a proton is placed 2x10-14 m away from the center of a terbium-160 nucleus, which has 65 protons and 95 neutrons. what will happen?

Answer:

1.26666.....

Explanation:

Density is = to mass/volume

Answer: 19/15 in decimal form 1.267

Explanation:

when solving for density you divide mass by volume, when solving vor volume divide density and mass, finding mass multiply density and volume

0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

Volume of HCl solution = 12.6 mL = 0.0126 L

The concentration of HCl solution = 0.14 M We have to find the amount of KOH required to neutralize the given volume and concentration of HCl.

In order to calculate the amount of KOH, we need to first calculate the number of moles of HCl using the formula of Molarity;

Molarity = (Number of moles of solute) / (Volume of solution in liters)0.14 M = n(HCl) / 0.0126L0.14 × 0.0126 = n(HCl)n(HCl) = 0.001764 moles of HCl

Now, the balanced chemical equation for the reaction of KOH with HCl is;KOH + HCl → KCl + H₂OOne mole of KOH reacts with one mole of HCl.

Therefore, the number of moles of KOH required to neutralize the given amount of HCl would be equal to 0.001764 moles. Now, let's calculate the amount of KOH in grams.

Molar mass of KOH = 39.1 + 16.00 + 1.008 = 56.108 g/mol0.001764 moles of KOH would weigh = 0.001764 × 56.108 = 0.0989

hence, the amount of KOH required to neutralize the given volume and concentration of HCl would be 0.0989 grams.

Thus, 0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

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Answer: The mass of mercury will be 57.5 micrograms.

The given question deals with Analytical Chemistry where Concentration is asked here.

Concentration: Generally concentration is defined as amount of the substance per unit volume. Concentration is also expressed in parts per million(ppm) when it is a small quantity as in case of mercury content in fish.

Explanation:   Given mass of the fish = 250 g,

                         ppm = 0.23

               Now mass of mercury = 0.23 ppm × 250 g                                                        

                                                     = 0.23/1,000,000 × 250g

                                                    =0.23×250/1,000,000 g

                                                    = 0.0000575 g

                                                    =57.5 micrograms

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Answer:

Few Examples of Kinetic Energy

The following are typical examples of kinetic energy:

A wrecking ball used to demolish a building through utilization of the kinetic energy it possesses in motion.

Conversion of liquid water to steam, by virtue of the fast movement of the molecules of the liquid upon agitation

A golf ball after being struck off the tee

An asteroid falling towards Earth at incredible speed

A downhill skier traveling down a hill

The flow of a river

An airplane in motion (possesses a tremendous amount of kinetic energy. This is because the mass of the airplane and the velocity at which it moves are enormous)

Explanation:

Answer:

"The battery in the car has potential energy in the form of chemical energy. As the car is turned on and moves, this potential energy becomes kinetic energy."

Explanation:

Remember to change it up a bit.

Answer:

two

Explanation:

2

Answer:

two

Explanation:

nucleic acids are made up of chains of many repeating units called nucleotides. the dna molecule consists of two such chains that spiral around an imaginary axis to form a double helix (spiral.)

hope this helps :)

have a nice day !!

You have 140 g of AgNO3 and need to make a 0.35 M solution. The final volume of the solution is approximately 2.35 L. The correct answer is A. 2.35 L.

To find the final volume (litres) of the 0.35 M AgNO3 solution using 140 g of AgNO3, we'll first calculate the moles of AgNO3 and then use the molarity formula. The molar mass of AgNO3 is 169.87 g/mol.
1. Calculate moles of AgNO3:
moles = mass (g) / molar mass (g/mol)
moles = 140 g / 169.87 g/mol
moles ≈ 0.824 mol
2. Use the molarity formula:
Molarity (M) = moles of solute/volume of solution (L)
Rearrange the formula to find the volume:
Volume (L) = moles of solute / Molarity (M)
3. Substitute the values:
Volume (L) = 0.824 mol / 0.35 M
Volume (L) ≈ 2.354 L

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The equilibrium composition of CO₂ is determined to be 0.59 kmol.

To solve this problem, we can use the ideal gas law and the equilibrium constant expression for the reaction:

CO + 1/2O₂ ⇌ CO₂

Given the initial number of moles of CO and O₂, we can set up an ICE (Initial, Change, Equilibrium) table. Let's assume that x kmol of CO is consumed and converted to CO₂. Then, the change in the number of moles for each species is:

CO: -x kmol

O₂: -0.5x kmol

CO₂: +x kmol

At equilibrium, the number of moles of CO is (2 - x) kmol, O₂ is (3 - 0.5x) kmol, and CO₂ is x kmol. The equilibrium constant expression can be written as:

Kp = (P_CO₂) / (P_CO * P_O₂(1/2))

Given Kp = 16.461 and the pressure conditions, we can substitute the equilibrium partial pressures into the expression:

16.461 = x / ((2 - x) * (3 - 0.5x)(1/2))

Solving this equation yields x ≈ 0.59 kmol.

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The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.

The concentration of hydrogen ions (H+) and hydroxide ions (OH-) determine whether a solution is acidic, basic or neutral. The pH scale ranges from 0 to 14. If the pH value of a solution is less than 7, it is acidic. If the pH value is greater than 7, it is basic. If the pH value is equal to 7, it is neutral.A solution is considered to be acidic if it has a higher concentration of H+ ions and a lower concentration of OH- ions. In an acidic solution, the concentration of H+ ions is greater than the concentration of OH- ions. The higher the concentration of H+ ions, the more acidic the solution becomes.On the other hand, a solution is considered to be basic if it has a lower concentration of H+ ions and a higher concentration of OH- ions. In a basic solution, the concentration of OH- ions is greater than the concentration of H+ ions. The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.
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Answer:

Engineering is all about solving problems using math, science, and technical knowledge. And engineers have solved a lot of problems in the world by designing and building various technologies. We have everything from machines that can breathe for you in hospitals to suspension bridges to computers we use every day. All of these things were once designed by engineers using the engineering design process.

Explanation:

Answer:

Students will have to use their brains to solve problems and challenges they will face to find a solution to cleaning up oil spills. Students will face failures after completing their solution, lots of research, and problems during the making of their solutions. What will work? What won't?

Explanation:

Hope this helps!

Answer:

99%

Explanation:

It have Full cream and it is yummy

For fermentation process to successfully occur, Oxygen gas (O2) must not enter the carboy, because the pyruvate used in the process, gets completely oxidized when oxygen gas is present.

Fermentation is a metabolic process that always must take place in the absence of oxygen. Many of the beneficial microorganisms, create desired changes in different types of beverages and foods through this process of fermentation. And the resulting products of fermentation reaction thus formed, have better/more favorable flavor and taste, and also more life as they get preserved during the process. In addition to this, these microorganisms also provide several health benefits.

The process of fermentation to occur successfully, does not require oxygen gas as it is an anaerobic process. If by any chance or means, oxygen gas is present, the pyruvate used would be completely oxidized during the reaction forming carbon dioxide and water molecules as the by products, by the action of yeast spiration. Moreover, these yeast species needed in the reaction, produce ethanol only in an anaerobic (oxygen-less) environment by another process called the Pasteur Effect.

There are generally three types of fermentation processes based on the end products obtained using the pyruvate. They are:

Acetic Acid Fermentation, Lactic Acid Fermentation, and Alcoholic Fermentation.

Therefore, Oxygen Gas is the correct answer to this question.

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Answer:

2

Explanation:

Answer:

1. Sperm - The male reproductive cell

2. Fertilization - The union of the male gamete (sperm cell) and the female gamete (egg cell)

3. Conception - The fertilization of a female egg cell with a male sperm cell

4. Testes, Testicles - Male gonads

5. Ovary, Ovaries - Female gonads

6. Gonad - Gamete-producing organ in animals

7. Eggs - Female reproductive cells

8. Hormone - a body chemical that controls growth and activity

Explanation:

Hope this helped!

Answer:

the answer is B. the energy required to go from a solid to liquid

B. The latent heat of fusion is the energy required to go from a solid to a liquid. It is the amount of heat energy that must be added to a substance at its melting point to convert it from a solid to a liquid, without changing its temperature.

Latent heat is the amount of heat energy required to change the phase of a substance without changing its temperature.

Option A describes the energy required to break molecular bonds, which is called the bond dissociation energy.

Option C describes the energy required to go from a solid to a gas, which is called the latent heat of sublimation.

Option D describes the energy required to go from a liquid to a gas, which is called the latent heat of vaporization.

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The wavelength of the first line (n=4 to n=3) in the Balmer series is 656.3 nm. The wavelength of the second line (n=4 to n=2) in the Balmer series is 486.1 nm. The wavelength of the third photon, calculated above, is 594.1 nm.

The hydrogen atom has a single electron in its shell. Electrons in a hydrogen atom have a set of allowed energy levels. The ground state has the lowest energy level, and n represents the electron's energy level in the hydrogen atom.

Electrons gain energy and rise to a higher energy level when they are stimulated by energy from an external source such as an electric current or a photon beam.The hydrogen atom is said to be excited when its electron absorbs energy and rises to a higher energy level.

The excited atom then emits the energy in the form of electromagnetic radiation, which includes visible light and other wavelengths.The hydrogen atom has a characteristic spectrum due to the transitions between its energy levels. The wavelengths of photons absorbed or emitted when electrons in a hydrogen atom move between energy levels are determined by the following equation:

E=(hc)/λ whereE = energy of the photonh = Planck's constanctc = speed of lightλ = wavelength of the photonLet us now determine the wavelengths of the other two photons. When a hydrogen atom is excited from its ground state to the n=4 state, it emits a series of spectral lines known as the Balmer series.

The Balmer series is a series of lines in the visible light region of the spectrum. The wavelength of the first line (n=4 to n=3) in the Balmer series is 656.3 nm. The wavelength of the second line (n=4 to n=2) in the Balmer series is 486.1 nm.The third photon's wavelength can be calculated as follows

:Energy of the photon = (hc)/λEnergy of the photon = (6.626 x 10^-34 J s) x (2.998 x 10^8 m/s) / (1882 x 10^-9 m) = 3.328 x 10^-19 JThe wavelength of the third photon is calculated as follows: Energy of the photon = (hc)/λ3.328 x 10^-19 J = (6.626 x 10^-34 J s) x (2.998 x 10^8 m/s) / λλ = (6.626 x 10^-34 J s) x (2.998 x 10^8 m/s) / (3.328 x 10^-19 J)λ = 594.1 nmThe first two wavelengths are given by the Balmer series.

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Answer:

The average atomic mass of zinc is 65.38 u.

Explanation:

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Give brainliest please!

Answer:

It is like an arch because it bends horizontal just like we do and the legs of the arch support the stone like our feet and legs support the weight of us.

Explanation:

Answer:

In the laboratory, sulphur dioxide is prepared by the reaction of metallic sulphite or a metallic bisulphite with dilute acid.

Explanation:

For example, a reaction between the dilute sulphuric acid and sodium sulphite will result in the formation of SO2. 2.

Carbondixoide gas is the type of greenhouse gas which is more difficult to control and eliminate.

Carbon dioxide is the greenhouse gas that is emitted through human activities which can be controlled by reducing human activities which is impossible for us because large number of products are produced from which carbondioxide gas is released.

So we can conclude that carbondixoide gas is the type of greenhouse gas which is more difficult to control and eliminate.

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A sociologist studying New York City ethnic groups wants to determine if there is a difference in income for immigrants from four different countries during their first year in the city. The degrees of freedom for the Between (BET) and Within (W) groups are d f BET = 3 and d f W = 13, respectively. The calculated F statistic is approximately 0.577.

To perform the ANOVA test and calculate the relevant values, let's first organize the data into a table:

Country I: 12.9, 9.8, 10.7, 8.5, 16.9

Country II: 8.8, 17.9, 19.8, 10.3, 19.3

Country III: 20.6, 16.8, 22.6, 5.8, 19.5

Country IV: 17.7, 8.7, 14.1, 21.7

To calculate the necessary values, we will use the following formulas:

SSTOT = SSBET + SSW

d f BET = k - 1

d f W = N - k

MSBET = SSBET / d f BET

MSW = SSW / d f W

F = MSBET / MSW

Where:

k = number of groups (countries)

N = total number of observations

SSBET = sum of squares between groups

SSW = sum of squares within groups

Now let's calculate the values step by step:

Calculate the mean for each group:

Country I: Mean-I = (12.9 + 9.8 + 10.7 + 8.5 + 16.9) / 5

Country II: Mean-II = (8.8 + 17.9 + 19.8 + 10.3 + 19.3) / 5

Country III: Mean-III = (20.6 + 16.8 + 22.6 + 5.8 + 19.5) / 5

Country IV: Mean-IV = (17.7 + 8.7 + 14.1 + 21.7) / 4

Calculate the overall mean:

Overall Mean = (Sum of all observations) / (Total number of observations)

Calculate SSTOT (Total Sum of Squares):

SSTOT = Σ(xi - Overall Mean)²

Calculate SSBET (Sum of Squares Between Groups):

SSBET = Σ(Ni × (Mean-i - Overall Mean)²), where Ni is the number of observations in each group.

Calculate SSW (Sum of Squares Within Groups):

SSW = Σ(xi - Mean-i)², where xi is each individual observation.

Calculate the degrees of freedom:

d f BET = k - 1

d f W = N - k

Calculate MSBET (Mean Square Between Groups) and MSW (Mean Square Within Groups):

MSBET = SSBET / d f BET

MSW = SSW / d f W

Calculate the F statistic:

F = MSBET / MSW

Now let's perform the calculations:

Calculate the means:

Mean-I = (12.9 + 9.8 + 10.7 + 8.5 + 16.9) / 5 ≈ 11.76

Mean-II = (8.8 + 17.9 + 19.8 + 10.3 + 19.3) / 5 ≈ 15.22

Mean-III = (20.6 + 16.8 + 22.6 + 5.8 + 19.5) / 5 ≈ 17.06

Mean-IV = (17.7 + 8.7 + 14.1 + 21.7) / 4 ≈ 15.55

Calculate the overall mean:

Overall Mean = (12.9 + 9.8 + 10.7 + 8.5 + 16.9 + 8.8 + 17.9 + 19.8 + 10.3 + 19.3 + 20.6 + 16.8 + 22.6 + 5.8 + 19.5 + 17.7 + 8.7 + 14.1 + 21.7) / 17 ≈ 14.618

Calculate SSTOT (Total Sum of Squares):

SSTOT = (12.9 - 14.618)² + (9.8 - 14.618)² + (10.7 - 14.618)² + (8.5 - 14.618)² + (16.9 - 14.618)² + (8.8 - 14.618)² + (17.9 - 14.618)² + (19.8 - 14.618)² + (10.3 - 14.618)² + (19.3 - 14.618)² + (20.6 - 14.618)² + (16.8 - 14.618)² + (22.6 - 14.618)² + (5.8 - 14.618)² + (19.5 - 14.618)² + (17.7 - 14.618)² + (8.7 - 14.618)² + (14.1 - 14.618)² + (21.7 - 14.618)²

SSTOT ≈ 199.760

Calculate SSBET (Sum of Squares Between Groups):

SSBET = (5 × (11.76 - 14.618)²) + (5 × (15.22 - 14.618)²) + (5 × (17.06 - 14.618)²) + (4× (15.55 - 14.618)²)

SSBET ≈ 23.484

Calculate SSW (Sum of Squares Within Groups):

SSW = (12.9 - 11.76)² + (9.8 - 11.76)² + (10.7 - 11.76)² + (8.5 - 11.76)² + (16.9 - 11.76)² + (8.8 - 15.22)² + (17.9 - 15.22)² + (19.8 - 15.22)² + (10.3 - 15.22)² + (19.3 - 15.22)² + (20.6 - 17.06)² + (16.8 - 17.06)² + (22.6 - 17.06)² + (5.8 - 17.06)² + (19.5 - 17.06)² + (17.7 - 15.55)²+ (8.7 - 15.55)² + (14.1 - 15.55)² + (21.7 - 15.55)²

SSW ≈ 176.276

Calculate the degrees of freedom:

d f BET = k - 1 = 4 - 1 = 3

d f W = N - k = 17 - 4 = 13

Calculate MSBET (Mean Square Between Groups) and MSW (Mean Square Within Groups):

MSBET = SSBET / d f BET

MSW = SSW / d f W

MSBET ≈ 23.484 / 3 ≈ 7.828

MSW ≈ 176.276 / 13 ≈ 13.559

Calculate the F statistic:

F = MSBET / MSW

F ≈ 7.828 / 13.559 ≈ 0.577

Now, let's summarize the ANOVA test results in a table:

Source SS d f MS F

Between 23.484 3 7.828 0.577

Within 176.276 13 13.559

Total 199.760 16  

The degrees of freedom for the Between (BET) and Within (W) groups are d f BET = 3 and d f W = 13, respectively. The calculated F statistic is approximately 0.577.

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Answer:

Naturely, the direction of the heat flow is from zone of high temperature to zones of low temperature. Hence, the direction of heat flow is from the sample of unknown metal and surrounding water until thermal equilibrium in the water-sample system is reached.

Explanation:

Naturely, the direction of the heat flow is from zone of high temperature to zones of low temperature. Hence, the direction of heat flow is from the sample of unknown metal and surrounding water until thermal equilibrium in the water-sample system is reached.

Answer:

c. lakes freeze from the botton up

Answer:

3.34x10¹⁶ molecules of aspirin are in a drop of blood

Explanation:

The recomended dose of aspirin in blood is 100.0μg/mL =

1x10⁻⁴g aspirin / mL of blood.

In a drop (0.100mL) there are:

0.100mL ₓ (1x10⁻⁴g aspirin / mL of blood) = 1x10⁻⁵g aspirin.

Molecular mass of aspirin is:

9C = 12.01g/mol ₓ 9 = 108.09g/mol

8H = 1.01g/mol ₓ 8 = 8.08g/mol

4O = 16g/mol ₓ 4 = 64g/mol

108.09 + 8.08 + 64 = 180.17g/mol

Thus, moles of aspirin in 1x10⁻⁵g are:

1x10⁻⁵g ₓ (1mol / 180.17g) = 5.55x10⁻⁸ moles of aspirin

In 1 mole, you have 6.022x10²³ molecules, thus:

5.55x10⁻⁸ moles of aspirin ₓ (6.022x10²³ molecules / 1 mole ) =

Answer:

about 0.7 g/mL

Explanation:

Density = mass ÷ volume

D = 5.29 g / (12.6 mL - 5.00 mL)

D = 5.29 g / 7.6 mL

D = 0.696052.... g/mL

D = about 0.7 g/mL

The solid is more soluble at higher temperatures is probably true for a solid solute with a highly endothermic heat ofsolution when dissolved in water. The correct option to this question is D.

The solubility of most solid or liquid solutes increases with increasing temperature. The components of mixtures can often be separated by fractional crystallization. It separates compounds according to their solubility.

When water is heated, the molecules gain energy and move faster. Because they move faster, they come into contact with sugar more often and dissolve faster.

As the temperature increases, the kinetic energy of the solvent particles increases, effectively breaking them apart. Dissolved particles are effectively held between solvent molecules, increasing solubility.

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The substance that has a coefficient of 2 when the balanced equation for the redox reaction given is written is NO.

The correct option is C.

A balanced chemical equation is one in which the total number of moles of atoms produced by a reaction equals the sum of the moles of atoms produced in each reaction.

The law of conservation of mass, which stipulates that matter cannot be generated or destroyed, is in conformity with a balanced chemical equation.

Numerical coefficients are added in front of the moles of atoms of an element or the moles of a particular molecule participating in the reaction while balancing chemical equations.

The balanced chemical equation of the given reaction between copper and trioxonitrate (v) acid to produce copper nitrate, nitrogen (ii) oxide, and water is given below:

3 Cu (s) + 8 HNO₃ (aq) → 3 Cu(NO₃)₂ (aq) + 2 NO (g) + 4 H₂O (l)

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Answer:

m=28.8g

Explanation:

m=dv

m=24*1.2

m=28.8g

Answer:

boron

Explanation:

Boron and aluminum lie in same group in modern periodic table and both have three valence electrons