The water in a fishery became polluted when toxic waste was dumped into its pond, causing the fish population to substantially decline. The percents of fish that survived are recorded in the table.
Day 1 2 3 4 5
% Survival 79 55 38 31 19


a) What is the order of the reaction live fish ------> dead fish?

b) What is the rate constant?

c) If the fish continue to die at this rate, how many fish will be alive after 10 days?

Answer:

atomic weight

Explanation:

its atomic weight becuase if it a number on the peroidic table its going to be the atomic weight

The initial pressure exerted on the balloon was 8 atmospheres.

To find the initial pressure exerted on the balloon, we can use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when temperature is constant. The formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 represent the initial pressure and volume, and P2 and V2 represent the final pressure and volume.

In this case, we are given that the initial volume (V1) is 14 L and the final volume (V2) is double the initial volume (2 x V1). We are also given that the final pressure (P2) is 4 atmospheres. We need to find the initial pressure (P1).

Using the formula P1V1 = P2V2 and plugging in the given values, we have:

P1 * 14 = 4 * (2 * 14)

P1 * 14 = 4 * 28

P1 * 14 = 112

To isolate P1, we divide both sides of the equation by 14:

P1 = 112 / 14

P1 = 8

It's important to note that the unit of pressure in this case is atmospheres, as stated in the question. If the pressure unit had been different, appropriate unit conversions would have been necessary.

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The mass of the ammonia that is required is  258 g.

The quantitative correlations between the reactants and products in a chemical reaction are the focus of the chemistry subfield known as stoichiometry.

We have to know that;

1 mole of CO2 produces 1 mole of urea

2.2 moles of CO2 produces 2.2 urea

Given that the number of moles of urea = 455 g/60 g/mol

= 7.58 moles

Now;

2 moles of NH3 produces 1 mole of urea

x moles of NH3 produces 7.58 moles of urea

x = 7.58 * 2/1

= 15.16 moles

Mass of the ammonia =  15.16 moles * 17 g/mol

= 258 g

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According to the forces of attraction freezing point and boiling point of water are different and are not related to  strength of electrostatic forces.

Forces of attraction is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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The total pressure of the gases in the container is 1.000 atm at RTP.

To calculate the total pressure of the gases in the container, we need to use the ideal gas law, which states:

PV = nRT

where P is the pressure of the gas, V is the volume of the container, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.

At RTP (standard temperature and pressure), the temperature is 273 K and the pressure is 1 atm. The volume of the container is not given, but since it is rigid, we can assume it is constant.

To find the total pressure, we need to first calculate the partial pressures of each gas using the mole fraction of each gas. The mole fraction is the fraction of the total moles of gas that are made up of each gas.

Let's assume that we have 100 moles of gas in the container. Then, we have:

20.0 moles of helium (20.0% of 100 moles)

20.0 moles of neon (20.0% of 100 moles)

60.0 moles of argon (60.0% of 100 moles)

The total moles of gas is then:

n = 20.0 moles + 20.0 moles + 60.0 moles = 100 moles

The mole fraction of helium is:

X(He) = n(He) / n = 20.0 moles / 100 moles = 0.200

The mole fraction of neon is:

X(Ne) = n(Ne) / n = 20.0 moles / 100 moles = 0.200

The mole fraction of argon is:

X(Ar) = n(Ar) / n = 60.0 moles / 100 moles = 0.600

The partial pressure of helium is:

P(He) = X(He) * P(total) = 0.200 * 1 atm = 0.200 atm

The partial pressure of neon is:

P(Ne) = X(Ne) * P(total) = 0.200 * 1 atm = 0.200 atm

The partial pressure of argon is:

P(Ar) = X(Ar) * P(total) = 0.600 * 1 atm = 0.600 atm

The total pressure is the sum of the partial pressures:

P(total) = P(He) + P(Ne) + P(Ar) = 0.200 atm + 0.200 atm + 0.600 atm = 1.000 atm

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Answer:

its sodium hydroxide

Explanation:

Answer:

O CaCl₂

Explanation:

The compound most likely to contain an ionic bond is CaCl₂ because it is the only specie with a metal and non-metal.

The metal here is Ca and non-metal is Cl.

Answer:

B .point the test tube away from others

Explanation:

Well in science your supposed to keep it away from you and others so the aroma doesnt harm your nose or anyone eles´s nose

Hoped I helped -\

Sleepy~

An electron has a negative charge.

The charge of an electron is a fundamental property of the particle, and it is denoted by the symbol "e." The magnitude of the charge of an electron is approximately 1.602 × 10^-19 coulombs (C). This value is considered the elementary charge and is used as a reference for other charges. The charge of an electron plays a significant role in determining the behavior and interactions of atoms and molecules. It is opposite in sign to the charge of a proton, which is positive. The electron's charge allows it to interact with other charged particles, such as protons and ions, through electrostatic forces. Electrons are subatomic particles that orbit the nucleus of an atom in specific energy levels or orbitals. They contribute to the overall stability and chemical properties of atoms and participate in chemical bonding and reactions. The movement of electrons between atoms is what enables the formation of chemical bonds and the sharing or transfer of electrons to create ions. In summary, the charge of an electron is negative, and it plays a fundamental role in the structure and behavior of atoms and molecules.

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Answer:

Leeunwenhoek

Explanation:

Anton Von Leeunwenhoek was the first scientist to observe live cells and in greater details. He described spirogyra in the mid 15th century.

The correct statement is one person performs the work in less time than the other.

Power is a measure of the rate at which work is done. It is calculated by dividing the amount of work done by the time taken to do the work.

P = E/t

where;

Therefore, if two people are moving boxes into a moving truck, the person who moves more boxes in a shorter amount of time has more power than the other person.

Thus, the correct statement will be "One person performs the work in less time than the other" which best explains how one can have more power than the other.

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Answer:

Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Ca^2 , Al^3 ,I^-,S^2-

Explanation:

1)Formula of calcium iodide:

The compound of Ca^2+ and I^-1:

\(CaI_2\)

2) Formula of calcium sulfide:

\(CaS\)

3) Formula of aluminum iodide:

\(AlI_3\)

4) Formul aluminum sulfide:

\(Al_2S_3\)

These are the four ionic compounds that are formed.

We cannot see it its so small

Also yes it matches your hypothesis

Answer: with enough heat, pressure, and time, the original sedimentary or igneous rock is changed to metamorphic rock.

Explanation:

If deionized water is used instead of the test iron (III) chloride solution, the reported values of the absorbance of the solutions will be highly increased.

A spectrometer is an instrument that measures the concentration of a colored substance as a function of its absorbance. Before a measurement is taken, the instrument is first calibrated using different concentrations of the test solution.

If deionized water is used instead of the test iron (III) chloride solution, the reported values of the absorbance of the solutions will be highly increased.

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Answer:

Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place.

Explanation:

hope this helps

Answer:

I'd say 624.2^3 inches.

Explanation:

Answer:

x/2

Explanation:

X = 2 molecules of H2

For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.

I hope I'm understanding this question right.

According to the information provided, there are 8.601024 8.60 10 -24 ammonia molecules in a solution of water and ammonia (NH3 N H 3). The total number of hydrogen atoms inside the solution is 1.06 1026.

Water has the chemical formula H2O, which stands for two moles of hydrogen and one mole for oxygen. Consequently, there are two moles of hydrogen in a single water molecule. 18 g if water will have 1 x 12.046 1023 = 12.046 1023 hydrogen atoms.

According to Avogadro's number, there's many 6.022 x 1023 water molecules in a mole of water. After determining that a drop of water has 0.002775 moles, we can now calculate how so many molecules are present in it: molecules inside a water drop Equal (6.022 x 1023 particles) x 0.002275 moles.

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The main advantage of the Kelvin scale is that all the temperatures on this scale are positive

The Kelvin scale is a temperature scale that has no negative values.

kelvin scale is a scale of temperature. It was Lord William Thomson Kelvin who discovered Kelvin's scale of temperature.

The melting point of ice on the Kelvin scale is 273 K.

The boiling point of water on the Kelvin scale is 373 K.

The SI unit for measuring temperature is Kelvin which is denoted by the symbol ‘K’.

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Explanation:

chemical to add to swimming pools in order

to make the water safer. She mixed two solid

substances together in a sealed container.

The diagram above shows the repeating

groups of atoms that make up the two

starting substances.

After mixing, Tiana found two liquid

substances in the sealed container.

(Nothing had escaped.) Which of the

diagrams to the left shows the repeating

groups of atoms that make up the ending

substances?

Answer:

Where are the pictures????

Explanation:

When 3-methylcyclopentanone is reacted with Tollens' reagent, it undergoes oxidation to form a carboxylate anion.

Here's the structural formula for the major organic anion formed:

\(O^- O=C(CH_3)CH_2CH_2CH_2^-\)

| |

\(H_3C---C---CH_2CH_2CH_2CH_3 + Ag(NH_3)^{2+} + OH^-\) → \(Ag(s) + H_2O + O=C(CH_3)CH_2CH_2CH_2^-\)

A Tollens' test, also known as a silver-mirror test, is a chemical test used to determine whether a carbonyl compound is present in a given sample. When a carbonyl compound is combined with a silver ammonia complex, it reduces the silver cation to metallic silver, forming a silver mirror on the surface of the container.

If no reaction occurs, the organic starting material, 3-methylcyclopentanone, would simply be:

O

|| \(CH_3\)

\(C---C---CH_2CH_2CH_2CH_3\)

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Answer:

The correct answer is 1.498.

Explanation:

Based on the given information, the volume of NaOH needed for the titration is 14.53 ml, and the concentration of NaOH given is 0.1031 M.

The volume of NaOH, that is, 14.53 ml can also be written as 14.53 × 10⁻³ L.

The concentration of NaOH, that is, 0.1031 M can also be written as 0.1031 moles/Litre.

Molarity (M) is determined as,

M = No of moles/Volume in litres

No of moles = Molarity × Litres

No of moles = 0.1031 moles/Litres × 14.53 × 10⁻³ L

No of moles = 1.498 × 10⁻³ L

Now, number of millimoles = 1.498 × 10⁻³ L × 1000 (millimoles = moles × 1000)

Number of millimoles = 1.498

The number of millimoles of NaOH required for the titration is 1.50 mmol

From the question,

We are to determine the number of millimoles of NaOH required for the titration

From the given information

The titration required 14.53 mL of 0.1031 M NaOH solution

From the formula

Number of moles = Concentration × Volume

Concentration of the NaOH = 0.1031 M

Volume of the NaOH = 14.53 mL

∴ Number of millimoles of NaOH required = 0.1031 × 14.53

Number of millimoles of NaOH required = 1.498043 mmol

Number of millimoles of NaOH required ≅ 1.50 mmol

Hence, the number of millimoles of NaOH required for the titration is 1.50 mmol

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In this equation, two molecules of aluminum hydroxide react with three molecules of sulfuric acid to produce one molecule of aluminum sulfate and six molecules of water.

What is Molecules?

A molecule is a group of two or more atoms that are chemically bonded together. Atoms can combine to form molecules by sharing electrons between them, forming a covalent bond. Molecules can also be formed by the attraction between oppositely charged ions, known as ionic bonding.

Molecules can be made up of atoms of the same element or atoms of different elements. For example, oxygen gas (O2) is a molecule made up of two oxygen atoms, while water (H2O) is a molecule made up of two hydrogen atoms and one oxygen atom.

The balanced chemical equation for the reaction between aluminum hydroxide and sulfuric acid is:

2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O

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Answer:

1) Combustion

2)Synthesis

3)Single Replacement

4)Decomposition

5)Double Replacement

6)Synthesis

7)Double Replacement

8)Single Replacement

9)Combustion

10)Decomposition

Explanation:

Remeber, decomposisition is breaking things apart, synthesis is building them, cobusion will always make water and CO2 and will always burn O2, single replacemnt will have 1 thing replaced (single) and double replacement will have 2 things replaced (double).

Hope this helps!

The net ionic equation of the reaction is as follows:

4 Al3+(aq) + 12 NO3-(aq) + 3 Ag(s) = 4 Al(s) + 12 Ag+(aq) + 12 NO3-(aq)

Ions which remain in their ground state and do not take part in the reaction are called spectator ions. The net ionic equation cancels out these ions, which are present on both the reactant and product sides of the equation.

Spectator ions, which can be found on both the reactant and product sides, but are not included in the finished reaction from the net ionic equation. The \(NO^3^-\) ions are spectator ions in this example, thus taking them out of the equation. The net ionic equation makes up the rest of the species.

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Answer:

synthesis reaction

Explanation:

because the hydrogen and oxygen are coming together.

have a good day friend :)

The concentration in mol L-l (M) = 0.717

Given

12% solution of tetrahydrate magnesium chloride (MgCl₂)

Required

The concentration

Solution

Tetrahydrate magnesium chloride (MgCl₂)⇒MgCl₂.4H₂O

MW = Ar Mg+2. Ar Cl+8. Ar H + 4. Ar O

MW=24.31 + 2 x 35.45 + 8 x 1.01 + 4 x 16

MW=24.31+70.9+8.08+64

MW=167.29 g/mol

12% solution = 12 % m/v = 12 g in 100 ml solution

For 1 L solution :

\(\tt \dfrac{1}{0.1}\times 12~g=120~g\)

The concentration in g/L = 120 g/L

Convert grams to moles :

\(\tt mol=\dfrac{120}{167.29}=0.717\)

The stress that would increase the yield of the products is option (A) - Increasing the pressure.

According to Le-Chatelier’s principle, if a system in equilibrium is subjected to a change in pressure, temperature, or the number of moles of a substance, then a net reaction will take place that moves the system to a new equilibrium state.

Pressure changes do not markedly affect solid or liquid phases. However, pressure strongly impacts the gas phase. Le Chatelier’s principle implies that a pressure increase shifts an equilibrium to the side of the reaction with fewer moles of gas, while a pressure decrease shifts an equilibrium to the side of the reaction with more moles of gas.

So, increasing the pressure would increase the yield of products (shift right). Decreasing the temperature, increasing the volume and decreasing the reactant concentration would shift the reaction towards left side.

In summary, increasing the pressure would increase the yield of products (shift right).

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