Use S1/P1 = S2/P2 , the solubility of a gas is 2. 36 g/L at a pressure of 345 atm. What is the solubility if the pressure increases to 445 atm at the same temperature?

Answer:

peroxide such as hydrogen peroxide In peroxide, oxygen has an oxidation number of -1. when oxygen is combined with fluorine it's oxydation number is +2

Answer:

Since electromagnetic forces are responsible for regular chemical bonds, every chemical compound would dissolve. All life and all ordinary objects would cease to exist. I think your question would call on electrons and protons to cease to exist, since these particles are associated with the electromagnetic force.

Explanation:

Answer:

Refer to the picture.

Answer:

The hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1, can be calculated if the pOH of the solution is known.

pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1 pOH = -log10[OH-]

Explanation:

Answer:

B. Past changes in the climate have been faster than the changes we're seeing today

Explanation:

The Earth is warming abnormally quickly . Over the past century it has warmed roughly 10 times faster than the average increase in temperature after each ice age .

so the answer is B.Past changes in the climate have been faster than the changes we're seeing today.

Answer:

D

Explanation:

The study of an organism's chromosomes helps in the identification of the sex of the organisms. Thus, option A is correct.

Chromosomes have been tightly bonded DNA with the genetic information of the organism. Eukaryotic humans have consisted of 23 pairs of chromosomes.

The study of chromosomes helps in the determination of the genes types and the study of genes will be related to the traits and phenotype of the organism. Among the 23 pairs of chromosomes, one pair of chromosomes has been the sex chromosome that helps in the determination of the sex of the organism.

Thus, the study of an organism's chromosomes helps in the identification of the sex of the organisms. Thus, option A is correct.

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Answer:

1. 104000m

2. 160mm

3. 5600000 mg

Answer:

Subatomic particles are the proton (1 amu), neutron (1 amu), and electron (0 amu)

Explanation:

Atomic mass unit (amu; dalton): A unit of mass equal to exactly 1/12 the mass of one 12C atom, or 1.660538921 x 10−27 kg. This is the approximate mass of one proton or one neutron. It is the basis of atomic weights.

Answer:

\(\boxed{\mathrm{see \: below}}\)

Explanation:

Protons have a mass of 1 amu (atomic mass unit).

Electrons have a mass of \(\frac{1}{1840}\) amu (atomic mass unit).

Neutrons have a mass of 1 amu (atomic mass unit).

The TPA-25 as the specific Alu because it has been shown to have a high level of activity in retrotran position,  the process by which Alu elements replicate and insert themselves into new locations in the genome.  TPA-25 has been well-studied and characterized in previous research, making it a reliable target for experimentation.  

The TPA-25 the specific Alu for the reasons Specificity TPA-25 is a specific Alu sequence that has been identified for its unique characteristics. It helps target a particular region within the genome, ensuring precise and accurate analysis.
Reliability TPA-25 is a well-studied and reliable Alu sequence, which means that it has been proven to produce consistent and trustworthy results in various studies and applications Relevance The choice of TPA-25 may be based on its relevance to the research question or the biological process under investigation. It could be associated with a specific gene, trait, or disease, making it an ideal candidate for the study. Ease of detection TPA-25 may have been chosen due to its ease of detection through various molecular techniques, such as PCR or sequencing, which allows researchers to effectively and efficiently study the sequence. In summary, we chose TPA-25 the specific Alu because of its specificity, reliability, relevance, and ease of detection in genomic research.

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Answer:

Beginning or Start

Explanation:

Reactions can be followed by measuring changes in concentration, mass and volume of reactants or products. The rate is highest at the start of the reaction because the concentration of reactants is highest at this point.

Hope this helped! :^)

There are two types of substances, they are combustible and non-combustible substances. Those substances which undergo combustion are defined as the combustible substances. Here the mass of ethanol is 3832.26 g.

The process in which a substance burns in the presence of oxygen to produce heat and light can be defined as the combustion. The products of the combustion reaction are carbon-dioxide and water.

The combustion of ethanol is:

C₂H₅OH  +  3O₂  →  2CO₂  +  3H₂O

1 mol of ethanol, you can make 3 mole of water.

Moles of water = mass / Molar mass = 500.0 / 18 = 27.77

27.77 mole came from 27.77 × 3 / 1 = 83.31 mole of ethanol

Molar mass ethanol = 46 g/mol

Mass =  83.31 ×  46 = 3832.26 g

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Answer:Superfatting is done for two reasons. The first is that extra oils add more moisturizing qualities to your soap (sometimes referred to as emollients). The second is that the common 5% superfatting allows you to a bit more leeway with your lye.

Explanation:What Are the Benefits of Using Excess Fat to Make Soap?

Written by Mustiin Soap

Handcrafted soaps with a little touch of essential oils and sweet, subtle fragrances can offer you a powerful bathing experience. While aroma enriches your mind, the excess fats, on the other hand, are the ones that enhance the overall impact on your skin. Whether made by a hot or cold process, adding fats is essential.

Adding excess fat or superfatting of soap benefits the soap’s moisturizing ability. Another significant benefit is its compatibility with the skin’s pH. As the soap has a pH of about 9.5, and the skin’s pH varies between 4.5-6. Superfatting is used to make the soap more skin-friendly.

The molar mass of Be(CIO3)₂ is 176g/mol.

The molar mass of a substance is the mass of a given substance divided by its amount, measured in moles.

It is commonly expressed in grams (sometimes kilograms) per mole. The molar mass of a substance can be calculated by summing the atomic masses of each element in the substance as follows:

Molar mass of Be(CIO₃)₂ = 9 + {35.5 + 16(3)}2

Molar mass = 176g/mol

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Answer:

Hi.. Your answer is element A

Answer:

Gravity causes gas in space to come together and form stars. As the star becomes denser and denser, the pressure and temperature at its core become high enough to initiate nuclear fusion reactions, where hydrogen atoms fuse together to form helium, releasing a huge amount of energy. This energy keeps the star hot and shining for millions or billions of years. Without gravity, nuclear fusion would not occur, and the universe as we know it would not exist.

Explanation:

Gravity played a crucial role in causing fusion reactions to occur between hydrogen and helium. In the early universe, after the Big Bang, there were only light elements such as hydrogen and helium, and gravity was the main force that brought these elements together to form stars. As a large amount of hydrogen gas began to accumulate in one area, the force of gravity caused the gas to contract and become denser and denser. As the density and temperature of the gas increased, the pressure in the core of the gas cloud became high enough to initiate nuclear fusion reactions.

During nuclear fusion, the extreme temperature and pressure in the star's core caused hydrogen atoms to fuse together to form helium. This fusion process released a huge amount of energy in the form of light and heat, which kept the star hot and shining for millions or even billions of years. Without the force of gravity to bring hydrogen atoms together, fusion reactions would not occur, and the formation of heavier elements, including those necessary for life, would not be possible. Therefore, gravity is the cause that initiated the fusion reactions, leading to the formation of heavier elements and eventually the complex universe we observe today.

The three things are the number of protons, neutrons, and electrons that can be discovered about an element using the periodic table.

The protons, neutrons, and electrons are the three primary atomic particles. The quantity of protons in an atom is indicated by its atomic number. This is what distinguishes one element from other elements. While maintaining its elemental nature, an atom can gain or lose electrons or neutrons. A period table gives u information about the number of protons by telling you the atomic number. Hence, number of electrons and neutrons can also be discovered.

The tabular arrangement of all chemical elements according to their individual atomic numbers is known as the periodic table. The horizontal rows and vertical columns of the periodic table are referred to as "periods" and "groups," respectively.

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Edible mushrooms: Consuming edible mushrooms is safe and provides health advantages like fiber, vitamins, and minerals.

Non-Edible mushrooms: Mushrooms that cannot be eaten could be harmful or have unappealing flavors and textures that could be harmful if consumed.

Transmit a ground-state electron to an excited state. One or more electrons can be removed from neutral atoms to transform them into positively charged ions.

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A receptor potential can cause all of the responses listed except for B) decrease neurotransmitter release.

Receptor potentials are graded potentials that occur in sensory neurons when their receptors are activated by a stimulus. The receptor potential may cause depolarization or hyperpolarization depending on the type of receptor and the ion channels involved.

If the receptor potential causes depolarization that reaches the threshold, it may trigger an action potential, which can lead to the release of neurotransmitters. This can result in either an increase or decrease in neurotransmitter release, depending on the type of synapse and the specific neurotransmitter involved.

Additionally, the receptor potential may cause hyperpolarization, which can inhibit the release of neurotransmitters, but it does not directly lead to a decrease in neurotransmitter release.

Finally, the receptor potential may turn off the original stimulus through a process called adaptation, but this is not a direct response of the receptor potential.

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To form needles, the conditions would need to include a specific temperature and level of supersaturation. Supersaturation refers to a solution that contains more of a dissolved substance than can be normally accommodated at a specific temperature.

In this case, the supersaturation levels range from 0.05 g/m3 to 0.2 g/m3 and the temperatures range from -30 oC to -2 oC.
However, the specific conditions that would result in needle formation depend on the substance being dissolved. Without knowing the substance in question, it is difficult to determine which combination of temperature and supersaturation would result in needle formation. Different substances have different solubility characteristics and therefore require different conditions to reach supersaturation.
In general, needle-like crystals tend to form in highly supersaturated solutions when the rate of crystal growth is limited by a low diffusion rate. This results in a slow and steady growth of needle-like crystals. In order to determine the specific conditions required for needle formation, a detailed analysis of the solubility characteristics of the substance in question would be necessary.

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Given :

• Molar mass of FeBr3 = 295.56 g/mol

• Mass of FeBr3 = 449 g

The balanced reaction is given as :

by stoichiometry , we can see that :

• 2 moles of FeBr3 produces 1 moles of Fe2S3

Therefore ;

• 1.52 mol of febr3 produces X Fe2S3

• X moles of FE2S3, = (1.52moles FeBr3 * 1 mol Fe2S3) /2 moles

FeBr3.

=0.755 moles

≈0.76 moles

• This means that 0.76 moles of Fe2S3 would be produced from the complete reaction of 449 g iron(III)bromide,

The distribution of electrons among orbitals in a many-electron atom is known as its electron configuration.

The electron configuration describes how electrons are distributed in the various energy levels and orbitals around the nucleus of an atom. It is represented using a series of numbers and letters that indicate the principal energy level (n), the type of orbital (s, p, d, f), and the number of electrons in each orbital.

For example, the electron configuration for carbon (C) is 1s^2 2s^2 2p^2, which shows that carbon has two electrons in the 1s orbital, two electrons in the 2s orbital, and two electrons in the 2p orbital.

The electron configuration provides important information about the arrangement and organization of electrons within an atom, which in turn affects the atom's chemical properties and reactivity.

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Answer:

Chemical compounds all have different melting points.

Explanation:

chemical compounds all have different freezing and boiling points. Different chemical compounds means they will have different chemical structures.

Answer: A,B,C

Explanation:

Answer:

a

b

c

Explanation:

edge

The percentage yield is 44.6%.

As was said before, 80g of calcium carbonate will be present in a 100g sample of impure calcium carbonate. As is common knowledge, calcium carbonate has a molecular weight of 100 g. Hence, 22.4 L of carbon dioxide will be produced from 100 g or 1 mol of pure calcium carbonate.

Calcium Carbonate → Calcium oxide + Carbon dioxide

The molar mass of Calcium Carbonate is 100.1 g/mol, so 60.0 g of Calcium Carbonate is equal to:

60.0 g / 100.1 g/mol = 0.599 mol Calcium Carbonate

The molar mass of Calcium oxide is 56.1 g/mol, so the theoretical yield of Calcium oxide is:

0.599 mol × 56.1 g/mol = 33.5 g Calcium oxide

The actual yield is calculated by dividing it by the theoretical yield and multiplying the result by 100%.

(Actual yield / Theoretical yield) / 100% is the percentage yield.

Percent yield = (15.0 g / 33.5 g) × 100% = 44.8%

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Answer:

Where are these Chambers located ], there is hundreds of them in the world

Answer:

5 grams of iron react with 5 grams of oxygen to produce iron 3 oxide.

The actual yield of the reaction is--- 5 grams.

What is the percent yield?

Explanation:

The balanced chemical equation of the reaction is:

\(4Fe(s)+3O_{2} (g)->2Fe_{2} O_3(s)\)

1)Identify the limiting reagent.

2)Using the limiting reagent calculate the amount of theoretical yield formed.

Identification of limiting reagent:

4 mol of Fe reacts with 3mol. of O2

that is:

4mol(55.84g/mol) of Fe reacts with ---- 3mol (32.0g/mol)

=223.36g of Fe reacts with ---- 96g. of O2

then,

5g of Fe requires how many grams of O2?

\(=>5g. of Fe * \frac{96g O2}{223.36g Fe} \\=2.14g. of O_{2} .\\\)

But provided 5g of O2.

So, O2 is present more than required.

Hence, O2 is the excess reagent and the limiting reagent is Fe.

The amount of product formed depends only on the amount of Fe only.

Theoretical yield:

From the balanced chemical equation:

4mol. of Fe forms ----- 2mol. of Fe2O3.

that is

223.36g of Fe forms --- 2(159.68g)of Fe2O3.

=>223.36g of Fe forms --- 319.36g of Fe2O3.

then,

5g of Fe forms ----? grams of Fe2O3

\(=>5g of Fe * \frac{319.36g Fe2O3}{223.36g of Fe} \\=7.14g. of Fe2O3\\\)

\(%Error =\frac{actual yield}{theoretical yield} * 100\\\\ %error=\frac{5g}{7.14g} * 100\\ %error =70.0\)% error=actual yield/ theoretical yield  x 100

%error=5g./7.14g  x100

=>%error=70.0

Hence, the answer is 70.0%.

Answer:

Formula Weight of gas sample = 20.1 g/mole => Neon (Ne)

Explanation:

Use Ideal Gas Law formula to determine formula weight and compare to formula weights of answer choices.

PV = nRT = (mass/fwt)RT => fwt = (mass/Volume)RT = Density x R x T

Density = 0.900 grams/L

R = 0.08206 L·atm/mole·K

T = 0.00°C = 273Kfwt = (0.900g/L)(0.08206L·atm/mole·K )(273K)

= 20.1 g/mol => Neon (Ne)