Determine the number of electrons and protons in the following element: Tc Group of answer choices 43 protons, 43 electrons 43 protons, 56 electrons 56 protons, 43 electrons 99 protons, 43 electrons

Answer:

Explanation:

Part A

2 Al + 3 Cl_2 ==>  2 AlC_3

Part B

The balanced equation tells you for every 2 mols of Al you will produce 2 mols of AlCl_3

Find the mass of 1 mol of AlCl_3

Mass Al =                    27

Mass 3Cl = 3*35.5 = 106.5         Add

Mass 1 mol AlCl_3 = 133.5

Answer: 2 mols of AlCl_2 = 267.0 grams

Answer:

Kg/ ml

Explanation:

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Answer:

having the same number of valence electrons

Explanation:

Answer:

1. direct current. 2. electrical power

Explanation

i believe number 2 is right

Answer:

protons

Explanation:

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We must take into account the suggested mechanism mentioned in your previous mail in order to anticipate the rate equation for the reaction between chlorine atoms (Cl) and ozone (O3):

ClO + O3 Cl + 2O2 (rapid step), step 1.

Step 2 (slow step): ClO + Cl Cl2 + O2.

The whole response can be expressed as follows:

2O3 → 3O2

By taking into account the rate-determining step, which is the slowest step in the suggested mechanism, we may formulate the rate equation for the total reaction. It is Step 2 in this instance:

Rate = k[ClO][Cl]

Where:

k is the rate constant for the reaction

[ClO] is the concentration of ClO

[Cl] is the concentration of Cl

Rate = k[ClO][Cl]

Where: [ClO] is the concentration of ClO [Cl] is the concentration of Cl, and k is the reaction's rate constant

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Answer:

The electron cloud keeps the surronds the atom like abubble and the orbit is what the  electrons go around

Explanation:

The mathematical expression for h is v²/(2g) which is based on conservation of energy and the correct option is option B.

The law of conservation of energy states that energy can neither be created nor be destroyed. Although, it may be transformed from one form to another.

Example, when a fruit is falling to the bottom, potential energy is getting converted into kinetic energy.

Conservation of energy implies

KEinitial = PEfinal

mv²/2 = mgh

therefore, h = v²/2g.

Thus, the ideal selection is option B.

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As stated in the preceding statement Square pyramidal geometry describes the molecules.

An atom is made up of a core nucleus and one or maybe more electrons with negative charge that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present.

The quantity of protons an atom has makes it distinct from other atoms. Consequently, a particle devoid of protons isn't just an atom. But even a single proton constitutes every atom (of hydrogen). Individual particles of something like the periodic table elements like sodium, plutonium, argon, among chlorine are examples of atoms.

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The ester can polymerize if both the acid and the alcohol have different functional groups.

A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all of the substance's physical and chemical properties. Further atom division occurs within molecules. For instance, the symbols for the oxygen atom and molecule are O and O2, respectively.

The smallest component of a substance which possesses both its chemical and physical characteristics. One or even more atoms make up molecules.

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Br2 is a strong oxidizing agent that can oxidize Ag to Ag+ but it cannot oxidize Cl- to Cl2. This is because the reduction potential of Br2 is higher than that of Ag.

That Br2 has a greater tendency to gain electrons and be reduced. On the other hand, Cl- has a lower reduction potential than Br2, so Br2 cannot oxidize Cl- to Cl2.

Reduction potentials indicate how likely a species is to gain electrons. A higher reduction potential means a species is more likely to gain electrons (be reduced). For a reaction to occur spontaneously, the oxidizing agent (the one being reduced) should have a higher reduction potential than the reducing agent (the one being oxidized). Comparing the standard reduction potentials.

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The density of a solution is the mass of the solution divided by the volume of the solution. To find the density of the solution in this question, we need to find the mass of the solution and the volume of the solution.

The mass of the solution can be found by subtracting the mass of the graduated cylinder from the mass of the graduated cylinder containing the solution.
Mass of solution = Mass of graduated cylinder containing solution - Mass of graduated cylinder
Mass of solution = 34.200 g - 28.102 g
Mass of solution = 6.098 g

The volume of the solution is given in the question as 6.25 mL.
Now we can find the density of the solution by dividing the mass of the solution by the volume of the solution.
Density of solution = Mass of solution / Volume of solution
Density of solution = 6.098 g / 6.25 mL
Density of solution = 0.976 g/mL

So the density of the solution is 0.976 g/mL.

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Sc-42 is unstable because it has an imbalance of protons and neutrons in its nucleus.

Scandium-42 (Sc-42) is unstable because it falls outside the zone of stability in terms of the ratio of protons to neutrons in its nucleus. Stable nuclei typically have a balanced ratio of protons to neutrons. In the case of Sc-42, it has 21 protons and 21 neutrons. While this may seem balanced, it is important to consider the nuclear binding forces. In larger nuclei, such as Sc-42, the strong nuclear force that binds protons and neutrons together becomes less effective, resulting in a weaker nuclear stability. As a result, Sc-42 is prone to nuclear decay, such as beta decay, in order to achieve a more stable configuration by adjusting the proton-neutron ratio.

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The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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Answer:

397,570 g/m^3

Explanation:

The volume of the cylinder can be calculated using its height and diameter.

Mass of the soil sample (m) = 30 g

Height of the cylinder (h) = 6 cm

Diameter of the cylinder (d) = 4 cm

First, we need to calculate the radius (r) of the cylinder

Radius (r) = diameter / 2 = 4 cm / 2 = 2 cm = 0.02 m

Now, we can calculate the volume (V) of the cylinder

V = π * r^2 * h

V = 3.14159 * (0.02 m)^2 * 0.06 m

V = 7.5398 E-5 m^3

Calculate the bulk density (ρ) using this formula

ρ = m / V

ρ = 30 g / 7.5398 E-5 m^3

ρ = 397,887 g/m^3

The answer is Mg3 glad I helped

The molecule that could diffuse across the plasma membrane is methane (CH4).

Diffusion is the movement of fluids or substances from regions of high concentration toward regions of lower concentration.

The plasma membrane is the semipermeable membrane that surrounds the cytoplasm of a cell. The semipermeability means that it allows some molecules through but blocks other substances.

The semipermeable plasma membrane readily allows the passage of small hydrophobic and polar molecules.

Therefore, the molecule that could diffuse across the plasma membrane is methane (CH4).

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Answer:

Magma is not a factor responsible for the formation of sedimentary rock.

Explanation:

Answer:

Silver (Ag)

Explanation:

The electronic configuration of copper is shown below;

[Kr]4d10 5s1

We can see that there is only one 5s1 electron. Hence Ag^+ tends to display a pseudo noble gas configuration. This pseudo noble gas configuration explains why silver is prevalent in the +1 oxidation state.

The other transition metals have many stable oxidation states found in nature. Chromium is observed both in +3 and +6 oxidation states. Iron is found in +2 and +3 oxidation states and copper is mostly stable in the +2 oxidation state since the +1 oxidation state readily disproportionate.

Hence silver tends to have only a single ionic charge for reasons aptly stated above.

The Elements in groups 11 through 14 lose electrons to form an outer energy level containing full s, p, and d sublevels. These relatively stable electron arrangements are referred to as "noble gas configurations" or "pseudo-noble gas configurations."

The elements in the groups 11 through 14, which include copper, silver, gold, and lead, lose electrons to form an outer energy level containing full s, p, and d sublevels. These stable electron arrangements are commonly referred to as the noble gas configurations, as they resemble the electron configuration of the noble gases located in the group 18 of the periodic table.

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Answer:

The correct answer is option c, that is, osmotic pressure.

Explanation:

The development of the force, which takes place when two solutions exhibiting distinct solute concentrations are distinguished by a semipermeable membrane is known as osmotic pressure. It is the least pressure that is required to be imparted to a solution to inhibit the inward pure solvent flow through a semipermeable membrane.  

The flow of solvent molecules via a semipermeable membrane to a region of high solute concentration from a region of low solute concentration, until attainment of equilibrium, is done is termed as osmosis.  

Answer:

The percentage efficiency of the electrical element is approximately 82.186%

Explanation:

The given parameters are;

The thermal energy provided by the stove element, \(H_{supplied}\) = 3.34 × 10³ J

The amount thermal energy gained by the kettle, \(H_{absorbed}\)  = 5.95 × 10² J

The percentage efficiency of the electrical element in heating the kettle of water, η%, is given as follows;

\(\eta \% = \dfrac{H_{supplied} - H_{absorbed} }{H_{supplied}} \times 100\)

Therefore, we get;

\(\eta \% = \dfrac{3.34 \times 10^3 - 5.95 \times 10^2}{3.34 \times 10^3} \times 100 = \dfrac{549}{668} \times 100 \approx 82.186 \%\)

The percentage efficiency of the electrical element, η% ≈ 82.186%.

The reaction is spontaneous reaction and for the value of ∆Gº not enough info provided which is option C.

What is spontaneous reaction?

A spontaneous reaction is a chemical or physical process that occurs naturally without the need for external intervention. In a spontaneous reaction, the reactants transform into products under given conditions without requiring an input of energy from an external source.

To determine if the reaction is spontaneous and the value of ΔGº, we need to compare the cell potential (Eºcell) to the standard cell potential (Eºcell°) and use the relationship between ΔGº and Eºcell.

Given:

Eºcell = +2.46 V

To determine if the reaction is spontaneous:

If Eºcell is positive, the reaction is spontaneous. If Eºcell is negative, the reaction is non-spontaneous.

Since Eºcell is positive (+2.46 V), the reaction is spontaneous.

To determine the value of ΔGº:

ΔGº = -nF Eºcell

Where:

ΔGº is the change in Gibbs free energy under standard conditions (in J/mol)

n is the number of moles of electrons transferred in the balanced equation

F is Faraday's constant (96485 C/mol)

Eºcell is the standard cell potential (in V)

Unfortunately, the balanced equation for the cell reaction is not provided, so we don't have the information about the number of moles of electrons transferred (n). Therefore, we cannot solve for the value of ΔGº.

Therefore, the correct answer is:

Spontaneous Reaction, not enough info to solve for ∆Gº.

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Answer:

chemical energy to  kinetic energy

Explanation:

Answer:

A. Chemical energy to kinetic energy and gravitational potential

energy

Explanation:

Answer:

a

Explanation:

A actual molecule of glucose contains six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.

Answer:

B.

Explanation: