Im really confused and i need help asap

Answer:

the answer is potential energy

Explanation:

Answer: potential energy

Explanation:

Answer:

His conclusion is wrong

Explanation:

Now we must know that there are various rate laws.

In a zero order rate law, the rate of reaction is independent of the initial concentration of reactants. Hence varying the initial concentration of the reactants results in no change of the rate of reaction.

In first and second order rate laws, the rate of reaction varies with the concentration of one or two reactants in either case respectively.

Having said these, the student does not need to change the temperature but rather designate the reaction as zero order. The rate of reaction is independent of the initial concentration of reactants.

Answer: D

Explanation:

The personal data are transmitted using digital signals. The data might be stolen or accessed by hackers to go wrong with these transmissions. Therefore, option D is correct.

A digital signal is one that can only ever take on one of a few discrete values at any given time. It represents data as a sequence of discrete values.

A continuous signal that represents physical measurements is an analog signal. Digital modulation is used to create time-separated signals known as digital signals. Sine waves serve as its signal. The square waves serve as a marker.

It makes use of a continuous range of values to aid in the representation of data. Digital technologies are any techniques, systems, equipment, or resources that produce, store, or process data electronically.

Thus, option D is correct.

To learn more about digital signal, follow the link;

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Answer:

You would put the 4 quantum numbers corresponding to the electrons being described above

Explanation:

Quantum numbers refer to electrons, so I'll assume you mean the electron number that would correspond with the atomic number of the element. Quantum numbers are basically like an address for electrons, giving us information about the location of an electron from most general to most specific.

The quantum selection rules allow finding the results for the quantum numbers for each electrons are:

          1. n = 5, f l = 3 el m = 1

           The quantum number of spin. Opposite the first electrons.

         2. n = 4, l = 2, m = 0  

             Spin opposite the first electrons.

        3. n = 4, l = 1, m = 0

            Spin number opposite the first electrons.

        4. n = 3, l = 1, m = 1

            Spin all electrons have the same spin.

         5. n = 7, l = 2, m = 0

             Spin quantum number two electrons with opposite spin.

The solution of the Scrodinger's equation in three dimensions results have  three constants related, these constants are called quantum numbers.

In independent experiments, a fourth quantum number called the spin magnetic moment was found, it can have two values ​​+ ½ and - ½

The rules for valid combinations ​​of these quantum numbers are called selection rules, the spectroscope notation for each electron is.

         [tex]n l ^m[/tex]

Where n is the principal number, l the orbital and m the magnetic.

To determine the value of the spin quantum number, the Pauli exclusion principle is used, which establishes that you cannot have two fermions (electrons) in the same quantum state, this deteriorates that in a state there can only be two electrons, one with upward spin and the other spin down.

Let's find the combination of these constants for each case.

1. The 11th electron of level  5f¹⁴.

The principal quantum number n = 5

Orbital quantum number f,  l = 3

In the f orbital, a maximum of 14 electrons can be placed, since it has 7 sub-levels and according to the Pauli Exclusion principle, each one can have two electrons.

We place 1 electron in each sub-level and then we place a second electron with the opposite spin, therefore when we get to electron number 11 it has a spin opposite to that of the first 7 electrons, but there is no way to previously know its value.

we construct a table with the distribution of electrons.

Quantum number        Electrons

n = 5

          l = 0

          l = 1

          l = 2

          l = 3

                   m = -3           ½ - ½

                   m = -2           ½ - ½

                   m = -1             ½ - ½

                  m = 0              ½ - ½

                  m = 1               ½

                  m = 2              ½

                  m = 3              ½

With the help of this table the other numbers are:

Tthe magnetic quantum number is m = 1

The quantum number of spin. opposite the spin of the first electrons.

2. The eighth electron of the 4d¹⁰ state

Pricipal number n = 4

Orbital number l = 2

We construct a table with the distribution of electrons.

Quantum number        Electrons

n = 4

      l = 0

      l = 1

      l = 2

              m = -2                ½ - ½

              m = -1                 ½ - ½

              m = 0                  ½ - ½

              m = 1                  ½

              m = 2                 ½

With this table the other quantum numbers are;

Magnetic m = 0

Spin opposite the first electron

3. 5th electron of 4p⁶

Principal number n = 4

Orbital number p l = 1

We construct a table with the distribution of electrons.

 Quantum number        Electrons

   n = 4

           l = 0

           l = 1

                m = -1                    ½ - ½

                m = 0                    ½ - ½

               m = 1                       ½

Magnetic number m = 0

Spin number opposite the first electrons.

4. 15th electron of phosphorus

The electron configuration of phosphor is

        1s² 2s²2p⁶ 3s²3p³

Principal quantum number n = 3

Orbital quantum number p, l = 1

We construct the electron distribution table.

Quantum number        electrons

 n = 3

          l = 0

         l = 1

               m = -1                   ½

               m = 0                   ½

               m = 1                    ½

The other quantified numbers are:

Magnetic m = 1

Spin all electrons have the same spin.

5. The last electron of neptunium.

Electronic configuration.

 Radon Gas Configuration +  5f⁴6d¹ 7s²

Principal quantum number n = 7

Orbital quantum number l = 2

Magnetic quantum number m = 0

Spin quantum number two electrons with opposite spin.

In conclusion using the quantum selection rules can determine the quantum numbers for each given electron are:

        1. n = 5, f l = 3 el m = 1

           The quantum number of spin. Opposite the first electrons.

         2. n = 4, l = 2, m = 0  

             Spin opposite the first electrons

        3. n = 4, l = 1, m = 0

            Spin number opposite the first electrons.

        4. n = 3, l = 1, m = 1

            Spin all electrons have the same spin

         5. n = 7, l = 2, m = 0

             Spin quantum number two electrons with opposite spin.

Learn more about the quantum selection rules here:   brainly.com/question/14288557

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 75 × 8

We have the final answer as

Hope this helps you

Answer:

Oxygen

Explanation:

If two balloons are filled with hydrogen gas and helium gas respectively, then we want to identify what gas is in each balloon, we have to do so by exposing the both balloons to flame in an oxygen atmosphere.

Hydrogen combines with oxygen in the presence of a flame with quite a loud sound and the flame is sustained but when a flame is brought near helium gas in a balloon, the gas will only make a little sound when exposed to the flame and extinguish the flame.

The reason for the explosion of the gas in the hydrogen balloon is that combustion of hydrogen gas is exothermic. The heating up of surrounding air molecules leads to a sudden explosion.

However, the helium balloon makes a little sound when the balloon is ruptured releasing helium gas which extinguishes the flame.

Answer:

B

Explanation:

Answer: First an endothermic and then followed by the exothermic process

Explanation:

Based on the information given in the question, we should note that the entire process is an endothermic process at first and then an exothermic process.

We should note that heat is absorbed during an endothermic process and the environment is cooled but for an exothermic process, heat is being released which leads to the increase in the temperature of the surroundings.

Answer:

the mass of the glass is 2

Answer:

[tex]\% \frac{A}{A_0}=75.9\%[/tex]

Explanation:

Hello!

In this case, since the kinetics of the radioactive decay is assumed to be first-order, it is possible to use the following equation to quantify that change:

[tex]\frac{A}{A_0} =2^{-\frac{t}{t_{1/2}}[/tex]

Thus, given the elapsed time, 635 years, and the half-life, 1599 years, we can compute the fraction of the present amount:

[tex]\frac{A}{A_0} =2^{-\frac{365years}{1599years}\\\\\frac{A}{A_0} =0.759[/tex]

Thus, the percent is:

[tex]\% \frac{A}{A_0}=0.759*100\%\\\\ \% \frac{A}{A_0}=75.9\%[/tex]

Best regards!

Answer:

ACE

Explanation:

Defined skill set: When we say advantages it is seen that it can be visualized during the early stages of one’s career.

Upward growth: Having a specific skill or being specialized in that work would also bring growth in that division. ...

Good package: A job specialization means a person is knowing how to do that work and complete it.

Answer:

44.8 L of N₂.

Explanation:

We'll begin by writing the balanced equation for the. This is illustrated below:

N₂ + 3H₂ —> 2NH₃

From the balanced equation above,

1 mole of N₂ reacted to produce 2 moles of NH₃.

Therefore, Xmol of N₂ will react to produce 4 moles of NH₃ i.e

Xmol of N₂ = (1 × 4)/2

Xmol of N₂ = 2 moles

Thus, 2 moles of N₂ reacted to produce 4 moles of NH₃.

Finally, we shall determine the volume of N₂ required for the reaction. This can be obtained as follow:

1 mole of N₂ occupies 22.4 L at STP.

Therefore, 2 moles of N₂ will occupy = (2 × 22.4) = 44.8 L

Thus, 44.8 L of N₂ is needed to produce 4 moles of NH₃.

Answer:

Percent yield = 57.8 %

Theoretical yield  = 11.781 g

Explanation:

Given data:

Mass of CaO produced = 6.81 g

Mass of CaCO₃ react = 20.7 g

Theoretical yield = ?

Percent yield = ?

Solution:

Chemical equation:

CaCO₃       →      CaO + CO₂

Number of moles of CaCO₃ :

Number of moles = mass/molar mass

Number of moles = 20.7 g/ 100.1 g/mol

Number of moles = 0.21 mol

Now we will compare the moles of CaCO₃ with CaO.

                  CaCO₃        :           CaO

                       1              :              1

                      0.21         :           0.21

Theoretical yield of CaO:  

Mass = number of moles × molar mass

Mass = 0.21 mol × 56.1 g/mol

Mass = 11.781 g

Percent yield:

Percent yield = ( actual yield / theoretical yield ) ×  100

Percent yield = (6.81 g/ 11.781 g) × 100

Percent yield = 57.8 %

Answer:

I did

Explanation:

Answer:

[tex]13.93\ \text{g}[/tex]

Explanation:

Molecular weight of [tex]CaCO_3[/tex] = 100.0869 g/mol

Mass of [tex]CaCO_3[/tex] = 31.7 g

Moles of [tex]CaCO_3[/tex] = [tex]\dfrac{31.7}{100.0869}=0.3167\ \text{mol}[/tex]

Moles of both [tex]CaO[/tex] and [tex]CO_2[/tex] is [tex]0.3167\ \text{mol}[/tex]

Molecular weight of [tex]CO_2[/tex] = 44 g/mol

Mass of [tex]CO_2[/tex] = [tex]44\times 0.3167=13.93\ \text{g}[/tex]

The mass of carbon dioxide formed simultaneously is [tex]13.93\ \text{g}[/tex].

Answer:

physical

Explanation:

Answer:

Endothermic reactions is the result of heat being absorbed.

Explanation:

Melting ice cubes. Melting solid salts. Evaporating liquid water. Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes.

(These are all examples of endothermic reactions.)

Answer: duh

Explanation:

Answer:

Use less heat in your house.

Explanation:

You have blankets in your house, huddle up for a good movie together.

Answer:

Simple ways to reduce heat loss include

Heat loss through windows can be reduced by using double glazing

Heat loss through walls can be reduced using cavity wall insulation

Heat loss through the roof can be reduced by laying loft insulation

Explanation:

Answer:

1. 5.24 g

2. 75.4%

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

MgCl₂ + Na₂SO₄ —> MgSO₄ + 2NaCl

Next, we shall determine the mass of MgCl₂ that reacted and the mass of MgSO₄ produced from the balanced equation. This can be obtained as follow:

Molar mass of MgCl₂ = 24 + (35.5×2)

= 24 + 71

= 95 g/mol

Mass of MgCl₂ from the balanced equation = 1 × 95 = 95 g

Molar mass of MgSO₄ = 24 + 32 + (16×4)

= 24 +32 + 64

= 120 g/mol

Mass of MgSO₄ from the balanced equation = 1 × 120 = 120 g

SUMMARY:

From the balanced equation above,

95 g of MgCl₂ reacted to produce 120 g of MgSO₄.

1. Determination of the ideal yield of magnesium sulfate, MgSO₄.

From the balanced equation above,

95 g of MgCl₂ reacted to produce 120 g of MgSO₄.

Therefore, 4.15 g of MgCl₂ will react to produce = (415 × 120)/95 = 5.24 g of MgSO₄.

Thus, the ideal yield of magnesium sulfate, MgSO₄ is 5.24 g

2. Determination of the percentage yield.

Actual yield of MgSO₄ = 3.95 g

Ideal yield of MgSO₄ = 5.24 g

Percentage yield =?

Percentage yield = Actual yield / Ideal yield × 100

Percentage yield = 3.95 / 5.24 × 100

Percentage yield = 395 / 5.24

Percentage yield of MgSO₄ = 75.4%

Answer:

The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time.

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge and Pacific Ring of Fire are two examples of divergent plate boundaries.

Answer: Divergent

Explanation: im pretty sure its a multiple choice question

Answer:

[tex]n_{Al}=6.00molAl\\\\n_{S}=9.00molS\\\\n_{O}=36.0molO[/tex]

Explanation:

Hello!

In this case, when analyzing the moles of an element inside a compound, we need to keep in mind that a mole ratio should be set up; thus, for aluminum sulfate, we have the following ones:

[tex]\frac{2molAl}{1molAl_2(SO_4)_3} \\\\\frac{3molS}{1molAl_2(SO_4)_3} \\\\\frac{12molO}{1mol1molAl_2(SO_4)_3}[/tex]

Thus, starting by 3.00 moles of aluminum sulfate, the moles of each element turn out:

[tex]n_{Al}=3.00molAl_2(SO_4)_3*\frac{2molAl}{1molAl_2(SO_4)_3} =6.00molAl\\\\n_{S}=3.00molAl_2(SO_4)_3*\frac{3molS}{1molAl_2(SO_4)_3} =9.00molS\\\\n_{O}=3.00molAl_2(SO_4)_3*\frac{12molO}{1molAl_2(SO_4)_3}=36.0molO[/tex]

Best regards!

Answer:

it says the answer is variation

Answer:

They can both be used in an electric circuit.

Explanation:

Though conductors and insulators are very different from each other but still they have a similarity that "they can both be used in an electric circuit".

Conductors are the material that allows electricity to flow and insulators have high resistance and do not allow electricity to flow.

Both conductors and insulators are used in an electric circuit as conductor is used in wires, batteries and bulb to flow current while insulators are used in insulation of wire, switches, plugs and etc. Combination of them makes the circuit shock free.

Hence, the correct answer is "They can both be used in an electric circuit."

Answer:

They can both be used in an electric circuit.

Explanation:

Answer:

1.A lantern has a candle or fuel cell which heats the air and this hot air fills the sky lantern. The consequence of this is that the lantern rises in the air. This happens because the hot air inside the lantern is lighter than the cool air surrounding it. ... This fuel cell is lit before the lantern is launche

2.Whenever something becomes warmer, the kinetic energy of its atoms or molecules has increased. When matter gets warmer, the atoms or molecules in the matter move faster. It's easy to increase the kinetic energy in matter.

Answer: Na+ (8%)

Explanation:

Answer:

I don't know exactly how you want me to answer but I feel like the white bunnies population decrease because the brown bunnies have an advantage with the brown background so the wolves will hunt and kill all the white ones because they are more standing out.

Answer:

If you are thinking all the white bunnies would be gone that would not happen

Explanation:

If you put white bunnies with the withe the brown bunnies they would breed so then there would be more bunnies then there would be more bunnies and wolves.