Hurry I need Now!!!In which biome would the climax species be reached most quickly following a fire?
A Taiga
B desert
C Grassland
D. deciduous forest
E tropical rain forest

Answer:

3. Parts are uniformly (evenly) distributed.

Explanation:

Mixture can be defined as a combination of two or more substances which are present in varied proportion and can be visibly seen by with our naked eyes.

In Science, there are two (2) main types of mixture and these are;

I. A homogeneous mixture: it can be defined as any liquid, solid or gaseous mixture which has an identical or uniform composition and properties throughout any given sample of the mixture. In Chemistry, all solutions are considered to be a homogeneous mixture. For example, aqueous hydrogen chloride is a homogeneous mixture of water and hydrogen chloride.

This ultimately implies that, in a homogeneous mixture, parts are uniformly (evenly) distributed.

II. A heterogenous mixture: it can be defined as any mixture which has a different or non-uniform composition and properties throughout any given sample of the mixture. This ultimately implies that, the constituents of a heterogenous mixture always remain separate in the sample and as such comprises of two or more phases.

For example, a mixture of sand and coffee is simply a heterogenous mixture and can easily be separated into their various components.

The boiling point of the 0.53 m aqueous solution of LiBr, given the bp as 100 °C, is 100.27 °C

First, we shall obtain the boiling point elevation. This is shown below:

ΔTb = kb × m

ΔTb = 0.512 × 0.53

ΔTb = 0.27 °C

Finally, we shall obtain the boiling point of the solution. This shown below:

Boiling point of solution = bp + ΔTb

Boiling point of solution = 100 + 0.27

Boiling point of solution = 100.27 °C

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Answer: 100.54

Explanation:

Acellus

Answer:

24

Explanation:

the total of any 2 sides must be larger than the 3rd side. x is the 3rd side.

8 + x > 16

x > 8

16 + x > 8

x > -8

8 + 16 > x

24>x

x < 24

the second inequality tells us nothing as sides must be positive.

the third side must be between 8 and 24

Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

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The one that does not demonstrates the law of conservation of matter would be the third option: \(2NO_2 + H_2O -- > HNO_3 + HNO_2\)

It is a law that explains that matters are conserved during the course of chemical reactions. They can neither be destroyed nor created.

Thus, the number of moles of the species in a reaction remains the same before and after the reaction.

Thus, an equation that demonstrates the law of conservation of matter will be balanced in terms of the number of moles of species.

The only equation, in this case, is \(2NO_2 + H_2O -- > HNO_3 + HNO_2\)

There are 3 oxygen species on the reactant while 5 are present on the product side.

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Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

Answer:

10ml

Explanation:

is this correct if wrong comment me

Answer:

kilo means one thousand

Explanation:

Seeing as there are 1000 metres in one kilometre

Knowing that 1,000 meters are in 1 kilometer, The prefix kilo means 1000 or 1 kilogram (kg).

The metric system is the system that uses gram, liter, and meter as the base unit for measuring the distance, volume, and length of any object or entity.

The metric system was started in France in 1970. There are common seven units in the metric system. The three main base units are gram, liter, and meter.

A liter is used to measure the Volume. Grams are used to measuring the quantity of a solid item. Meter is used to measure the distance or length of anything.

The kilogram is the base unit for measuring the quantity of any solid item, such as rice, and 1 kg of rice is the quantity of rice.

Thus, the prefix kilo means 1000 or 1 kilogram (kg).

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The two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

A chemical compound is a substance made of numerous similar molecules (or molecular entities) joined by chemical bonds and comprising atoms from various chemical elements. Therefore, a molecule made up of only one type of atom is not a compound. Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be broken or new ones created during this process.

sample 1 = mass of lead / mass of oxygen = 12.92g/2g = 6.46 .

sample 2 = mass of lead/ mass of oxygen = 34.27 - 14.39/14.39 = 1.38 .

so, the ratios are not the same.

Hence, the two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

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Answer:

If n = 4, then the possible values of 1 and m depend on the equation or expression being used. Without more information, it is impossible to determine what the possible values of 1 and m might be. Can you please provide more context or information about the problem you are trying to solve?

Answer:

biochemist is both life science and a chemical . it explores the chemistry of the living organisms and the molecular basis for the changes occurring in the living organisms. it uses the method of chemistry . BIOCHEMIST has become the foundation for understanding all biological processes

The atomic mass of Cl-37 is 37.966 amu.

The correct answer to the given question is option A.

Isotopes are atoms of the same element with different numbers of neutrons. They have the same number of protons, but they have a different number of neutrons, giving them different mass numbers.

Therefore, they have the same number of electrons, so they have similar chemical properties. Isotopes are known to occur naturally in a large number of elements.

Average Atomic Mass: The average atomic mass of an element is the sum of the atomic masses of the isotopes multiplied by their relative abundance. It is expressed in atomic mass units (amu).

It is given by the formula: AAM = (isotope 1 mass x fraction 1) + (isotope 2 mass x fraction 2) + ... (isotope n mass x fraction n) Where:isotope mass is the atomic mass of the isotope,fraction is the fraction or percentage of the isotope in the sample.

Atomic Mass of Chlorine: Isotopes of chlorine include Cl-35 and Cl-37, and they have atomic masses of 34.968 and 36.966 amu, respectively. The relative abundances of Cl-35 and Cl-37 are 75.782% and 24.22%, respectively.

The atomic mass of chlorine is therefore 35.453 amu.

The atomic mass of Cl-37 can be calculated as follows:

Atomic mass of Cl-37 = (34.968 amu x 0.2422) + (36.966 amu x 0.75782) = 8.459696 + 28.014905 = 36.474601 amu Rounded to three significant figures, the atomic mass of Cl-37 is 37.966 amu.

Thus, the correct option is A. 37.966 amu.

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Answer:Favorable

Explanation:um I know That it is Favorable sorry!

Answer:

d.-379 cal/mol

Explanation:

ΔG = ΔG⁰ + RT ln K

for equilibrium ΔG = 0

ΔG⁰ + RT ln K =0

ΔG⁰   =  -  RT ln K

PG ⇒ PEP

K = [ PEP ] / [ PG ]

= .68 / .32

= 2.125

ΔG⁰   =   - 1.987 x 273 x  ln 2.125

= - 409 Cal / mole

Option d is the nearest answer .

Answer:

Explanation:

I forgot

1. Rate law - A chemical reaction's rate and the concentrations of the reactants involved are correlated by an expression known as the rate law, commonly referred to as the rate equation.

Step (1) is the rate-determining step because it is the slow step, it determines the reaction's overall pace; therefore,

Rate law= K [H₂O₂]  [I⁻]

2. order of reaction = second order

The Order of Reaction describes how the rate of a reaction depends on the concentration of each component. As a result, the rate of a first-order reaction depends on the concentration of a single species.

3. First step is the rate determining step because it is the slow step. Slow step determines the rate.

The rate-determining step is the one that establishes the speed (rate) of the complete chemical reaction.

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Your question is incomplete. For missing part refer the image below.

When fossil fuels burn, several forms of energy are produced, including:

Heat energy: The primary form of energy released during fossil fuel combustion is heat. Fossil fuels contain chemical energy stored for millions of years, and when they burn, this energy is released in the form of heat. The heat energy can be harnessed for various purposes, such as heating buildings or generating steam to drive turbines.

Light energy: Burning fossil fuels can also produce light energy in the form of flames or glowing embers. This light energy is a byproduct of combustion.

Mechanical energy: Heat generated by burning fossil fuels can be converted into mechanical energy. This is typically achieved by using heat to produce steam, which drives a turbine connected to a generator. The rotating turbine converts the heat energy into mechanical energy, which is further transformed into electrical energy.

Electrical energy: Through the process described above, burning fossil fuels can ultimately generate electrical energy. The mechanical energy produced by the turbine is converted into electrical energy by the generator. Electrical energy can power various devices, appliances, industries, and infrastructure.

It's critical to note that while burning fossil fuels can produce useful forms of energy, it also results in the release of carbon dioxide and other greenhouse gases. This contributes to climate change and environmental concerns. As a result, there is a global shift towards cleaner and renewable energy sources to mitigate these negative impacts.

Answer:

There are 1.205x10²³ particles in 0.2 moles.

Explanation:

In order to convert from moles to number of particles we need to use Avogadro's number, which states the number of particles contained in 1 mol:

Thus, there are 1.205x10²³ particles in 0.2 moles.

Answer:

the rate of cooling decreases

1. Arrows leading from the environment to the foil: Draw arrows to represent heat transmission from the environment (or hot environment) to the foil. It shows how the foil absorbs heat from its surroundings.

2. Draw arrows to show the transfer of heat from foil to ice. This demonstrates how heat from the foil is transferred to the ice, causing the ice to melt.

The direction of the arrows should represent the passage of heat, indicating that heat first transfers from the environment to the foil and then from the foil to the ice. Since metals, such as foil, are good conductors of heat, heat can easily pass through them and into colder substances such as ice, causing them to melt.

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The balanced chemical equation for the reaction between strontium and oxygen can be written as follows: 2 Sr (s) + \(O_2\)(g) → 2 SrO (s).

In this equation, solid strontium (Sr) reacts with gaseous oxygen (\(O_2\)) to produce solid strontium oxide (SrO).

To determine the mass of product expected to form in this reaction, we need to consider the molar ratio between strontium and strontium oxide. From the balanced equation, we can see that 2 moles of strontium react to produce 2 moles of strontium oxide.

The molar mass of strontium (Sr) is 87.62 g/mol, and the molar mass of strontium oxide (SrO) is 119.62 g/mol. Since the molar ratio is 1:1 between strontium and strontium oxide, the mass of strontium oxide formed will be equal to the mass of strontium used.

In this case, the student added 4.93 g of strontium to the crucible. Therefore, the expected mass of strontium oxide formed will also be 4.93 g.

It's important to note that this calculation assumes that the reaction proceeds to completion, meaning that all of the strontium reacts with oxygen. In actual laboratory conditions, the yield of the reaction may be less than 100% due to factors such as incomplete reaction, side reactions, or product loss.

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The half-life of Po-210 is 140 days. If the initial mass of the sample is 5 kg, 3.5g will remain after 280 days.

Chemical kinetics is a subfield of physical chemistry that studies the speeds of chemical processes. The rate of the reaction may be used to classify it as quick, moderate, or sluggish. Reaction mechanism also enables us to study the effects of temperature and catalyst on reaction rate and rate constant. It informs us about reaction processes and enables us to apply particular rate constants to certain mechanistic stages.

The rate law for first order kinetics is

K=(2.303/T)×log(a/a-x)

half life=0.693/K

Where

k - rate constant

t - time passed by the sample

a - initial amount of the reactant

a-x - amount left after the decay process

K=0.693/half life

K=0.693/140

=0.086

0.086=(2.303/ 280)×log( 5 /a-x)

0.086=0.07×log( 136/a-x)

1.22=log( 136/a-x)

136/a-x=16.5

a-x=3.5g

Therefore, 3.5g will be left after 280 days.

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The mass, in kilograms, of aluminum sulfate required to produce 35.85 kilograms of lead (IV) sulfate would be 13.48 kilograms.

The equation of the reaction is as follows:

\(3Pb(CH_3COO)_2 + Al_2(SO_4)_3 -- > 3Pb(SO_4) + 2Al(CH_3COO)_3\)

Mole ratio of aluminum sulfate and lead (IV) sulfate = 1:3

Mole of 35.85 kilograms of lead (IV) sulfate = 35.85x1000/303.26 = 118.2154 moles.

Equivalent moles of aluminum sulfate = 118.2154/3 = 39.41 moles

Mass of 39.41 moles of aluminum sulfate = 39.41 x 342.15 = 13484 grams

13484 grams = 13484/1000 = 13.48 kg

In other words, the mass of aluminum sulfate required to produce 35.85 kilograms of leave (IV) sulfate is 13.48 kilograms.

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Answer:

Percent Composition of 41K = 6.7302%

Explanation:

The explination is in the image.

The percentage composition of 41K isotope of potassium according to the given data is 6.7302 percent.

Given that the atomic masses of the potassium isotopes are:

mass of 39K = 38.9637amu

mass of 40K = 39.9639amu

mass of 41K = 40.9618amu

and the percentages are:

percentage of 39K = 93.2581%

percentage of 40K =  0.0117%

percentage of 41K = x

Given average mass of potassium = 39.0983amu

sum (mass of isotopes × percentage abundance) =  average mass

38.9637 × 93.2581% +  39.9639 ×  0.0117%  + 40.9618 × x = 39.0983

x = 6.7302%

So the percentage composition of 41K is 6.7302%

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Answer: 67.5

Explanation:

Brainliest pls

Answer:

Advantages of Renewable Energy Resources

Explanation:Because renewable energies are not burned like fossil fuels, they do not release pollutants into the atmosphere and provide a cleaner, healthier environment. Sources of renewable energy are found everywhere in the world and cannot be depleted.

Answer: b!

Explanation: