H₃O⁺) and hydroxide ions (OH⁻). At 25°C, the Kw is equal to 1.0 x 10⁻¹⁴ mol²/L².

This constant value of Kw plays a crucial role in understanding the acidity and basicity of aqueous solutions. It helps to establish the relationship between the concentrations of hydronium and hydroxide ions, as their product remains constant at a given temperature. The pH and pOH scales are derived from this relationship, providing a convenient method for measuring the acidity or basicity of a solution.

In summary, the ionic-product of water, Kw, remains constant at 1.0 x 10⁻¹⁴ mol²/L² for any aqueous solution at 25°C. This constant is a result of the auto-ionization of water and helps to understand the relationship between hydronium and hydroxide ions in the context of acidity and basicity.

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The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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Answer

A

Explanation

The ionization of HCO₃⁻ in H₂O is:

The general ionization constant, Ka is given as:

Hence, the ionization (Ka) of HCO₃⁻ is equal to:

Option A is the correct answer.

Answer:

H2O

Explanation:

Water has a higher b.p because it contains hydrogen bonding which is stronger than than the dipole-dipole bonds in hydrogen sulfide

Answer:

28 g

Explanation:

d = m/V

m = dV = 10.5 x 56.0 = 28 g

Explanation:

The balanced equation is 2SO2+O2→2SO3

Quantum mechanics is the study of atoms and incredibly tiny particles that are even smaller.

In quantum mechanics, another branch of physics, atomic and subatomic particles are investigated. The primary field of science that deals with the study of atoms and molecules is chemistry. By utilizing their knowledge of atoms, chemists create molecules that resemble drugs. A distinction is established between atomic physics, which studies the atom as a system made up of a nucleus and electrons, and nuclear physics, which explores nuclear reactions and special properties of atomic nuclei. Three subatomic particles make up matter: protons, neutrons, and electrons. The only subatomic particles that have electrical charges are protons and electrons, with protons having a positive charge and electrons having a negative charge.

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The molecular formula of Ascorbic acid is C6H8O6 having the molar mass of 176.14 g/ mole.

Ascorbic acid is known as the chemical name for Vitamin C. Ascorbic acid is commonly found in high concentrations in citrus fruit. This acid is also found in tomatoes, broccoli, and many other fruits and vegetables. Vitamin C is a nutrient of the body needs to form blood vessels, cartilage, muscle and collagen in bones. This vitamin is also vital to the body's healing process.

A molecular formula is defined as a chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of the compound. This is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule using chemical element symbols and numbers.

A molecule of the ascorbic acid will have a mass of 176.124 atomic mass units.

This is determined by adding 6 X 12.011 for carbon + 8 X 1.008 for hydrogen + 6 X 15.999 for oxygen.

This is equals to the 72.066 for carbon + 8.064 for hydrogen + 95.994 for oxygen. Added together, these equal 176.124 molecular mass.

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Answer:

In half it would go twice as far but the effect of lost kinetic energy is lessened.( I could be wrong)

If the speed of an object is reduced to half then, the kinetic energy decreases to one-fourth of the initial value.

Kinetic energy is the energy generated by virtue of motion of a body. Kinetic energy is directly proportional to the mass and square of the speed of the body.

The equation for kinetic energy is written as  \(K = \frac{1}{2} mv^{2}\) . Thus kinetic energy increases by four folds if we increase speed by double.

Now, if speed reduced to half that is, v changes to v/2 then, the term in equation becomes v²/4. Hence, kinetic energy decreases to one by fourth of its initial value.

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