Which of the following examples is a way to live sustainably?
Responses

Drive your car as much as possible.
Have a nice green, fertilized lawn.
Recycle and reuse materials.
Leave computer screens and light bulbs on.

Answer:-

an orbital road

Explanation:-

orbital, in chemistry and physics, a mathematical expression, called a wave function, that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule.

Related Topics:- g-orbital p-orbital f-orbital over...

Subjects Of Study:- atomic model line spectrum

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Answer:

An orbital, also called electron shell, is the path around which the electrons orbit the nucleus of the atom. It has a capacity of 2 electrons in the first orbital, and 8 in the rest. The number of orbitals in an atom can help us find out the period number of that atom.

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There are so many laws for ideal gas at constant temperature , at constant pressure, the law at constant volume is called Gay-Lussac's law. The pressure calculated is 1.555atm.

According to this law, pressure is directly proportional to temperature. This gas law is valid only to ideal gas not on the vanderwaal gas. Since it is mentioned in the question that volume is constant we can apply Gay-Lussac's law over here.

Mathematically

[tex]P_{1} T_{2} =P_{2} T_{1}[/tex]

[tex]P_{1}[/tex]= 1.50 atm

[tex]T_{1}[/tex]=295 K

[tex]T_{2}[/tex]= 305 K

Substituting all values given in the question

[tex]P_{2}[/tex]=  (1.50 atm×305 K)÷295 K

  =1.555atm

Thus the pressure is 1.555atm

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The boiling point of nitrogen is so low because the nitrogen molecules are very small. The small size of the molecules means that they can escape the liquid state very easily.

What is nitrogen?
The chemical element with the atomic number 7 and the letter N is known as nitrogen. The lightest element in group 15 of the periodic table, often known as the pnictogens, nitrogen is a nonmetal. It is a typical element in the cosmos, believed to be eighth in the Milky Way and the Solar System in terms of overall abundance. Two of the element's atoms combine to generate N₂, an odourless and colourless diatomic gas, under standard pressure and temperature. The majority of the atmosphere on Earth is made up of N₂, making it the most prevalent uncombined element. All living things contain nitrogen, which is principally found in the amino acids that make up proteins, the nucleic acids that make up DNA and RNA, and the energy-transfer molecule adenosine triphosphate.

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The number of moles of iron needed to react with 2.75 moles of Sulfur 1.83 moles of iron.

Multiply the number of moles known by the stoichiometric ratio of the unknown and known to determine the number of moles required for the reaction. Balance chemical reactions. Take the ratio of the product stoichiometric coefficient to the reactant stoichiometric coefficient.

Multiply the ratio obtained in step two by the number of moles of reactants indicated. Multiply the atomic weight of each element from the periodic table by the number of atoms of that element present in the compound.  Add them all up and put the units of grams/mole after the number. For many but not all problems atomic and molar masses can simply be rounded to the nearest 0.1 g/mol.

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Explanation:

We have to find the overall charge of a substance that contains 15 protons, 18 electrons and 16 neutrons.

A proton is a subatomic particle that we can find in the nucleus of an atom. Its charge is +1.

An electron is a subatomic particle that we can find around the nucleus and its charge is opposite to the one of the proton. Its charge is -1.

A neutron is a subatomic particle that can be found in the nucleus and has no charge, so its charge is 0.

charge of p+ = +1 charge of n° = 0 charge of e- = -1

Our element has 15 protons, 18 electrons and 16 neutrons, the overall charge will be.

overall charge = 15 * (+1) + 18 * (-1) + 16 * (0)

overall charge = -3

Answer: d. -3

The periodic properties of the d-block elements differ from the main group elements in that they are less sensitive and less reactive.

The periodic table is divided into blocks; s-block, p-block, f-block, and d-block. The d-block elements are also known as transition metals.

The s and p-block elements are known as the main group elements. Compared to these, the d-block elements have some different properties because of their partially filled d-orbitals.

However, the d-block elements still have many similar properties. These elements can still displace hydrogen from dilute acid and some of them can react with water under appropriate conditions.

The first row of these transition metals are found to be more reactive than the second and third row. However, they are not as reactive as the s-block and p-block elements.

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Answer:

I would save and invest it.

Explanation:

Refrigerator is considered to be best for storing bacteria because the Low temperature of refrigerator reduces the metabolic activity of the bacteria which increases the life time of bacteria.

The bacteria are cultured and grown on the glass plates and then we store them in the fridge. As we know, specific bacteria are hard to culture.

Because of the low temperature, the metabolic activity of the bacteria decreases. This way the we don't have to culture the bacteria again and again and a number of experiments can be performed on the bacteria in a short interval of time which is beneficial for the research oriented purposes.

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In an acid-base neutralization titration, where the end point is a neutral solution, the unknown concentration of the receiving solution can be calculated because the concentration of he acid solution must match the concentration of the basic solution

Neutralization is a chemical reaction where an acid and a base react with each other in equimolar amount and acid base neutralization titration is based on acid base in quantitatively measurement and that's why it is called as acid base neutralization titration

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I was asking about this earlier

If the initial pressure of (CH3)20, is 135 torr, the final pressure after 1420s is 51.4torr .the half life is 1019s.

We know ,

For the 1st order reaction we have the reaction in terms of pressure is

Pₓ = P₀ e⁻kt

lnPₓ = lnP₀ - kt

kt = lnP₀ -lnPₓ  = 2.303log P₀/Pₓ

t = (2.303/k) logP₀/Pₓ

Where ,

k = rate constant = 6.8×10⁻4 s⁻1

P₀ = initial pressure = 135torr

Pₓ= final pressure

t = time taken = 1420s

putting the values in the places of the symbol ,

1420 =( 2.303 / 6.8 ×10⁻4 ) log 135/Pₓ

1420 = (2.303×10^4/6.8 ) ×log 135/Pₓ

(1420×6.8 / 2.303×10^4) = log 135/Pₓ

0.41928 = log 135/Pₓ

135/Pₓ = 10^0.41928 = 2.6259

Pₓ = 135/2.6259 = 51.4 torr

Hence , the final pressure after 1420s is 51.4torr .

b) the half life formula is given by ,

T1/2 = 0.693/k = 0.693 / 6.8×10⁻4 = 0.1019×10^4 =1019s

Hence , the half life is 1019s .

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The crystallization makes the protein active. The diffractive pattern observed during X-ray exposure to the crystal can be used to calculate the electron density map of the crystalline protein. this makes option D correct.

Proteins are complex amino acids. They are long chain or structure made up of amino acids. Proteins are of different types, globular protein which are soluble and fiber like protein which are insoluble. Hair, skin,muscles are fiber like proteins. Egg albumin and egg white are gobular proteins. Protein may vary from structure to structure. Some are primary structured, some are secondary, some are tertiary or some are Tetranary. 

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The ksp of caf2 if its molar solubility is 2.04 x 10-4 m is 3.40 x 10⁻¹¹.

Solubility is described because the maximum quantity of a substance with the purpose to dissolve in a given quantity of solvent at a distinct temperature. Solubility is a function property of a selected solute-solvent combination, and exclusive substances have greatly differing solubilities.

calculation:-

Caf₂ ----> Ca²⁺   + 2f⁻

                  s          2s

Ksp = [Ca²⁺] [f⁻]

ksp = [s][2s]²

      = 4s³

Given

S = 2.04 x 10⁻⁴

⇒ Ksp = 4( 2.04 x 10⁻⁴)²

⇒ Ksp = 4 ( 8.49 x 10⁻¹²

⇒ Ksp = 3.40 x 10⁻¹¹

Solubility is the capability of a substance, the solute, to form an answer with some other substance, the solvent. Insolubility is the other belonging, the inability of the solute to shape this kind of solution.

Solubility refers to the best quantity of solute that may dissolve in a regarded amount of solvent at a given temperature. In a solvent, an answer is a homogeneous aggregate of one or greater solutes.

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The scientific explanation about conduction is; heat transfer by conduction is the process by which heat flows from region of higher temperature to another region of lower temperature without the bulk movement of the particles of the substance.

Conduction heat transfer is the transfer of heat by means of molecular excitement within a material without bulk motion of the mater.

Heat transfer by conduction allows heat to be transferred from a region of higher temperature, to another region of lower temperature without the bulk or entire movement of the particles of the substance.

Thus, we can conclude that conduction, a method of heat transfer occurs as a result of temperature difference between two bodies.

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The dimensions of a crystal's surfaces (also referred to as "faces"), edges, and angles between them all play a role in determining its shape.

The distinctive external shape of a single crystal or crystal group is known as a crystal habit in mineralogy. A crystal's habit depends on its crystallographic form and growth circumstances, which typically results in irregularities because there isn't much room in the crystallizing medium (commonly in rocks). Habit, a characteristic closely related to crystal shape, includes the size and shape of the crystal faces, the way in which different forms combine, the degree to which they are each developed, and the way in which different crystals coexist. Therefore, habit is the distinctive appearance that a mineral can have.

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The mass of potassium chloride, KCl needed to make the solution is 148 g

We'll begin by obtaining the mole of KCl. This can be obtained as follow:

Molarity = mole / volume

Cross multiply

Mole = Molarity x Volume

Mole of KCl = 4 × 0.5

Mole of KCl = 2 moles

Finally, we shall determine the mass of KCl

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of KCl = 2 × 74

Mass of KCl = 148 g

Thus, the mass of KCl is 148 g148 g

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The density of the resultant mixture is 0.925 g/cm³.

The mass of each component of the mixture is calculated as follows;

m = ρV

where;

mass of water = 20 cm³  x  1 g/cm³ = 20 g

mass of ethanol = 20 cm³  x 0.789 g/cm³ = 15.78 g

Total mass of the mixture = 20 g + 15.78 g = 35.78 g

The density of the mixture is calculated as follows;

Density of the mixture = total mass / total volume

Density of the mixture = (35.78 g) / (38.7 cm³) = 0.925 g/cm³

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One part of the earth system water-air, rock or life and describe how other parts might be effected if the first part were removed then the biosphere which contain all planet living organism and in the atmosphere  which contain all planet air

Earth system is the earth interacting with physical, chemical as well as biological and the sphere are so closely connected that a change in one sphere often result in change one or more of other sphere and events that occur in one component eventually affect the other and the components are geosphere is the ability to live in certain places whereas hydrosphere is the ability to use water whereas atmosphere impacting the temperature and ability to breath and also the water-air, rock in that one is missing so it will definitely affect the other

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the components are mixed are uniformly distributed throughout the mixture, then that type of mixtures is known as a homogenous mixture.

In most technical applications, homogeneous refers to a system's qualities being constant throughout the entire system, while heterogeneous (sometimes called inhomogeneous) refers to a system's properties changing within it. Any system with two phases, such as ice and water, is referred to as heterogeneous.

A combination is considered homogeneous when the ingredients are thoroughly combined and dispersed across the entire mixture. These mixes are homogeneous throughout and include only one phase of substance.

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The preventable error of Clyde Clumsy is 4.2 g.

In measurements, errors refer to differences between the true measurement of an object and the measured value of the object.

The error in measurements can be mathematically expressed as:

Error = True value - measured value.

The amount of error in measurement without taking the sign (positive or negative) into consideration is known as absolute error.

In the case of Clyde, the true weight of the object in question is 50.0 g. Clyde weighed it as 45.8 g instead. The error in Clyde's measurement can be calculated as:

True value = 50.0 g

Measured value = 45.8 g

Error = 50.0 - 45.8

          = 4.2 g.

In other words, the error in Clyde's measurement is 4.2 g.

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Xenoliths are pieces of rock trapped in another rock that are older than white granite due to the principle of inclusion.

The principle of inclusion states that rock included in another rock should always be older than the inclusion rock and therefore ti can be used to estimate the age of different types of rocks.

Therefore, with this data, we can see that the principle of inclusion is used to estimate the age of rock and it is based on the layer of different types of rocks

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Ni(s)+ 2H⁺(aq) → Ni²⁺(aq)+ H₂(g)

What do understand by redox reaction?

Redox reactions are oxidation-reduction chemical processes in which the oxidation states of the reactants change. Redox is a shortened version of reduction-oxidation. Two distinct processes—a reduction process and an oxidation process—can be used to describe all redox reactions.

Ni(aq) + e⁻ → Ni(s) ; E⁰ = -0.23 v

H⁺(aq) + e⁻ → H ; E⁰ = -0.00 v

So, the equation when Ni metal is put into an aqueous solution  of HCl,

Ni(s)+ 2HCl(aq) → NiCl₂(aq)+ H₂(g)

Therefore, net ionic reaction is:

Hence, Ni(s)+ 2H⁺(aq) → Ni²⁺(aq)+ H₂(g)

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There are 9 steps of the election process Call for Nominations, Preliminary Reviews, Ballot Petition Rules, Nominee Interviews, Committee Meeting, Slate of Candidates Announcement, Voting Opens etc..

Request for Nominations

The nomination process is made public by the Academy.

introductory reviews

Candidates are required to submit biographical sketches that contain digital images, films they have recorded themselves, and curriculum vitae or resumes.

Election Petition Rules

Check out the requirements for adding a petitioner to the general election ballot.

interviewing nominees

Virtual meetings with the Nominating Committee are held.

Commission Meeting

The Nominating Committee meets in late fall to review the materials submitted by candidates, taking into account which positions are open on the ballot, and evaluating key personal, interpersonal, and demonstrated leadership skills as they relate to the qualifications and skill set needs for each position.

Release of the Candidate Slate

Announcing candidates for posts includes posting supporting information online, in the Academy's electronic weekly newsletter, and on social media, including images, self-recorded films, biographical sketches, and answers to questions posed by the Nominating Committee.

Voting begins

Members take part in computerised voting during the month of February for the national Academy elections.

Announcing the results of the election

Following the tallying of all votes and the notification of candidates, the Academy informs members of the election results.

Review of the election and nomination processes

The process for nomination and election is assessed at each stage. The Nominating Committee, the Academy, and the applicants are all asked for their opinions.

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When we observe the spectral lines for a variety of different elements within an atom we see that transition of electrons causes it to emit light in specific spectral lines in a spectrum.

What is transition of electrons?

In an atom, the jump of an electron from one energy phase to another energy phase is called transition of electrons.

Typically, an electron continue to change its quantized energy levels from one to another within few nanoseconds by absorbing UV radiations and that is why the spectrum or spectral lines appear to be discontinuous.

In general, transition of electrons mostly occurs in s, p and n energy orbitals.

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Considering the Boyle's law, the resulting volume if the pressure were increased to 3.9 atm and the temperature did not change is 4 L.

As the volume increases, the particles (atoms or molecules) of the gas take longer to reach the walls of the container and therefore collide less times per unit of time against them. This means that the pressure will be lower because it represents the frequency of shocks of the gas against the walls. In this way, pressure and volume are related, determining Boyle's law that says:

"The volume occupied by a given mass of gas at constant temperature is inversely proportional to the pressure"

Boyle's law is expressed mathematically as:

P×V=k

Considering an initial state 1 and a final state 2, the following holds:

P₁×V₁=P₂×V₂

In this case, you know:

Replacing in the Boyle's law:

1.3 atm× 12 L=3.9 atm× V₂

Solving:

(1.3 atm× 12 L)÷3.9 atm= V₂

4 L= V₂

The new volume will be 4 L.

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A 99.0 ml sample of 1.00 m NaOH is mixed with 49.5 ml of 1.00 m H₂SO₄ in a large styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 23.00 °c. after adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 31.50 °c. Assuming that the density of the mixed solutions is 1.00 g/ml, that the specific heat of the mixed solutions is 4.18 j/(g·°c), and that no heat is lost to the surroundings, the enthalpy of reaction is found to be 10.6 x 10⁻² kJ/mol.

The enthalpy change of the reaction can be calculated by using the mass of solution, temperature change, and specific heat of water when sodium hydroxide and sulfuric acid reacts.

The balanced chemical equation for the reaction is given as,

H₂SO₄(aq) + 2 NaOH(aq) → Na₂SO₄(aq) + 2H₂O(l)

We know that,

volume of solution is 49.5 mL + 99.0 mL = 148.5 mL

Heat of the reaction can be given as - q = mcΔT

Mass of the solution, m = 148.5 x 1 g   = 148.5 g

                                                       1 mL

Specific heat, c = 4.18 J /g°C

Temperature change, ΔT = 31.50°C - 23.00°C = 8.5°C

Substituting values in equation,

q = 148.5 g x 4.18 J/g°C x 8.5°C = 5276.20 J

Now we will find moles,

Moles of NaOH = 0.99 mL x 1.00 M = 0.99 mol naOH

Moles of H₂SO₄ = 49.5 mL x 1.00 M = 49.5 mol H₂SO₄

Enthalpy of the reaction will be -

Enthalpy = 5276.20 J = 10.6 x 10⁻² kJ/mol

                   49.5 mol

Hence, the enthalpy is 10.6 x 10⁻² kJ/mol

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The chocolate chips that are in one mole of chocolate chips is 6.02214 × 10²³ chips.

The mole of a substance is defined as the amount of substance that is my are up of 6.02214 × 10²³ particles and this number is called the Avogadro's number.

This means that 1 mole of substance= 6.02214 × 10²³ of particles that makes up the substance.

The Avogadro's number is a constant used for all substances such as the chocolate chips.

That is to say, one mole of the chocolate chips has a mass of 0.324 g but contains 6.02214 × 10²³ particles of chocolate chips.

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The number of chocolate chips that are included inside one mole of chocolate chips is equal to 6.02214 ×10^23 chips.

The quantity of a material that may be made up of 6.02214 ×10^23 particles is referred to as a mole, and this number is known as Avogadro's number. The mole is the unit of measure used to describe this quantity.

This indicates that there are 6,02214×10^23 particles in one mole of the material, which implies that one mole of the substance is equal to one mole.

Avogadro's number is a constant that is applied to many different kinds of things, including chocolate chips.

In other words, one mole of chocolate chips has a mass of 0.324 g, yet it includes 6.02214 ×10^23 individual chocolate chip particles.

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Answer: Higher and longer glide experience.

Explanation:

Answer:

it's c

Explanation:

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