Copper is generally used for _______________________.

plasma can be produced artificially in a laboratory but only for a few nanosecond or minutes

Explanation:

in other to maintain plasma reactions you are going to need state of the art technology such as particle accelerators but even those cannot meet the full amounts of keeping plasma reactions stable for a long time the reason for that is because plasma reactions require a lot of energy

Answer:

a number is correct answer 9

Answer:

Think about it. Chemistry is the study of matter.

Explanation:

Anything that has mass and takes up space, and the changes that matter will have when it is in different environments or conditions. Chemistry is used everyday with the development of plastics, wood burning, prescriptions, cosmetics, etc. Everything you touch is made of an element. there's 5 branches of chemistry including Biochemistry, organic chemistry and physical chemistry. -(you find the others).

Chemistry studies our surroundings on a molecular level through atoms and molecules with chemical reactions and understanding the specific properties. There are patterns on the periodic table you should check out.

good luck and have fun!

Answer:

chemistry is the study of structure of substance and what happens to them in different conditions

The square planar complex ion [Ni(NH₃)₃Cl]* can have cis-trans isomers.

The correct option is OD.

Cis-trans isomerism is possible in square planar complexes where two ligands are different and are positioned opposite to each other. In the given options, [Ni(NH₃)₃Cl]* is the only complex ion that meets these criteria.

The complex has three ammonia ligands and one chloride ligand positioned opposite to each other in a square planar geometry. The two possible isomers are the cis- and trans-isomers, which differ in the orientation of the ammonia ligands with respect to the chloride ligand.

In the cis-isomer, the two ammonia ligands are adjacent to each other and are on the same side of the molecule as the chloride ligand. In the trans-isomer, the two ammonia ligands are opposite to each other and are on opposite sides of the molecule with respect to the chloride ligand.

The other given options do not have ligands positioned opposite to each other and thus cannot have cis-trans isomers.

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The main intermolecular forces that act between a water molecule and a hydrogen peroxide (H2O2) molecule are hydrogen bonding and dipole-dipole interactions.

Hydrogen bonding occurs between the hydrogen atom in the water molecule and the oxygen atom in the H2O2 molecule. This is because both molecules have polar covalent bonds, which result in partial charges on their atoms.

Hydrogen bonding is a type of dipole-dipole interaction, which occurs between two molecules with permanent dipoles. The oxygen atom in the water molecule is partially negative, while the hydrogen atoms are partially positive, creating a dipole.

The oxygen atoms in the H2O2 molecule are also partially negative, resulting in another dipole. These dipoles interact, leading to dipole-dipole interactions. These intermolecular forces help to hold the water and H2O2 molecules together, enabling them to mix and interact with each other.

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Answer:

Loss of electrons

Explanation:

Answer:

c

Explanation:

A 0.85% saline solution would consist of 0.85 g NaCl made up to 100 mL of water.

A 0.85% saline solution contains 0.85% by weight of NaCl. Hence, in order to prepare such a solution, 0.85 g of NaCl is weighed out into a beaker or cylinder and distilled water is added up to the 100 mL mark. On the other hand, 8.5 g of the NaCl can be weighed out and then distilled water added to 1000 mL mark.

The correct option is, therefore, c.

Answer:

d. The electron-pair geometry is tetrahedral, the molecular geometry is tetrahedral.

Explanation:

According to Valence Shell Electron Pair Repulsion Theory, the shape of a molecule depends on the number of electrons pairs surrounding the valence shell of the central atom in the molecule.

In CH3Cl, the central atom is carbon. Carbon has four regions of electron density surrounding it and no lone pairs. Lone pairs cause molecules to deviate from the expected geometry.

Since CH3Cl has no lone pairs on the carbon central atom, both the molecular and electron pair geometries are tetrahedral.

In CH₃Cl, the electron-pair geometry is trigonal-planar, and the molecular geometry is bent. Therefore, option C is correct.

According to VSEPR (Valence Shell Electron Pair Repulsion) theory, the electron pairs around the central atom in CH₃Cl will arrange themselves to minimize repulsion, resulting in a specific geometry.

In CH₃Cl, the central atom is carbon (C), and it is surrounded by three hydrogen atoms (H) and one chlorine atom (Cl).

The electron-pair geometry is determined by the arrangement of these electron pairs.

Molecular geometry considers only the atoms around the central atom, not the lone pairs.

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Answer:

thank you for this oibnki

Answer:

Sure I'll go ahead and like your answers and follow you if that's what you wanted! :)

Explanation:

The answer is product.

The free energy of a thermodynamic system is referred to as the Gibbs free energy or Gibbs energy. The Gibbs free energy is a thermodynamic quantity that represents the thermodynamic system's ability to do reversible work.The formula for Gibbs energy is shown below:

                           ΔG = ΔH - TΔS

where:ΔG: the Gibbs free energy of the system

ΔH: the enthalpy of the systemT: the temperature of the system

ΔS: the entropy of the system

The Gibbs free energy can be calculated using the following formula:

ΔG° = - RT lnK

where:ΔG°: the Gibbs free energy at standard state

R: the gas constant

T: the temperature in kelvins

K: the equilibrium constant

The value of ΔG° determines the direction in which a chemical reaction will proceed. A negative ΔG° means that the reaction is spontaneous, while a positive ΔG° means that the reaction is non-spontaneous.

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Answer:

for a effective wind farm you would need wind turbines a windy area a rotation powered generator and something to use it on

Explanation:

Number of copper atoms ≈ 3.013 x 10²³ atoms

To determine the number of copper atoms in a given volume, we need to follow these steps:

Determine the mass of the copper sample:

Mass = Volume x Density

Given that the density of copper is 8.96 g/cm³, we can assume the volume as 1 cm³ for simplicity.

Mass = 1 cm³ x 8.96 g/cm³ = 8.96 g

Calculate the number of moles of copper using the molar mass of copper:

Molar mass of copper (Cu) = 63.55 g/mol

Moles of copper = Mass / Molar mass

Moles of copper = 8.96 g / 63.55 g/mol

Determine the number of copper atoms using Avogadro's number:

Avogadro's number (NA) = 6.022 x 10²³  atoms/mol

Number of copper atoms = Moles of copper x NA

Number of copper atoms = [(4/3)π cm³ x 8.96 g/cm³] / 63.55 g/mol x (6.022 x 10²³  atoms/mol)

By substituting the values and performing the calculations:

Number of copper atoms ≈ 3.013 x 10²³ atoms

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Answer:

True

Explanation:

It is true because heat is released when a gas changes to a liquid.

Answer:

True

Explanation:just took the test

Answer:

90 is 50% of 180

Explanation:

Just multiply 80 by 2 for 50%

Answer:

32.7%

Explanation:

To calculate the percentage by mass of an element in a compound, the following procedure is employed:

- Find the atomic mass of the element

- Find the molar mass of the compound

- Divide the atomic mass of the element by the molar mass of the compound and multiply by 100

Mathematically; this is denoted by:

Mass % of Sulphur = (Atomic mass of S/Molar mass of H2SO4) × 100

Atomic mass of S = 32g/lol

Molar mass of H2SO4 = 1(2) + 32 + 16(4) = 2 + 32 + 64

= 98g/mol

Hence,

% mass of S = 32/98 × 100

= 0.3265 × 100

= 32.65

= 32.7 (1 d.p)

Therefore, the percent of sulfur in sulfuric acid (H2SO4) is 32.7%

Answer: 3.002 ==> C

Explanation:

3.00183 =

3.00183 =3.002 => since 8 is closer to 10 than to 0, add 1 to the 1 in 3.00183

3.002 ==> C

The Equilibrium would shift to produce more NO

The reaction is;

N₂(g) + O₂(g) ⇆ 2NO(g)

When a reaction is at equilibrium then the forward reaction rate will be equivalent to the reverse reaction rate. Additionally, the concentration of the reactants and products are the same.

Additional reactants favor the formation of more products while additional products favor the formation of more reactants.

For example, when more oxygen is added then more Nitrogen (II) oxide will be formed.

Oxygen is a reactant and when increased it favors forward reaction which leads to the formation of more NO which is the product.

Chemical equilibrium is the condition in which both reactants and products are present in concentrations that have no further tendency to change with time, resulting in no observable change in the system's properties. If the same conditions are maintained, it will be seen that 87 percent of ammonia decomposes to form nitrogen and hydrogen. Therefore, it is an example of a reversible equilibrium reaction.

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Answer:

Ca(NO3)2 + 2H2O.

Explanation:

The term "neutralization reaction" refers to a chemical process in which an acid is neutralized by a base and water is created as a byproduct.

Nitric acid and calcium hydroxide, which is a base, react to produce calcium nitrate and water as a byproduct.

Answer: a) No, both are different.

b) Ramesh- 9.9%

  Sarika - 10%

Explanation:

According to the solution prepared by Ramesh,

Mass of sugar he took (Solute) = 10 g

Mass of water he took (Solvent) = 100 g

Thus Mass % of the solution =

According to the solution prepared by Sarika,

Mass of sugar she took (Solute) = 10 g

Mass of Solution she took  = 100 g

Thus Mass % of the solution =

Explanation:

The angle between sulfur-bromine bonds in SBr6 is 90°.

Sulfur hexabromide(SBr6), is a chemical compound with the hybridization of one s orbital, three p orbitals, and two d orbitals.

Hence, the hybridization of the central atom i.e, Sulfur in this compound is sp3d2.

As the compound has a hybridization of sp3d2, its shape is octahedral, as shown in the adjoining image.

As it is visible from the structure of SBr6, all angles between Sulfur and bromine are equal and their value is 90°.

Thus, the angle between sulfur-bromine bonds in SBr6 is 90°.

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The major elimination product when I-bromobutane is reacted with the bulky base, potassium t-butoxide, in t-butyl alcohol is cis-2-butene.

This is because when a base is added to a molecule with a double bond, the electrons in the double bond are shifted to the more substituted carbon, resulting in the formation of a new single bond and a new double bond. Since the bulky base, potassium t-butoxide, is larger than the hydrogen atom, it will be shifted to the more substituted carbon, forming a cis-2-butene. This is because the larger size of the base causes it to be more sterically hindered, thus making it more difficult for the electrons to move to the more substituted carbon. As a result of this reaction, the mass of the reactants and products remains constant, as per the law of conservation of mass.

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To raise the temperature of a 10.35g sample of carbon tetrachloride from 32.1°c to 56.4°c, 222.92J heat is required.

Heat is a form of energy and it is associated with the motion of particles. The amount of heat required to change the temperature of a substance depends on its mass, the specific heat capacity of the substance and the change in temperature.

The mass of carbon tetrachloride is given as 10.35g. The specific heat capacity of carbon tetrachloride is given as 0.85651 J/g°C and the change in temperature is given as 24.3°C. Putting these values into the formula: q = m × C × ΔTq = 10.35 g × 0.85651 J/g°C × 24.3°Cq = 222.92 J. Therefore, 222.92 Joules of heat are required to raise the temperature of a 10.35g sample of carbon tetrachloride from 32.1°c to 56.4°c.

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0.04 liters (or 40 milliliters) of 0.5 M sodium phosphate is required to react with Cu(NO3)₂ in the Copper Cycle, given that we start with 0.636 grams of Cu(s).

The balanced chemical equation for the reaction between Cu and Cu(NO3)₂ is:

Cu(s) + 2NO³⁻(aq) + 2H₃O+(aq) → Cu²⁺(aq) + 2NO₂(g) + 4H₂O(l)

The molar mass of Cu is 63.55 g/mol.

0.636 grams of Cu corresponds to 0.01 moles.

According to the stoichiometry of the balanced equation, 0.01 moles of Cu react with 0.02 moles of Cu(NO3)₂.

To determine the volume of 0.5 M sodium phosphate required for the Copper Cycle reaction with Cu(NO3)₂ (aq):

moles = concentration x volume

volume = moles ÷ concentration

The concentration of sodium phosphate is 0.5 M, and the number of moles of Cu(NO3)₂ required is 0.02 moles. Therefore, the volume of 0.5 M sodium phosphate required is:

volume = 0.02 moles ÷ 0.5 M

volume = 0.04 L

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The complete question is:

Calculate the volume of 0.5 M sodium phosphate needed to react with Cu(NO3)₂ (aq) in a Copper Cycle that starts with 0.636 grams of Cu(s).

8.43*10^-2 is the average value of rate constant. A chemical reaction's rate and direction are expressed in terms of a reaction rate constant or k.

The proportionality constant in the equation that defines the link between the rate of a chemical reaction and the concentrations of the reacting chemicals is known as the rate constant, also known as the specific rate constant.

In contrast to a steady rate, an average rate is subject to variation throughout time. The average or overall rate of an object moving at various speeds or rates throughout time is what is meant by the term "average rate."

Assuming the reaction is occurring throughout the volume of the solution, [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, and k(T) is the reaction rate constant that varies on temperature.

k = Rate / {[E]1 [D]2}

Find for each trial

k average = (A k+ B k + C k)/3

K average = 0.400 0.400 5.40 x 10-3 +  0.400 0.200 2.72 x 10-3 + 0.800 0.400 1.10 x 10-2 / 3

k = 8.43*10^-2

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A solution of nitric acid will contain nitric acid molecules (HNO3), hydrogen ions (H+), and nitrate ions (NO3-). Nitric acid is considered a strong acid because it completely dissociates into ions when dissolved in water.

In a solution of nitric acid, the particles present are nitric acid molecules (HNO3), hydrogen ions (H+), and nitrate ions (NO3-). Nitric acid (HNO3) is a strong acid.

Strong acids are substances that ionize completely in water, meaning that they break apart into their constituent ions. In the case of nitric acid, it dissociates fully to produce hydrogen ions (H+) and nitrate ions (NO3-) when dissolved in water.

The dissociation reaction for nitric acid can be represented as follows:
HNO3 → H+ + NO3-

As nitric acid completely ionizes in water, the concentration of hydrogen ions (H+) is high in a solution of nitric acid, making it an acidic solution.

It's important to note that the terms "strong" or "weak" in the context of acids refer to their degree of ionization in water, not their corrosiveness or concentration. Nitric acid is classified as a strong acid because it undergoes complete ionization.

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Answer:

33 minutes

Explanation:

60 km/h = 37.28 mi/h

20/37.28 = 0.5364 h

0.5364 * 60 min = 32.2 minutes