the transition state of a reaction can easily be isolated: select the correct answer below: at high temperatures at low temperatures at low pressures

Explanation:

I Would Determine Mass,Volume And Weight

Answer:  A.  1,1,1

Explanation:

The coefficients that will balance the equation; NH4OH(aq) →H2O(l) + NH3(g), is 1, 1, 1, because it proves the total number of atoms of each element on the LHS and RHS of the equation are equal, hence balanced.

LHS          RHS

N = 1            1

H = 5          5

O = 1            1

Answer:

H2SO4 + 2NaOH ----> Na2SO4 + 2H2O

Explanation:

This is balanced equation

The mass of Na₃PO₄ required can be calculated using the molar mass 0.18 g.

Molar mass is the mass of a single molecule or atom of a substance, expressed in grams per mole (g/mol). It is equal to the mass of one mole (6.022×10²³ particles) of the substance in grams and is also known as molecular weight or molecular mass.

The Ksp for calcium phosphate is 5.0 x 10-29. In order to calculate the minimum amount of Na₃PO₄ required to form a precipitate, we must use the following equation:
Ksp = [Ca²⁺]3[PO42-]²
We know the concentration of Ca²⁺ and we can calculate the concentration of PO42- by using the molar mass of Na3PO4:
[PO42-] = (164 g/mol) / (1000 mL/500 mL) = 0.082 mol/L
Now, we can rearrange the Ksp equation to solve for [Ca²⁺]:
[Ca²⁺]3 = Ksp / [PO42-]²
[Ca²⁺]3 = (5.0 x 10-29) / (0.082)²
[Ca²⁺] = 0.0011 mol/L
To obtain this concentration of Ca²⁺ from the 0.100 M solution of Ca(NO3)2, we must add 0.0011 mol of Na₃PO₄. The mass of Na₃PO₄ required can be calculated using the molar mass:
Mass of Na₃PO₄ = (0.0011 mol) x (164 g/mol) = 0.18 g.

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Answer:

barium and silicon has same valence electrons

Explanation:

barium-2,8,18,18,8,2

neon-2,8

silicon-2,8,2,2

carbon-2,4

Answer: both barium and silicone

Explanation:

it was an my exam

91.9 grams of potassium phosphate are produced from 72.9 grams of KOH.

The balanced chemical equation for the given reaction is:

3 KOH + H₃PO₄ → K₃PO₄ + 3 H₂O

From the balanced equation, we can see that the stoichiometric ratio of KOH to K₃PO₄ is 3:1. This means that for every 3 moles of KOH reacted, 1 mole of K₃PO₄ is produced.

First, we need to calculate the number of moles of KOH present in 72.9 g of KOH. The molar mass of KOH is 56.11 g/mol, so the number of moles of KOH is:

72.9 g KOH × (1 mol KOH/56.11 g KOH) = 1.30 mol KOH

Now, using the stoichiometric ratio from the balanced equation, we can calculate the number of moles of K₃PO₄ produced:

1.30 mol KOH × (1 mol K₃PO₄/3 mol KOH) = 0.433 mol K₃PO₄

Finally, we can use the molar mass of K₃PO₄ to convert from moles to grams:

0.433 mol K₃PO₄ × (212.27 g K₃PO₄/mol) = 91.9 g K₃PO₄

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Answer:

Explanation:

Water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds. In a covalent bond, atoms share electrons to form a stable bond. In the case of water, each hydrogen atom shares one electron with the oxygen atom, forming two covalent bonds between the oxygen and hydrogen atoms.

These covalent bonds are polarized, with the oxygen atom having a partial negative charge and the hydrogen atoms having partial positive charges. This polarization contributes to the properties of water, such as its high surface tension and its ability to dissolve ionic and polar substances.

In conclusion, water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds.

Answer:

Mole fraction for C₂₂H₁₉Cl₂NO₃ = 0.0086

Explanation:

Mole fraction remains a sort of concentration. It indicates:

moles of solute / (moles of solute + moles of solvent)

Moles of solute / Total moles.

Solute: Cypermethrin → C₂₂H₁₉Cl₂NO₃

Solvent: Water (PM = 18g/mol)

We calculate moles from solvent: 1000g /18 g/mol = 55.5 moles

We calculate PM for C₂₂H₁₉Cl₂NO₃

12g/mol . 22 + 1g/mol . 19 + 35.45 g/mol . 2+ 14g/mol + 16g/mol . 3 = 416 g/m

Moles of solute: 200 g / 416g/mol = 0.481 moles

Total moles: 0.481 + 55.5 = 55.98 moles

Mole fraction for C₂₂H₁₉Cl₂NO₃ = 0.481 moles / 55.98 moles = 0.0086

To prepare a 250mL aqueous solution using 8.00g of solid NaOH, we will need to dissolve the solid NaOH in water. NaOH is a highly soluble compound, and it readily dissolves in water to form an aqueous solution.

To begin, we need to determine the concentration of the solution we want to prepare. This can be done by calculating the molarity of the solution. Molarity is defined as the number of moles of solute per liter of solution.

To calculate the molarity, we first need to determine the number of moles of NaOH present in the 8.00g of solid. This can be done using the formula:
moles = mass / molar mass

The molar mass of NaOH is 40.00 g/mol (23.00 g/mol for Na and 16.00 g/mol for O and H). Thus, the number of moles of NaOH present in 8.00g of solid is:
moles = 8.00 g / 40.00 g/mol = 0.200 mol

Next, we need to determine the volume of water required to prepare a 250mL solution of this concentration. This can be done using the formula:

moles = concentration x volume
Rearranging the formula, we get:
volume = moles / concentration

The desired concentration is not given, so let's assume we want a 0.5 M solution. Using this concentration and the calculated number of moles, the volume of water required can be calculated as:
volume = 0.200 mol / 0.5 M = 0.400 L or 400 mL

However, we want to prepare a 250mL solution, so we need to adjust the volume of water required. We can do this using the formula:

concentration = moles / volume
Rearranging the formula, we get:
volume = moles / concentration

Plugging in the values, we get:
volume = 0.200 mol / 0.5 M = 0.400 L or 400 mL
To prepare a 250mL solution, we can use 250 mL of water and dissolve the 0.200 mol of NaOH in it. This will give us a 0.8 M solution. We can verify this by calculating the concentration using the formula:

concentration = moles / volume
Plugging in the values, we get:
concentration = 0.200 mol / 0.250 L = 0.8 M

Therefore, to prepare a 250mL aqueous solution using 8.00g of solid NaOH, we need to dissolve the solid in 250mL of water. The resulting solution will have a concentration of 0.8 M.

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Water has the highest latent heat of vaporization of any known liquid. it is true.

The quantity of energy required to turn a portion of a liquid substance into a gas has been known as the enthalpy of vaporization, commonly referred to as the evaporation process or heat of evaporation. The pressure where the transformation occurs determines the enthalpy of vaporization.

The highest known temperature at which water vaporizes. The heat of vaporization is the amount of energy required to vaporize 1 g of a liquid without causing the liquid's temperature to go up.

Therefore, the given statement is true.

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Answer:

Sulfuric acid, spent appears as a black oily liquid. Corrosive to metals and tissue. Density 15 lb /gal.

Explanation:

The valence states provided are general representations and may vary depending on specific conditions and coordination environments.

a. Uvarovite: The mineral formula for uvarovite is Ca3Cr2(SiO4)3. In this formula, the valence state of calcium (Ca) is +2, the valence state of chromium (Cr) is +3, and the valence state of silicon (Si) is +4. Oxygen (O) is usually assigned a valence state of -2.

b. Azurite: The mineral formula for azurite is Cu3(CO3)2(OH)2. In this formula, the valence state of copper (Cu) is +2, carbonate (CO3) has a valence state of -2, and hydroxide (OH) has a valence state of -1.

c. Cuprite: The mineral formula for cuprite is Cu2O. In this formula, the valence state of copper (Cu) is +1, and oxygen (O) is usually assigned a valence state of -2.

d. Gypsum: The mineral formula for gypsum is CaSO4·2H2O. In this formula, the valence state of calcium (Ca) is +2, sulfur (S) has a valence state of +6, and oxygen (O) is usually assigned a valence state of -2. The water molecules (H2O) do not have a net charge.

e. Galena: The mineral formula for galena is PbS. In this formula, the valence state of lead (Pb) is +2, and sulfur (S) has a valence state of -2.

It's important to note that the valence states provided are general representations and may vary depending on specific conditions and coordination environments.

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Answer:

B.

Explanation:

This is physical change as the popcorn has expanded in size.

Chemical symbols are used to quickly identify the elements and atoms in a chemical formula and to standardize the "language of science." One or two letters make up chemical symbols, which are most frequently derived from the names of the elements.

Since they show the element's stoichiometric amount, symbols are important. They indicate the number of atoms of a specific element that are being consumed or released during a chemical process.

The 118 chemical elements are included on this list. The element's precise mass in a chemical reaction is represented by the symbol.

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Answer: Reactants are starting materials and are written on the left-hand side of the equation. Products are the end result of the reaction and are written on the right-hand side of the equation.

Explanation:

Hope this helps!! And you're welcome!

Answer: use the cubic feet per hour formula (cfh)

Explanation: multiply room times height times the width times the length and that gives you the cfh and then you just divide the cfh by the volume of the room to get your answer

Answer:

OA. YESS

Explanation:

They will because they are all over America.

Answer:

The clear liquid is less dense than the black liquid, which is why it floats on top. If the volume were different, you would visually see more clear liquid than black and vice versa.

The clear liquid is less dense than the black liquid

Answer:

A. The clear liquid is less dense than the black liquid

Explanation:

Since the clear liquid since on top of the black one it's density is less. Whatever liquid has a higher density will sink to the bottom of the flask.

The important properties of RNA polymerase from E. coli are It reads the DNA template from its 3' end to its 5' end during RNA synthesis and It uses a single strand of dsDNA to direct RNA synthesis. It is composed of five different subunits. SO, Option D, A and B are correct.

It is a multisubunit enzyme that contains many functional regions that are critical for the synthesis of RNA from a DNA template.The RNA polymerase of E. coli is a complex enzyme that has a number of important properties. The RNA polymerase is composed of five different subunits that are arranged in a holoenzyme configuration.

This holoenzyme is responsible for the recognition of promoter sequences on the DNA template and the subsequent initiation of RNA synthesis. RNA polymerase from E. coli reads the DNA template from its 3' end to its 5' end during RNA synthesis. This is in contrast to DNA polymerase, which reads the DNA template from its 5' end to its 3' end during DNA replication.

RNA polymerase from E. coli uses a single strand of dsDNA to direct RNA synthesis. The enzyme recognizes the template strand and reads it in the 3' to 5' direction, synthesizing the RNA strand in the 5' to 3' direction. This process is called transcription.

Therefore, Option A,B, and D are correct.

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Answer:

3) neutrons and protons

Explanation:

I just completed Grade 11 Chemistry with a 97% and I'm still under the impression that all atoms have only neutrons and protons in their nuclui.

I apologize if this is a question above my current education.

At 298.15K, carbon dioxide's production enthalpy is H f = -393.5 kJ/mol CO 2. (g).

The most stable form of oxygen under ordinary conditions, which is also diatomic oxygen gas, O2, is what we use to create the oxygen gas. Therefore, nothing will change as we switch from O2 to O2. Enthalpy does not alter since there is no change. In light of this, the standard enthalpy of formation is zero.

Think about how gaseous nitrogen reacts with itself. Nitric oxide gas is created when N2(g) reacts with gaseous oxygen O2(g) (g). High temperatures are used to conduct this reaction. These kinds of reactions, in which the system absorbs heat, are known as endothermic reactions.

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Answer:

0.156 M

Explanation:

The computation of the molarity of the acetic acid solution is shown below:

The balanced chemical reaction is

\(KOH + CH_3COOH -->CH_3COOK + H_2O\)

As we know that The KOH and acetic acid would have 1:1 ratio. Here we need to determine the moles of KOH

So,

moles KOH = 0.0155 L ×0.214 mol/L

= 3.317x10-3 mol

Now moles CH_3COOH = 3.317x10-3 mol

[CH3COOH] = moles ÷ volume

= 3.317 × 10^-3 mol ÷ 0.0212 L

= 0.156 M

Explanation:

2H2+O2------->2H2O

its yr balanced equation.

hope it helps

447.81830943999995. that's the mass

After considering the given the data we conclude that the  ionization energy generally increases from left to right across a period. Therefore, the element with the highest ionization energy in period 3 would be located on the right side of the periodic table.

We can also see from the search results that helium has the highest ionization energy of all the elements, while sodium has the lowest ionization energy in period 3. Therefore, we can conclude that the element with the highest ionization energy in period 3 is located to the right of sodium.
Based on the periodic table, we can see that the elements in period 3 are:
Sodium (Na)
Magnesium (Mg)
Aluminum (Al)
Silicon (Si)
Phosphorus (P)
Sulfur (S)
Chlorine (Cl)
Argon (Ar)
Therefore, the element with the highest ionization energy in period 3 is most likely Argon (Ar), which is located on the far right side of the period.
In summary, the element with the highest ionization energy in period 3 is most likely Argon (Ar).
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The function of a power source in an electric circuit is to  provide a steady flow of electrons.

An electric circuit comprises of individual electronic components like resistors, diodes,transistors , capacitors,etc. which are connected to each other by means of wires through which electric current flows.It can also be referred to as an electronic circuit.

It usually comprises of at least one active component . The combination of wires and simple and complex components allows operations to be performed, amplification of signals, displacement of data and performing of computations.

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Answer:  a steady flow of electrons

Explanation:

Explanation:

a)  Using the provided information about the density  of gold, the sample size, thickness, and the following  equations and comersion factors, find the area of   the gold leaf:

\(V=l \cdot w \cdot h=A \cdot h\\m=\rho \cdot V\)

Gold \(_{\rho}=19.32 \mathrm{g} / \mathrm{cm}^{3}\)

\(1 \mu=10^{-6} \mathrm{m}\)

First, find the volume of the sample and then find the area of the sample.

\(V=\frac{m}{\rho}=\frac{27.6 \mathrm{g}}{19.32 \mathrm{g} / \mathrm{cm}^{3}} \cdot\left(\frac{0.01 \mathrm{m}}{1 \mathrm{cm}}\right)^{3}\) \(=\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}\)

\(V=A \cdot h \rightarrow A=\frac{V}{h}=\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}{10^{-6} \mathrm{m}} \approx 1.429 \mathrm{m}^{2}\)

b.  Using the provided information from part \(a\) ), the radius of the cylinder, and the following equation for the volume of a cylinder, find the length of the fiber :

\(V=\pi r^{2} h \rightarrow h=\frac{V}{\pi r^{2}}\)

\(h=\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}{\pi \cdot\left(2.5 \times 10^{-6} \mathrm{m}\right)^{2}} \approx 72778 \mathrm{m}\)

Answer: The energy of a photon is given by the formula:

E = hf

Where E is the energy of the photon, h is the Planck constant (6.626 x 10^-34 J·s), and f is the frequency of the photon.

We are given the energy of a single photon as 5.80E-31 kJ/photon. We need to convert this to joules:

5.80E-31 kJ/photon x (1E3 J/1 kJ) = 5.80E-34 J/photon

Now we can use the formula for energy to solve for frequency:

E = hf

f = E/h

f = (5.80E-34 J/photon) / (6.626 x 10^-34 J·s)

f = 0.876 x 10^12 s^-1

Finally, we can convert the frequency to kilohertz:

f = (0.876 x 10^12 s^-1) / (1 x 10^3 s^-1/KHz)

f = 876 KHz

Therefore, the frequency at which the radio station is broadcasting is 876 KHz.

The local AM radio station is broadcasting at a frequency of 8.55KHz.

The frequency of a radio station is related to the energy of the photons it emits. Using the formula E = hf, we can determine the frequency of the radio station given the energy of the photons it emits. In this formula, E is the energy of the photon in joules, h is Planck’s constant (6.626 x 10-34 Js) and f is the frequency of the radio station in hertz (Hz).

Therefore, the frequency of the radio station can be calculated by dividing the energy of the photon (5.80E-31 kJ/photon) by Planck’s constant (6.626 x 10-34 Js) which is equal to 8.78 x 108 Hz. To convert this frequency to KHz, we can simply divide 8.78 x 108 Hz by 103, resulting in a frequency of 8.55KHz. Therefore, the local AM radio station is broadcasting at a frequency of 8.55KHz.

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Answer:

2.77532244 grams

Explanation:

Percent yeild=actual/theoretical * 100

Plug in the values

93.4452=actual/2.97 *100

0.934452*2.97=2.77532244