How can you contribute at your own level to save the environment? Plz say the anwer

Answer:

1×10^-14 mol^2dm^-6

Explanation:

Ionic product is defined as the product of the concentrations of ions, each raised to the power specified by its stoichiometric coefficient in a solution. The product of concentrations of H+ and OH- ions in water at a particular temperature is known as ionic product of water. The value of Kw increases with the increase of temperature, i.e., the concentration of H+ and OH- ions increases with increase in temperature. The value of Kw at 25°C is 1 x 10-14.

At any given time, the amount of hydrogen ions and hydroxide ions present in water is extremely small and consequently the concentration of undissociated water molecules is almost unchanged by any minute ionization thus it is considered a constant. The product of the concentration of both hydrogen and hydroxide ions is a constant referred to as the ionic product for water.

Answer:

Explanation:

The ideal gas law is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of gas, R is the universal gas constant, and T is the temperature.

Rearranging the equation to solve for n, we get:

n = PV / RT

where:

P = 120 kPa

V = 32.4 L

R = 8.31 J/mol·K (universal gas constant)

T = 25°C + 273.15 = 298.15 K (temperature in kelvins)

Substituting the values:

n = (120 kPa * 32.4 L) / (8.31 J/mol·K * 298.15 K)

n = 1.34 mol (rounded to two significant figures)

Therefore, there are approximately 1.34 moles of He gas present in the given conditions.

So,

There's an equation that we could use in order to find frequency, and it is the next one:

This equation tells us that the energy of the photon is equal to the product of the Plank constant (h), which is 6.626*10^-34 J.s, and the frequency.

In this problem, we know the value of E and the value of h, so we need to solve for v:

Therefore, the correct answer option is A.

Answer:

Aight bud :3

Explanation:

:3

Answer:

See below

Explanation:

Specific heat is  'c'

Q = m c  T      where T i s change in temp

675  = 55 c (118-25)

c = .13196      kJ / kg-C       ...I do not know what units you want....

                              this is also .13196 J/gm-C      

Answer:

the tempeture increases

Explanation:

Zn(s) + CuSO4(aq) � ZnSO4(aq) + Cu(s) An important aspect of these experiments is that they are exothermic.

Answer:

1. Carbon

2. C

3.  Oceans

4. This is the hardest question so far :(

5. Most of every diamonds are colorless and clear, but are in a category of brown or pale yellow color that is called the normal color range.

6. has to be refraction.

Pls mark me brainly!

The ranking of the transitions from lowest to highest energy, wavelength, and frequency is;

From the Bohr model of the atom, we know that an electron in the hydrogen atom is able to absorb a photon move from a lower to a higher energy level. This is what we refer to as the excitation of the electron in the atom.

Now we also know that the spectrum of the hydrogen atom can be explained on the  basis of the fact that electrons are able to move from a lower to a higher energy level and vice versa, the energy of each of the transition is dependent on the difference between the transition.

Learn more about Bohr model:https://brainly.com/question/3964366

#SPJ1

Answer:

D) 100*C

Explanation:

Answer:

A. 0°C

Explanation:

El agua se evapora a los 0 grados

Answer:

There are mechanical energies. These consist of kinetic energy and gravitational potential energy.

Kinetic energy is the energy an object contains when it is in motion. Ex.: A car moving, a ball falling off of a building.

Gravitational potential energy is the potential for an object to do work at a certain height. If a 1 kg ball is placed 1 meter high, it has 9.8 Joules of potential energy, represented with the equation, Ug=mgh.

There are Non-Mechical Energies, which I assume you are trying to get. There is Thermal Energy, Electrical Energy, Light, Sound, Nuclear Energy, and Chemical Energy.

Thermal Energy is essentially heat. Friction causes thermal energy.

Electrical energy is potential difference. It is the work that can be done by a point charge.

Nuclear energy is like fission and fusion

Chemical energy is energy from chemical processses. Think, photosynthesis for example.

Sound is molecules hitting other molecules. It occurs a lot with friction as well.

Light is, well, you know what light is.

Explanation:

please let me know.. hope It helps you

please follow me for more information about anything

The longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography because the diffusion coefficient is much more larger in gas than the liquid.

Chromatography is a type of laboratory technique which is performed for the separation of the mixture of different elements into its components. The mixture firstly dissolved in a fluid solvent which is known as the mobile phase, that carries it through a system at which the material called the stationary phase is fixed.

Not all molecules present in the same solute show same behavior. Different molecules show different behaviour. This is due to mainly three reason which arr given as below:

The molecules of solute moves in different direction in the stationary phase, it is due to porosity of the particle that form it.

Thus, we concluded that the longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography because the diffusion coefficient is much more larger in gas than the liquid.

learn more about chromatography:

https://brainly.com/question/11960023

#SPJ4

The determination of the acetic acid concentration in a titration with sodium hydroxide (NaOH) will be affected if the volume of acetic acid used in the titration is changed from 5 mL to 15 mL.

In a titration, the volume of a solution of known concentration (the titrant) is added to a solution of unknown concentration (the analyte) until the reaction is complete. The concentration of the analyte can be determined by monitoring the volume of the titrant required to react with the analyte.

In the case of a titration of acetic acid (\(CH_{3}COOH\)) with sodium hydroxide (NaOH), the reaction between the two occurs as follows:

\(CH_{3}COOH+NAOH - > CH_{3}COONa + H_{2} O\)

The reaction is complete when the equivalence point is reached, which is the point at which all the acetic acid has reacted with the sodium hydroxide. At the equivalence point, the volume of sodium hydroxide required to react with the acetic acid can be used to determine the concentration of the acetic acid.

To learn more about acetic acid, visit:

https://brainly.com/question/15202177#

#SPJ11

In a Lewis structure, a terminal atom is an atom that is bonded to another atom or a molecule, and has no more available lone pairs or bonds. Based on this definition, the atom that is most likely to be terminal in a Lewis structure is hydrogen (B).

Helium (A) is a noble gas and does not readily form bonds in typical chemical reactions, so it would not be present in a Lewis structure as a terminal atom.

Carbon (C) is a central atom in many molecules and can form multiple bonds with other atoms, so it is unlikely to be a terminal atom in a Lewis structure.

Boron (D) is also capable of forming multiple bonds, and is often a central atom in molecules such as boron trifluoride (BF3), so it is not as likely to be a terminal atom in a Lewis structure as hydrogen.

Learn more about atom here:

https://brainly.com/question/29695801

#SPJ11

The solubility product of Calcium Carbonate is 15mg/l hence is insoluble in water and the water is under-saturated with respect to calcium.

Calcium Carbonate is only slightly soluble in water. The solubility product is 4.4 × 10⁻⁹, indicating that if equal concentrations of calcium and carbonate are formed only 6.8mg/l of calcium carbonate would be soluble. Thus determined by the data, the water saturation with respect to calcium is under-saturated.

Langelier Saturation Index Complex (LSI) is the indicator of the degree of saturation of calcium carbonate in water.  The under-saturated water effect is the result of the Langelier Saturation Index Complex(LSI) that is negative, hence states that there will be corrosion of pipings.

Learn more about Solubility here https://brainly.com/question/23946616

#SPJ4

The molar mass of the gas, given that 3.25 g of the gas occupied 2.56 L is 30.66g/mol

To obtain the molar mass of the gas, we shall first obtain the number of mole of the gas. This can be obtained as follow:

PV = nRT

0.95 × 2.56 = n × 0.0821 × 280

Divide both sides by (0.0821 × 280)

n = (0.95 × 2.56) / (0.0821 × 280)

n = 0.106 mole

Haven obtain the mole of the gas, we shall determine the molar mass of the gas as follow:

Molar mass = mass / mole

Molar mass of gas = 3.25 / 0.106

Molar mass of gas = 30.66g/mol

Thus, the molar mass of the gas is 30.66g/mol

Learn more about molar mass:

https://brainly.com/question/15874532

#SPJ1

The small, but important, energy differences between 3s, 3p, and 3d orbitals are due mainly to Heinsberg uncertainty principle

The s orbital always has a slightly lower energy than p orbital at the same energy level and so the s orbital always fill with electron before the corresponding p orbital do and the position of the 3d orbital and a small but important differenced between these 3s 3p and 3d are due to the  Heinsberg uncertainty principle and their principal quantum numbers ones rule and the numbers of weapons that can hold the penetration effect

And the electron in the 3s orbital is more likely to be close to the nucleus than is an electron in 3p orbital and the electron in 3p orbital in turn has a greater probability of being close to the nucleus than does one 3d  orbital

Know more about orbitals

https://brainly.com/question/28701015

#SPJ4

Answer:

Half-lives vary dramatically from isotope to isotope.  Half-lives are constant for a particular isotope.                                                

Explanation:

A,C

The correct statement about half life time is half lives vary dramatically from isotope to isotope and it is constant for a particular isotope.

Half life time of any reaction is that time where the concentration of product will become half of the initial concentration of reactant.

Half life time is not same for every substance it will vary from substance to substance. And for any particular substance half life time is constant untill the whole degradation of that substance. Half ife time is not depends on temeprature and pressure because it is not the rate.

Hence, half life time is constant for particular isotope and vary from isotope to isotope.

To know more about half life time, visit the below link:

https://brainly.com/question/2320811

Answer:

Both the forward and the reverse reaction rates decrease.i hope I help you to day and have a good day

False

Pure chromium is produced either by the thermal reduction of Cr2O3 with aluminum or by the electrolysis of trivalent chromium solutions... Not Silicon

So, the mass gained by the copper electrode is also 3.12 grams.

According to the law of conservation of mass, the mass lost by the zinc electrode during the operation of the cell must be equal to the mass gained by the copper electrode. Therefore, if the zinc electrode loses 3.12 grams of mass, the copper electrode must gain exactly the same amount of mass. The copper ions in the solution receive electrons at this electrode to produce copper metal, which then deposits on the electrode.

As a result, the copper electrode's mass grows as the reaction progresses.  The cathode is where reduction happens. The cathode is the electrode whose mass rose as a result. On the anode, oxidation takes place. The anode is the electrode whose mass has dropped as a result. As the Cu electrode gains mass, the Pb electrode's mass falls. The oxidation-reduction process takes place between active electrodes. Metal atoms in the electrode would lose mass if they oxidised and entered solution because metals produce cations.

Learn more about copper electrode Visit: brainly.com/question/31642782

#SPJ4

The four mole ratios are: 6 KOH / 2 K₃PO₄, 2 KOH / 1 Co₃(PO₄)₂,

1 K₃PO₄ / 1 Co₃(PO₄)₂, 1 Co(OH)₂ / 2 KOH.

Mole ratio refers to the ratio between the number of moles of two substances in a chemical reaction.

The given chemical equation is:

2 KOH + Co₃(PO₄)₂ → K₃PO₄ + Co(OH)₂

And the first mole ratio given is:

6 KOH / 2 K₃PO₄

To find the other mole ratios, we need to first balance the chemical equation. It is already balanced, so we can proceed to find the other mole ratios:

(2) 2 KOH / 1 Co₃(PO₄)₂

This ratio indicates that two moles of potassium hydroxide react with one mole of cobalt(II) phosphate.

(3) 1 K₃PO₄ / 1 Co₃(PO₄)₂

This ratio indicates that one mole of potassium phosphate is produced for every mole of cobalt(II) phosphate that reacts.

(4) 1 Co(OH)₂ / 2 KOH

This ratio indicates that one mole of cobalt(II) hydroxide is produced for every two moles of potassium hydroxide that react.

Therefore, the four mole ratios are:

(1) 6 KOH / 2 K₃PO₄

(2) 2 KOH / 1 Co₃(PO₄)₂

(3) 1 K₃PO4 / 1 Co₃(PO₄)₂

(4) 1 Co(OH)₂ / 2 KOH

Learn more about moles here:

https://brainly.com/question/26416088

#SPJ1

Correct question is:

KOH + Co₃(PO₄)₂ →

With the above balanced equation, make atleast four mole ratios ( one is done for you ):

\(\frac{6KOH}{2K3PO4}\)    -      -        -

Answer:

coal

Explanation:

Answer:

A

Explanation:

You can see the top part looks kinda like methane, and the bottom part looks like hexane.

Answer:

A is correctvia A P E x

Explanation:

A 4.0 m solution of kno3 has a volume of 1.8 l. if the solution is diluted to 9.0 l, then the new concentration is  0.8 m

The concentration of solution of the amount of solute that has been dissolved in a given amount of solvent or solution

Here given data is

C₁ = 4.0 m

V₁ = 1.8 l

C₂ = ?

V₂ = 9.0 l

So the formula is

C₁V₁ = C₂V₂

4.0 m×1.8 l = C₂× 9.0 l

C₂ = 7.2/9.0 l

C₂ = 0.8 m

Know more about solution

https://brainly.com/question/27145111

#SPJ4

The de Broglie connection between both the momentum p or the wavelength of an electron (=h/p, h is Hubble constant) is used to calculate the wavelength of the an electron for a given power.

The following equation gives the kinetic energy of the an electron accelerated thru a voltage differential of V volts: where e is indeed the electron charge and 1/2 mv2 = eV (1.6x10-19 C) If you want to respond to this question, you'll need to know the electron charge as well as the Planck constant.

Yet, a speeding electron creates a shifting magnetic field, which in turn causes a changing electromagnetic current, which in turn causes a shifting magnetic field, etc. Or to put it another way, it produces an electromagnetic wave.

To know more about wavelength visit:

https://brainly.com/question/31143857

#SPJ1

Answer:

The total number of atoms in this chemical formula

C8H3 NaBr 12

8+3+1+12=24

Solid turns into liquid by heating or melting.

A solid is made up of closely packed particles that are organised into a certain geometric pattern or crystal lattice. Although these particles vibrate while stationary, they are immobile. Particles vibrate more quickly and more intensely when heat is supplied to a solid. Particles can travel more freely because of the weakening and eventual breaking of the bonds that result from the increased mobility.

The solid starts to lose its stiffness and start to resemble a liquid as the particles move more freely. The particles in a liquid are still close together but are no longer organised into a predetermined lattice pattern. The alternative is that they can move and flow around one another, assuming the form of their container.

Read more about liquid on:

https://brainly.com/question/28261518

#SPJ1

Answer:

Because coal takes millions of years to develop, it is classified as a nonrenewable energy source. Coal contains the energy accumulated by plants that thrived in marshy forests hundreds of millions of years ago. Biofuel, on the other hand, is derived from biomass, such as plant or algal material or animal waste.

Explanation: