Atom 1 has 19 electrons 19 protons and 20 neutrons atoms 2 has 19 electrons , 20 neutrons and 19 protons

Flerovium--289 decays to form Gadolinium--160, 5 neutrons, and Francium--124.

The given decay of Flerovium--289 can be represented as:

Flerovium--289 → Gadolinium--160 + X + 5n

Here, X represents the unknown isotope that is formed during the decay.

To balance this nuclear transformation, we need to ensure that the total atomic and mass numbers are equal on both sides of the equation.

Atomic number balance:

On the left-hand side, Flerovium has an atomic number of 114, so the sum of the atomic numbers on the right-hand side must also be 114. Gadolinium has an atomic number of 64, so the sum of the atomic numbers of X and the 5 neutrons must be 50. Since neutrons do not have an atomic number, X must have an atomic number of 50. Therefore, X is the element tin, which has the atomic number 50.

Mass number balance:

On the left-hand side, Flerovium--289 has a mass number of 289, so the sum of the mass numbers on the right-hand side must also be 289. Gadolinium--160 has a mass number of 160, and each neutron has a mass number of 1, so the sum of the mass numbers of X and the 5 neutrons must be 129. Francium--124 has a mass number of 124, so X must have a mass number of 5. Therefore, X is the isotope tin--125, which has a mass number of 125.

The balanced nuclear transformation is:

Flerovium--289 → Gadolinium--160 + Tin--125 + Francium--124 + 5n

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Answer: The equilibrium constant is \(3.3\times 10^{-4}\)

Explanation:

Initial concentration of \(I_2\) = 0.095 M  

The given balanced equilibrium reaction is,

                            \(I_2(g)\rightleftharpoons 2I(g)\)

Initial conc.          0.095 M       0 M

At eqm. conc.     (0.095-x) M   (2x) M

Given : 2x = 0.0055

x = 0.00275

The expression for equilibrium constant for this reaction will be,

\(K_c=\frac{[l]^2}{[I_2]}\)  

Now put all the given values in this expression, we get :

\(K_c=\frac{(0.0055)^2}{(0.095-0.00275)}\)

\(K_c=\frac{(0.0055)^2}{0.09225}=0.00033\)

Thus the equilibrium constant is \(3.3\times 10^{-4}\)

Answer:

Magnetic force

Explanation:

The mole of the substance, given the data from the question is 0.0014 mole

This is simply defined as the mole of solute per kilogram of water. Mathematically, it is expressed as

Molality = mole / mass (Kg) of water

Mole = molality × mass of water

Mole of substance = 0.056 × 0.0254

Mole of substance = 0.0014 mole

Thus, the mole of the substance is 0.0014 mole

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Answer: twice the momentum

Explanation:

Answer:

23.85

Explanation:

is over of percent over 100

\(\frac{x}{159}\)x\(\frac{15}{100}\)

15 x 159 = 2385

2385 ÷ 100 = 23.85

If an athlete weighs 159 lb and has 15.0% % body fat by weight, the athlete's body contains approximately 23.84 pounds of fat.

To calculate the number of pounds of fat in the athlete's body, we can use the following steps:

Convert the athlete's weight from pounds to kilograms:

159 lb × 0.4536 kg/lb = 72.1224 kg

Calculate the weight of the athlete's body fat:

72.1224 kg × 0.150 = 10.81836 kg

Convert the weight of body fat from kilograms to pounds:

10.81836 kg × 2.2046 lb/kg = 23.8447 lb

Therefore, the athlete's body contains approximately 23.84 pounds of fat.

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On changing dielectric, charge changes directly. It is directly proportional to dielectric permittivity of free space.

In electromagnetism, a dielectric (or dielectric medium) is an electrical insulator that can be captivated by an applied electric field. At the point when a dielectric material is put in an electric field, electric charges don't course through the material as they do in an electrical conduit, since they have no inexactly bound, or free, electrons that might float through the material, however rather they shift, just somewhat, from their typical balance positions, causing dielectric polarization.

Due to dielectric polarization, positive charges are dislodged toward the field and negative charges change in the course inverse to the field (for instance, assuming that the field is moving lined up with the positive x hub, the negative charges will change in the negative x course). This makes an inside electric field that decreases the general field inside the actual dielectric. Assuming a dielectric is made out of pitifully reinforced particles, those atoms become energized.

We know that Q=CV where Q is charge, C is capacitance and V is the voltage of capacitor.

Since, capacitance is equal to= (∈A₀) /d  where ∈ is permittivity of free space or dielectric value.

If we increase dielectric value, capacitance will increase. When capacitance increase ,charge will also increase.

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The volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L

HOW TO CALCULATE VOLUME OF ETHANOL:

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answer

the mole should be considered as an SI unit because this quantity is used to determine many other units of measure such as Liters for volume, the pressure of a system in pascals. it is useful in all chemical studies

The balanced chemical equation for the reaction is:

2NaOH(aq) + FeCl₂(aq) --> 2NaCl(aq) + Fe(OH)₂(s)

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

Sodium hydroxide => NaOH

Iron (II) chloride => FeCl₂

2NaOH(aq) + FeCl₂(aq) --> 2NaCl(aq) + Fe(OH)₂(s)

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The theoretical yield of the reaction is 1.13 g. The acid is the limiting reactant.

In a given chemical reaction, the theoretical yield can only be obtained from the balanced reaction equation. We have been given the balanced reaction equation in the question so we can work from there.

Number of moles of Cr =  0.50 g /52 g/mol = 9.6 * 10^-3 moles

Number of moles of acid =  0.75 g/98 g/mol = 7.7 * 10^-3 moles

Given that the reaction is 1:1, the limiting reactant would be the acid.

The theoretical yield is obtained from;

Number of moles of product * molar mass of product

We substitute to obtain;

7.7 * 10^-3 moles * 147 g/mole (since the reaction is 1:1)

= 1.13 g

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Answer:

PbBr2 + LiNO3

And goodluck

Answer:

1) easy compressed

2) fills its container

3) far more space

Explanation:

The sample of nitrogen gas will occupy 236.54 mL of volume at 1.05 atm pressure.

Boyle's law is the ideal law that defines the relationship between pressure and volume of gases. A law is given if the temperature is kept constant. Pressure and volume exhibit an inverse relationship.

The Boyle's Law is given as:

P₁V₁ = P₂V₂

Given,

Initial pressure (P₁) = 0.974 atm

Initial volume (V₁) = 255 mL

Final pressure (P₂) = 1.05 atm

Final volume = V₂

The final volume at 1.05 atm is calculated by substituting values in Boyle's Law as:

P₁V₁ = P₂V₂

0.974 × 255 = 1.05 V₂

V₂ =  248.37 ÷ 1.05

= 236.54 mL

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The formula for calculating the amount of energy or heat released is:

ΔH = C ΔT

where ΔH is heat of combustion, C is heat capacity, while ΔT is change in temperature

ΔH = 8.69 kJ / °C * (5.14°C)

ΔH = 44.67 kJ

Then we calculate the moles of CH3OH which has molar mass of 32.04 g/mol:

moles = 1.922 / 32.04 = 0.05999 mol

SO the molar heat of combustion is:

ΔHm = 44.67 kJ / 0.0599875 mol

ΔHm = 744.60 kJ / mol

Answer:

If you poured 1 mole of acetic acid into a pool and 1 mole of acetic acid into a cup, it would not take the same amount of drops of NaOH solution to neutralize both. This is because the concentration of acetic acid in the pool would be much lower than in the cup, and therefore more NaOH would be required to neutralize the cup.

To understand why this is the case, we need to look at the concept of molarity. Molarity is defined as the number of moles of solute per liter of solution. Therefore, if you have 1 mole of acetic acid in a cup with a volume of 0.1 L, the molarity of the solution would be 10 M (1 mole / 0.1 L). If you have 1 mole of acetic acid in a pool with a volume of 1000 L, the molarity of the solution would be 0.001 M (1 mole / 1000 L).

When you add NaOH to an acidic solution like acetic acid, a neutralization reaction occurs. The general equation for this reaction is:

acid + base → salt + water

In the case of acetic acid and NaOH, the specific equation is:

CH3COOH + NaOH → CH3COONa + H2O

This reaction shows that one mole of NaOH reacts with one mole of acetic acid to produce one mole of sodium acetate and one mole of water.

Therefore, if you add drops of NaOH to both the cup and the pool containing acetic acid, it will take more drops to neutralize the cup than it will to neutralize the pool. This is because there are more moles of acetic acid per liter in the cup than in the pool.

If C3H8O is dissolved in water, it would be expected to be a strong electrolyte.

A strong electrolyte is a solute or solution (already an electrolyte) that can completely dissociates in solution.

C3H8O is one of those compounds expected to be a strong electrolyte.

Thus, if C3H8O is dissolved in water, it would be expected to be a strong electrolyte.

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Problem 1:

we need 80 g of the 15% solution and 120 g of the 20% solution.

Let x be the mass of the 15% solution needed and y be the mass of the 20% solution needed.

x + y = 200 (total mass of the two solutions)

0.15x + 0.2y = 0.17(200) (total amount of solute in the two solutions)

Solving these equations,  x = 80 g and y = 120 g.

Therefore, we need 80 g of the 15% solution and 120 g of the 20% solution.

Problem 2:

we need 120 g of the 18% solution and 180 g of the 5% solution.

Let x be the mass of the 18% solution needed and y be the mass of the 5% solution needed.

x + y = 300

0.18x + 0.05y = 0.07(300)

Solving these equations, x = 120 g and y = 180 g.

Therefore, we need 120 g of the 18% solution and 180 g of the 5% solution.

Problem 3:

The mass percentage of the final solution is 135 g/550 g × 100% = 24.55%.

The total mass of the final solution is 200 g + 350 g = 550 g.

The total amount of solute in the final solution is:

0.15(200 g) + 0.20(350 g) = 65 g + 70 g = 135 g.

Therefore, the mass percentage of the final solution is 135 g/550 g × 100% = 24.55%.

Problem 4:

The mass percentage of the final solution is 110 g/335 g × 100% = 32.84%.

The total mass of the final solution is 300 g + 35 g = 335 g.

The total amount of solute in the final solution is:

0.15(300 g) + 35 g = 75 g + 35 g = 110 g.

Therefore, the mass percentage of the final solution is 110 g/335 g × 100% = 32.84%.

Problem 5:

The mass percentage of the final solution is 18.18%.

Calculate the final mass of the solution:

Final mass = 400 g + 150 g = 550 g

Calculate the mass of solute in the 25% solution:

Mass of solute = 0.25 x 400 g = 100 g

Calculate the mass percentage of the final solution:

Mass percentage = (mass of solute ÷ final mass) x 100%

Mass percentage = (100 g ÷ 550 g) x 100%

Mass percentage = 18.18%

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Answer:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below

Explanation: welcome

Answer:

The warmer, lighter air rises, bringing cooler, heavier air to low altitudes.

Air at higher altitudes doesn't have as much air weighing down on it from above.

Explanation:

In short - air pressure is the result of the cumulative force that air molecules act on objects below them due to Earth's gravity. The higher the altitude, the less air molecules there are to act a force below them, and therefore, there's less air pressure at higher altitudes.

Answer:

I believe it's the second option "Lighter air molecules float above heavier air molecules

Explanation:

I believe this because as altitude increases the amount of gas molecules decrease which makes the air less dense

The period of a wave is directly proportional to the wavelength of the wave. True

Period is the time it takes to complete one cycle of a wave, and wavelength is the distance between two identical locations in the neighbouring cycles of a wave. The number of cycles in a second is defined as frequency. In other terms, frequency = 1 / period.

An electromagnetic wave's wavelength is proportional to its frequency. Likewise, an electromagnetic wave's frequency is equal to the reciprocal of its period.

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The tapeworm can cause inflammation and damage to the lining of the horse's intestines.

A tapeworm living in the digestive system of a horse can impact the horse in a number of ways. The tapeworm can cause inflaming and impairment to the lining of the horse's intestines, leading to malabsorption of nutrients and potential weight loss. In severe cases, the tapeworm can also cause colic, which is a painful condition of the horse's gastrointestinal tract. Additionally, the tapeworm eggs can be shed in the horse's feces, which can contaminate pastures and potentially infect other horses or animals that graze in the same area.

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The entire question is:

How does A tapeworm living in the digestive system of a horse impact the horse? Also add a note on how other animals in the area might be infected because of this horse.

Answer:

Filter it

Explanation:

Answer:

14

Explanation:

150 grams of NaOH is approximately equal to 2.256 x 10^24 particles of NaOH.

To convert grams of NaOH to particles of NaOH, we need to use the concept of molar mass and Avogadro's number. The molar mass of NaOH is calculated by adding the atomic masses of sodium (Na), oxygen (O), and hydrogen (H) together. It can be determined as follows:

Na: 22.99 g/mol

O: 16.00 g/mol

H: 1.01 g/mol

Molar mass of NaOH = (22.99 g/mol) + (16.00 g/mol) + (1.01 g/mol) = 40.00 g/mol

Now, we can use the molar mass to convert grams of NaOH to moles. Since 1 mole contains Avogadro's number (approximately 6.022 x 10^23) particles, we can determine the number of particles as follows:

150 g NaOH * (1 mol NaOH / 40.00 g NaOH) * (6.022 x 10^23 particles / 1 mol NaOH) ≈ 2.256 x 10^24 particles

It's important to note that this calculation assumes the substance is pure NaOH and that the molar mass and Avogadro's number are accurate.

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Answer:

The correct option is 1, since by changing the partial pressures the gas pressures change, the gases go from the zones of higher partial pressure to the zones of lower partial pressure, an example of this is the homeostasis of the human pulmonary alveolus in gas exchange with CO2 and O2.

Explanation:

In the first it increases, in the second the volume is maintained, and in the third reaction it decreases.

Answer:

1. Increase volume.

2. No change.

3. No change.

Explanation:

Hello,

In this case, if we want to shift the reaction rightwards, based on the Le Chatelier's principle we would have to:

1. For this reaction:

\(CaCO_3(s) \rightleftharpoons CaO(s) + CO_2(g)\)

- Increase the volume or decrease the pressure, since there are more gaseous moles at the products.

2. For this reaction:

\(S(s) + 3F_2(g) \rightleftharpoons SF_6(g)\)

- Do nothing since it is not possible to achieve it as we have the same number of gaseous moles at both reactants and products.

3. For this reaction:

\(Cl_2(g) + I_2(g)\rightleftharpoons 2ICl(g)\)

- Do nothing since it is not possible to achieve it as we have the same number of gaseous moles at both reactants and products.

Regards.