How many grams of hydrogen chloride can be formed from 80.00 g of chlorine?

Answer:

It can't be broken and it can be moved

Explanation:

Answer:

Liquid and solid

Explanation:

To draw the molecular orbital diagram for B2, we need to consider the atomic orbitals of two boron atoms (B) and their interaction.

First, let's consider the electron configuration of boron (B) which is 1s² 2s² 2p¹. Since we have two boron atoms, we can represent their atomic orbitals as follows:

B₁: σ(1s)² σ*(1s)² σ(2s)² σ*(2s)² π(2p)¹

B₂: σ(1s)² σ*(1s)² σ(2s)² σ*(2s)² π(2p)¹

Now, let's fill the molecular orbitals by pairing the electrons:

σ(1s)² σ*(1s)² σ(2s)² σ*(2s)² π(2p)²

The molecular orbital diagram for B2 would look like this:

         σ*(2p)       π*(2p)

         ↑                ↑

         ↑                ↑

σ(2s) ↑                ↑ π(2p)

         ↑                ↑

         ↑                ↑

σ(1s) ↑                ↑

Based on the molecular orbital diagram, we can see that there are 2 electrons in bonding orbitals (σ(2s), π(2p)), and no electrons in antibonding orbitals (σ*(2p), π*(2p)). The bond order can be calculated by subtracting the number of electrons in antibonding orbitals from the number of electrons in bonding orbitals and dividing the result by 2:

Bond Order = (Number of electrons in bonding orbitals - Number of electrons in antibonding orbitals) / 2

Bond Order = (2 - 0) / 2 = 1

Therefore, the bond order of B2 is 1, indicating a single bond between the two boron atoms.

Now, let's consider whether the molecule would be stabilized by adding or removing an electron. In B2, all the bonding orbitals are fully occupied, resulting in a stable configuration.

Adding an electron would lead to an imbalance and an increase in the number of antibonding electrons, which could destabilize the molecule. Removing an electron would also disrupt the balance between bonding and antibonding orbitals.

Therefore, B2 is already in a stable configuration, and neither adding nor removing an electron would stabilize the molecule further.

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Answer:

divide the distance by the average

Explanation:

ash QC ok

The mass in grams of uranium is 820.255g

Mass is the any substances that would be calculated by using their moles

Here given data is

uranium in 1 mol = 289.1 mol

And the formula is

n = W/V

W = required mass = ?

M = molar mass of uranium = 238.05g/mol

n = moles of uranium = 289.1 mol

Then putting this value

W =  289.1 mol×238.05g/mol

W = 820.255g

The mass, in grams of 289.1 mol of uranium is 820.255g

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Terminations that are typically the result of conflict between senior managers, one of whom may be terminated along with the project, are known as **executive terminations**.

Executive terminations occur when there is a **disagreement or conflict** among top-level management, leading to the termination of one or more senior managers as well as the potential cancellation of a project. These conflicts can arise due to differences in strategic direction, performance concerns, or other issues. In such situations, the decision to terminate an executive is often made by the board of directors or other high-ranking officials within the organization. By understanding the reasons behind executive terminations, companies can work towards minimizing conflicts and ensuring a more cohesive management team.

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Answer: B) the forces in the solid hold the atoms tightly in place

Explanation:This is because there is no room for the atoms to move around much and because they are very close together which makes the phase a solid.

It requires 19975.7 J of heat capacity to raise 5.3 moles of water from 75.0 °C to 125 °C at atmospheric pressure.

How should I define "thermal capacity"?

Heat capacity is the quantity of heat energy required to raise a particular quantity of matter's temperature by one degree Celsius. The size or quantity of a particular substance has an impact on a general property known as heat capacity. The units used to assess heat capacity are joules per degree Celsius or joules per Kelvin.

What kind of heat capacity is that?

Thus, a substance's ability to conduct heat is an innate property. For instance, water has an incredibly high heat capacity of 4184 J per kilogram. This indicates that 4184

Briefing:

H = ncθ

m = Number of moles of water

c = Molar heat capacity of water

θ = Temperature rise

Substituting values;

H = 5.3 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)

H = 19975.7 J

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Answer:

Ionic

Explanation:

A transfer of electrons occurs when fluorine and calcium react to form an ionic compound. This is because calcium is in group two and so forms ions with a two positive charge. Fluorine is in group seven so forms ions with a negative charge.

We need to add approximately 36.5 mL of 0.246 M HNO3 to 213 mL of 0.00666 M 2,2'-bipyridine to lower the pH to around 4.0.

We can use the Henderson-Hasselbalch equation to calculate the amount of acid needed to reach a certain pH:

pH = pKa + log([base]/[acid])

where [base] and [acid] are the concentrations of the conjugate base and acid, respectively.

In this case, we want to add HNO3 to the 2,2'-bipyridine solution to reach a certain pH. We don't know the exact pH we want to achieve, but we can make an estimate based on the pKa of 2,2'-bipyridine. The pKa of the conjugate acid of 2,2'-bipyridine is around 4.8.

Let's say we want to lower the pH of the solution to around 4.0. We can use the Henderson-Hasselbalch equation to calculate the ratio of [base]/[acid] needed to achieve this:

4.0 = 4.8 + log([base]/[acid])

-0.8 = log([base]/[acid])

[base]/[acid] = 10^(-0.8) = 0.158

So we need the ratio of [base]/[acid] to be 0.158. Since we know the concentration of the base (2,2'-bipyridine) is 0.00666 M, we can calculate the concentration of the acid needed:

[acid] = [base]/0.158 = 0.00666 M / 0.158 = 0.0421 M

We also know the concentration of the HNO3 solution is 0.246 M. We can use the following equation to calculate the volume of HNO3 needed:

moles of HNO3 = volume of HNO3 (in L) x concentration of HNO3 (in M)

moles of HNO3 = volume of 2,2'-bipyridine solution (in L) x concentration of acid (in M)

Since we know the volume and concentration of the 2,2'-bipyridine solution, we can solve for the volume of HNO3:

moles of HNO3 = (213 mL / 1000 mL/L) * 0.0421 M = 0.00897 moles

volume of HNO3 = 0.00897 moles / 0.246 M = 0.0365 L

volume of HNO3 = 36.5 mL

So, we need to add approximately 36.5 mL of 0.246 M HNO3 to 213 mL of 0.00666 M 2,2'-bipyridine to lower the pH to around 4.0.

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Answer:

Fossil fuels..........

Answer: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Hopefully i helped

Explanation:

Answer: Alkaline-earth metal

Explanation:

The question requires us to calculate the energy, in joules (J), necessary to heat 83.5g of water from 26.7 °C to 75°C.

The heat energy (Q) can be calculated from the mass of the sample (m), its specific heat capacity of the substance (C) and temperature variation (ΔT), as given by the following equation:

Since the question did not provide a value for the specific heat capacity of water, we'll adopt the value 4.182 J/g.°C. Applying the values provided by the question, we can calculate the heat energy as:

Therefore, the heat energy necessary to heat the amount of water given grom 26.7 to 75°C is 1.69 x 10^4 J (or 16900 J).

Answer:

Hot magma rises from the mantle at mid-ocean ridges pushing the plates apart. Earthquakes occur along the fractures that appear as the plates move apart.:

The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14.  pH is a unitless quantity. Therefore,  the pH of the solution is  2.7.

What is pH?

pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.

On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.

Number of moles =  .650M ×75.0 mL  = 3.5 × 10⁻³ moles

Molarity of the methylamine = 3.5 × 10⁻³ moles/75.0 mL = 0.012 M

               AH(aq) +H₂O ⇔H₃O⁺ (aq) + A⁻(aq)

I                 0.012                       0                 0

C               - x                             +x               +x

E               0.012 -x                     x                 x

Kb= Antilog (-3.5) =5.0 x 10⁻⁴

Kb = [H₃O⁺] [A⁻]/[AH]

3.2 × 10⁻⁴ = x²/0.012 -x

3.2 × 10⁻⁴ (0.012 -x ) =  x²

3.84 ×10⁻⁶ - 3.2 × 10⁻⁴x =   x²

Solving the resulting quadratic equation

x=0.0018 M

pH=-log(0.0018 M) = 2.7

Therefore,  the pH of the solution is 2.7.

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Explanation:

probably protons would be released and cause a spontaneous reaction

The half-life of the substance is 3.106 years.

Here,

a = the initial amount of substance

1-r is the decay rate

x = time span

The equation is given in its correct form as follows:

a = \(a_{0}\)×\((0.8)^{t}\)

As this is an exponential decay of a first order reaction, t is an exponent of 0.8.

Now let's figure out the half life. Since the amount left is half of the initial amount at time t, that is when:

a = 0.5 a0

0.5\(a_{0}\) = \(a_{0}\)×\((0.8)^{t}\)

0.5 = \((0.8)^{t}\)

taking log on both sides

t log 0.8 = log 0.5

t = log 0.5/log 0.8

t = 3.106 years

The half-life of the substance is 3.106 years.

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In the CGS and S.I systems, the units of energy erg and joule are equivalent.

The symbols for joule and erg are (kg m2/s2) and (g cm2/s2), respectively.

110 + 40 = 150

150*32 = 4800 °C

The International System of Units uses the joule as its unit of energy. It is equivalent to the amount of labor required to move a mass one meter in the direction of an applied newton of force.

The joule (J), which equals one newton metre, is the SI unit for energy (N m).

The work (or energy expended) by a force of one newton (N) operating over a distance of one meter is equivalent to one joule (m). A force of one newton causes a mass of one kilogram (kg) to accelerate by one meter per second (s) per second. So, one joule is equivalent to one newton meter.

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Because it has a higher mass than CO2 (g), CO2 has a higher absolute entropy value.

In order for the atoms of the various chemical elements to be bound together by strong chemical bonds, a compound must be created by mixing two or more different chemical components.

Atoms of various elements are chemically mixed in compounds in a predetermined ratio. A pure chemical compound made of the same type of atom is referred to as an element. Composition. Different elements are found in compounds in a predetermined ratio, organized by chemical bonds in a predetermined way.

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Answer:

\(31^oC\)

Explanation:

Range = Highest value - Lowest value

A 'soft solder' melts between 183 °C and 212 °C.

Melting range of a 'soft solder' = \(212-183=29^oC\)

A 'hard solder' melts between 620 °C and 680 °C.

Melting range of a 'hard solder' = \(680-620=60^oC\)

So,

Difference in melting ranges = Melting range of a 'hard solder'  - Melting range of a 'soft solder' = \(60^oC-29^oC=31^oC\)

Answer:

7. Option 2. Atom 1 and Atom 4

8. The same number of valence electron

Explanation:

7. Determination of which symbol represent an isotope.

Isotopes are atoms having the same atomic number but different mass number due to the difference in the neutron number.

From the question given above, the following were obtained:

Z => atomic number

A => mass number

Atom >>> Isotope >>>>> Z >>>> A

1 >>>>>>> ¹⁷₇E >>>>>>>> 7 >>>> 17

2 >>>>>>> ¹⁷₈E >>>>>>> 8 >>>> 17

3 >>>>>>> ¹⁸₆E >>>>>>> 6 >>>> 18

4 >>>>>>> ¹⁸₇E >>>>>>> 7 >>>> 18

From the table above, only atom 1 and 4 has the same atomic number. Hence, atom 1 and atom 4 are isotopes.

8. To know the correct answer to the question, we shall write the electronic configuration of magnesium and calcium. This can be obtained as follow:

Mg (12) => 1s² 2s²2p⁶ 3s²

Valence electron => 2

Ca (20) => 1s² 2s²2p⁶ 3s²3p⁶ 4s²

Valence electron => 2

We can see that magnesium and calcium both have the same valence electron. Hence, they will have similar chemical properties.

Answer:

the right answer is 9110

For this question, since we are given the pressure, number of moles and temperature to find the volume, we have to use the ideal gas equation.

pV = nRT

Now lets put in the values

V = (0.263 mol x 8.314 J/mol x 307 k)/1.15 atm

V = 583.722 L

.

Given that he traveled at an average speed of 45mph to his mom's house, Mark did not make it to dinner on time because he arrived at 6:40 pm.

To find out how long it took Mark to travel 300 miles at an average speed of 45mph, we can use the formula:

Distance = Average speed × Time

Rearranging the formula to solve for time, we get:

Time = Distance / Average speed

Plugging in the given values:

Time = 300 miles / 45mph

Time = 20/3 hours = 6 hrs and 40 mins

Since Mark left his house at 12:00, he would arrive at his mom's house at 6:40 (12:00 + 6.67 hours), which is 40 minutes after dinner was supposed to be ready at 6:00. Therefore, Mark did not make it to dinner on time.

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Answer: the data are inadequate .

Explanation:

Due to electronegativity difference between H and F atom.

Thus from the above conclusion we can say the difference in electronegativity between H and F atom this is the reason for shorter bond length of HF.

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