I am named after the Russian scientist who organized the periodic table by atomic mass. Who am I?

In both active and closed mines, the reaction of rainwater with iron sulfide components in the rubble converts to sulfuric acid which creates acid mine drainage.

This is a highly acidic solution that can have severe impacts on water quality and aquatic life.

Acid mine drainage can also cause damage to infrastructure and ecosystems downstream, as well as pose risks to human health.

To mitigate the effects of acid mine drainage, various treatment methods can be employed, including neutralization with alkaline substances, chemical precipitation, and biological remediation.

Prevention measures, such as the use of best management practices during mining operations and the implementation of proper mine closure procedures, can also help to minimize the production and release of acid mine drainage.

To know more about sulfide. please visit.....

brainly.com/question/12594350

#SPJ11

The temperature of the sample is approximately 85.641 K.

To solve this problem, we can use the ideal gas law equation:

PV = nRT.
Given:
n (number of moles) = 8.05 moles
P (pressure) = 2.06 atm
V (volume) = 27.83 L
We need to find the temperature (T).
R is the ideal gas constant, which is a known value. It is usually given as 0.0821 L·atm/(mol·K).
Let's plug in the values into the equation and solve for T:
PV = nRT
(2.06 atm)(27.83 L) = (8.05 mol)(0.0821 L·atm/(mol·K))(T)
Simplifying the equation:
56.84498 = 0.6647055T
Divide both sides by 0.6647055:
T = 56.84498 / 0.6647055
T ≈ 85.641 K
Therefore, the temperature of the sample is approximately 85.641 K.

Learn more about temperature in the link:

https://brainly.com/question/27944554

#SPJ11

a) The Lennard-Jones potential predicts the separation r_eq at the minimum energy U_min.

b) The U_min for this interaction at T=298 K is the value obtained from the Lennard-Jones potential equation when r=r_eq.

c) The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the attractive part (-A/r^6) to the total potential energy U_min.

d) The ratio of r_eq to r_0, where u(r_0)=0.4, can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.

e) The ratio of r_s to r_0, where r_s is the separation where the magnitude of the attractive adhesion force is maximum, can be determined by finding the value of r where the derivative of the potential energy with respect to r is equal to zero.

f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the potential energy equation with respect to r and evaluating it at r=r_s.

a) The Lennard-Jones potential provides information about the relationship between energy and separation between two interacting atoms.

At the minimum energy (U_min), the potential predicts the separation r_eq, which corresponds to the equilibrium distance between the atoms. This is the distance at which the energy of the system is at its lowest point.

b) To determine the value of U_min at a given temperature (T=298 K), you can substitute the equilibrium separation r_eq into the Lennard-Jones potential equation and calculate the resulting energy value.

This will give you the U_min for the interaction.

c) The Lennard-Jones potential consists of two components: an attractive component (-A/r^6) and a repulsive component (B/r^12).

The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the magnitude of the attractive component to the total potential energy at the equilibrium separation.

This ratio provides insights into the relative contribution of the attractive force to the overall potential energy at equilibrium.

d) The ratio of r_eq to r_0 can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.

In other words, you need to solve the Lennard-Jones potential equation for r_eq when the potential energy is equal to 0.4 times the potential energy at r=r_0.

e) The ratio of r_s to r_0 is obtained by finding the value of r where the magnitude of the attractive adhesion force is maximum.

This can be determined by finding the separation r where the derivative of the potential energy equation with respect to r is equal to zero.

The value of r_s represents the separation at which the attractive force between the atoms is strongest.

f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the Lennard-Jones potential energy equation with respect to r and evaluating it at r=r_s.

This will give you the magnitude of the maximum attractive adhesion force between the atoms.

To know more about "Lennard-Jones potential" refer here:

https://brainly.com/question/32318368#

#SPJ11

Answer:

D

Explanation:

The greater the distance apart, the lesser the gravitational force between the objects

Answer:

two objects positioned 1 mile apart because we know that the gravitational force is inversely proportional to the distance

formula

F=\(\frac{Gm1m2}{d^2}\) so as the distance increases the gravitational force will also decrease but the objects will not stick to each other because of the value of gravitational constant that is 6.673×10^-11

Explanation:

i hope it will help you

The volume of the gas sample will be 1.79 L.

A liquid, solid, or gas's volume represents the amount of three-dimensional space it occupies. Although there are many additional units that can be used to indicate volume, the most used ones are liters, cubic meters, gallons, milliliters, teaspoons, as well as ounces.

Given data :

Mass of \(O_{2}\) = 1.20 g

Mass of \(N_{2}\) = 1.43 g

Number of moles can be calculated by suing the formula:

Number of moles of \(O_{2}\) = Mass / molar mass = 1.20 / 32 = 0.03 mol

Number of moles of \(N_{2}\) =  Mass / molar mass  = 1.43 / 28 = 0.05 mol

So, the total count of moles can be calculated by :

Total moles = moles of \(O_{2}\)  +  moles of \(N_{2}\)

Total moles = 0.03  + 0.05 = 0.08 mol

The volume of the gas at STP can be calculated as:

Volume = 0.08 mol × 22.4 mol/L

Volume = 1.79 L

Therefore, the volume of the gas sample will be 1.79 L.

To know more about volume

https://brainly.com/question/12357202

#SPJ4

Explanation:

A mixture of 5.0 grams of h2 and 5.0 grams of o2 has a total pressure of 2.50 atm

The partial pressure of the hydrogen is 2.35 atm.

Mass of \($\mathrm{H}_2$\) gas \($=5.00 \mathrm{~g}$\)

Mass of \($\mathrm{O}_2$\) gas \($=5.00 \mathrm{~g}$\)

molar mass of \($\mathrm{H} 2=2.0 \mathrm{~g} /$\)mole

molar mass of \($\mathrm{O} 2=32.0 \mathrm{~g} / \mathrm{mole}$\)

Calculate mole of \($\mathrm{H}_2$\)and mole of \($\mathrm{O}_2$\)

\($$\begin{gathered}n_{H_2}=\frac{\text { mass of } \mathrm{H}_2}{\text { molar mass of } \mathrm{H}_2}=\frac{5.0 \mathrm{~g}}{2.0 \frac{\mathrm{g}}{\mathrm{mole}}}=2.5 \text { mole } \\n_{\mathrm{O}_2}=\frac{\text { mass of } \mathrm{O}_2}{\text { molar mass of } \mathrm{O}_2}=\frac{5.0 \mathrm{~g}}{32.0 \frac{\mathrm{g}}{\text { mole }}}=0.156 \text { mole }\end{gathered}$$\)

Calculate partial pressure of \($\mathrm{H}_2$\) as following

\($$\begin{gathered}\boldsymbol{P}_{\mathrm{H}_2}=\frac{n_{\mathrm{H}_2}}{n_{\mathrm{H}_2}+n_{\mathrm{O}_2}} \times \boldsymbol{P}_{\text {total }} \\\boldsymbol{P}_{\mathrm{H}_2}=\frac{2.5}{2.5+0.156} \times \mathbf{2 . 5} \mathbf{~ a t m}=\mathbf{2 . 3 5 \mathbf { a t m }}\end{gathered}$$\)

The pressure that a single gas exerts inside a mixture is referred to as partial pressure. All of the partial pressures in a mixture add up to the overall pressure of a gas. A gas's individual pressure inside a gas mixture is known as partial pressure. When there is a combination of two or more gases in a given volume, the pressure created by each individual gas in the mixture is expressed using the phrase partial pressure.

To learn more about partial pressure visit:https://brainly.com/question/13199169

#SPJ4

Answer:

The body stores lipids ingested as fat and uses this energy when needed-chemical energy

A person's hat falls off and lands on the ground- gravitational energy

A wave of water pushes a surfer to shore- mechanical energy

A burner on a stove heats up a tea kettle- thermal energy

A power plant splits atoms to generate power for a city- nuclear energy

A nerve sends an impulse to another nerve- electrical energy

A plant absorbs the Sun's rays to start the process of photosynthesis- radiant energy

Explanation:

Gravitational energy is energy stored by an object as a consequence of its height.

Mechanical energy is the energy that is possessed by an object due to its motion or due to its position.

Chemical energy refers to energy stored in chemical bonds in a substance.

Thermal energy is a form of energy that exists due to temperature difference between two bodies.

Nuclear energy refers to energy stored in the nucleus of an atom.

Electrical energy is a form of energy resulting from the flow of electric charge.

Radiant energy refers to energy that moves through vacuum without passing through a material medium.

The melting point of silicon dioxide SiO₂ is higher than the other given compounds because,  It consists of a strong covalent network and the bond between Si-O is strong.

Melting point of a substance is the temperature at which it converts from its  solid state to liquid state where the solid phase and liquid phase are in equilibrium.

Melting point of the substance depends on bond type, molar mass, temperature, pressure and presence of impurities. It increases with increase in the strength of intermolecular bonds.

The more the bond strength more energy needed to apply to weaken the bonds and melt the compound. Among the given compounds, silicon dioxide is having stronger covalent bonds. Hence, option A is correct.

Find more on melting point:

https://brainly.com/question/29578567

#SPJ1

\(\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the Concept of the Acceleration.

a = V2-V1/t

so the correct answer is, a = ∆v/t

option C.) is correct, a = ∆v/t

Answer:

m = y2-y1 / x2-x1

Explanation:

The concept of molar mass of substance help us to determine the required mass of Magnesium, Mg in grams. The weight of Mg reacted in the reaction is equals to the 4.82 grams.

We have the following chemical reaction,

2Mg + O₂ → 2MgO

The atomic masses of magnesium atom, Mg and oxygen atom O are 24.3 g/mol and 16 g/mol respectively. So, the molar mass of MgO substance = 24.3 + 16

= 40.3g/mol

Mass of MgO, m = 8.0 g

Molar mass of substance is defined as the grams per mol that is mass of substance divided by moles of substance, M = mass in g/no. of moles

=> Molar mass of MgO = mass in g/no. of moles

=> moles of MgO = mass/molar mass

= 8g/40.30g/mol = 0.1985 moles MgO produced. According to reaction, 2 mole MgO is produced by 2 mole of Mg. That's 0.1985 mole of MgO will be produced by

= (2/2)× 0.1985

= 0.1985 moles Mg

Mass of Mg = moles×molar mass

= 0.1985× 24.3 = 4.82 g

Hence, required mass is 4.82 g.

For more information about Molar mass, visit:

https://brainly.com/question/837939

#SPJ4

Answer: 3 elements

Explanation:

They are

K for Potassium, C for Calcium and O for Oxygen

In lactic acid fermentation, glucose is converted into lactic acid by the enzyme lactate dehydrogenase. This process takes place in the absence of oxygen, making it anaerobic fermentation.

Lactic acid fermentation occurs in muscle cells during intense exercise, when oxygen is not readily available. The lactic acid produced in this process can cause muscle fatigue and soreness.

Fermentation is a metabolic process that converts sugars, such as glucose, into energy without the use of oxygen. One type of fermentation is lactic acid fermentation, which occurs in both plants and animals.

The main purpose of lactic acid fermentation is to generate energy for the cell. This process is also used in the production of fermented foods and beverages, such as yogurt, cheese, and pickles. The acidity of these products is due to the lactic acid produced during fermentation.

To know more about fermentation refer here:

https://brainly.com/question/13050729#

#SPJ11

When a hydrogen atom's electron is excited to the n=4 level and then loses energy, it can emit multiple wavelengths of light. To determine the number of different wavelengths, we need to consider the possible transitions between energy levels.

In the case of the n=4 level, the electron can transition to the n=3, n=2, or n=1 levels. Each of these transitions corresponds to a different energy difference and, therefore, a different wavelength of light.

The formula to calculate the wavelength of light emitted is given by the Rydberg formula:
\(\frac{1}{λ} = R * (\frac{1}{n_f^2} -\frac{1}{n_i^2})\)
where λ is the wavelength, R is the Rydberg constant, and \(n_f\) and \(n_i\) are the final and initial energy levels, respectively.

To find the number of different wavelengths, we can substitute the values of \(n_f =\) 3, 2, and 1 into the formula. By calculating the wavelength for each transition, we can determine how many different wavelengths of light can be emitted as the excited atom loses energy. The Rydberg formula applies specifically to hydrogen atoms. The actual values of the wavelengths will depend on the specific energy levels and the corresponding Rydberg constant.

To know more about electron visit:

https://brainly.com/question/12001116

#SPJ11

The following substances can behave as Bronsted-Lowry acids in aqueous solution: HNO₃ and  NH₄+

The correct answer is a and b.

The Bronsted-Lowry acid theory is a chemical theory that explains acids and bases and their reactions. It defines acids as proton donors and bases as proton acceptors.

According to the definition provided by Bronsted–Lowry, an acid is a proton (H+) donor, while a base is a proton acceptor. At the point when a Brønsted-Lowry corrosive loses a proton, a form base is shaped. Similarly, a conjugate acid is produced when a Bronsted–Lowry base acquires a proton.

Learn more about Bronsted-Lowry acids:

brainly.com/question/30460067

#SPJ11

Answer:

Concept of chemi-fluorescence

Explanation:

A glow stick usually consists of two chemicals in a larger plastic tube: , a base catalyst (mostly sodium salicylate), and a suitable dye (sensitizer, or fluorophor). This creates an exergonic reaction when mixed together.

When a glow stick is bent, the flurophor which is a chemical that easily re-emits light upon excitation in smaller capsules is released into the other substance, there by causing it to emit radiation/light in the uv-visible region. The brightness and longevity of the glow stick is determined by varying the concentration of these chemicals.

I hope this explanation clarifies things.

Answer:

0.0976 L (3 s.f.)

Explanation:

To find the final volume of the gas, use the combined gas law.

\(\boxed{\sf \dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}}\)

where:

STP stands for Standard Temperature and Pressure.

The standard temperature is 273.15 K, and the standard pressure is 1 atm.

Therefore, the values to substitute into the formula are:

Rearrange the formula to isolate V₂:

\(\implies \sf V_2=\dfrac{P_1V_1T_2}{T_1P_2}\)

Substitute the values into the formula and solve for V₂:

\(\implies \sf V_2=\dfrac{1 \cdot 0.225 \cdot 320}{273.15 \cdot 2.7}\)

\(\implies \sf V_2=\dfrac{72}{737.505}\)

\(\implies \sf V_2=0.0976264567...\)

\(\implies \sf V_2=0.0976\;L\;(3\;s.f.)\)

Therefore, the volume of the gas at the new pressure and temperature will be 0.0976 L (3 s.f.)

Answer:

Gavin magnus

Explanation:

I don't really care tho

In an electromagnetic spectrum, bright red light would produce  photoelectric effect on a strip of metal.

The electromagnetic spectrum is made up of waves that convey radiant electromagnetic energy and are comprised of electromagnetic fields. These waves may propagate over space. The electromagnetic waves that make up radiation are coordinated oscillations of the electric and magnetic fields. They develop as a result of periodic shift in both the electric and magnetic fields.

All electromagnetic waves in a vacuum move at the same speed, which is equal to the speed of air. The frequency or wavelength of a radio wave determines where it is located in the electromagnetic spectrum. They are produced when electrically charged particles accelerate and communicate with other charged particles.

Option C is the correct answer.

Learn more about Electromagnetic Spectrum here:

https://brainly.com/question/23727978

#SPJ4

Answer:bright red light

Explanation:

ed c

Answer:

7.6x10^-8

Explanation:

Answer:

Properties of metals

•high melting points.

•good conductors of electricity.

•good conductors of heat.

•high density.

•malleable.

•ductile.

Explanation:

I hope it's help

mark as brainliest answer

thanks me later

don't forget to follow me

I'm beginner plss support me

stay safe and healthy

Answer:

When a strong base reacts with a strong acid, a neutral salt is formed. When a strong base reacts with a weak acid, a basic salt is formed. When a strong acid reacts with a weak base, an acidic salt is formed.

Explanation:

For the plant, it can be too hot or too cold. Water is not required by the plant. Carbon dioxide is not necessary for the plant. In order to photosynthesize their food, plants first utilize CO2, but they also use oxygen.

What is photosynthesis?

The plant can produce its own sugar and has access to sunlight. The plant can produce its own sugar and has access to sunlight. But the plant is starting to wither. The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis. Once they have carbon dioxide and water, they can use solar energy to create food. Another gas called oxygen is a byproduct of the production of plant nourishment. The leaves emit this oxygen into the atmosphere.

To learn more about atmosphere from given link

brainly.com/question/26767532

#SPJ4

Answer:

78 kPa

Explanation:

The total pressure is the sum of the partial pressures:

240 = Pa + Pb + Pc

240 = 107 + 55 + Pc

Pc = 78 kPa

Answer:

78 kPa

Explanation:

Answer:

is there a way of reducing light pollution at the edges of a forest work?

The type of chemical reaction from the problem given " Ca(OH)₂+CaSO4+Al(OH)₃ " is a redox reaction.

It is a redox reaction simply because it contains species which undergoes oxidation and the other species which undergoes the reduction process. It is on this premise that we say that the reaction from the task given above is an oxidation and reduction reaction.

In conclusion, we can now deduce from the explanation given above that the substance which undergoes oxidation is a reducing agent while the species which undergo reduction is an oxidizing agent.

Read more on redox reactions;

https://brainly.com/question/21851295

#SPJ1