what is the bond order for a second-period diatomic particle containing seven electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals?

The actual volume of water measured out is 10.012 mL.

To determine the actual volume of water, we can use the density formula: density = mass/volume.

Rearranging the formula to solve for volume, we get: volume = mass/density.

Plugging in the given values, we get:

volume = 9.990 g / 0.9978 g/mL = 10.012 mL.

Therefore, the actual volume measured out is slightly greater than the nominal volume of 10 mL, likely due to the meniscus formed by the water at the top of the pipet. This highlights the importance of proper measurement techniques and accounting for sources of error in experimental measurements.

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Answer:

– 1

Explanation:

From the question given above, we obtained the following:

Electron = 8

Net charge of nitrogen =.?

Nitrogen has atomic number of 7. This also means that nitrogen has 7 proton because atomic number of an element is the equal to number of protons in the atom of the element.

Thus, we can obtain the net charge of nitrogen with 8 electrons by calculating the difference between the protons and electrons of the nitrogen atom. This can be obtained as follow:

Proton = 7

Electron = 8

Net charge = Proton – Electron

Net charge = 7 – 8

Net charge = – 1

Therefore, the net charge of the nitrogen atom with 8 electrons is – 1

Answer:

When a solid object is heated, it expands. This happens because the atoms in the object start vibrating or moving faster.

Explanation:

If you need a longer explanation, let me know! If not, I hope I helped.

Answer:

Yes

Explanation:

The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time. It is an intrinsic expansion whereby the scale of space itself changes. The universe does not expand "into" anything and does not require space to exist "outside" it.

Explanation

Given:

Mass of copper = 5.07 g

Density of copper = 8.96 g/mL = 8960 g/L

Requested: Volume of copper

Solution

p = m/V where p is the density, m is the mass and V is the volume

m = p x V

V = m/p

V = 5.07 g/8.96 g/mL

V = 0.566 mL

Answer

Volume of copper = 0.566 mL

Answer:

Calcium

Explanation:

The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.

Answer:

CH4 + 2O2 = 2H2O + CO2

Answer:

D

Explanation:

Because the energy of a catalysed reaction was lower than the activation energy of the an uncatalyzed reaction, Hence, it is discovered that a second order process has an energy barrier of 20 kJ/mol at 298 K.

The catalysed reaction has a two-step process with a noticeably lower activation energy than the uncatalyzed reaction, which goes through a one-step process (one transition state detected).

A formula describing the temperature coefficient of reaction rates is the Arrhenius equation. The second-order rate constant is equal to the product of a molar gas constant as well as the temperature divided by the pre-[Hyphen]exponential factor times its exponential of activation energy.

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The pair of elements that could not react to form an ionic compound is C and O (option B).

Ionic compounds are formed by the electrostatic interaction of the metal atom with a non-metal. The ionic bonds are weaker bonds and are easily dissociated in the water.

When two elements with opposite charges are combined, a type of bond called ionic bond is formed. Ionic bonds are type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.

Carbon and oxygen are two nonmetallic elements, hence, cannot form ionic or electrostatic bond with one another.

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Explanation:

Using a fractional column will help to separate liquids whit different boiling points since the mixture contain ethanol water and propanaol. Ethanol will be the first to be extracted since it has a low boiling point then it would be water and then propanaol.

Answer:

Protons and nucleus

Explanation:

They are made up the centre of atom

Answer:

Particles in a solid object are super tight and close to eachother. They do not move past eachother because it is a solid, not a liquid or gas.

Explanation:

Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place.

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The balanced equation for the reaction of iron with water that results in the production of iron oxide and hydrogen gas is

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

Iron does not react directly with liquid water but react with water vapour. When the reaction happens, it results in the formation of a solid and a gas. The products of the reaction are Iron oxide and hydrogen. The equation of the reaction would be

Fe (s) + H₂O (g) → Fe₃O₄ (s) + H₂ (g)

Now, we need to balance the equation. On the right-hand side, we have 3 Fe, 4 O and 2 H. Similarly on the left-hand side there are 1 Fe, 1 O and 2 H.

To balance the equation, we add 3 to Fe, 4 to H₂0 and 4 to H₂.

As a result, the balanced chemical equation for the reaction would be

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

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Answer:

I believe it is density.

Explanation:

Hope this helps!

if we hold the concentrations of greenhouse gases constant at the levels anticipated in 2100 for the RCP 8.5 scenario, roughly much globally averaged warming would we get to 4.3°C or 4°C if we waited long enough.

The RCP stands for Representative Concentration Pathways. RCP of 8.5 is one of a suite of scenarios that exhibits several potential future pathways. This scenario of 8.5 defines a pathway in terms of the concentration of carbon in the atmosphere and, not on the basis of the volume of carbon emissions.

RCP of value 8.5 refers to the Carbon concentration that will cause global warming at an average of 8.5 watts per square meter across the earth. This RCP 8.5 pathway results in a temperature rise of about 4.3°C by 2100, relative to pre-industrial temperatures.

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When it comes to chemical formulas, the chemical formula is used to show the elements that make up a compound. For instance, water has the chemical formula H2O, which shows that it is made up of two hydrogen atoms and one oxygen atom.

Hydrogen ion (H+) has the chemical formula H+

Hydroxide ion (OH-) has the chemical formula OH-

Hydronium ion (H3O+) has the chemical formula H3O+.

The chemical formulas of hydrogen ion, hydroxide ion, and hydronium ion are:

H+ for hydrogen ion OH- for hydroxide ionH3O+ for hydronium ion.

An ion is an atom or a molecule that has gained or lost electrons. These atoms or molecules become charged ions due to their gain or loss of electrons. Hydrogen ion, hydroxide ion, and hydronium ion are three of the most common ions in aqueous solution that have a significant impact on chemical reactions. The hydrogen ion, which has a positive charge, is an essential component of many chemical reactions, particularly those that take place in water. It is represented by the chemical symbol H+. The hydroxide ion, which has a negative charge, is also a crucial component of many chemical reactions, particularly those that take place in water. It is represented by the chemical symbol OH-.The hydronium ion, which has a positive charge, is another important component of many chemical reactions, particularly those that take place in aqueous solutions. It is represented by the chemical symbol H3O+.

In summary, hydrogen ion, hydroxide ion, and hydronium ion are important components of many chemical reactions. They have different chemical formulas, with hydrogen ion being represented by H+, hydroxide ion by OH-, and hydronium ion by H3O+.

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Answer:

plants

Explanation:

they are plant cells, happy Thanksgiving :)

Answer: photosynthetic tissues

Explanation: Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green, such as the brown blades of giant kelp or the red leaves of certain plants.

Answer:

that can be established only by changing a substance's chemical

Explanation:

Answer:

A chemical property is a characteristic of a substance abserved in chemical reactions.

Explanation:

Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

Answer:

all right. here is my answer

Explanation:

first you have to find its volume

v of cube =s³

= (15.6)³mm³

=3796.416mm³ = 3.8mL

and then density

density=mass/volume

density of Al = 10.25 gr/ 3.8 mL

= 2.7 gr/mL

The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. The density of aluminum in g/cm³ is  657.05 g / cm³.

A substance's density is a measurement of how heavy it is in relation to its size. If an object is placed in water, it will float if it is less dense than the water, and it will sink if it is more dense. The density of a material is a distinguishing quality that is independent of the substance's volume.

The volume of the cube =a³

V = (15.6)³ mm³

V = 0.0156 cm³

Then density is:

Density = mass /volume

The density of Al = 10.25 g/ 0.0156 cm³

D = 657.05 g / cm³

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The false statement is that adding more H2(g) rises the equilibrium constant.

Q can be utilized to predict which way a response will shift to achieve equilibrium. If K > Q, the reaction will continue, converting reagents into products. If K Q, the reaction will go in the opposite direction, converting products back into reactants. If Q = K, the system has already reached equilibrium.

Here are some examples of equilibrium: A book resting on a table. A car moving at a constant speed. A chemical reaction in which the prices of forward and reverse reactions are the same.

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The complete question is-

Consider: H2(g)+I2(s)=2HI(g)

Which of the following statements about the equilibrium is false?

A. If the system is heated, the right side is favored

B. This is a heterogeneous equilibrium

C. If the pressure on the system is increased by changing the volume, the left side is favored

D. Adding more H2(g) increases the equilibrium constant

E. Removing HI as it forms forces the equilibrium to the right

Answer:

In the given reaction, Zinc (Zn) is being oxidized to Zinc ion (Zn2+). The oxidation half-reaction equation would be: Zn (s) → Zn2+ (aq) + 2e−. The species that should be included in the oxidation half-reaction equation are Zn (s) and Zn2+ (aq).

Explanation:

A film inside a box can be exposed by beta particles but not alpha particles due to their different penetration capabilities

Alpha particles are much larger and heavier than beta particles, which means that they cannot penetrate through materials as easily as beta particles.

When a film is kept in a box, the box acts as a shield that blocks alpha particles from reaching the film, as the particles cannot pass through the material of the box. However, beta particles are smaller and have less mass, which makes them more capable of passing through materials. Therefore, if there is a source of beta particles outside the box, they can penetrate through the material of the box and reach the film, potentially exposing it.

In summary, the ability of particles to penetrate through materials is dependent on their size and mass, with alpha particles being too large to penetrate through the box and beta particles being small enough to pass through it.

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Answer:

89-91=1 the answer is 1molar mass

The phase of water at 0.5 atm and 100°C is gaseous phase.

Water exists in three different phases such as liquid, gas, and solid.

The phase of the given water can be determined using phase diagram at standard temperature and pressure as shown in the image uploaded.

At 0.5 atm and 100 °C, the water is still in vapour or gaseous phase.

Thus, the phase of water at 0.5 atm and 100°C is gaseous phase.

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49.26 mol/sec is the average reaction rate for the oxygen gas

2 Na+ + 2ClO- --> 2Na+ + 2Cl- + O2

average reaction= formation of oxygen/time

average reaction=100/2.03

average reaction=49.26 mol/sec

Reaction rate is the rate at which a chemical reaction moves forward. It is frequently expressed in terms of either the concentration of a reactant that is consumed in a unit of time or the concentration of a product that is formed in a unit of time (amount per unit volume). You could also define it in terms of how much of the reactants are used up or how much of the products are produced in a given amount of time.

Depending on the nature of the reacting substances, the type of chemical transformation, the temperature, and other factors, chemical reactions can move along at vastly different rates. In general, covalent bond breaking reactions take much longer than those involving the combination of atoms or ions (electrically charged particles).

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For n=1, ∫Ψ* Ψ d³x = 1

The ground state wavefunction of hydrogen satisfies the normalization condition ∫Ψ* Ψ d³x = 1.

To show that the ground state hydrogen wavefunction is properly normalized, we need to calculate the integral of the wavefunction squared, Ψ², over all space and demonstrate that it equals 1.

The ground state wavefunction of hydrogen is given by:

Ψ(r) = (1/√πa₀³) \(e^(^-^r^/^a^_0)\)

where a₀ is the Bohr radius.

To show normalization, we evaluate the integral:

∫ Ψ*(r) Ψ(r) d³r

where Ψ*(r) represents the complex conjugate of Ψ(r).

Substituting the expression for Ψ(r), we have:

∫ (1/√πa₀³) \(e^(^-^r^/^a^_0)\)      (1/√πa₀³) \(e^(^-^r^/^a^_0)\) d³r

Expanding the product and rearranging the terms, we get:

(1/π²a₀⁶) ∫ \(e^(^-^2^r^/^a^_0)\) d³r

The integral represents the volume integral over all space, so we can rewrite it as:

(1/π²a₀⁶) ∫∫∫  \(e^(^-^2^r^/^a^_0)\) dxdydz

Since the wavefunction is spherically symmetric, we can use spherical coordinates for the integral. The volume element in spherical coordinates is given by r² sin(θ) dr dθ dφ.

Therefore, the integral becomes:

(1/π²a₀⁶) ∫∫∫  \(e^(^-^2^r^/^a^_0)\) r² sin(θ) dr dθ dφ

To solve the integral, we perform the integration in each coordinate:

∫∫∫  \(e^(^-^2^r^/^a^_0)\) r² sin(θ) dr dθ dφ = ∫ [0,∞]  \(e^(^-^2^r^/^a^_0)\) r² dr ∫ [0,π] sin(θ) dθ ∫ [0,2π] dφ

The φ integral gives 2π, and the θ integral gives 2.

∫ [0,∞]  \(e^(^-^2^r^/^a^_0)\) r² dr = (\(-a_0^3^/^8\)) [ \(e^(^-^2^r^/^a^_0)\) (2r² + 2r\(a_0\) + \(a_0^2\))]

Evaluating this integral from 0 to ∞ gives a_0^3/8.

Thus, the integral becomes:

(1/π²a₀⁶) (\(-a_0^3^/^8\)) (2)(2π)

Simplifying, we get:

(1/π²a₀⁶) (\(a_0^3\)/4π)

The π terms cancel out, and we are left with:

1/(2\(a_0^3\) )

This value is equal to 1, confirming that the ground state hydrogen wavefunction is properly normalized.

Therefore, the ground state wavefunction of hydrogen satisfies the normalization condition ∫Ψ* Ψ d³x = 1, demonstrating that it is properly normalized.

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Answer:

This page looks at the manufacture of alcohols by the direct hydration of alkenes, concentrating mainly on the hydration of ethene to make ethanol.

The steps in the ethanol production process include milling the corn to meal, liquefying the meal by adding water and cooking, breaking down starch into sugar, using yeast to ferment the sugar to ethanol, distilling the ethanol by boiling off and condensing it by removing residual water and finally denaturing so that...