inside a wave describe the motion of water particles as the wave particles as the wave passes through​

The Bohr equation for energy levels of the hydrogen atom can be used to calculate the wavelength of a spectral line, to ionize hydrogen atom and to find the energy exchange of the electrons revolving between two levels.

What is Bohr's atomic theory?

In 1913,  Neil Bohr presented his atomic theory called 'Bohr's atomic theory'. It was the first model that described the atomic hydrogen spectrum accurately along with wavelength.

Moreover, the theory indicates that the electron move in fixed circular orbits around the nucleus in an atom and there are no chances of electron finding in between the shells. The formula for Bohr's atomic model is l = nh/2π

To put it simply, in an atom, each orbit has its own specific energy and are commonly called energy levels or energy shells.

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Answer: this ones old do you still need help on this one?

Explanation:

a) Melting: An example of melting that occurs in our everyday life is when we heat butter on a stovetop.

b) Freezing: Freezing is the process in which a liquid transforms into a solid upon cooling.

c) Condensation: One example of condensation that we encounter regularly is when water droplets form on the surface of a cold drink on a hot day.

d) Evaporation: Evaporation is the process by which a liquid transforms into a gas or vapor.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state.

a) Melting:  Butter is a solid at room temperature, but when heat is applied, it melts into a liquid. This change is a result of the increase in temperature, which provides enough energy to overcome the intermolecular forces holding the butter molecules together.

b) Freezing:Eventually, the temperature reaches the freezing point of water (0°C or 32°F), at which the water molecules slow down and arrange themselves into a regular, crystalline structure. This transformation from a liquid to a solid state is accompanied by the release of heat energy.

c) Condensation: As the temperature decreases, the air's capacity to hold moisture decreases, causing the water vapor in the air to condense into liquid water droplets. This process occurs due to the transfer of heat energy from the warm air to the cold surface, leading to the saturation of the air and the conversion of water vapor into liquid form.

d) Evaporation:  As the sun's heat energy is absorbed by the water molecules on the clothes' surface, their kinetic energy increases, causing them to break free from the liquid phase and escape into the surrounding air as water vapor. This process occurs because the molecules at the liquid surface with sufficient energy can overcome the attractive forces within the liquid and enter the gas phase.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state. An example of sublimation is the process of dry ice (solid carbon dioxide) converting into carbon dioxide gas.

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Answer: A biome is part of the biosphere. Biomes can influence each other. terrestrial biomes

Explanation:

Functional group can be interconverted into each ther by the means of suitable reagent. Functional group are responsible for the chemical and physical properties of a compound.

A group of atoms forming a component of a molecule that accounts for a particular function or chemical behavior is called a functional group. There are so many functional group in organic chemistry.

a. A skeletal chain goes up, down, up, down to C double bonded to O, up to O H is Carboxylic group COOH.

b. A skeletal chain goes up to O, down, up, down, up. A hexagonal ring is single bonded to C l on one corner. this belongs to cyclic substituted compound.

c. N has a pair of electron dots above, and is single bonded to R Superscript 1, wedge bonded to H, and wavy bonded to H. This belongs to primary amine compound.

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Answer:

The sign of change of heat of solution is positive

Explanation:

The dissolution of AgNO3 in water is represented by the equation;

AgNO3(s) --------> Ag^+(aq) + NO3^-(aq)

We can see from the question that as the temperature was increased from 10° to 20°C the solubility of the solute increased from  170g to 222g per 100g of H2O.

This implies that the solubility of the solute increases with increase in temperature.

If a reaction moves in the forward direction when the temperature is increased, then the reaction is endothermic. If the reaction is endothermic, the sign of change of heat of solution is positive.

Given that the reaction A — → Products is second-order with respect to A. We need to determine the true statements among the given statements. When [A] doubles, the rate quadruples. This is true because the rate of a second-order reaction varies directly as the square of the concentration of the reactant. The correct options are options (A) and (B).

Therefore, when the concentration of A doubles, the rate of the reaction will be four times. The plot of [A]2 versus time gives a straight line with slope +k. This statement is true. The slope of the plot of [A]2 versus time gives a straight line with slope +k. This is because the rate constant is

k = slope/intercept.

A plot of [A] versus time gives a straight line with slope – k.

This statement is not true.

The plot of [A] versus time gives a straight line with slope –k.

This is because the rate constant is

k = -slope/intercept.

A plot of [A]– versus time gives a straight line with slope +k.

This statement is not true because the reaction is second-order with respect to A, not first-order with respect to A.

The plot of [A]– versus time gives a straight line with slope -k.

None of the statements above are true.

This statement is not true as the first and the second statement is correct, hence option (E) is incorrect.

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NaNO3 has a solubility of 80 grams per 100 grams of water at 10oC. (It seems to be somewhat less than 80 grams, but after rounded off, it's practically 80 grams.)

• Assume we just required 60 mL of NaNO3 solution at 10oC. Further Information: Because the solubility of solids rises with temperature, solutes whose curves go higher with increasing temperature are often solids.

Thus the solution in issue is saturated, or even somewhat supersaturated — but you're probably correct.

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During this process, the hexanes in the flask will boil and turn into vapour at their boiling point of 68.73 °C (342 °K). This occurs because the heat being applied to the flask causes the temperature of the hexanes to increase, and when it reaches the boiling point, the liquid will begin to turn into a gas.

The vapour will then rise and escape from the flask. As the vapour exits the flask, it will cool and eventually condense back into a liquid. This process is known as "boiling."

Hexanes in the flask will boil and turn into vapour because of the heat being applied. Vapor rises and escapes from the flask, then condenses back into liquid. This is a boiling process.

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Answer:

aluminum will lose 3 electrons.

Explanation:

to be stable and losing 3 is easier than gaining 5.

anddd its a metal. :)

Metals are ductile because the forces that hold their atoms together are metallic bonding.

Metallic bonding is a unique type of chemical bonding that occurs between metal atoms in a metal lattice. In metallic bonding, the valence electrons of metal atoms are delocalized and move freely throughout the lattice. This creates a "sea" of electrons that is shared by all the metal atoms. The positive metal ions are surrounded by this cloud of delocalized electrons, which hold the lattice together.

The strength of metallic bonding arises from the electrostatic attraction between the positively charged metal ions and the negatively charged delocalized electrons. This bonding is relatively weak, allowing the metal ions to slide past each other without breaking the lattice structure.

This unique bonding characteristic of metals enables them to exhibit properties such as ductility. When a force is applied to a metal, the layers of metal ions can easily slide past each other due to the mobility of the delocalized electrons. This sliding motion allows the metal to be shaped into wires or other elongated forms without breaking.

In conclusion, the presence of metallic bonding in metals and the ability of the metal ions to slide past each other due to the mobility of delocalized electrons are the primary factors that contribute to the ductility of metals.

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Answer:

665

Explanatio

Answer:

$665

Explanation:

5 hours per week × $7 per hour = $35 per week

$35 per week × 19 weeks = $665

ANSWER

EXPLANATION

Firstly, we need to define the word titration.

Titration is defined as a technique that is used to determine the known concentration of an unknown solution.

This normally occurs between an acid and a base

During titration, an indicator changes color when equilibrium has been attained between the two solutions. The solutions are normally acid and base. At equilibrium, the number of moles of acid is equal to the number of base.

Therefore, the correct answer is option C

Excess lithium hydroxide is added to solution and this will lead to crystallization of lithium sulfate which is separated from the solution using filtration techniques.

The reaction that occurred between the sulfuric acid and lithium hydroxide is known as a neutralisation reaction.

The products of this reaction is a salt called lithium sulfate and water.

Upon the addition of excess base (lithium hydroxide) the solution becomes super saturated leading to crystallization of salt from the solution.

The mixture is then filtered using a filtration funnel through gravity filtration process.

The hydrated lithium sulfate is then collected as the residue and dried.

Therefore, excess lithium hydroxide is added to solution and this will lead to crystallization of lithium sulfate which is separated from the solution using filtration techniques.

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Answer:

no

Explanation:

because the characters are invalid

Answer:

no

Explanation:

because they are not valid

Answer:

Reaction time tests can be used to assess an individual's hand-eye coordination. One test involves catching a 1 metre ruler and measuring the distance, d in metres, that the ruler travelled before being caught. The reaction time t seconds is then calculated using the formula: = √2d/9.8

0.05104 kcal/g is the calorific value of potato chips

Let the calorific value of potato be H cal/g

so, the heat of potato chips is 2.5g × H =2.5H

The specific heat of water is 1 cal g⁻1 °C⁻¹

The heat of water = 31.9 g × 1 cal g⁻1 °C⁻¹ ( 21.3-17.3)°C

                              = 31.9 × 4 cal

                              = 127.6 cal

hence, 2.5H = 127.6 cal

H = 127.6/2.5 = 51.4 cal/g = 0.05104 kcal/g

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An Arrhenius base is a molecule that when dissolved in water will break down to yield an \(OH^-\)or hydroxide ion in solution.

An Arrhenius base is a compound that increases the \(OH^-\) ion concentration in aqueous solution.

An Arrhenius base is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or , \(OH^-\) ions in the solution.

Bases Properties

Arrhenius bases that are soluble in water can conduct electricity.

Bases often have a bitter taste and are found in foods less frequently than acids. Many bases, like soaps, are slippery to the touch.

Bases also change the colour of indicators. Red litmus turns blue in the presence of a base (see figure below), while phenolphthalein turns pink.

Some bases react with metals to produce hydrogen gas.

Acids (pH < 7.0) react with bases (pH > 7.0) to produce a salt and water. When equal moles of an acid and a base are combined, the acid is neutralized by the base. The resulting mixture will have a more neutral pH.

An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons. In other words, it increases the number of \(H^+\) ions in the water. In contrast, an Arrhenius base dissociates in water to form hydroxide ions \(OH^-\).

Example, sodium hydroxide, is added to an aqueous solution. NaOH dissociates into sodium, \(Na^+\), and hydroxide, \(OH^-\) ions.

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A kinase adds a phosphate group to a target enzyme, altering the catalytic efficiency of the enzyme, this is an example of covalent modification.

Although there are many different kinds of covalent modifications, phosphorylation is one popular kind. Protein kinases are in charge of accelerating the transfer of an ATP terminal phosphoryl group onto a residue that contains a hydroxyl group (serine, threonine or tyrosine).

Acetylation/deacytilation, phosphorylation/dephosphorilation, myristoylation, ADP ribosylation, farnesylation, sulfation, and ubiquitination are examples of covalent modification strategies. Yet, the most frequent instances are phosphorylation and acytilation.

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The statement "Alexander Fleming discovered the antimicrobial properties of penicillium notatum" is true.

Alexander Fleming, a Scottish bacteriologist, is credited with the discovery of the antimicrobial properties of Penicillium notatum, a type of mold. In 1928, while working at St. Mary's Hospital in London, Fleming observed that a mold contaminant had inhibited the growth of bacteria in a petri dish.

He identified the mold as Penicillium notatum and named the substance it produced as penicillin. Fleming's discovery of penicillin marked a significant milestone in the field of medicine, as it paved the way for the development of antibiotics.

Penicillin revolutionized the treatment of bacterial infections and saved countless lives. Fleming's work earned him the Nobel Prize in Physiology or Medicine in 1945.

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Complete question :

Alexander Fleming discovered the antimicrobial properties of penicillium notatum. T/F                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

The value for k if the equilibrium pressures for hydrogen, oxygen, and water are 1, 0.5, and 1 atm, respectively are mentioned below.

What is equilibrium ?

A condition of balance can be either static (as in the case of a body acting on by forces whose resultant is zero) or dynamic (as in the case of a reversible chemical reaction when the velocities in both directions are equal). This equilibrium can be either intellectual or emotional.

What is pressure?

The pressure is nothing but the vital force applied to the object or particle. Pressure calculates how much force will be gone or extended to the object. Pressure is the force that is perpendicular to the power of extension. The standard unit of pressure is the pascal (pa).The formula for pressure, p= F/ Ap= pressure, F= magnitude, A= area of the surface pressure is the scalar quantity. Pressure is also expressed in the term atmospheric pressure, atm.

2H₂(g)+ O₂(g)⇒ 2H₂O(g)

As we know, formula for K is as follows:

Kp= (PH₂O)²/ (PH₂)²*PO₂

Here, we have

pH2O = 1 atm

pH2 = 1 atm

pO2 = 0.5 atm

Putting these values in the equation, we get

Kp = 2atm⁻¹

Now, we can convert it into Kc as follows:

Kp = Kc(RT)Δn

Where, change in moles of gases, ∆n = 2-3 = -1

Temperature, T = 25°C = 298 K

R = 0.082 atm•L/mol-K

So,

Kp = Kc(RT)Δn

2= Kc (0.082* 298)⁻¹

2= Kc*0.041

Kc= 0.041/2

Kc= 48.87

Therefore, the value for k if the equilibrium pressures for hydrogen, oxygen, and water are 1, 0.5, and 1 atm, respectively are mentioned above.

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The formula of the hydride formed by boron is BH3, and the formula of the hydride formed by tellurium is TeH4.

Boron hydride, also known as borane, is a chemical compound made up of boron and hydrogen. The compound consists of boron's monatomic form and hydrogen. Borane is an incredibly potent reducing agent that is essential in organic and inorganic synthesis.

Boron hydride is a significant synthetic chemical in its own right, but it has very few industrial applications. Because of its high reactivity and reduced stability, it is a challenging material to deal with. Due to its potential to ignite, boron hydride has military applications as rocket propellant.

Boron hydride can have different structures. The simplest, or parent, borane structure consists of three hydrogen atoms linked directly to a boron atom. Its chemical structure is triangular, with each vertex occupied by hydrogen atoms.

Tellurium Hydride

Tellurium hydride is a chemical compound made up of tellurium and hydrogen with a molecular formula of TeH4. It is a colourless gas that is flammable and poisonous. It is produced in the same way as other covalent hydrides, by direct combination of the elements in the presence of a catalyst.

It's worth noting that TeH4 has a structure similar to that of methane. The main difference is that one of the hydrogen atoms in the methane molecule has been replaced by a tellurium atom. There are four hydrogen atoms bound to the central tellurium atom, resulting in the molecular formula TeH4.

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Answer: The percent yield of zinc carbonate is 5.91 %

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)

 \(\text{Moles of} ZnCO_3=\frac{12.6 g}{125.4g/mol}=0.100moles\)

\(ZnI_2\) is the limiting reagent as it limits the formation of product and \(Na_2CO_3\) is the excess reagent.  

\(Na_2CO_3+ZnI_2\rightarrow 2NaI+ZnCO_3\)  

According to stoichiometry :

1 mole of produce =  1 mole of

Thus 1.7 moles of \(ZnI_2\) will produce=\(\frac{1}{1}\times 1.7=1.7moles\)  of \(ZnCO_3\)

Theoretical yield of \(ZnCO_3=moles\times {\text {Molar mass}}=1.7moles\times 125.4g/mol=213.2g\)

percentage yield = \(\frac{\text {Experimental yield}}{\text {Theoretical yield}}\times 100=\frac{12.6g}{213.2g}\times 100=5.91\%\)

Answer:

the other person was right EXCEPT it says in 2 significant numbers so the answer is 5.9

Explanation:

i hope this helps. have a wonderful day :))

Answer:

=0.15M

Explanation:

To get the moles of the unknown LiOH, calculate the number of moles of HCl in 12.3mL.

Using the stoichiometric coefficient, mole ratio 1:1.

This means that the number of moles is the same. This number of moles is contained in 18mL. Then Calculate the molarity (concentration) which is in 1000mL

See the explanation from the image I have shared with you for calculations.

Answer:

B

Explanation:

The statements that describe the formation of condensation on the can are

B) As water molecules in the air come in contact with the cold can, they will slow down.

C) As water molecules in the warm air collide with the cold can, they will lose energy and become colder.

E) Condensation on the can comes from water vapor in the air cooling and slowing and becoming liquid on the outside of the can.

Condensation is the process of converting water vapor into liquid. The process happens when the temperature lowers and the vapor in the air condenses and converts into water molecules.

Here, the condensation occurs near the cold can, the surrounding air condenses, lowered the energy and converts it into water molecules.

Thus, the correct options are B, C, and E.

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Explanation:    The relocation of organisms across geographical boundaries occurs naturally by various means. Since humans began exploring the globe, however, the rate of new species being introduced into regions has greatly increased. In some cases, humans have dispersed species on purpose; for instance, many plants were transported from Europe to North America for agricultural and ornamental purposes. Others were transported accidentally by ship, train, airplane - even on the shoes of hikers.

     Some species may be introduced and not be able to survive in their new habitat. Others may find optimal conditions for growing, reproducing, and adapting to the new environment, and their populations soar. For instance, lack of predators may contribute to their rapid population increases.

Answer:

a

Explanation:

it is a because the soil drives in the cold of January

Answer:

305.88 g

Explanation:

4 Al + 3 O₂ → 2 Al₂O₃

First, we convert 6 moles of aluminum (Al) into moles of aluminum oxide (Al₂O₃), using the stoichiometric coefficients:

6 mol Al * \(\frac{2molAl_2O_3}{4molAl}\) = 3 mol Al₂O₃

Finally we convert 3 moles of aluminum oxide into grams, using its molar mass:

3 mol Al₂O₃ * 101.96 g/mol = 305.88 g