Determine the boiling point of a 3.70 m solution of phenol in benzene. Benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C•kg/mol.

Answer:

Six-membered cyclic hemiacetals and five-membered cyclic hemiacetals are called, respectively, mannoses and xyloses.

please give me brainliest

I will offer a broad response based on the common equation for photosynthesis because precise formulae or experiments are not provided:

C6H12O6 + 6O2 = 6CO2 + 6H2O + sunshine.

The total mass of the reactants and products in each chemical reaction must match, according to the Law of Conservation of Mass. This means that in the case of photosynthesis, the number of atoms of each element present in the reactants and the number present in the products must be equal. One molecule of glucose (C6H12O6) and six molecules of oxygen (O2) are present on the reactant side of the equation, which contains six molecules of carbon dioxide (CO2) and six molecules of water (H2O). It is evident that the equation is balanced and adheres to the Law of Conservation of Mass by counting the number of atoms of each element on both sides of the equation.

learn more about photosynthesis here:

https://brainly.com/question/29764662

#SPJ4

I would say C.) It has been updated and modified based on the new data

The chance of both electrons being found on one atom cannot be determined without the specific form of the normalized valence bond wave function. More information is required to calculate the probability.

To determine the chance that both electrons of the bond will be found on one atom during 1000 inspections, we need to know the specific form of the normalized valence bond wave function. This function describes the electron distribution in the molecule and is crucial for calculating probabilities related to electron positions. Once we have the wave function, we can square its amplitude to find the probability density for a particular electron configuration.

Then, we can use this probability to determine the chance of observing both electrons on one atom during 1000 inspections. Unfortunately, without the form of the wave function, it's impossible to provide an accurate probability for this scenario.

To know more about the electrons visit:

https://brainly.com/question/30025165

#SPJ11

Answer: 15910 meters

Explanation:

1 kilometer = 1000 meters

15.91 kilometers * 1000 meters/1 kilometer =

15.91 * 1000/1=

15.91*1000=15910 meters

Option A,  Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color.

Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color. This is because when Ninhydrin reacts with an amino acid it forms a complex with the nitrogen in the amino group, and this complex is blue in color. It is also commonly used in forensic science to detect fingerprints, as fingerprints contain amino acids from the oils and sweat on the skin. The blue coloration of the skin is an indication of the presence of amino acids, which are found in many biological molecules such as proteins and enzymes.

Learn more about amino acid here:

https://brainly.com/question/24106148

#SPJ4

The major organic product obtained from the following sequence of reactions is option b. 2 OCH3.

Explanation:
The sequence of reactions is as follows:
1. The first step is the reaction of OH with OCH3 to form Loom 2 OCH.
2. The next step is the reaction of Loom 2 OCH with CH3ONa to form CH3OH and OCH.
3. The final step is the reaction of CH3OH and OCH with OCH to form the final product, 2 OCH3.
Therefore, the major organic product obtained from the sequence of reactions is 2 OCH3, which is option b.
I hope this helps! Let me know if you have any further questions.

Learn more about reaction: https://brainly.com/question/11231920

#SPJ11

Answer:  Shaun must consume 6 more g of protein to reach the required amount.

Explanation:

Given : Recommended amount of protein = 200 calories

Now 4 calories = 1 gram of protein

Thus 200 calories = \(\frac{1}{4}\times 200=50\) g of protein.

Calories consumed per day by Shaun = 176 calories

176 calories =  \(\frac{1}{4}\times 176=44\) g of protein.

Thus Shaun need to consume = (50-44) g = 6 of protein to reach the required amount.

Shaun must consume 6 more g of protein to reach the required amount.

Answer:

Explanation:

To round the number to 3 significant figures, look at the first 4 digits: 3545 which will round to 355. The number in 3 significant figures will be 3,550,000.

\(\\ \sf\Rrightarrow 3545530\)

\(\\ \sf\Rrightarrow 354553\)

\(\\ \sf\Rrightarrow 35455\)

\(\\ \sf\Rrightarrow 3545\)

\(\\ \sf\Rrightarrow 355\)

Among the options provided, the correct order of increasing molar entropy at 298 K is: b. SO < CO < NO

Sulfur dioxide (SO2) has the fewest atoms among the given substances, with three atoms in each molecule. It has relatively lower molecular complexity and fewer degrees of freedom for movement, resulting in lower molar entropy compared to the other two compounds.

Carbon monoxide (CO) contains two atoms in each molecule. It has slightly greater molecular complexity and more freedom of movement compared to sulfur dioxide. Therefore, CO has a higher molar entropy than SO2 but lower than NO.

Nitric oxide (NO) consists of two atoms in each molecule, similar to carbon monoxide. However, NO has a higher molar entropy compared to CO because of its increased molecular complexity and the presence of an unpaired electron, which allows for additional degrees of freedom and contributes to higher entropy.

To learn more about molecule, click here: brainly.com/question/15839445

#SPJ11

According to the law of conservation of mass, Billy should have 12 grams after the experiment is finished.

Billy starts with 12 grams of sodium hydroxide as part of an experiment.

According to the law of conservation of mass, matter is not created not destroyed over the course of physical or chemical changes.

Thus, if he starts with 12 grams before the experiment, he must end with 12 grams after the experiment.

According to the law of conservation of mass, Billy should have 12 grams after the experiment is finished.

Learn more: https://brainly.com/question/24996173

Answer:

23,900 joules

Explanation:

plato answer

Answer:

23,900 joules

Explanation:

Edmentum

The chemical equation for O2 binding to haemoglobin to form oxyhemoglobin can be written as follows:

Hb + 4O2 ⇌ Hb(O2)4

In this equation, Hb represents hemoglobin, which is a protein found in red blood cells that is responsible for binding to oxygen and transporting it throughout the body. O2 represents oxygen molecules that are present in the surrounding environment. When these oxygen molecules come into contact with haemoglobin, they bind to it to form oxyhaemoglobin, which is a bright red-colored compound.

The reaction is reversible, meaning that oxyhemoglobin can release the oxygen molecules when it reaches the tissues in the body that require oxygen. This process is facilitated by changes in the shape of the haemoglobin molecule, which are triggered by factors such as changes in pH, temperature, and carbon dioxide levels.

Overall, the binding of oxygen to hemoglobin is a critical process that ensures that oxygen is efficiently transported to the tissues in the body where it is needed for cellular respiration and energy production.

Learn more about haemoglobin here,https://brainly.com/question/24172325

#SPJ11

Answer:

There are nine major kinds of natural resources found on the planet Earth, and all these nine major resources come under two categories, that is, renewable and nonrenewable. The renewable resources refer to the resources that get regenerated again and again over a short time duration. These include five major resources, that is, wind, solar, hydro, geothermal, and biomass.  

On the other hand, nonrenewable energy resources are the ones that are present in a very limited amount, as it takes a very long time to regenerate again. The general kinds of nonrenewable energy resources are nuclear, coal, oil, and natural gas.  

Hence, biomass, solar, and geothermal energy comes under the renewable resources category, and coal, natural gas, and oil come under renewable resources category.  

Answer: the verified answer from an expert.

Explanation:

The probability that the sample mean amount contained is less than 42.945 grams is 0.41 or 41%.

In this question, we need to use the concept of the sampling distribution of the mean. We know that the energy bar's mean amount contained is 43 grams with a standard deviation of 0.5 grams. If a sample of 4 energy bars is selected, we want to find the probability that the sample mean amount contained is less than 42.945 grams.

The sample size is 4, which is considered a small sample. Hence, we cannot use the normal distribution and instead will use the t-distribution. To find the t-score, we can use the following formula:

\($$t = \frac{\bar{x} - \mu}{s/\sqrt{n}}$$\)

where \($\bar{x}$\) is the sample mean,

\($\mu$\) is the population mean,\($s$\) is the sample standard deviation,

and\($n$\)is the sample size. Substituting the given values,

we get\(:$$t = \frac{42.945 - 43}{0.5/\sqrt{4}}$$\)

Simplifying this, we get:\($$t = \frac{-0.055}{0.25} = -0.22$$\)

Using a t-distribution table with 3 degrees of freedom (n - 1), we find that the probability of getting a t-score less than -0.22 is approximately 0.41.

Therefore, the probability that the sample mean amount contained is less than 42.945 grams is 0.41 or 41%.

For more such question on probability visit:

https://brainly.com/question/25908329

#SPJ8

The question that Kelsey asks is to identify a similarity between a tundra and desert biome is Which biomes have a large daily change in temperature?. The correct option is c.

A significant, naturally occurring community of plants and animals living in a forest or tundra.

Researchers can identify a biome by defining the range of temperatures, the kind of soil, and the amount of light and water that are distinctive to a location. These factors create niches for particular species.

Therefore, the correct option is c. Which biomes have a large daily change in temperature?

To learn more about a biome, refer to the link:

https://brainly.com/question/11491362

#SPJ9

Answer:

B. Schleiden

Explanation:

i just took the test

Answer:hooke

Explanation:me when your mom

The chemist should use 30 liters of the 20% solution, 20 liters of the 30% solution, and 40 liters of the 60% solution to obtain a mixture of 90 liters containing 40% acid.

Let's denote the number of liters of the 20% solution as x, the number of liters of the 30% solution as y, and the number of liters of the 60% solution as z.

According to the problem, we have the following information:

The total volume of the mixture is 90 liters: x + y + z = 90.

The desired percentage of acid solution in the mixture is 40%: (0.20x + 0.30y + 0.60z) / 90 = 0.40.

The chemist wants to use 2 times as much of the 60% solution as the 30% solution: z = 2y.

Now, we can solve these equations simultaneously to find the values of x, y, and z.

From equation 3, we have z = 2y.

Substituting this into equation 1, we get:

x + y + 2y = 90

x + 3y = 90 (equation 4)

From equation 2, we have:

(0.20x + 0.30y + 0.60z) / 90 = 0.40

Multiplying both sides by 90, we get:

0.20x + 0.30y + 0.60z = 36

0.20x + 0.30y + 0.60(2y) = 36 (since z = 2y)

0.20x + 0.30y + 1.20y = 36

0.20x + 1.50y = 36 (equation 5)

Now, we can solve equations 4 and 5 simultaneously to find the values of x and y.

Multiplying equation 4 by 0.20, we get:

0.20(x + 3y) = 0.20(90)

0.20x + 0.60y = 18

Subtracting this from equation 5, we eliminate x and solve for y:

0.20x + 1.50y - (0.20x + 0.60y) = 36 - 18

0.90y = 18

y = 18 / 0.90

y = 20

Substituting this value of y back into equation 4, we find:

x + 3y = 90

x + 3(20) = 90

x + 60 = 90

x = 90 - 60

x = 30

Since z = 2y, we have:

z = 2(20)

z = 40

Therefore, the chemist should use 30 liters of the 20% solution, 20 liters of the 30% solution, and 40 liters of the 60% solution to obtain a mixture of 90 liters containing 40% acid.

To know more about acid solutions:

https://brainly.com/question/28982585

#SPJ4

The process of spectroscopy determines a substance's physical or chemical identity with as near absolute certainty as existing analytical techniques will permit.

Spectroscopy is the study of the interaction of electromagnetic radiation with matter and is a crucial tool in chemical analysis. By studying the spectrum of a substance (the way it absorbs, emits, or reflects light), spectroscopy can provide information about the composition, structure, and properties of the substance, thereby allowing for its identification with high accuracy.

Spectroscopy is a broad and interdisciplinary field that encompasses many different techniques for studying the interaction of electromagnetic radiation with matter. It plays a crucial role in various areas of science, including physics, chemistry, biology, and materials science. Spectroscopy provides information about the composition, structure, and properties of substances by analyzing the way they interact with light.

Learn more about spectrum here:

https://brainly.com/question/6836691

#SPJ4

The right response is:

C. The number of protons in an atom is equal to the period numbers.

The periodic table's period numbers represent the number of electron shells or energy levels that an atom has. The number of electrons that can be stored in each energy level varies. A substance's place in the periodic table and atomic number are both determined by the number of protons it has. The number of electrons in the outermost shell rises by one as the atomic number moves from left to right during a period, giving rise to comparable chemical properties for elements in the same period. Across a period, the number of valence electrons also rises by one, but it is not the same as the period number. The size of an atom or the number of orbital rings do not match the period number. either

learn more about protons here:

https://brainly.com/question/1252435

#SPJ4

There is a law called conservation of energy which states that energy can neither be created nor be destroyed. It can be only transferred from one form to another form. Therefore, the correct option is option B.

Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy can be transferred in two forms that are by doing work or by transferring heat.

Heat can be transferred by three ways conduction, convention and radiation. In conduction, when two object are in direct contact, transfer of molecules takes place. Kinetic energy is converted into thermal energy while  he practices his guitar.

Therefore, the correct option is option B.

Learn more about energy transfer, here:

https://brainly.com/question/18649915

#SPJ1

The Ca2+ concentration in a groundwater that is in equilibrium with calcite and has a PCO2 of 10-2.5 (atm) is 1.6 × 10-3 M.

The equilibrium expression for the dissolution of calcite (CaCO3) in water, assuming that CO2 is the only acidic gas present, is : CaCO3(s) + H2O + CO2(g) ↔ Ca2+(aq) + 2HCO3-(aq)

The equation for the relationship between the PCO2 of a gas and the concentration of dissolved CO2 in a solution in equilibrium with the gas is as follows : PCO2 = K(H2CO3) × [H2CO3] where,

K(H2CO3) is the Henry's law constant for CO2

H2CO3 is the concentration of dissolved CO2 in equilibrium with the gas.

We can estimate the concentration of H2CO3 as follows :

H2CO3 = α(CO2) × PCO2 where α(CO2) is the solubility coefficient of CO2 in water, which is a function of temperature, pressure, and salinity.

To solve the problem, we need to know the values of the following constants :

K(H2CO3) at 25 °C is 1.20 × 10-3 atm/(mol/L).

α(CO2) at 25 °C is 3.37 × 10-2 mol/L/atm.

Substitute the values into the equation :

PCO2 = K(H2CO3) × [H2CO3]10-2.5 atm = (1.20 × 10-3 atm/(mol/L)) × [H2CO3]

H2CO3 = (10-2.5 atm) / (1.20 × 10-3 atm/(mol/L)) = 8.33 × 10-3 M

Substitute the value of H2CO3 into the equilibrium expression and solve for the concentration of Ca2+ :

Ksp = [Ca2+][HCO3-]2 = 4.86 × 10-9

Ksp = [Ca2+][HCO3-]2[Ca2+] = Ksp / [HCO3-]2[Ca2+] = (4.86 × 10-9) / (8.33 × 10-3)2 = 1.6 × 10-3 M

Therefore, the Ca2+ concentration in a groundwater that is in equilibrium with calcite and has a PCO2 of 10-2.5 (atm) is 1.6 × 10-3 M.

To learn more about concentration :

https://brainly.com/question/17206790

#SPJ11

A hypothesis, plan and design an experiment to determine whether substance A is an oxidizing agent may be substance A receives electrons in redox reactions, which is determined by observing the level of ATP in response to the presence of this substance across the inner mitochondrial membrane.

An oxidizing agent can be defined as any substance that receives electrons in an oxide reduction reaction, which can be verified as a step of cellular respiration to produce ATP.

Therefore, with this data, we can see that an oxidizing agent receives electrons and this can be determined in cellular respiration due to the production of ATP.

Learn more about oxidizing agents here:

https://brainly.com/question/10726618

#SPJ1

Answer:

42.5 amu

Explanation:

Using the ideal gas law equation;

PV = nRT

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question;

mass = 1.9g

T = 27°C = 27 + 273 = 300K

P = 1.1atm

V = 1L

n = ?

PV = nRT

1.1 × 1 = n × 0.0821 × 300

1.1 = 24.63n

n = 1.1/24.63

n = 0.045mol

Mole = mass/molecular mass

0.045 = 1.9/M.M

M.M = 1.9/0.045

M.M = 42.54amu

In the chemical reaction of the Space Shuttle;

A chemical reaction is a procedure that results in the conversion of one group of chemical components into another.

Chemical reactions can frequently be represented by a chemical equation and include changes that simply affect the locations of electrons in the formation and breakage of chemical bonds between atoms, with no change to the nuclei (i.e., no change to the elements present).

The substances that undergo change are reactants, while the new substances formed are called products.

An example of a chemical reaction is described below:

The Space Shuttle program sent astronauts on 135 missions using a fleet of five shuttles between 1981 and 2011. The engines of each shuttle, like other modern rocket engines, used liquid hydrogen as fuel. When liquid hydrogen combines with liquid oxygen, an enormous amount of energy is released, along with water vapor. The shuttles used this energy to launch into space.

Learn more about chemical reactions at:https://brainly.com/question/25769000

#SPJ1

The chemical equation for the reaction of Sn2(aq) to Sn4(aq) in an acidic or basic solution is:Sn2(aq) + 2e- → Sn4(aq)

What is the chemical equation for the reaction of Sn2(aq) to Sn4(aq) in an acidic or basic solution?

In this reaction, Sn2(aq) is being oxidized to Sn4(aq) by losing two electrons (2e-). The oxidation state of Sn increases from +2 to +4.

It's important to note that the phases of the substances involved in the reaction are not specified in the question.

However, based on the naming conventions, "(aq)" indicates that the substances are in aqueous solution, meaning they are dissolved in water.

Learn more about chemical equation

brainly.com/question/28294176

#SPJ11

Reactions that will not produce a precipitate from aqueous solution are those that involve ions that are soluble in water. These include:

- AgNO3 (silver nitrate)
- FeSO4 (iron(II) sulfate)
- Na2CO3 (sodium carbonate)
- ZnCl2 (zinc chloride)
- (NH4)2S (ammonium sulfide)
- NaBr (sodium bromide)
- Al2(SO4)3 (aluminum sulfate)

Reactions that will produce a precipitate from aqueous solution include:

- Ba(OH)2 (barium hydroxide)
- Pb(NO3)2 (lead(II) nitrate)

Note: KI (potassium iodide) can also produce a precipitate, depending on the conditions of the reaction.

To know more about

https://brainly.com/question/14097392#

#SPJ11

Answer:

300 mL

Explanation:

We can use the formula:

density = mass/volume

to find the volume of the glycerol sample. Rearranging this formula, we get:

volume = mass/density

Substituting the given values, we have:

volume = 378 g / 1.26 g/mL = 300 mL

Therefore, the volume of the glycerol sample is 300 mL.

The mass of the displaced fluid can be expressed in terms of the density and its volume, m = ρV. The fluid displaced has a weight W = mg, where g is acceleration due to gravity. Therefore, the weight of the displaced fluid can be expressed as W = ρVg.