The compound acetaldehyde most likely contains the functional group shown below:
-C-
downwards equal sign
O
true or false.

An ensemble experiment is an experiment to assess the average size of many molecules, which depends on the size of each molecule.

An ensemble experiment is an experimental procedure where the size of molecules is expressed as an assemble value.

This type of experiment (ensemble experiment) may vary according to the size of a specific molecule that may alter the outcome (i.e., the average size).

In conclusion, an ensemble experiment is an experiment to assess the average size of many molecules, which depends on the size of each molecule.

Learn more about experiments in chemistry here:

https://brainly.com/question/26150306

#SPJ1

Answer:

Explanation:

Each bottle leaks harmful chemicals into our environment along the way as it decomposes. Studies show that the toxins decomposing bottles of water leach into our environment cause a variety of health issues, including reproductive problems and cancer.

PLEASE MARK AS BRAINLIEST ANSWER

Answer:

961.78 C

Explanation:

961.78 C is the melting point of silver

Answer:

954 C     (according to the numbers given)

Explanation:

Specific heat of silver = 235 J/(kg-K)

   25 C  = 298.15 K

4.91 / 1000  * ( K - 298.15 K)  * 235 = 1072 J

K = melting point = 1227.2   K

= 954 C

Explanation:

In an atom,electrons(negatively charged) revolve around the positively charged nucleus in a definite circular path called orbits or shells

Niels Bohr proposed the atomic model in 1913. This model is based on the idea that electrons are located in energy levels that surround the nucleus. In order to keep the electrons from collapsing into the nucleus, Bohr proposed that there were specific energy levels that electrons could occupy.

The postulation of Niels Bohr's atomic model is as follows:When an electron is at its lowest energy level, it is said to be in its "ground state." When an atom absorbs energy, an electron can move to a higher energy level. When an electron returns to its ground state from a higher energy level, it releases energy in the form of light.In the Bohr model, the positively charged nucleus is orbited by electrons that are organized into discrete energy levels.

Each energy level is designated by an integer number, with the first energy level being closest to the nucleus and the highest energy level being the farthest away from the nucleus. Electrons cannot exist between energy levels, but they can jump from one energy level to another if they absorb or emit energy.

Know more about  Niels Bohr   here:

https://brainly.in/question/2899228

#SPJ8

Answer:

144.7 g/mol would be the molar mass of the monoprotic acid

Explanation:

We can find the molar mass of the monoprotic acid from the data showed in the excersie. As every titration we can say that:

mEq acid = mEq base

mEq acid = 14.6 mL . 0.426 M

mEq acid = 6.2196 mEq

mEq = Volume (mL) . N = mass (g) / (EQ / 1000), where the EQ is the:

Molar weight / valence. For this case, as the acid is a monoprotic one, we assume Molar Weight = EQ

6.2196 mEq = 0.9 g / (EQ / 1000)

6.2196 mEq . EQ/1000 = 0.9 g

EQ = 0.9 g / 6.2196×10⁻³ = 144.7 g/mol

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

Learn more about mixture at: https://brainly.com/question/12160179

#SPJ1

The density of the sample of a substance with a mass of 20 g and volume of 5 cm³ will be 4 g/cm³.

Density of a substance can be defined as the measure of the amount of mass which is contained in a unit of volume of that substance. The general trend is that most of the gases are less dense than that of liquids, which are in turn less dense than that of solids, but there are numerous exceptions also present in nature.

The density of a substance can be calculated with the help of the formula:

Density = mass/volume.

Given, Mass of substance = 20g

Volume of substance = 5cm³

Density of the sample = mass of substance/volume of substance = 20g/5cm³ = 4 g/cm³

Therefore, the density of the sample is 4 g/cm³.

Learn more about Density here:

https://brainly.com/question/29775886

#SPJ11

Answer:

the pressure will increase

Adenine is the purine base that forms three hydrogen bonds when binding its complementary nucleotide base.

Purines are a kind of nucleotide base.

They are natural aromatic organic compounds that have nitrogen atoms at positions 1 and 3 in their pyrimidine rings. Purines are nucleotides essential structural elements, which are used to create DNA and RNA.

Pyrimidine and purine are two types of nitrogenous bases found in nucleotides.

A nucleotide consists of a five-carbon sugar, a phosphate group, and a nitrogenous base.

Nitrogenous bases are a type of molecule that includes nitrogen atoms.

Pyrimidines, such as cytosine, thymine, and uracil, have a single ring of carbon and nitrogen atoms.

The purines, adenine and guanine, have a double ring of carbon and nitrogen atoms.

In DNA and RNA, nitrogenous bases are arranged in complementary pairs, and hydrogen bonds link the complementary bases.

Adenine (A) pairs with thymine (T) in DNA and uracil (U) in RNA.

On the other hand, guanine (G) pairs with cytosine (C) in both DNA and RNA.

Adenine forms hydrogen bonds with thymine, and guanine forms hydrogen bonds with cytosine.

The adenine-thymine combination has two hydrogen bonds, while the guanine-cytosine combination has three hydrogen bonds.

learn more about Purines on

https://brainly.com/question/31665013

#SPJ11

The term "atomic theory" is used instead of "atomic hypothesis" because it signifies the evolution and acceptance of the concept over time.

While Democritus initially proposed the idea of atoms in 400 BCE, it was merely a hypothesis without substantial experimental evidence. Over centuries, scientific investigations and advancements led to a deeper understanding of atomic structure and behavior.

The term "atomic theory" acknowledges that the concept of atoms has undergone refinement and modification based on experimental evidence and theoretical developments.

It recognizes that the understanding of atoms has evolved from a speculative hypothesis to a well-established scientific theory supported by extensive experimental observations, mathematical models, and empirical data.

The term "theory" conveys the comprehensive and validated nature of our understanding of atoms, encompassing their complex structures and behavior.

To know more about atomic theory, refer here:

https://brainly.com/question/28853813#

#SPJ11

Answer:In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory.

Explanation:

Answer:

the mass of 2.2 moles of Beryllium chloride is

Explanation:

175.8200004 gram

The greatest wavelength at which a photon may get ionized is 2.294 107 nm. When an atom or molecule acquires or eliminates an energy, the activity of ionization creates ions.

The ionization energy rule is what?

Upon that annual chart, that the very first oxidation number typically climbs towards left to right for each period. The higher nuclear charge results in a closer bond between the outermost electron and the nucleus.

How does ionization work?

Any process by which electrically neutral atoms or molecules are changed into electrically charged atoms or molecules (ions) by the gain or loss of electrons is referred to as ionization in chemistry and physics.

Briefing:

ionization energy= 941kj/mol

ionization energy= 941×1/6.022×10²³

                            =15.62×10⁻²²kj/atom

              E=h∨

               v=15.62×10⁻²²×10³/6.626×10⁻³⁴

                =1.3075×10¹⁰s⁻¹

           λν=c

                  λ=3×10⁸/1.3075×10¹⁰

                   =2.294×10⁻²m

To know more about ionization energy visit:

https://brainly.com/question/28385102

#SPJ4

Answer:

Below

Explanation:

Each mole is Avagadro's Number (6.022 x 10^23 ) molecules

6.022 x 10^23   x 3.54 = 21.32 x 10^23 = 2.132 x 10^24 molecules

When 156.32 g of barium hydroxide is reacted, approximately 142.34 g of aluminum hydroxide can be produced, based on the balanced chemical equation and stoichiometry.

To determine the amount of aluminum hydroxide that can be produced when 156.32 g of barium hydroxide is reacted, we need to consider the balanced chemical equation for the reaction and use stoichiometry.

The balanced chemical equation for the reaction is:

Ba(OH)2 + 2AlCl3 → 2Al(OH)3 + 3BaCl2

From the balanced equation, we can see that for every 1 mole of Ba(OH)2, 2 moles of Al(OH)3 are produced.

First, we need to calculate the number of moles of barium hydroxide (Ba(OH)2) in 156.32 g:

Molar mass of Ba(OH)2 = (137.33 g/mol + 2(16.00 g/mol + 1.01 g/mol)) = 171.34 g/mol

Moles of Ba(OH)2 = mass / molar mass = 156.32 g / 171.34 g/mol = 0.911 mol

Now, using the stoichiometry of the balanced equation, we can determine the moles of aluminum hydroxide (Al(OH)3) produced:

Moles of Al(OH)3 = 2 × Moles of Ba(OH)2 = 2 × 0.911 mol = 1.822 mol

Finally, to convert the moles of aluminum hydroxide to grams, we need to multiply by the molar mass of Al(OH)3:

Molar mass of Al(OH)3 = (26.98 g/mol + 3(16.00 g/mol + 1.01 g/mol)) = 78.00 g/mol

Mass of Al(OH)3 = Moles of Al(OH)3 × molar mass = 1.822 mol × 78.00 g/mol = 142.34 g

Therefore, when 156.32 g of barium hydroxide is reacted, approximately 142.34 g of aluminum hydroxide can be produced.

For more such questions on barium hydroxide visit;

https://brainly.com/question/29344018

#SPJ8

The best kind of prescription for the child is 250 mg/5 ml solution po three times daily.

The term dose has to do with the quantity or amount of the drug that a patient is required take. We must know that a drug is a chemical and being a chemical, there must be a specified amount of it that has to be taken per day.

We know that the dose of the drug that is given to a patient is sometimes in proportion to the degree of symptoms that the patient is feeling. In this case, we can see that the drug is given in more than one dose. We now have to find out the correct dose of the drug that is required in this case.

Let us look at the drug, we are told that a child attending daycare is prescribed 750 mg of an antibiotic for 10 days. The best kind of prescription for the child is 250 mg/5 ml solution po three times daily.

Learn more about dose of a drug:https://brainly.com/question/14992727

#SPJ1

The time that is required to deposit 1.00 g of chromium metal is 30.9 mins.

Faraday's II Law of electrolysis states that if the equal quantity of energy is handed thru extraordinary electrolytes, the loads of ions deposited on the electrodes are without delay proportional to their chemical equivalents.

The chemical equation of the reaction can be represented as follows:

Cr6+ + 6e → Cr

Moles of Cr = mass / molar mass = 1 / 52 = 0.0192 mol

Moles of electrons needed = 6 * moles of Cr = 6 * 0.0192 = 0.1152 mol

Charge needed = moles of e * charge per mole of e = 0.1152 * 96485.33 = 11115.110 C

Now time needed = charge / current = 11115.110 / 6 = 1852.52 seconds = 1852.52 / 60 min = 30.9 min

To learn more about electrolysis check the link below:

https://brainly.com/question/12994141

#SPJ4

The magnitude of the average force the batter exerted is (-0.145 kg * 410 m/s) / 0.045 s.

Newton's second law of motion, which states that force (F) is equal to the change in momentum (Δp) divided by the time interval (Δt):

F = Δp / Δt

The momentum (p) of an object is calculated by multiplying its mass (m) by its velocity (v):

p = m * v

Given:

Mass of the baseball (m) = 0.145 kg

Initial velocity of the baseball (v) = 410 m/s

Time interval (Δt) = 0.045 s

First, calculate the initial momentum (p_initial) of the baseball:

p_initial = m * v

p_initial = 0.145 kg * 410 m/s

Next, calculate the final momentum (p_final) of the baseball. Since the mass of the baseball remains the same, we can use the equation:

p_final = m * v_final

Since the final velocity (v_final) is not given, we assume it is zero (as the baseball comes to rest after being hit). Thus, the final momentum is zero.

Now, calculate the change in momentum (Δp):

Δp = p_final - p_initial

Δp = 0 - p_initial

Δp = -p_initial

Finally, substitute the values into the equation for average force:

F = Δp / Δt

F = (-p_initial) / Δt

F = (-0.145 kg * 410 m/s) / 0.045 s

For more such questions on magnitude

https://brainly.com/question/30560692

#SPJ11

Non-combustible

eg:-glass,water,stone, Portland cement etc ...

Answer:

Noncombustible

Explanation:

So

Some examples are ,glass ,stone

As the excited electron descends to a lower orbit, 3.60 x 10-20 J of energy is released.

Negatively charged subatomic particles called electrons can be free or bonded to an atom. Among the three main types of elements inside an atoms, along with protons and neutrons is an electron that would be linked toward the atom.

A runtime called Electron is used to create desktop apps utilizing web technologies. The project started at GitHub and served as the basis for the Atom text editor. A simplified version of the Chrome web browser called the Chromium Content Module is combined with Node in Electron.

To know more about Electrons visit:

https://brainly.com/question/1255220

#SPJ1

A supersaturated solution (C) is one with a higher concentration than the solubility.

In other words, it contains more solute than the solvent can typically dissolve at a given temperature and pressure. Supersaturated solutions are formed by dissolving a solute in a solvent at a high temperature, and then cooling the solution slowly. As the temperature decreases, the solubility of the solute decreases, but the dissolved solute remains in the solution, resulting in a supersaturated state.

It is important to note that a supersaturated solution is not necessarily in contact with undissolved solid (A), nor does it require more than one solute (B). The key characteristic is the higher concentration of solute than the solvent's solubility allows. Additionally, while heating (D) can be part of the process to create a supersaturated solution, the solution itself is not defined by being heated. Lastly, supersaturated solutions do exist in practice and are not only theoretical (E). They can be unstable and may quickly revert to a saturated state upon disturbance or by seeding with a small crystal of the solute.

Hence, the correct answer is option (C) is one with a higher concentration than the solubility.

Learn more about Supersaturated solutions here: https://brainly.com/question/20536909

#SPJ11

Answer:

You apply the experiment in real life

Explanation:

if im thinking about how im gonna make a big kaboom explosion, I crash the plane and it makes a big kaboom explosion in the real field

make a website and then hire other people and show them the expirment

To generate 5.3 moles of \(N_{5}O_{7}\), roughly 1.595 * \(10^{25}\) molecules of N are required.

To determine the number of molecules of N (nitrogen) needed to produce 5.3 moles of \(N_{5}O_{7}\), we need to consider the stoichiometry of the compound \(N_{5}O_{7}\).

The formula \(N_{5}O_{7}\) indicates that there are five nitrogen atoms (N) in one molecule of \(N_{5}O_{7}\). Therefore, we can use the concept of Avogadro's number to calculate the number of molecules of N required.

Avogadro's number states that there are 6.022 × \(10^{23}\) particles (molecules or atoms) in one mole of any substance. In this case, we need to convert the given quantity of moles (5.3 moles) to the corresponding number of molecules.

First, we calculate the number of moles of N in 5.3 moles of \(N_{5}O_{7}\):

5.3 moles \(N_{5}O_{7}\) × 5 moles N / 1 mole N5O7 = 26.5 moles N

Then, we can convert the moles of N to the number of molecules of N using Avogadro's number:

26.5 moles N × 6.022 × \(10^{23}\) molecules / 1 mole = 1.595 × \(10^{25}\) molecules of N

Therefore, approximately 1.595 × \(10^{25}\) molecules of N are needed to produce 5.3 moles of \(N_{5}O_{7}\).

Know more about Avogadro's number here:

https://brainly.com/question/1513182

#SPJ8

double-replacement reaction

the pH of the given buffer solution is 3.08.

The given buffer solution is made up of 60 mL of 0.25 M HCOOH and 10.0 mL of 0.500 M NaXOOH and we are to determine its pH.

The first step in solving this problem is to determine the moles of each species in the buffer. This can be accomplished by using the following equation:

n(HCOOH) = 0.25 moles/L x 0.060 L = 0.015 moles of HCOOHn

(NaXOOH) = 0.500 moles/L x 0.010 L = 0.005 moles of NaXOOH

Next, we need to calculate the concentration of the buffer:

Concentration of buffer = moles of HCOOH / total volume of buffer= 0.015 moles / (0.060 + 0.010) L = 0.1875 M

Now that we have the concentration of the buffer, we can use the Henderson-Hasselbalch equation to determine the pH:

pH = pKa + log ([A-] / [HA])

where pKa = 3.75 for HCOOHpH = 3.75 + log [(0.005 moles / 0.070 L) / (0.015 moles / 0.070 L)]= 3.75 + log [0.07143 / 0.21428]= 3.75 + (-0.6706)= 3.08

Therefore, the pH of the given buffer solution is 3.08.

learn more about pH here

https://brainly.com/question/172153

#SPJ11

Answer:

It blocks pathogens from getting inside our body.

Explanation:

The skin is the biggest organ, it cover the whole body and organ system from any toxic things.

The dosage of 26mg can be prepared using approximately 1.625 mL of the 40mg in 2.5 mL solution.

The dosage of 22mg can be prepared using approximately 1.222 mL of the 36mg per 2 mL strength solution.

To calculate the dosage using ratio and proportion, we can set up a proportion based on the strength of the solution.

40mg in 2.5 mL solution will be used to prepare a 26mg dosage.

Let X represent the mL of the solution needed to prepare the 26mg dosage.

We can set up the proportion as follows:

40mg/2.5mL = 26mg/X mL

Cross-multiplying and solving for X, we have:

40mg * X mL = 2.5mL * 26mg

40X = 65

X = 65/40

X ≈ 1.625 mL

For the second question:

36mg per 2 mL strength solution is used to prepare 22mg.

Let Y represent the mL of the solution needed to prepare the 22mg dosage.

We can set up the proportion as follows:

36mg/2mL = 22mg/Y mL

Cross-multiplying and solving for Y, we have:

36mg * Y mL = 2mL * 22mg

36Y = 44

Y = 44/36

Y ≈ 1.222 mL

To know more about solution

https://brainly.com/question/1616939

#SPJ11

Answer:

i dont know sorry

Explanation:

Answer:  

Solubility is a property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. The resulting solution is called a saturated solution.

the state of being thick, sticky, and semifluid in consistency, due to internal friction.or a quantity expressing the magnitude of internal friction, as measured by the force per unit area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another.

1.  frequency

the rate at which something occurs or is repeated over a particular period of time or in a given sample.

Ductile: of a metal) able to be drawn out into a thin wire.

able to be deformed without losing toughness; pliable, not brittle

Malleable:(of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.

Combustible:able to catch fire and burn easily.

Radioactive:Radioactivity is the spontaneous emission of radiation in the form of particles or high energy photons resulting from a nuclear reaction. ... A substance that contains unstable atomic nuclei is considered to be radioactive. Radioactive decay is a random or stochastic process that occurs at the level of individual atoms.

Corrosive:t ending to cause corrosion(Corrosion is when a refined metal is naturally converted to a more stable form such as its oxide, hydroxide or sulphide state this leads to deterioration of the material.)

Explanation:

(source: google for all)