A scientist in the city design a plan that will help produce the impact of future droughts that may occur in the area. Wich of the following would most likely be apart of the scientist plan

Answer:

36.2874 $

Explanation:

1 ton = 907.185 kilograms.

907.185 x 0.04 =

36.2874

-kiniwih426

According to unit conversion,cost of coal in dollars per ton if it costs $0.04 per kilogram is 80 dollars per ton.

Unit conversion is defined as a multi-step process which involves multiplication or a division operation by a numerical factor.The process of unit conversion requires selection of appropriate number of significant figures and the rounding off procedure.

It involves a conversion factor which is an expression for expressing the relationship between the two units.A conversion ratio always has value which equals to one which indicates that numerator and denominator have values which are expressed in different units.

First, we need to convert the cost per kilogram to dollars per ton. There are 2000 kilograms in a ton. So, the cost per ton is $0.04/kilogram × 2000 kilograms/ton = $80/ton.

So the answer is 80 dollars per ton.

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2 ml of the 50 mg/ml BSA stock solution is required to be added to the new vessel in order to make the final volume of 10 ml.

If we are not having 10 ml of a 10 mg/ml BSA solution, we then we are required to make it by adding some additional solvent or buffer to dilute the stock solution.

Let us assume that we are having some BSA stock solution, let's say 50 mg/ml, and we need 10 ml of 10 mg/ml BSA solution, we can use the following formula to calculate the required amount of stock solution and solvent:

C1V1 = C2V2

(Here, C1 is the concentration of the stock solution (50 mg/ml), V1 is the volume of the stock solution we need to use (which is unknown), C2 is the desired concentration (10 mg/ml), and V2 is the final volume we want to achieve (i.e. 10 ml).

Rearranging the formula above , we will be getting,

V1 = (C2V2)/C1

Substituting the values we have in the equation,  we will be getting,

V1 = (10 mg/ml x 10 ml)/50 mg/ml = 2 ml

Therefore it can be said that we are needed to take 2 ml of the 50 mg/ml BSA stock solution and add it to the new vessel. To make the final volume 10 ml, we need to add 8 ml of the appropriate solvent or buffer.

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Cementation during the diagenesis process reduces the porosity and permeability of rocks by filling the pore spaces between grains with mineral cements, impacting fluid flow and rock strength.

Cementation is a process in which minerals precipitate and fill the spaces between sediment grains, binding them together. This process occurs as pore fluids, such as groundwater, carry dissolved minerals that can precipitate and form a solid cementing material.

During diagenesis, cementation can significantly impact the permeability and porosity of rocks. The precipitation of mineral cements fills the pore spaces between grains, reducing the overall porosity of the rock. This reduction in porosity limits the amount of fluid that can flow through the rock and decreases its permeability.

The type of mineral cement formed during cementation can also influence the strength and durability of the rock. Common mineral cements include calcite, silica, and iron oxides, which can impart different properties to the rock.

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Answer:

sorry if this is wrong bt j would say rising sea levels

New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.

By taking bits of a single gene, scientists are using DNA barcoding to identify new species. If a portable hand-held scanning device can be developed, one ecologist says, it could “do for biodiversity what the printing press did for literacy. These skills involve observing natural phenomena, identifying different species of organisms, classifying them into categories, and mapping the data for conservation and management in the future. Scientists identify species by examining physical characteristics.

So we can conclude that: New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.

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Answer: possibly diffusion

Explanation:

all particles are in motion unless at a certain degree so they'd spread throughout the room diluting as they continue to spread out.

Using the periodic table the number of electrons is determined as;

Fluorine (F) has 5 electrons in 2p orbital.

Silicon (Si) has 2 electrons in 3p orbital.

Iron (Fe) has 6 electrons in 3d orbital.

Krypton (Kr) has 6 electrons in 4p orbital.

The number of electrons in each orbital or the electronic configuration can be determined by the Aufbau principle, along with other principles such as the Pauli exclusion principle and Hund's rule.

1. The atomic number of Fluorine is 9, which means it has 9 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, and 5 electrons are in the 2p orbital. Therefore, the number of 2p electrons in F is 5.

2. The atomic number of Silicon is 14, which means it has 14 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, and 2 electrons are in the 3s orbital. Therefore, the number of 3p electrons in Si is 2.

3. The atomic number of Iron is 26, which means it has 26 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, 2 electrons are in the 3s orbital, and 6 electrons are in the 3p orbital. Therefore, the number of 3d electrons in Fe is 6.

4. The atomic number of Krypton is 36, which means it has 36 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, 2 electrons are in the 3s orbital, 6 electrons are in the 3p orbital, 10 electrons are in the 3d orbital, and 2 electrons are in the 4s orbital. Therefore, the number of 4p electrons in Kr is 6.

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The mass of hydrogen reacted with nitrogen to give ammonia is 0.1 grams.

Mass of any substance will be calculated by using the moles as:

n = W/M, where

W = required mass

M = molar mass

Given chemical reaction is:

3H₂ + N₂ → 2NH₃

Moles of 0.575 g of NH₃ will be calculated as:

n = 0.575g / 17.03g/mol = 0.033 moles

From the stoichiometry of the reaction, it is clear that:

2 moles of NH₃ = produced by 3 moles of H₂

0.033 moles of NH₃ = produced by 3/2×0.033=0.0495 moles of H₂

Now we calculate the mass of hydrogen from the given moles and molar mass as:
W = (0.0495mol)(2.0158g/mol) = 0.09 grams = 0.10 grams

Hence, option (a) is correct i.e. 0.1 grams.

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No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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Answer:

Sublimation!

Explanation:

sublimation is when a solid turns right into a vapor/gas without first becoming a liquid. with ice, it happens when temperatures are low and pressure is high.

Answer:

18.53

Explanation:

just finished and passed

Answer:

Usually, the cells are round, elongated or spherical. There are also some cells which are long and pointed on both the ends. Such cells exhibit spindle shape. In some cases, the cells are very long.

Explanation:

Hope I helped! Brainliest plz!

This problem is providing us with the volume of nitric acid that is titrated with 0.18 L of 0.1-M sodium hydroxide and asks for the concentration of the acid. At the end, the result turns out to be 0.045M, according to the following.

In chemistry, acid-base titrations allow us to quantify the volume or concentration of an acid or base via the following equation:

\(M_AV_A=M_BV_B\)

Where the subscript A stands for the acid and B for the base; which means one can calculate any of the variables there by knowing the other three. This equation is based on the balanced neutralization chemical equation, which takes place between the acid and the base.

Thus, we can write the reaction between NaOH and HNO3 as:

\(HNO_3+NaOH\rightarrow NaNO_3+H_2O\)

In such a way, we can solve for the concentration of the acid as shown below:

\(M_A=\frac{M_BV_B}{V_A} \\\\M_A=\frac{0.1M*0.18L}{0.40L} \\\\M_A=0.045M\)

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Answer:

Lawrencium (Lr)

Explanation:

The element with the given electron configuration is Lawrencium (Lr), which has an atomic number of 103.

Answer:

C7H6O2

Explanation:

Let;

68.8% of Carbon represents 68.8g

4.95% of Hydrogen represents 4.95g

26.25% of Oxygen represent 26.25g

Next, we convert each gram value to mole value by dividing by their respective molar mass {C = 12, H = 1, O = 16}

C = 68.8/12 = 5.73 mol

H = 4.95/1 = 4.95 mol

O = 26.25/16 = 1.64 mol

Next, we divide each mole value by the smallest (1.64mol)

C = 5.73 ÷ 1.64 = 3.49

H = 4.95 ÷ 1.64 = 3.02

O = 1.64 ÷ 1.64 = 1

Next, we multiply each ratio by 2 to obtain our simplest whole number ratio (empirical formula)

C = 3.5 × 2 = 7

H = 3.02 × 2 = 6

O = 1 × 2 = 2

Hence, the ratio of C, H and O is 7:6:2 and the empirical formula of benzoic acid is C7H6O2

Answer: Mechanical Energy

Explanation:

    To produce electricity, a generator needs an input of mechanical energy. Mechanical energy is a combination of potential energy and kinetic energy. Generators use this to create electricity to power light bulbs, technological devices, and more!

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The following options correct : 1. A half-reaction shows the electrons gained by the reactants in a galvanic cell.

2. The overall process occurring in a galvanic cell includes both an oxidation and a reduction reaction.

3. The two parts are each known as half-reactions.

A dry cell is the battery which is made up of one or more electrochemical cells and convert the stored chemical energy in to the mechanical energy. the given all of the options are correct for the half reaction cell as :

1. In the galvanic cell the electrons are gained by the reactant is the half reaction cell.

2. The oxidation and the reduction reaction in the galvanic cell shows the occurring of overall process.

3. The half - reaction is the two parts of the overall reaction that is oxidation half - reaction  and the reduction half - reaction.

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The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are : s:2, p:6, d:10, and f:14.

According to their energies, electrons are arranged into groups called shells (labeled by the principle quantum number, n). A shell's average distance from the nucleus increases with its energy in general. Subshells are smaller groups of electrons within a shell. One subshell is present in the first shell, two subshells are present in the second shell, three subshells are present in the third shell, and so on.

The letters s, p, d, and f are used to identify each shell's subshells in alphabetical sequence. Thus, the first shell only contains one s subshell (designated 1s), the second shell has two subshells (named 2s and 2p), the third shell has three subshells (called 3s, 3p, and 3d), and so on. The maximum number of electrons that can be held by a subshell varies. Any s subshell can hold up to 2 electrons; p, 6; d, 10; and f, 14.

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The pH of 1. 0 L of the solution on addition of 30. 0 mL of 1. 0 M HCl to the original buffer solution will be 12.50.

The reaction that occurs when HCl is added to the buffer solution is:

HCl + NH₃ → NH₄⁺ + Cl⁻

The HCl reacts with NH₃ to form NH₄⁺ and Cl⁻. This will cause the concentration of NH₄⁺ in the buffer to increase and the concentration of NH₃ to decrease. However, since we started with a buffer solution, it will still be able to resist changes in pH.

To solve this problem, we will use the Henderson-Hasselbalch equation:

pH = pKb + log([NH₄⁺]/[NH₃])

where [NH₄⁺] is the concentration of the ammonium ion and [NH3] is the concentration of ammonia.

Calculate the moles of HCl added

The volume of HCl added is 30.0 mL = 0.0300 L. The concentration of HCl is 1.0 M, so the moles of HCl added are:

moles of HCl = concentration x volume = 1.0 M x 0.0300 L = 0.0300 moles

Calculate the new concentrations of NH₄⁺ and NH₃

The moles of NH₄⁺ and NH₃ in the original buffer solution can be calculated as:

moles of NH₄⁺ = 0.20 M x 1.0 L = 0.20 moles

moles of NH₃ = 0.50 M x 1.0 L = 0.50 moles

When HCl is added, it reacts with NH₃ to form NH₄⁺ and Cl⁻. The amount of NH₄⁺ produced is equal to the amount of HCl added, since the reaction is 1:1. Therefore, the new concentration of NH₄⁺ is:

[NH₄⁺] = moles of NH₄⁺ / (volume of buffer + volume of HCl added)

[NH₄⁺] = 0.20 moles / (1.0 L + 0.0300 L)

[NH₄⁺] = 0.196 M

The new concentration of NH₃ can be calculated using the buffer equation:

[NH₃] = Ka x [NH₄⁺] / [H⁺]

where Ka is the equilibrium constant for the reaction NH₄⁺ + H₂O → NH₃ + H₃O⁺, which is equal to the acid dissociation constant of NH₃, Kb. Since pKb is given as 4.75, we can calculate Kb:

Kb = 10^(-pKb) = \(10^{-4.75}\)  = 1.78 x 10⁻⁵

Substituting the values we have:

[NH3] = Kb x [NH₄⁺] / [H⁺]

[NH3] = 1.78 x 10⁻⁵ x 0.196 M / \(10^{-pH}\)

[NH3] = 3.49 x 10⁻⁶ / \(10^{-pH}\)

Calculate the new pH of the buffer

Substituting the values we have into the Henderson-Hasselbalch equation:

pH = pKb + log([NH₄⁺]/[NH₃])

pH = 4.75 + log(0.196 M / (3.49 x 10⁻⁶ / \(10^{-pH}\))))

Simplifying and solving for pH:

pH = 4.75 + log(5.61 x 10⁷) + log(\(10^{pH}\))

pH = 4.75 + 7.75 + pH

pH = 12.50

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The names of covalent compounds indicate the number of atoms present through the use of numerical prefixes. These prefixes specify the quantity of each element in the compound.

For example, the numerical prefix "di-" is used to indicate the presence of two atoms. Therefore, when a covalent compound has two atoms of an element, the prefix "di-" is added to the element's name in the compound's name.

To illustrate this, let's consider the compound carbon dioxide (CO2). In carbon dioxide, the element carbon is combined with two atoms of oxygen. The prefix "di-" is used before the name of the second element, oxygen, to indicate the presence of two oxygen atoms.

Another example is the compound dinitrogen tetroxide (N2O4). In this compound, two nitrogen atoms (indicated by the prefix "di-") are combined with four oxygen atoms. The prefix "tetra-" is used to specify the presence of four oxygen atoms.

Here are some common numerical prefixes used in covalent compound naming:

Mono-: Indicates the presence of one atom.

Di-: Indicates the presence of two atoms.

Tri-: Indicates the presence of three atoms.

Tetra-: Indicates the presence of four atoms.

Penta-: Indicates the presence of five atoms.

Hexa-: Indicates the presence of six atoms.

Hepta-: Indicates the presence of seven atoms.

Octa-: Indicates the presence of eight atoms.

Nona-: Indicates the presence of nine atoms.

Deca-: Indicates the presence of ten atoms.

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The conversion of 1 mole of pyruvate to 3 moles of CO₂ via the PDH reaction and Krebs cycle also yields 4 moles of NADH, 1 mole of FADH₂, and 1 mole of GTP.

The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle (TCA cycle), is a series of chemical reactions that occur in the mitochondria of eukaryotic cells and in the cytoplasm of prokaryotic cells. It is a key component of cellular respiration, which is the process by which cells produce energy in the form of ATP (adenosine triphosphate).

The Krebs cycle begins with the acetyl-CoA molecule, which is produced from the breakdown of carbohydrates, fats, and proteins. The acetyl-CoA molecule enters the Krebs cycle and combines with oxaloacetate to form citrate. Through a series of reactions, citrate is converted back into oxaloacetate, producing ATP, NADH, and FADH₂ in the process. These energy-rich molecules are then used in the electron transport chain to produce more ATP.

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Answer:

These are largely the result of human reliance on fossil fuels and heavy industry, but can also be due to the accumulation of waste, modern agriculture, and other man-made processes. The combustion of fossil fuels like coal, petroleum and other factory combustibles is a major cause of air pollution

During hyperventilation, the blood pH changes as hyperventilation will lower the CO₂ level in the blood, which decreases the H₃₀⁺ and increases the blood pH.

The condition in which a person breathes more rapidly than usual is known as hyperventilation. During stress or trauma, a person can start to hyperventilate. This leads to a rise in the volume of oxygen (O₂) in the blood and a decrease in the volume of carbon dioxide (CO₂).

This lowers the quantity of CO₂ dissolved in the bloodstream. The acid-base balance of the body is governed by the concentration of hydrogen ions (H⁺) in the blood. Blood pH refers to the balance of acids and bases in the bloodstream, which is critical for maintaining normal bodily function.In order to prevent fainting, a person who is hyperventilating may be instructed to breathe into a paper bag.

When a person breathes into a paper bag, they are inhaling the CO₂ that they exhaled previously, which aids in the restoration of normal CO₂ levels in the bloodstream and aids in the maintenance of a healthy pH balance of the blood.

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During stress or trauma, a person can start to hyperventilate. The person may then be instructed to breathe into a paper bag to avoid fainting. The correct option among the given options is "Hyperventilation will lower the CO2 level in the blood, which decreases the H30+ and increases the blood pH".

During stress or trauma, a person can start to hyperventilate. Hyperventilation is a state of rapid breathing where a person breathes faster than the normal rate. As a result of hyperventilation, the concentration of carbon dioxide (CO2) in the blood decreases, which reduces the level of H+ ions and increases pH. Hyperventilation will lower the CO2 level in the blood, which decreases the H30+ and increases the blood pH. This is because

CO2(g) + 2H2O(l) -- H30+ (aq) + HCO3- (aq)

Hyperventilation decreases the concentration of CO2 in the blood, which leads to the reaction shifting to the left. This results in a decrease in the concentration of H3O+ and an increase in pH. As a result, the blood becomes more alkaline (basic) when a person hyperventilates.

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Answer:

physical change

Explanation:

it doesnt change it chemically

Answer:

Ripping paper is physical

Explanation:

The way you know if it is physical or not is does it change physically, any physical change

No chemical changes occurred because the chemical matter didn't change nor did the actual object, it's not like the paper turned into a hotdog so it would be physical (if that makes any sense ;))

Answer:

b i think

Explanation:

Answer:

See explanation

Explanation:

The question is incomplete but i will try to help you the much i can.

You see, we already know about the fact that energy is transferred from a hotter object to a cooler object. This is largely because of the collision of the molecules of a hotter body with the molecules of a cooler body ultimately leading to a transfer of energy from the hotter body to the cooler body. This now makes the temperature of the cooler body to rise.

Keep in mind that temperature is a measure of the average kinetic energy of the molecules in a body.

Hence, since the water is at a higher temperature, energy is transferred from the water to the hand and the temperature of the hand rises accordingly.

Answer:

A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [Ne] for the 1s22s22p6 part of the configuration. Sodium's noble gas configuration becomes [Ne]3s1. That is the answer.

Explanation:

Brainliest Please.

A Punnett square is a tool used in genetics to predict the possible outcomes of a cross between two individuals. It is named after the geneticist Reginald Punnett who developed it in the early 20th century.

The Punnett square is a grid that represents the possible combinations of alleles from the parents. The alleles are represented by letters, with uppercase letters representing dominant alleles and lowercase letters representing recessive alleles. Each parent's alleles are written along the top and left-hand side of the grid, and the possible offspring genotypes are listed in the boxes inside the grid.

The Punnett square can also be used to determine the probabilities of each genotype and phenotype occurring in the offspring.

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