Explain how most fish reproduce similarly?

According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.

There are total three laws of newtons, first law of newtons, second law of newton and third law of newton. Therefore, action and reaction forces are described by newtons  third law of motion.

Newton's first law is also called law of inertia. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Third law states that for every action there is an equal and opposite reaction. Third law is applicable in many field of physics. The third law is applicable in the running of rockets. The third law is also used by swimmers during swimming in pool.

Therefore, action and reaction forces are described by newtons  third law of motion.

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In the given chemical equation:

2MnO4^-(aq) + 16H^+(aq) + 5Sn^2+(aq) → 2MnO2^-(aq) + 8H2O(aq) + 5Sn^4+(aq) The oxidation number of manganese (Mn) changes from +7 in MnO4^- to +4 in MnO2^-.

MnO4^- is a polyatomic ion known as permanganate ion, which has a charge of -1. The total charge on the ion is balanced by the sum of the oxidation states of its constituent atoms. Since there are four oxygen atoms with an oxidation state of -2 each, the oxidation state of Mn in MnO4^- can be calculated as follows:

-1 = oxidation state of Mn + (-2) x 4

-1 = oxidation state of Mn - 8

oxidation state of Mn = +7

Similarly, MnO2^- is a polyatomic ion known as manganate ion, which has a charge of -2. The total charge on the ion is balanced by the sum of the oxidation states of its constituent atoms. Since there are two oxygen atoms with an oxidation state of -2 each, the oxidation state of Mn in MnO2^- can be calculated as follows:

-2 = oxidation state of Mn + (-2) x 2

-2 = oxidation state of Mn - 4

oxidation state of Mn = +4

Therefore, the oxidation number of manganese changes from +7 in MnO4^- to +4 in MnO2^- in the given chemical equation.

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Answer:

D. Radar uses radio, and the siren uses sound waves.

Explanation:

The main difference between the siren passing by and the radar is that radar uses radio waves and siren uses sound waves.

A mole of Chromebooks lined up end to end would encircle the moon approximately 1.59 x 10^16 times.

The length of a standard-size school Chromebook is 11.6 inches.

To determine the number of times a mole of Chromebooks lined up end to end would encircle the moon, we need to first convert the length of one Chromebook into meters and then multiply that by Avogadro's number, which is the number of particles in a mole.

One Chromebook is 11.6 inches long, which is approximately 0.2946 meters. Avogadro's number is 6.022 x 10^23.

So, the total length of a mole of Chromebooks lined up end to end would be:

0.2946 meters * 6.022 x 10^23 = 1.75 x 10^24 meters

The circumference of the moon is approximately 10,917 kilometers, which is equal to 10,917,000 meters.

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The molarity of the solution is 0.411 M.

given that :

volume = 40.30 mL = 0.040 L

molarity = 0.1823 M

moles = molarity × volume

          = 0.1823 × 0.040

          = 0.0072 mol

at the second equivalence point means it is diprotic. the equation is given as :

H₂A  +   2OH⁻   ----->   H₂O  +   HA⁻

H₂A  --->  2H⁺ + A⁻

molarity of solution = 2 × 0.0072 / 0.035 L

                                = 0.411 M

Thus, a 35.00-ml sample of solution required 40.30 ml of 0.1823 m solution to titrate it to the second equivalence point. the molarity of the solution is  0.411 M.

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Answer:

High salinity, low temperature.

Explanation:

A lot of salt is left behind. This leads to water with  very high salinity

The salinity of the water increases as more salt is dissolved in it. High temperature, density and salinity produce the most dense water.

Salinity influences the physical properties of water, such as density and heat capacity, together with temperature and pressure.

When two water samples of the same volume are compared, the water sample with the higher salinity will have more mass and be more dense.

The ocean's salinity is raised by both sea ice production and ocean water evaporation. However, processes that reduce salinity, such as the ongoing inflow of fresh water from rivers, precipitation of rain and snow, and melting of ice, constantly balance out these "salinity rising" causes.

Thus, salinity ,density and high temperature produce the water dense.

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Approximately

60

g of

C

6

H

12

O

6

.

Explanation:

We have the balanced equation (without state symbols):

6

H

2

O

+

6

C

O

2

→

C

6

H

12

O

6

+

6

O

2

So, we would need six moles of carbon dioxide to fully produce one mole of glucose.

Here, we got

88

g

of carbon dioxide, and we need to convert it into moles.

Carbon dioxide has a molar mass of

44

g/mol

. So here, there exist

88

g

44

g

/mol

=

2

mol

Since there are two moles of

C

O

2

, we can produce

2

6

⋅

1

=

1

3

moles of glucose

(

C

6

H

12

O

6

)

.

We need to find the mass of the glucose produced, so we multiply the number of moles of glucose by its molar mass.

Glucose has a molar mass of

180.156

g/mol

. So here, the mass of glucose produced is

1

3

mol

⋅

180.156

g

mol

≈

60

g

to the nearest whole number.

So, approximately

60

grams of glucose will be produced

Mass percent composition is calculated by comparing the molar mass of an element in a compound to the total molar mass of the entire compound.

The given statement that "knowing the chemical properties of substances will tell you how the substance looks" is false becasue it tells you how these substances will react to other substances".

Chemical properties describe a substance's reactivity, flammability, stability, and other aspects related to its chemical behavior, but they do not describe its appearance. Physical properties, such as color, texture, shape, and size, are used to describe the appearance of a substance.

Therefore, knowing the chemical properties of a substance will not tell you how the substance looks.

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Answer:

B. Germanium

Explanation:

Since the carbon group element consists of carbon, germanium, etc. Germanium is in the same group as carbon.

Answer:

-0.398

Explanation:

pOH is a measure of hydroxide ion (OH-) concentration in a solution. A basic solution If a solution has pOH less than 7 then it is a basic solution and if  pOH is greater than 7 then it is an acidic solution. Neutral solutions have pOH equal to 7.

\(pOH=-\log \left [ OH^- \right ]\)

To find pOH of 2.5 M NaOH, solve \(pOH=-\log \left [ 2.5 \right ]\) = -0.398

The ideal gas law equation can be used to make certain assumptions about the isothermal processes of O2 (l, 1 atm) to O2 (l, 1000 atm).The assumptions for the isothermal processes of O2 (l, 1 atm) to O2 (l, 1000 atm) are as follows:

1. The temperature remains constant since the process is isothermal.2. The system is closed and therefore the number of O2 molecules remains the same.3. There is no change in the internal energy of the system since the process is isothermal.4. The gas is assumed to be ideal which means that it follows the ideal gas law equation.5. There is no change in the volume of the system since the process is isothermal and the system is in a liquid state.

The ideal gas law equation can be expressed as PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. At constant temperature, the ideal gas law equation can be simplified to PV = constant.Using the ideal gas law equation, the initial pressure can be calculated as P1 = (nRT)/V1 and the final pressure can be calculated as P2 = (nRT)/V2.

Since the temperature remains constant, the equation can be simplified to P1V1 = P2V2.The above assumptions and equation are applicable for the isothermal processes of O2 (l, 1 atm) to O2 (l, 1000 atm). The ideal gas law equation can be used to calculate the pressures and volumes at different stages of the isothermal process.

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Answer:

Marble.

Explanation:

it's answer a) marble.

Explanation:

Cr=35.880/51=0.73≈0.7

P=21.076/31=0.67≈0.7

O=43.543/16=2.71

Divide each by 0.7 u get

Cr=1 ,P =1, O=4

Empirical formula is CrPO4

This is possible because the volume of water displaced by an object is determined by the volume of the object, not its weight or mass.

The cube of metal I and the cube of another metal both have the same volume, so they would displace the same volume of water. The principle of buoyancy states that the buoyant force on an object is equal to the weight of the fluid that is displaced by the object can be applied in here. Therefore, if two objects have the same volume, they will displace the same amount of fluid and experience the same buoyant force.

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a group electrons is called electon pair.

Answer:

B. electron pairs.

Explanation:

Answer:

copper cathodes are normally referred to when talking about copper. Cathode is the purest form of copper and is the feedstock used to produce copper wire, cable, sheet, strip, tube, etc.

Explanation:

An electrophoretic separation of lactate dehydrogenase isoenzyme that demonstrates elevation in LD-1 greater than LD-2 could be indicative of Hemolysis.

Hemolysis is a process (generally natural process) associated with the elimination of red blood cells.

Hemolysis can be defined as the removal of erythrocytes due to internal or external environmental factors.

Hemolysis can be discovered by analyzing (or counting) the number of certain proteins in plasma.

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When a large tablet dissolves in water, releasing a lot of bubbles, it is a: chemical change occurs.

The dissolved tablet changes the chemical composition of the water. Here's a step-by-step explanation:

When a large tablet is added to water, it begins to dissolve in the water. This process is known as a physical change because no new substance has been formed. However, the large tablet is made up of chemicals that are reacting with the water as it dissolves. As the chemicals react, they produce a lot of bubbles.

The bubbles are formed because of a chemical reaction that occurs when the tablet dissolves. As the chemicals in the tablet react with the water, they release gases such as carbon dioxide. The carbon dioxide gas is what causes the bubbles to form.

The chemical reaction that takes place between the chemicals in the tablet and the water is irreversible, meaning that a new substance is formed. The tablet dissolving in water is a great example of a chemical change because a new substance is formed when the chemicals in the tablet react with the water.

In this case, the bubbles are a byproduct of the chemical reaction that takes place when the tablet dissolves. Therefore, the release of bubbles during the dissolving of the tablet is an indication of a chemical change.

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The pH of the solution after adding 20 mL of 0.20M NaOH can be calculated as follows; Write the balanced equation for the reaction between HCIO and NaOHHCIO + NaOH → NaCIO + H2OStep 2: Determine the number of moles of HCIO initially present in the solution.Number of moles of HCIO = concentration × volume = 0.1 mol/L × 0.04 L = 0.004 mo

Determine the number of moles of NaOH added.Number of moles of NaOH = concentration × volume = 0.2 mol/L × 0.02 L = 0.004 mol

Step 4: Determine the limiting reagent.The limiting reagent is HCIO as it will react completely with the number of moles of NaOH added.'

Step 5: Determine the number of moles of HCIO that reacted with NaOH.Number of moles of HCIO that reacted = 0.004 mol

Step 6: Determine the number of moles of HCIO that remained.Number of moles of HCIO that remained = 0.004 mol - 0.004 mol = 0 mol

Step 7: Determine the concentration of HCIO after the reaction.CHO concentration = remaining volume = 40 mL + 20 mL = 60 mL = 0.06 LCHO concentration = 0 mol/L = 0/0.06 LCHO concentration = 0 mol/L

Step 8: Determine the concentration of CIO-.CIO- concentration = concentration of NaOH added = 0.2 mol/L.

Step 9: Determine the concentration of H+.H+ concentration = Ka × (CHO / CIO-)H+ concentration = (3.0 × 10-8) × (0 / 0.2) = 0 pH solution = -log[H+]pH solution = -log(0) = infinity

Therefore, the pH of the solution after adding 20 mL of 0.20M NaOH is infinity.

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Sunlight, the answer is sunlight or water. I do believe its sunlight. Hope this helps.

Answer: C is the answer

Explanation:

A P E X

The number of oxygen atoms in 1 mol of O₂ gas is 2 x (6.02 x 10²³). Hence, Option (C) is correct.

What is Mole concept ?

A mole is defined as the amount of a substance that contains exactly the Avogadro number of 'elementary entities' of the given substance.

there are 2 × Nₐ oxygen atoms,

where,

Nₐ = Avogadro's number = 6.022 × 10 ²³

    = 2 × Nₐ oxygen atoms,

    = 2 x (6.02 x 10²³)

Therefore, The number of oxygen atoms in 1 mol of O₂ gas is 2 x (6.02 x 10²³). Hence, Option (C) is correct.

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There is only one pKa value for a monoprotic acid.

A monoprotic acid is an acid that has a single acidic proton, \(H^+\). In other words, a monoprotic acid is an acid that can donate only one proton or hydrogen ion to a base or a solution of water. Because of this characteristic, monoprotic acids have only one acid dissociation constant (Ka) and one pKa value.

This pKa value is a measure of the acid's strength. The lower the pKa value of an acid, the stronger it is. For example, acetic acid has a pKa value of 4.76, while hydrochloric acid has a pKa value of -8.

However, because pKa values are negative logarithms, the more negative the pKa value, the stronger the acid.

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Answer:

The oxidation number for sulfur in SO2 is +4.

Explanation:

To find the oxidation number of sulfur, it is simply a matter of using the formula SO2 and writing the oxidation numbers as S = (x) and O2 = 2(-2) = -4. Using the rule and adding the oxidation numbers in the compound, the equation becomes x +(-4 ) = 0. Solving for x, it is evident that the oxidation number for sulfur is +4.

Answer:

Its right!

Explanation:

Answer:

16

Explanation:

Answer:

16 hopes this will help you

Explanation:

16 hope this helps

Answer:

10 moles of O2

Explanation:

Balanced Equation:

CH4 + 2O2=CO2+2H2O

Now,

According to Stoichiometry,

In the reaction,

           1 mole CO2 is produced by 2 moles of O2

∴5 moles of CO2 is produced by (2 X 5) moles of O2

                                                       = 10 moles of O2

Therefore, to produce 5 moles of CO2, 10 moles of Oxygen is needed.