Help Anyone! What would be the correct answer to this question?

Answer:

NADH and FADH2

Explanation:

The electron transport chain yields ATP, the energy driver for the body's metabolism by using atmospheric oxygen at the mitochondria.

The role of NADH and FADH2 (nicotinamide adenine dinucleotide (NAD) + hydrogen (H) and Flavin adenine dinucleotide) becomes so important as they are responsible for giving out electrons to the electron transport chain and that is a very crucial process for cellular respiration as adenosine triphosphate is produced. The hydrogen molecule in NADH and FADH2 are lost to the waiting oxygen molecule which now forms water.

The presence of a non-volatile salt will decrease the freezing point of water and this process is called depression in freezing point. Thus option D is correct.

Freezing point of a substance is the temperature at which it converts from its liquid state to solid state where, both the states are in equilibrium. Freezing point of water is zero degree celsius.

The freezing point of a solvent depends on some parameters such as the bond type, molecular weight, temperature, pressure etc.

When a non-volatile solute is added to the solvent its freezing point decreases from its initial value. Because presence of non-volatile salts will affect the intermolecular attraction and thereby the energy that must be applied to freeze the compound.

Therefore, the freezing point of water decreases, when sodium chloride is added into it. Thus option D is correct.

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Explanation:

When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. ... But lunar eclipses do not occur every month because the Moon's orbit is tilted five degrees from Earth's orbit around the Sun.

Answer:

Ne 20: 10

and

Ne 22: 12

Explanation:

Ne-20:

N = A - Z = 20 - 10 = 10 neutrons

Ne-22:

N = A - Z = 22 - 10 = 12 neutrons

N: number of neutrons

A: mass number

Z: atomic number

Answer:

Earth is electromagnet

Refrigerator is permanent magnet

Venus is not

Explanation:

Answer:

b...4:2

Explanation:

Answer:

B on edge

Explanation:

Answer:

Animals are used in scientific research to help us understand our own bodies and how they work. This is necessary to develop new medicines. Animals are also used to safety test potential medicines before they are tested in people and to check the safety of other chemicals.

Explanation:

Answer:

C Endothermic

Explanation:

a. p. e. x

Answer:

If the percentage abundance of Cl-35 is x , then x×35+(100−x)37100=35.5

75% of Cl-35 and 25% of Cl-37.I hope this helped!

Explanation:

Well arranged question is;

Select the statement that is FALSE about this experiment. Group of answer choices;

A) Changing metal solution will affect the redox potential.

B) To ensure consistent data, collect the redox potential values at least three times.

C) Changing temperature will affect the redox potential.

D) To ensure stable reading, insert the conductivity meter in the solution for at least 60 seconds.

E) Changing concentration will affect the redox potential.

Answer:

D) To ensure stable reading, insert the conductivity meter in the solution for at least 60 seconds.

Explanation:

Usually, redox potential is the measure of the ability of chemical elements to gain/lose electrons from/to an electrode respectively and after which they undergo reduction or oxidation respectively.

From online sources on experiments to determine redox potential, and taking into account the nernst equation which is; E_cell = E_0 – (RT/nF)•ln Q

Where;

E_cell is cell potential

E_0 is potential of the cell under standard conditions

R is universal gas constant

T is temperature

n is the number of electrons that are transferred in the redox reaction

F is Faraday's constant

Q is reaction quotient

Now, with all that in mind and looking at the options, the one that is false is option D.

Answer:

B

Explanation:

took the test

D. It should have a half-life much longer than the age of the object being dated. When using isotopes for dating purposes, it is important to choose an isotope with a half-life that is significantly longer than the age of the object being dated.

The half-life is the time it takes for half of the radioactive isotopes in a sample to decay into stable isotopes. By measuring the ratio of the original radioactive isotope to the decay product, scientists can determine the age of the object.

The majority of the radioactive material would have decayed if the isotope had a half-life substantially less than the age of the artefact, making it challenging to precisely establish the age.

On the other hand, the dating procedure would become more challenging and unpredictable if the isotope in the object being dated (option C) has a half-life that varies over time.

As a result, an isotope with a long half-life offers a stronger basis for precise dating since it enables sufficient radioactive decay to take place, producing quantifiable and trustworthy data.

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Answer:

i answered you

Explanation:

Answer:

Increases.

Explanation:

The orbital energies increases when the reduction of electron number occurs due to removal from the outermost shell. When we go farther from the nucleus, the energy of orbitals increase. The electron that is farther from the nucleus experience more repulsions because of the shielding effect of other electrons that is present between nucleus and outermost electron. Due to this shielding effect, it is easier to remove the outermost electron which leads to increase  orbital energies.

Answer:

If those values are in terms of mass, weight or velocity

Kinetic energy will be in the order 180 » 120 » 105

Answer:

105, if you're dealing with the weight of object

Explanation:

It's the amount of speed/movement an object can move. The lighter the weight the more amount of speed it has.

Hope this helps!

Answer:

Sea water salinity is expressed as a ratio of salt (in grams) to liter of water. In sea water there is typically close to 35 grams of dissolved salts in each liter. It is written as 35‰. The normal range of ocean salinity ranges between 33-37 grams per liter (33‰ - 37‰).

262. 5cm3.

using the Boyles law formula. p1v1=p2v2

P1=760torr.

v1=525cm³

p2=760×2=1520torr.

v2=?

p1v1=p2v2

760×525=1520×v2

v2=[ 760×525]÷1520

v2= 262.5cm³

when the pressure increases, the volume decreases.

Answer:

Frictional Force is contact force.

Answer:

its friction force bcz in friction u become in contact with a surface that produces heat

Answer: hydrogen gas

Explanation: When magnesium interacts with water, it will form a hydrogen gas that ignites violently due to the excessive heat and oxygen supply.

Answer: 3.7x10^-9

Explanation:

Answer:

fishery

An area with a large population of valuable ocean organisms is called a fishery. If it was correct mark me as brainiest

Answer:

35.0 atm + 5.0 atm + 25.0 atm = 65 atm

Explanation:

Partial pressure + Partial pressure + Partial pressure = Total pressure

The concept Dalton's law of partial pressures is used here to determine the total pressure of the gas. The total pressure of the gas is the sum of partial pressures of the gas. Here the total pressure is 65 atm.

The pressure exerted by a mixture of two or more non-reacting gases enclosed in a definite volume is equal to the sum of the partial pressures of the component gases.

The partial pressure of a component gas in a mixture is the pressure that gas would exert if present alone in the vessel at the same temperature as that of the mixture.

Let p₁, p₂, p₃, etc. are the partial pressures. Then the total pressure is given as:

P = p₁ + p₂ + p₃

P = 35.0 + 5.0 + 25.0

P = 65 atm

Thus the total pressure is 65 atm.

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Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

Answer:

Label each solution as acidic, basic, or neutral based only on the stated pH.

milk of magnesia, pH = 10.5

pure water, pH = 7

wine, pH = 3.0

Solution

With a pH greater than 7, milk of magnesia is basic. (Milk of magnesia is largely Mg(OH)2.)

Pure water, with a pH of 7, is neutral.

With a pH of less than 7, wine is acidic.

Answer:

0.42 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of acid, HCl (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

Finally, we shall determine the molarity of the base, NaOH. This can be obtained as follow:

Volume of acid, HCl (Vₐ) = 25 mL

Molarity of acid, HCl (Mₐ) = 0.25 M

Volume of base, NaOH (V₆) = 15 mL

Molarity of base, NaOH (M₆) =?

MₐVₐ / M₆V₆ = nₐ/n₆

0.25 × 25 / M₆ × 15 = 1

6.25 / M₆ × 15 = 1

Cross multiply

6.25 = M₆ × 15

Divide both side by 15

M₆ = 6.25 / 15

M₆ = 0.42 M

Therefore, the molarity of the base, NaOH is 0.42 M

HNO3

Explanation:

hydrochloric acid (HCl), sulfuric acid (H 2start subscript, 2, end subscriptSO 4start subscript, 4, end subscript), nitric acid (HNO 3start