Biodiversity, aka biological diversity, usually refers to

1)The same species in a general location
2)The number of different species in a given area
3)The number of plant species in a given area
4)The number of animal species in a given area

Answers

Answer 1
The answer is number 2. Just for extra information the definition of biodiversity is as follows: the variety of life in the world or in a particular habitat or ecosystem. :))

Related Questions

___used to express the mass of atomic and subatomic particles

Answers

An Atomic Mass Unit (AMU or amu) is a measure of mass and is used to express the mass of atomic and subatomic particles.

The Atomic Mass Unit (AMU or amu) of an element/particle constituent is a measure of its atomic mas. The AMUis also known as the dalton (Da) or a unified atomic mass unit (u). The measure of AMU expresses both atomic masses and molecular masses.

AMU is defined as one-twelfth (1/12th) of the mass of an atom of carbon-12 (12C). Carbon-12 (12C) is the most abundant naturally existing carbon isotope, accounting for over 98% of the carbon found in nature. It has an AMU of 12.

The atomic mass of an element/particle constituent measured in amu, is the same as the mass in grams of a single(one) mole of that element.

The atomic mass units of first 20 elements of periodic table are mentioned below:

Hydrogen - 1.007Helium - 4.002Lithium - 6.941Beryllium - 9.012Boron - 10.81Carbon - 12.011Nitrogen - 14.006Oxygen - 15.999Fluorine - 18.998Neon - 20.179

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What produces a total of 2 ATP molecules from each glucose molecule?.

Answers

Anaerobic respiration results in the production of 2 ATP molecules from each glucose molecule

Both aerobic and anaerobic conditions are conducive to glycolysis. Pyruvate enters the citric acid cycle and goes through oxidative phosphorylation, which results in the net synthesis of 32 ATP molecules under aerobic conditions.

Pyruvate undergoes anaerobic glycolysis under anaerobic circumstances, converting to lactate. Two ATP molecules are produced during anaerobic respiration. A monosaccharide containing six carbon atoms and six oxygen atoms, glucose is a hexose sugar.

Aldehyde group is connected to the first carbon, and hydroxyl group is attached to each of the next five carbons. In the course of glycolysis, glucose eventually decomposes into pyruvate and energy, yielding a total of 2 ATP (Glucose + 2 NAD+ + 2 ADP + 2 Pi --> 2 Pyruvate + 2 NADH + 2 H⁺ + 2 ATP + 2 H₂O).

Phophorylation is made possible by the hydroxyl groups. Glucose 6-phosphate is the specific kind of glucose that is employed in glycolysis.

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Calculate the volume in mL of a 1.420 M NaOH solution required to titrate the following solutions:

(a) 25.00 mL of a 2.430 M HCI solution

(b) 25.00 mL of a 4.500 M H2SO4 solution

(c) 25.00 mL of a 1.500 M H3PO4 solution


Answers

The NaOH solution has a 159.75 mL capacity.1.500 M H3PO4 solution in 25.00 mL.

How much NaOH was used for the titration?

In a titration of the two chemicals, 26.60 mL of sulfuric acid is neutralized by 32.20 mL of sodium hydroxide that has a concentration of 0.250 mM.

In a titration of the two chemicals, 26.60 mL of sulfuric acid is neutralized by 32.20 mL of sodium hydroxide that has a concentration of 0.250 mM.

The percent volume/volume of a solution can be calculated using the following formula, which bases its results on the milliliter as the unit of volume (v):

As mL of solute per 100 mL of solution, % v/v is expressed.

X% = 5.0 mL HCl/100 mL of solution is a good illustration.

X/100 = 5.0/100. 100X = 500. \sX = 5.0%%

           

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Is C2H6 a non-polar molecule?.

Answers

A molecule which have atoms of significantly different electronegetivities exhibits polarity. In case of carbon and hydrogen there are no such significant differences. So ethane is non-polar.

Ethane is formed by covalent bond between carbon and hydrogen atoms. One carbon bonds with one another carbon atom and 3 hydrogen atoms. For exhibiting polarity, there must be significant differences in electronegativity.

While considering the C-H bond, electronegativity of carbon is 2.5 and hydrogen is 2.1. The difference is only 0.4, and such a difference does not contribute to polarity.

So, Ethane is a non-polar molecule.

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5xy=9
15x3y=27 Determine if the following ytem of equation ha no olution, infinitely many olution, or exactly one olution

Answers

The equations will have only one solution.

The y-coefficients are opposites, so you can eliminate the y-variable by adding the equations:

 (2x -y) + (3x +y) = (2) + (-6)

 5x = -4

 x = -4/5 = -0.8

Substituting this into the second equation, we have ...

 3(-0.8) +y = -6

 y = -3.6 . . . . . . . add 2.4 to both sides

The solution is (x, y) = (-0.8, -3.6).

What is an equation?

The word equation and its cognates in other languages ​​can have subtly different meanings; for example, in French, an equation is defined as containing one or more variables,

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How would I balance this?

Answers

The balanced chemical equation is as follows:

4KClO₃ ₍s₎ ⇒ 3KClO₄ ₍s₎ + 3KCl

What is balance chemical equation ?

The term balanced chemical equation is defined an equation where the number of atoms of each type in the reaction is the equal on both reactants and product sides.

The chemical equation must be balanced in order to obey the law of conservation of mass. When the number of different atoms of elements in the reactants side equals the number of atoms in the products side, the chemical equation is balanced.

Thus, The balanced chemical equation is as follows:

4KClO₃ ₍s₎ ⇒ 3KClO₄ ₍s₎ + 3KCl

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what effect does the coriolis effect have on global winds?

Answers

The Earth's rotation means that we experience an apparent force known as the Coriolis force. This deflects the direction of the wind to the right in the northern hemisphere and to the left in the southern hemisphere.

What is coriolis force?

The Coriolis effect describes the deflection pattern of objects that are not firmly attached to the ground as they travel long distances around the Earth. This effect is responsible for many large-scale weather patterns.The key to this effect lies in the Earth's rotation. Specifically, the Earth rotates faster at the equator than at the poles.

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Are cricket ball of 0. 5 kg is moving with a velocity of hundred Metre per second the wavelength associated with its motion is?.

Answers

Its motion's corresponding wavelength is λ = [tex]1.32 \times 10 ^{-35}[/tex]

The wavelength, which will also apply to troughs, is the separation between two wave crests. The frequency is measured in cycles per second (Hz), which is the quantity of vibrations that cross a specific area in a second (Hertz). In this article, the relationship between wavelength and frequency is covered.

The ball (m) has a mass of 0.5 kg.

The ball is moving at a speed of 100 metres per second.

The de Broglie matter-wave equation reveals the following

[tex]\lambda = \frac{h}{mv}[/tex]

where m is mass of the body and v is the velocity and h is height of the body.

[tex]\lambda = \frac{ 6.62\times10^{-34}}{0.5 \times 100 }[/tex]

λ = [tex]1.32 \times 10 ^{-35}[/tex].

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What does an atomic number represent in an atom? question 3 options: a. number of protons b. number of electrons c. number of neutrons d. number of protons and neutrons

Answers

a. number of protons

The building block of all elements and the smallest component into which an element can be divided called?

Answers

The building block of all the elements and the smallest component into which an element can be divided is called as an atom.

An atom is the smallest part or the component into which the elements can be divided. Atom is the building block of the matter. The basic particles that an atom made up of  are electrons, protons, and the neutrons.

The example is : An electron of a hydrogen atom will behave similar as the electron of an oxygen atom. Electron is the sub atomic particle of an atom and it cannot retain its chemical properties.

Thus , atom is the building block of all the elements.

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Which of the following is reduction reduction reaction? A. 2Mg(s)+O2→2Mg(s)B. S(s)+O2(g)→SO2(g)C. 2HgO(s)→2Hg(l)+O2(g)D. Mg(s)+S(s)→MgS(s)

Answers

The reduction reaction is given as :

2Mg  +  O₂   --->  2MgO2HgO  ---->  2Hg  +  O₂Mg  +  S   --->   MgS

The reduction reaction is the reaction in which the addition of the hydrogen takes place and the addition of the electropositive element and the removal of the oxygen or any of the electronegative atom.

The reduction reaction is given below as :

2Mg  +  O₂   --->  2MgO2HgO  ---->  2Hg  +  O₂Mg  +  S   --->   MgS

The gain of the electron is also called as the reduction reaction. The one which is reduce will acts as a oxidizing agent.

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A football player runs in a straight line down the field, crossing the 20-yard line when the stopwatch reads 12 seconds and crossing the 70-yard line when the stopwatch reads 17 seconds. What is his speed in yards per second?

Answers

Answer: 10y/s

Explanation:

What is the coefficient of the hypochlorite ion when the following equation is balanced?

ClO- + S2O3 2- —> Cl - + SO4 2-

(basic solution)

Answers

To balance this equation
ClO^-+S2O3> Cl^- +SO4^-2
1 Cl 4Os 2Ss. 1 Cl 1S 4Os

4Cl^-

Strontium-90 has a half-life of 29 years. If a site held 2000 kg of this isotope, approximately what mass of strontium-90 would be left after 116 years?.

Answers

After 116 years, 125 g of strontium-90 would still be present.

Describe half-life.

A substance's half-life is the amount of time needed for half of a radioactive substance's original quantity to degrade. It is a phrase that is used in nuclear chemistry to describe how quickly unstable atoms radioactively decay into other nuclear species by emitting particles or the amount of time needed for the rate of radioactive material disintegrations per second to drop to half of what it was initially.

The number of half-lives needed to compute the mass of strontium-90 after 116 years is calculated as follows: 116/20=4 half-lives.

The mass of Sr-90 during the first half life is 2000/2=1000 g.

Sr-90's mass is 1000/2, or 500 g, during its second half life.

Sr-90 mass at its third half-life is 500/2, or 250 g.

Sr-90 mass equals 250/2=125 g at the fourth half-life.

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How many grams are in 23 moles of Fe

Answers

There are 23 atoms of Fe in a 55.845 gram. As a result, after dividing our mass of 239 grams by the iron formula mass of 55.84 grams per bole, formol equals after calculation.

How do I translate grams to moles?

Use the millimeters to mole formula to calculate the molecular weight n, of a substance with a given mass, m, (in grams) accurately. n = m / M, where M is the substance's molar mass also known as gram-molecular weight. a substance's molecular weight expressed as a mass in grams. Example: NaCl salt weighs 58.44 grams per gram-mole. American Meteorological Society, copyright 2022.

What is moles and how is it made?

Number of Avogadro = 6.023 × 10²³. The products of every chemical reaction are measured using the Avogadro number. 1 mole of atoms, molecules, or particles is equal to 6.023 x 1023. Calculating the number of molecules is as follows: mole number = quantity of material / mass of one mole.

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There are 23 atoms of Fe in a 55.845 gram. As a result, after dividing our mass of 239 grams by the iron formula mass of 55.84 grams per bole, formol equals after calculation.

How do I translate grams to moles?

Use the millimeters to mole formula to calculate the molecular weight n, of a substance with a given mass, m, (in grams) accurately. n = m / M, where M is the substance's molar mass also known as gram-molecular weight. a substance's molecular weight expressed as a mass in grams. Example: NaCl salt weighs 58.44 grams per gram-mole. American Meteorological Society, copyright 2022.

What is moles and how is it made?

Number of Avogadro = 6.023 × 10²³. The products of every chemical reaction are measured using the Avogadro number. 1 mole of atoms, molecules, or particles is equal to 6.023 x 1023. Calculating the number of molecules is as follows: mole number = quantity of material / mass of one mole.

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After a recrystallization, a pure substance will ideally appear as a network of?

Answers

When observed under a microscope, an impure substance is a non-homogeneous mixture in which some components have various colours or textures.

A process called recrystallization is used to clean an impure chemical in a solvent. The idea put forward here is that as temperature rises, most solids become more soluble. The process of fractional crystallisation is also known as recrystallization. A pure substance should ideally show up as a network of big crystals after recrystallization. If not, it might be beneficial to reheat the flask and let the contents cool more gradually. The appearance of the pure substances is homogenous A homogeneous combination (a pure substance) manifests as regularity. For example, a pure substance will have the same colour or texture on all sides, regardless of its size, when viewed. Steel and pure water are two examples of pure things.  

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A 5.25 g sample of metal at 49.5 °C gives off 10.4 J of energy until it is at 40.5 °C. What is the specific heat of the metal?​

Answers

The heat energy needed to change the 5.25  gram sample from a temperature of 49.5 to 40.5 °C is given 10.4  J. Then, the specific heat of the metal is 0.22 J/°C g.

What is calorimetry ?

Calorimetry is an analytical  technique used to determine the heat energy absorbed or released by  a system. The calorimetric equation relating the heat energy q with the mass of the substance, m, specific heat, c and temperature difference, ΔT is given as:

q = m c ΔT.

Given that the mass of the sample of iron = 5.25 g

temperature difference   ΔT = 49.5 - 40.5 = 9 °C

specific heat c = 0.450 J/ g °C.

The heat energy absorbed by the sample is calculated as follows:

10.4 J = 5.25 g ×  c J/ g °C × 9 °C.

Then,

c = 10.4 J / (5.25 g ×9 °C )

  = 0.22 J/ g °C

Therefore, the specific heat of the metal is 0.22 J/ g °C.

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What percentage of energy do data centers use?.

Answers

According to the U.S. Department of Energy, data centers use roughly 2% of the world’s energy.

Data centers are responsible for a significant portion of the world’s energy consumption.

According to the U.S. Department of Energy, data centers use roughly 2% of the world’s energy, with that number estimated to grow as more businesses and organizations move their operations to digital and cloud-based systems.

That may not seem like a lot, but when you consider the amount of energy used to power, cool, and maintain data centers, the overall cost to the environment can be quite significant.

Data centers use energy for various purposes, from powering hardware such as servers and storage systems, to cooling the centers with air conditioning.

Data centers also require energy for their backup systems, such as generators and UPSs.

In addition, data centers need energy for their networking systems and for running other applications and services, such as data analytics and machine learning.

All of these factors contribute to the overall energy consumption of data centers.

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29. Identify which is a property of nonmetals *
good insulator
good conductor of electricity
have luster
Omalleable
(2 Points)

Answers

Answer:

Omalleable

Explanation:

Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets. Conduction: They are poor conductors of heat and electricity. Luster: These have no metallic luster and do not reflect light.

According to the law of conservation of mass, which statement about chemical reactions is always true?(1 point)
Responses

The number of molecules in the reactants is the same as the number of molecules in the products.
The number of molecules in the reactants is the same as the number of molecules in the products.

The number of substances in the reactants is the same as the number substances in the products.
The number of substances in the reactants is the same as the number substances in the products.

The number of atoms of each element in the reactants is the same as the number of atoms of each element in the products.
The number of atoms of each element in the reactants is the same as the number of atoms of each element in the products.

The states of the substances in the reactants is the same as the states of the substances in the products.

Answers

According to the law of conservation of mass, Statement A. The number of atoms of each element in the reactants is the same as the number of atoms of each element in the products is true about chemical reactions.

What is the law of conservation of mass?

The law of conservation of mass is a model indicating that matter cannot be created or destroyed, but it can be changed from one form to another.

Therefore, with this data, we can see that the law of conservation of mass indicates that the total mass of the system or number of atoms remains constant over time.

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3. Write the balanced nuclear equation showing the decay of protactinium-238 to uranium-238

Answers

The chemical element protoactinium, often known as protoactinium, has the atomic number 91 and the symbol Pa. The balanced nuclear equation for the decay of protactinium-238 to uranium-238 is;

²³⁴Pa₉₁ --> ⁰e₋₁ + ²³⁴U₉₁

It is an actinide metal that is thick, silvery-gray, and easily interacts with oxygen, water vapor, and inorganic acids. Protactinium normally exists in the oxidation state +5, however, it can also adopt +4, +3, or even +2 states when it forms different chemical combinations.

Protactinium concentrations in the Earth's crust typically range from a few parts per trillion to a few parts per million in certain uraninite ore occurrences. There are currently no uses for protactinium other than scientific research due to its rarity, high radioactivity, and severe toxicity. For this reason, protactinium is primarily collected from spent nuclear fuel.

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The pathway to release of neurohormones follows a series of steps. Arrange the phrases from left to right to create the correct pathway for the neurohormone ADH from synthesis to release.1) ADH synthesis in supraoptic neurons2) Transport in tract in infundibulum3) Storage in axon termini in posterior pituitary4) Action potentials arrive at the axon terminals

Answers

The regular practise of driving a car to school would be the daily action that would pollute the environment.

This phrase is used to describe all human activities that harm the environment we live in by making it unsafe for the living things that inhabit it. The smoke from exhaust, which is brought on by the burning of gasoline, would be the main source of pollution. It has an adverse impact on the ecosystem because it taints the air, making it hazardous for humans to breathe. It can cause respiratory illnesses in people and other types of poisoning, which has an effect on our health By choosing another mode of transportation or by walking to school, this issue could be lessened.

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what is the limiting reagent when 16 grams of ch4 is reacted with 64 grams of o2? what remains after the reaction?

Answers

CH4 is limiting reagent and H20 remains after the reaction.

What is limiting reagent?

A limiting reagent is a reactant that entirely consumes itself before any other reactants are used up in a chemical reaction, hence restricting the amount of product that may be created. It can be found by comparing the proportions of each component in the reaction and its stoichiometry. Once the limiting reagent has been determined, the amount of product that can be generated can be computed using the reaction's stoichiometry.

[tex]CH_4+2O_2- > CO_2+2H_2O[/tex]  

number of moles of CH4= given mass/atomic mass

=> 16/16

so the number of moles of CH4 is 1

number of moles of O2 = 64/32

=2

so CH4 1 mole get vanished after the reaction and the gases like CO2 and O2 fly away so the limiting reagent is CH4  

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A sample of gas has a volume of 2.0 L at a temperature of 0°C. When the volume is
increased to 4.0 L at constant pressure, what is the new temperature?

Answers

This is an illustration of Boyle's law, which states that when mass and temperatures are held constant, a gas's volume changes inversely with pressure at 0.05 atm.

What is the fundamental idea behind Boyle's law?

According to Boyle's law, pressure and volume of a gas are always inverse proportion at a specific temperature. It states that the pressure inside the lung will drop as the size of the lungs expands during inhalation.

Which scenario best illustrates Boyle's Law?

When you inflate your bicycle tires, you can see how Boyle's Law is used in practice. The gasses inside a tire are squeezed and crammed closer together when air is pumped into it. This raises the gas's pressure, and It starts to press up against the tire walls.

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Which qualities of the ocean help it to absorb heat?

Answers

The qualities of the ocean help it to absorb heat is its surface area.

The ocean temperature in each area is different, this is because each region has a different amount of light intensity. Apart from light, geographical location, wind gusts, and cloud conditions can affect the ocean surface temperature which can change. while the deep ocean tends to have a stable temperature.

Water has the property of absorbing heat more easily than air because of the hydrogen bonds between water molecules. When heat is absorbed it will cause the hydrogen bonds to break and water molecules can move freely so that the surface temperature of the water rises. The more surface area of ​​ocean, the more heat absorbed by ocean.  This causes the surface area of ​​ocean to become one of the ocean qualities that helps absorb heat.

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Substances X,Y and Z can all act as oxidizing agents. In Colution X is Violet Y is Yello and Z is green. In the reactions they undergo thay are reduced to X- Y- and Z-, all of which are colorless. When a solution of Y is mixed with one containg X- ions the color changes from yellow to violet.
What Species Is oxidized? (X-)
Which Species is reduced(Y).
When a soulton of Y is mixed with one containing Z- ions, the solution remains yellow.
Is Y a better oxidizing agent than Z?
Is Y a better oxidizing agent than X?
Arrange X, Y, and Z in order of oxidizing strength from weakes to strongest.

Answers

1) X is reduced and Y is oxidized

2) Y is a better oxidizing agent than Z

3) X is a better oxidizing agents than Y

4) The order of the oxidizing abilities are;

X > Y > Z

What is an oxidizing agent?

An oxidizing agent is a chemical substance that accepts electrons from other substances, thereby oxidizing them. In this process, the oxidizing agent becomes reduced itself. Oxidation and reduction occur simultaneously and are known as redox reactions.

An oxidizing agent has the ability to transfer electrons to another substance, resulting in an increase in oxidation state (the number of electrons an atom has lost or gained) of the oxidized substance and a decrease in oxidation state of the oxidizing agent.

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How many moles are in 17.0 grams of h2o2? a. 0.284 mol h2o2 b. 0.385 mol h2o2 c. 0.500 mol h2o2 d. 0.730 mol h2o2

Answers

C) 0.500 moles of H2O2

in metals, the valence electrons are considered to be___

Answers

In metals, the valence electrons are considered to be shared by all surrounding atoms.

What is meant by electrons ?

A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound).One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.The nucleus of an atom is made up of electrons, protons, and neutrons together.The smallest elemental component of an atom, the electron has a negative charge.In a neutral atom, there are an equal number of protons and electrons.One electron and one proton are all that the hydrogen atom has.On the other hand, the uranium atom possesses 92 protons, which means 92 electrons.

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What is temperature?
A. Electromagnetic waves
B. The measure of an object's "hotness"
OC. A type of heat transfer
D. The energy transferred between objects

Answers

Answer:

the measure of an object s hotness

on the ph scale, which number has the highest concentration of hydrogen ions?

Answers

The Answer to this question is simply ZERO
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