An asteroid in space has traveled 4,500 km in 60 s, what is the average speed of the asteroid?

The pH value of the apple juice is 3.5 and The pH value of ammonia is: 8.5.

pH can be calculated using the following equation

pH = -log [H₃O⁺]

for apple juice the hydronium /hydrogen ion concentration is 0.0003

pH = -log (0.0003)

pH = 3.5

The pH value of the apple juice is 3.5

For ammonia

pH = -log (3.1 x 10⁻⁹)

pH = 8.5

The pH value of ammonia is: 8.5

NB: Not available in the option.

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The methyl group of pyruvate is where C1 labels when it is added to glucose. A hexose is split into two trioses by aldolase.

What exactly happens during fermentation?

Carbohydrates are broken down by the enzymes of microorganisms during fermentation in the absence of oxygen. Microorganisms like bacteria and fungi are able to produce enzymes that can break down different kinds of sugar molecules because they have unique sets of metabolic genes.

Short answer: What is the fermentation process?

A substance decomposes into a simpler substance through the process of fermentation. In the absence of oxygen or any electron transport, the metabolic process known as fermentation transforms organic molecules (mostly carbohydrates like starch or sugar) into acids, gases, or alcohol.

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Copper has a 2+ charge (Cu²+), so it requires two moles of electrons to deposit one mole of copper metal. 0.186 mol of electrons can deposit 0.093 mol of copper. Given copper's molar mass (63.55 g/mol), the deposited mass is 0.093 mol × 63.55 g/mol ≈ 5.91 g of copper metal.                                                                                                                

To answer this question, we can use Faraday's law which states that the amount of metal deposited is directly proportional to the amount of electrical charge passed through the solution. The equation for this is:
mass of metal deposited = (current x time x atomic weight) / (valence x Faraday's constant)

In this case, we want to find the mass of copper deposited, so we'll substitute in the values given:
mass of copper deposited = (2.50 A x 2.00 h x 63.55 g/mol) / (2 x 96,500 C/mol)
To determine the grams of copper metal deposited, we'll use Faraday's Law of Electrolysis. Given a current of 2.50 A and a duration of 2.00 h, we can find the total charge passed (Q) as Q = current × time = 2.50 A × (2.00 h × 3600 s/h) = 18,000 C. Now, we'll use Faraday's constant (F = 96,500 C/mol) to calculate moles of electrons transferred: 18,000 C / 96,500 C/mol ≈ 0.186 mol.

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This might help you with your question.

This is a person who scientific researches to make more knowledge in a certain area of interest

Answer:

The answer should be D

Explanation:

because turning 1 mole of propane to grams means its still one mole of propane just in a different unit.

The best optimal wavelength at which to measure the absorbance of a set of given crystal violet solutions is 590 nm.

Crystal violet is a type of dye that is commonly used in laboratories to stain cells. It absorbs light most strongly at a wavelength of 590 nm, which is in the visible light spectrum. This is the best wavelength to use when measuring the absorbance of crystal violet solutions because it will provide the most accurate and reliable results.

To measure the absorbance of the crystal violet solutions, you will need a spectrophotometer. This is a device that measures the amount of light absorbed by a sample at a specific wavelength. First, you will need to calibrate the spectrophotometer using a blank solution. Then, you can measure the absorbance of each crystal violet solution at 590 nm by placing the solution in the spectrophotometer and recording the absorbance value.

By measuring the absorbance of the crystal violet solutions at the optimal wavelength of 590 nm, you can ensure that you are getting the most accurate and reliable results.

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If the radiation is able to pass through the cardboard box holding the sample, but doesn't pass through the row of steel file cabinets along her wall then the element is emitting gamma radiation.

Gamma rays are the type of high-energy electromagnetic radiation that is released from the nucleus when undergoing radioactive decay. Gamma rays have the highest energy of all types of radiation and can penetrate matter deeper than alpha and beta rays. Gamma rays are used in a variety of medical, industrial, and scientific applications such as; Cancer treatment, sterilization, scientific research, food safety. Gamma rays are also a form of ionizing radiation, meaning they can damage living tissue.

In this case, the element most likely emits gamma rays. Gamma rays are the most penetrating type of radiation, easily penetrating cardboard but not steel. Alpha and beta rays have low penetrability and cannot pass through cardboard.

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Answer:

Electrons

Explanation:

Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”

The rays produced in a cathode tube are electrons which are present in the shells surrounding the nucleus of an atom.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

I'm not sure if she wants you to simplify the ratio like I would assume you are supposed to so I would say 1:3

I would say the other is 4.5 moles of H2 can be produced

2 * 1.5 = 3 Fe

3 * 1.5 = 4.5 H2

Explanation:

hope this helps

The volume occupied by a sample of 12.0 mole of hydrogen gas is 2.46 L.

The volume of a gas can be calculated using the following expression;

PV = nRT

Where;

According to this question, a sample of 12.0 mol of hydrogen gas occupies 120 atm at 27 °C. The volume can be calculated as follows:

120 × V = 12 × 0.0821 × 300

120V = 295.56

V = 2.46 L

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Using 1h nmr spectroscopy, the difference between an aldehyde and a ketone is predicted as an aldehyde contains two C-H stretches ranging between 2700-2850 cm⁻¹.

Spectroscopy is the study of how light as well as other radiation are absorbed and emitted by materials, and how this depends just on wavelength of that radiation.

Some characteristics of spectroscopy are-

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Answer:

violet

Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. Ultraviolet (UV) light—is radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 .

Explanation:

The element has an atomic mass of 106.4679.

The average mass of an element's atoms expressed in atomic mass units is the term for an element's atomic mass (AMU, also known as daltons, D). The atomic mass, which represents a weighted average of all the isotopes of that element, is calculated by multiplying the mass of each isotope by its abundance.

A weighted average of masses of all natural isotopes of an element by their abundance

= First isotope mass × Relative abundance + Second isotope mass × Relative abundance/100

= 105.9041 × 71.82 × 107.9047 × 28.18/100

The atomic mass of the element = 106.4679 ama

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The names of the reactants and products, as well as the precise quantity of molecules or moles each of that are consumed or created, are provided by a balanced chemical equation.

A chemical equation represents a chemical reaction symbolically, with the products and reactants denoted by their corresponding chemical formulas. Example: Water is created by the following reaction: 2 H2 Plus O2 2 H2O.

The chemical formula of a compound serves as a representation of its chemical name. It lists the constituents that make up each complex molecule along with the number of atoms in each element.

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The species that one would expect to have the lowest standard entropy (S°) from the given options is c. I2(s).

Iodine is a halogen that exists in many oxidation states in nature. It is the heaviest of the halogens, with a molecular weight of 126.9. It is found in the Earth's crust as iodate salts, and it is present in seawater and inorganic compounds as well. The normal state of iodine at ambient temperature and pressure is solid.

At room temperature, it sublimes to produce a deep violet vapor, which is denser than air. The standard entropy of a substance is the amount of energy that a substance has in its standard state, which is the energy required to raise the temperature of one mole of substance to 298 K at a pressure of 1 atm.

The standard entropy of the substances in the given options is as follows:

H2(g) : 131.0 J/Kmol

Cl2(g) : 223.1 J/Kmol

F2(g) : 202.7 J/Kmol

Br2(l) : 152.2 J/Kmol

I2(s) : 116.7 J/Kmol

As we can see, the standard entropy of I2(s) is the lowest of all the options given.

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Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

The Curiosity rover found that ancient Mars had the right chemistry to support living microbes.

These are organisms which can be seen with microscope and not with the nak ed eyes.

Curiosity rover was sent to mars to study life forms in which it was discovered that they were present.

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Explanation:

Since there is a vacuum in space, there is no oxygen there, so how does the sun burn? It releases energy because of nuclear fusion in it's core where hydrogen turns into helium. That is how the sun becomes hot amd bright.

Answer:

He could separate the mixture through filtration and fractional crystallization. Ethanol can also be added in order to remove salt.

B. AgNO₃ is the oxidizing agent

Oxidation is an increase/increase in oxidation number, while reduction is a decrease/decrease in oxidation number.

In the redox reaction, it is also known

Reducing agents are substances that experience oxidation

The oxidizer is a substance that is reduced

Reaction

Cu+2AgNO₃ ⇔ 2Ag + Cu(NO₃)₂

Oxidizing reaction :

Cu⇒Cu²⁺+2e⁻ (oxidation number from 0 to +2)

Reducing reaction

2Ag⁺+2e⁻⇒Ag (oxidation number from +1 to 0)

the oxidizing agent ⇒a substance that is reduced , so that is AgNO₃

Answer:

B. AgNO3

Explanation:

Answer:

cells arose from preexisting cells

Explanation:

Rudolph Virchow is a German biologist that built on the work of other scientists such as Theodor Schwan to contribute his own quota to the development of the cell theory as it is currently known.

After several studies, Virchow rejected the idea of spontaneous generation and accepted the initially rejected idea of cell division. He earlier believed that cell division only takes place is some special type of cells and not in all cells.

Even though Virchow was not the first to bring the idea of cells arising from preexisting cells, he was the one that popularized the idea and added it to the earlier belief that all living organisms are made up of cells.

Answer:

B

Explanation:

Answer:

Frequency is 2Hz

Explanation:

The compounds expected to form hydrogen bonds with water are acetamide and butanoic acid.

Hydrogen bonding occurs between molecules containing a hydrogen atom bonded to a highly electronegative element, such as nitrogen, oxygen, or fluorine.

Acetamidehas a hydrogen atom bonded to nitrogen, and butanoic acid  has a hydrogen atom bonded to oxygen. These polar molecules can form hydrogen bonds with water.

Cyclopentane  is a nonpolar hydrocarbon, and ethyl methyl ketone lacks hydrogen atoms bonded to highly electronegative elements, so they cannot form hydrogen bonds with water.

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Answer:

4+3=3+3+2

Explanation:

4Ni(oh)3+3pb(so4)2=3pb(oh)4+2Ni2(so4)3

When the electron, proton, and neutron move at the same speed, the electron will have the lowest matter wave wavelength of the trio.

The de Broglie wavelength of a particle is given by the equation λ = h / p, where λ is the wavelength, h is Planck's constant, and p is the momentum of the particle. Since the speed of the electron, proton, and neutron is the same, their momentum will be directly proportional to their mass.

Comparing the masses of the three particles, we find that the electron has the smallest mass, followed by the proton, and the neutron has the largest mass.

Therefore, for the same speed, the electron will have the largest momentum, and consequently, the smallest matter wave wavelength.

In summary, the electron will have the smallest matter wave wavelength among the electron, proton, and neutron when they have the same speed.

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Answer:

2679.5 seconds  or 2679.5 / 60 = 44.66 minutes to produce 2 dm3 of chlorine gas.

Explanation:

To solve this we must be knowing each and every concept related to current. Therefore, it will take 44.66 minutes to produce  2 dm³ of chlorine gas by passing 6A current through concentrated sodium chloride solution.

When an electrical current continually runs in a single direction, it is said to be in direct current. Rectifiers, batteries, generators using commutators, and fuel cells all generate direct current. A flashlight or an appliance powered by batteries, for instance, both use direct current.

Among the most crucial subjects addressed in physics is AC, DC current. A form of electrical current known as an alternating current, sometimes known as an AC current, is one in which the direction of electron flow changes periodically.

2679.5 / 60 = 44.66 minutes to produce 2 dm3 of chlorine gas by passing a 6A current through concentrated sodium chloride solution.

Therefore, it will take 44.66 minutes to produce  2 dm³ of chlorine gas by passing 6A current through concentrated sodium chloride solution.

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Answer:

True

Explanation:

Answer:

True

Explanation:

Most people stick to what they know and don't look for a laughing place.

Answer: a I think

Explanation:

Answer:

I think the answer is a

Explanation:

There is a 33.3% chance that it is correct. Why not risk it?

Answer:

About 60 grams.  

Explanation:

The on point answer is 61.28 grams.