explain the difference in behavior between water and the buffer with addition of acid or base. are your results as expected? why or why?

Answer:

More electronegative

Explanation:

The oxygen and nitrogen in ammonia shows that they are more electronegative than the hydrogen  atoms.

The oxygen atom in water and the nitrogen atom in ammonia are more electronegative.

They attract the electrons more and they then become negatively charged.

The hydrogen will then become positively charged in the shared covalency.

Velocity = Frequency x Lambda

Assuming that this is referring to an electromagnetic wave. The velocity of light is 2.998 x 10^8 m/s.

Convert the wavelength from cm to m. So divide it by 100 and you get 5.4x10^-7 meters.

2.998 x 10^8 = 5.4 x 10^-7 (λ)

Solve for λ and you get 5.55 x 10^14 Hz

The frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

Frequency can be defined as the number of oscillations of a wave in one second. The frequency of the wave has S.I. units which are per second or hertz.

Wavelength can be described as the distance between the two most adjacent points in phase with each other. Two adjacent crests or troughs on a wave are separated by a distance of a single wavelength.

The relationship between frequency, speed of light, and wavelength is:

c = νλ

Given, the wavelength of the wave, λ = 5.4 ×10⁻⁵ cm

Then the speed of the wave is speed of light, c = 3 ×10¹⁰ m/sc

The frequency of the waves can be calculated from the above mentioned relationship:

The frequency of the given wave will be equal to:

ν = c/λ = 3× 10¹⁰/5.4 ×10⁻⁵ = 5.55 ×10¹⁴ s⁻¹

Therefore, the frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

Learn more about wavelength and frequency, here:

brainly.com/question/18651058

#SPJ2

We are given that–

\(\qquad\)________________________

As we know –

\(\qquad\)\( \pink{\bf\longrightarrow {Mass = Volume \times Density } }\)

\(\qquad\)\( \bf\longrightarrow Mass_{(Propane)} = 389 \times 19.3 \)

\(\qquad\)\( \bf\longrightarrow Mass_{(Propane)} = 7507.7 \: g\)

\(\qquad\)______________________

Mass of a substance is the amount of the constituting particles per unit volume. The mass of the \(\bold { 389\ cm^3}\) of propane is 7.507 kg.

Mass of a substance is the amount of the constituting particles per unit volume. It is measured in kilograms (kg).

The formula for mass,

M =  v x d

Where,

M - mass

v - volume = \(\bold { 389\ cm^3}\)

d - density = 19.3 g/cm

Put the values in the formula,

M =  \(\bold { 389\ cm^3}\)  x   19.3 g/cm

M = 7507.7 g

M  = 7.507 kg

Therefore, the mass of the \(\bold { 389\ cm^3}\) of propane is 7.507 kg.

To know more about density,

https://brainly.com/question/952755

Answer

84.8485 g

Explanation

Initial temperature, T₁ = 148 °C

Final temperature, T₂ = 20.4 °C

ΔT = T₂ - T₁

ΔT = 20.4 - 148

ΔT = -127.6 °C

Since heat is released, i.e heat loss, then Q = -324.8 calories

specific heat of the lead bar, c = 0.0300 cal/g°C

Using Q = mcΔT, we can find m as shown below

The mass of the bar is 84.8485 g

Answer:

1. They are tightly bound, so they cannot vibrate and release radiation.

2. The molecule vibrates and releases infrared energy

3. No, this is incorrect because water vapor is a greenhouse gas and will increase the greenhouse effect.

4. The burning of fossil fuels causes both air pollution and water pollution

5. Chlorofluorocarbons

6. Sulfur dioxide and nitrous oxides

7. Initiating efforts to remove trash from oceans

8. nitrogen and phosphorus

9. an area in a waterway where no plants or animals live

10. Fewer microorganisms will grow on the surface of the lake

11. Using water and chemicals at high pressure to open up fissures to access oil and gas recourses

12. Climate change

13. The mines are operated adjacent to important waterways and are polluting them.

Explanation:

Answer:

#'s 1-13 above are correct here are tqo out of the three discussions

it won't let me submit #14-16

Answer:

IUPAC name for Titin

Explanation:

The IUPAC name for Titin. This is the largest known protein and so has the longest chemical name. Written in full, it contains 189,819 letters.

When hcl is added to pure water, hcl molecules lose protons, while water molecules gain protons. in this reaction, hcl is an acid.

A substance which reacts with certain metals release hydrogen ions into water and produces salts. Acids give various dyes a reddish tints and it have a sour flavour. Some body-produced acids, a well known stomach acid, which support organ function. HCl is a specific type of acid.

Acids is divided basically into two categories:

Organic acid and inorganic acid. Another name of organic acid is mineral acids. In general, inorganic acid are strong as compared to organic acid. The major difference between these two is that organic compounds contain carbon atoms whereas inorganic compound or acid do not.

Thus, when HCl is added to pure water, HCl molecules lose protons, while water molecules gain protons. in this reaction, hcl is an acid.

learn more about HCl:

https://brainly.com/question/11800766

#SPJ4

Answer:

The valence electron configuration determines the group to which an element belongs to.

Explanation:

The valence electron configuration of an atom of an element refers to the number of electrons in that atoms outermost shell.

The valence electron configuration is related to the group number of an element in that the number of electrons in the valence shell of an atom of an element determines the group to which an element belongs to. For example, all elements having one valence electron belong to group IA of the periodic table. Similarly, all elements having seven valence electrons belong to group VIIA of the periodic table.

This is because, since the reactivity of an element is related to its ability to either gain or lose a certain number of electrons in its valence shell, elements having same number of valence electrons have similar chemical properties.

The correct answer is option C) Oceanic crust.

Oceanic Crust Oceanic crust, extending 5-10 kilometers (3-6 kilometers) beneath the ocean floor, is mostly composed of different types of basalts. Geologists often refer to the rocks of the oceanic crust as “sima.” Sima stands for silicate and magnesium, the most abundant minerals in oceanic crust.

Oceanic crust is thinner and denser than continental crust. This is because it has been compressed by the weight of the oceans it carries above it. It is also much younger than the Continental crust, as it is usually less than 200 million years old.

Learn more about Oceanic crust here: brainly.com/question/20512106

#SPJ2

Ionization energy increases as we move across the period from left to right.

order of ionization energy across period 2

Li < B < Be < C < O < N < F < Ne

What is Ionization energy?

Trends for Ionization energy

order of ionization energy across period 2

Li < B < Be < C < O < N < F < Ne

Learn more about Ionization energy at https://brainly.com/question/8980265

#SPJ4

Answer:

A cation.

Explanation:

When an electron is liberated, that means it is removed from the atom.

When an electron is lost, the atom is ionized, and becomes a cation.

It becomes a cation because it loses one negative charge, and therefore become positively charged.

Answer:

This is true

Explanation:

Because motion can change due to its speen rate and direction change

Answer:

4.70 grams of NH4Cl is needed to prepare 350 mL of a 0.25 M ammonium chloride solution.

We need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.

To determine the mass of NH4Cl needed to prepare the solution, we us use the formula:

m=M x V x MM ... (i)

where,

m= mass in grams

M=molarity of solution

MM= molar mass of compound

V= volume in litres

The number of moles of NH4Cl needed can be calculated using:

  Moles = Molarity x Volume ...(ii)

  Moles = 0.25 mol/L x 0.350 L

  Moles = 0.0875 mol

Hence we can replace M x V with number of moles in equation i.

The molar mass of NH4Cl is :

  Molar mass of NH4Cl = (1 x 14.01 g/mol) + (4 x 1.01 g/mol) + (1 x 35.45 g/mol)

  Molar mass of NH4Cl = 53.49 g/mol

We have all the variables

Putting them in equation i.

Hence,

  Mass (g) = Moles x Molar mass

  Mass (g) = 0.0875 mol x 53.49 g/mol

  Mass (g) = 4.68 g

Therefore, you would need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.

To learn more about Stoichiometry,

https://brainly.com/question/16060223

The mass of PbCl2 obtained is 18.78 g from 200.0 ml of the original solution.

When a solution of NaCl(aq) is slowly added to a solution of lead nitrate, Pb(NO3)2(aq), a precipitation reaction occurs, resulting in the formation of PbCl2(s). The process is continued until no further precipitation occurs. The precipitate is then collected by filtration, dried, and weighed. In this case, a total of 18.78 g of PbCl2(s) is obtained from 200.0 ml of the original solution.

This reaction can be explained by the principle of double displacement reactions, also known as metathesis reactions. In a double displacement reaction, the positive and negative ions of two different compounds switch places, forming two new compounds. In this case, NaCl and Pb(NO3)2 react to form PbCl2 and NaNO3.

The balanced equation for this reaction is:

2 NaCl(aq) + Pb(NO3)2(aq) → PbCl2(s) + 2 NaNO3(aq)

The amount of PbCl2 obtained can be determined by the stoichiometry of the reaction and the volume of the original solution. From the given information, it is not possible to calculate the concentration of NaCl or Pb(NO3)2 in the original solution. However, knowing the volume of the original solution allows us to determine the mass of PbCl2 obtained.

To calculate the mass of PbCl2, we use the equation:

mass = (volume of original solution) × (concentration of PbCl2)

In this case, the mass of PbCl2 obtained is 18.78 g from 200.0 ml of the original solution.

It is important to note that the concentration of PbCl2 in the original solution cannot be directly determined from the given information. Additional information, such as the concentration of NaCl or Pb(NO3)2, would be required to calculate the concentration of PbCl2 in the original solution.

Learn more about mass here:-

https://brainly.com/question/11954533

#SPJ11

The hybridization of the atomic orbitals in the central atom of a molecule lowers the overall energy of the molecule due to the maximization of the orbital overlap in the chemical bond.

The hybridization of the atomic orbitals is a process in chemistry associated with the combination of two different atomic orbitals in a hybrid orbital after the formation of a particular molecule.

Therefore, with this data, we can see that the hybridization of the atomic orbitals depends on the formation of molecules.

Learn more about the hybridization of the atomic orbitals here:

https://brainly.com/question/29514826

#SPJ1

For presenting the polar covalent bond, the correct option is A.

It existed at the time when atoms with distinct electronegativities share electrons should be in a covalent bond. The presenting of the polar covalent bond represent the two atoms electronegativities that it is two atoms should not be equal.

Learn more about the atom here: https://brainly.com/question/24412921

Melting or boiling points are the property that can be used to differentiate between a 50.-gram sample of solid potassium nitrate at stp and a 50.-gram sample of solid silver chloride at STP.

The melting point of a liquid is the temperature at which the liquid transforms from a solid to a liquid under atmospheric pressure. This is the location where the liquid and solid phases are equally present. The substance's melting point varies with pressure as well and is reported at standard pressure. The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. The melting point of silver chloride is 455°C, while the melting point of potassium nitrate is 334°C.

To know more about melting point and boiling point, here:

https://brainly.com/question/25777663

#SPJ12

Answer:

1. Atoms

3. Electrons

4. 3 pairs

5. Complete transfer of electrons

6. London dispersion forces

7. Energy

Explanation:

Atoms are the building block from which a compound is formed so we can say that composition of compounds depends on type of atoms. Electrons are shared unequally in a polar bond due to difference in electronegativity values of bonded atoms. There are 3 pairs of electrons are shared in nitrogen molecule. The transfer of electrons occurs from one atom to another in the formation of ionic bonds. London dispersion forces are the intermolecular forces that is responsible for the low melting and boiling points of a molecule or compound. Energy is needed to break the bonds that is present between the two bonded atoms.

A small nucleus with less than 20 protons will generally have a neutron-to-proton ratio (n/p) close to 1:1, meaning approximately an equal number of neutrons and protons.

The neutron-to-proton ratio in a nucleus is influenced by various factors, including the stability of the nucleus and the balance between the strong nuclear force and electrostatic repulsion. In smaller nuclei with fewer than 20 protons, the n/p ratio tends to be close to 1:1.

The strong nuclear force, which binds protons and neutrons together, plays a crucial role in stabilizing the nucleus. As the number of protons increases, the electrostatic repulsion between the positively charged protons also increases. To counterbalance this repulsion and maintain stability, additional neutrons are needed. In smaller nuclei, the number of protons is relatively low, and a nearly equal number of neutrons can effectively stabilize the nucleus.

It's important to note that this is a general trend and not a strict rule. There can be variations in the neutron-to-proton ratio among different elements and isotopes, even within the category of small nuclei. The specific number of neutrons relative to protons may vary depending on the specific element or isotope under consideration.

Learn more about neutrons here: https://brainly.com/question/31977312

#SPJ11

Answer:

It's D

Explanation:

Answer:

4.7 x 10^14 Hz

Explanation:

From Bohr's theory, the energy absorbed or emitted (ΔE) by an atom transiting from one energy level to another is given as;

ΔE = E4 - E2

Where;

E4 = energy corresponding to the energy level n=4

E2 = energy corresponding to the level n= 2

ΔE = (-2.10 x 10-19) - ( - 5.20 x 10-19)

ΔE =3.1 x 10-19

But

ΔE = hf

h = Plank's constant

f= frequency of photon absorbed

f = ΔE/h = 3.1 x 10-19/6.6 x 10-34

f = 4.7 x 10^14 Hz

A formula for the sensitivity dR/dM  represents the sensitivity of the body's reaction to the medication. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

To find a formula for the sensitivity, dR/dM, let's differentiate the given function R(M) with respect to M.

Step 1: Start with the function \(R(M) = M^2(C/2 - M/3).\)

Step 2: Apply the power rule of differentiation to differentiate M^2. The power rule states that if

\(f(x) = x^n, then f'(x) = n*x^(n-1). \\\)

n this case, n = 2.

\(dR/dM = 2M^(2-1)*(C/2 - M/3).\)

Simplifying, we have:

\(dR/dM = 2M*(C/2 - M/3).\)

Step 3: Distribute the 2M to each term inside the parentheses:

\(dR/dM = M*C - (2M^2)/3.\)

This formula represents the sensitivity of the body's reaction to the medication, dR/dM. It shows how the reaction changes with respect to the dose of the medication, M. The term M*C represents the contribution of the constant C to the sensitivity, while the term \((2M^2)/3\) represents the contribution of the dose M itself.

Learn more about sensitivity from this link:

https://brainly.com/question/14472410

#SPJ11

the formula for the sensitivity, or the rate of change of the reaction R with respect to the dose M, is

dR/dM = MC - M\(^2^/^3\)

We calculate the derivative of the reaction function R(M) with respect to M.

the reaction function: R(M) = M²(C/2 - M/3)

We will apply  the power rule and the constant multiple rule of differentiation,

dR/dM = d/dM [M²(C/2 - M/3)]

= 2M(C/2 - M/3) + M²(0 - (-1/3))

= 2M(C/2 - M/3) + M\(^2^/^3\)

dR/dM =\(MC - 2M^2^/^3 + M^2^/^3\)

= \(MC - M^2^/^3\)

Learn more about power rule at:

https://brainly.com/question/29288036

#SPJ4

A. The mole fraction of O2 is X(O2) = n(O2) / n(total) = 0.472 mol / 1.988 mol = 0.237

To find the mole fraction of O2, we first need to calculate the total number of moles of all the gases in the mixture:

n(O2) = 15.1 g / 32.00 g/mol = 0.472 mol

n(N2) = 8.17 g / 28.01 g/mol = 0.292 mol

n(H2) = 2.47 g / 2.02 g/mol = 1.224 mol

The total number of moles is:

n(total) = n(O2) + n(N2) + n(H2) = 1.988 mol

The mole fraction of O2 is:

X(O2) = n(O2) / n(total) = 0.472 mol / 1.988 mol = 0.237

To know more about mole fraction:

https://brainly.com/question/7530928

#SPJ11

Answer:

I'd guess A

Explanation:

Answer: A to determine the level of radionuclides present

Explanation:

I took the test

To calculate the molar mass of the unknown compound, we can use the ideal gas law equation g/mol is 33.9 g/mol.

I apologize for any confusion. Could you please provide more specific information or context regarding the compound you are referring to? Without knowing the specific compound or additional details, it is difficult to provide a meaningful response.In chemistry, a compound refers to a substance composed of two or more different elements chemically bonded together. For example, water (H2O) is a compound composed of hydrogen and oxygen.Compound Interest In finance, compound interest refers to the interest that is calculated on the initial principal as well as the accumulated interest from previous periods. This means that the interest earned in each period is added to the principal, and subsequent interest is calculated based on the new total.

To know more about compound visit :

https://brainly.com/question/14117795

#SPJ11

The bond order for the species F2^2-, F2^-, F2, F2^+, and F2^2+ will be determined, and their order of increasing bond energy and bond length will be listed.

The bond order of a species can be determined by subtracting the number of antibonding electrons from the number of bonding electrons and dividing the result by 2.

The species F2^2-, F2^-, F2, F2^+, and F2^2+ will be evaluated accordingly to determine their respective bond orders.

The bond energy and bond length of a molecule are related to its bond order. Generally, as the bond order increases, the bond energy increases, indicating a stronger bond, while the bond length decreases, representing a shorter bond.

To explain these facts, molecular orbital (MO) diagrams can be employed. MO diagrams illustrate the energy levels and occupancy of MOs in a molecule. The sequence and occupancy of MOs provide insights into the stability and properties of the molecule.

By examining the MO diagrams for the aforementioned species, the sequence and occupancy of MOs can be observed, enabling the determination of their bond orders. The bond orders, in turn, can be used to determine the order of increasing bond energy and bond length.

Using this approach, the bond order, bond energy, and bond length for each species can be determined and arranged in the appropriate order, supported by MO diagrams that showcase the sequence and occupancy of MOs.

Learn more about bond energy here:

https://brainly.com/question/20536349

#SPJ11

Answer:

-8 m/s^2

Explanation:

The formula for acceleration is:

a= v^2 - v^1/t

a= acceleration

v^2- final velocity which in this case would be 0 since the jet comes to a stop.

v^1= original velocity which is 80 m/s.

t=time or 10s

Substitute the letters for the numbers and you get this:

a= 0 - 80/10

0 - 80= -80

-80 divided by 10 is -8.

Hope this helps! :)