octylphenol ethoxylate is a detergent that is commonly used in chemistry laboratories. it is a thick, yellowish liquid. a chemist dissolves a small amount of octylphenol ethoxylate in a liter of benzene, an organic liquid, then adds a small amount of toluene, another organic liquid. identify each component of the solution as a solute or a solvent. benzene is a toluene is a octylphenol ethoxylate is a

The absorbance at 280 nm of a 2.0mg × ml^-1 solution of Protein x = 0.8

Protein x = (0.4 Lmg-1cm-1) (2.0 mgmL-1) × (1)

              =  = 0.8

The body depends heavily on proteins, which are big, complicated molecules. They are crucial for the structure, operation, and control of the body's tissues and organs and carry out the majority of their job within cells.

Proteins are made up of hundreds or thousands of smaller building blocks called amino acids that are linked together in lengthy chains. Proteins are created by combining 20 different types of amino acids.

Each protein has a distinct three-dimensional shape that is based on the amino acid sequence, which also determines the protein's particular function. Combinations of the three DNA building blocks (nucleotides), which are defined by the order of genes, are used to code for amino acids.

Learn more about Proteins

https://brainly.com/question/13448796

#SPJ4

The cake should weigh 265 grams ordinarily. However, it could weigh less.

According to the law of conservation of mass, masses can neither be created nor destroyed during the course of chemical reactions. However, masses can be converted from one form to another.

Going by this law, the mass of the resulting cake from the illustration should be the cumulative mass of the ingredients of the cake.

However, during the process of baking, some mass might have been converted to gas and escaped into the atmosphere. Thus, the final cake may weigh less than the cumulative mass of the ingredients.

In the absence of conversion of mass to gas and no ingredient spillage during the entire process, the mass of the cake should be the cumulative mass of the ingredients.

Thus:

Mass of the cake = 150 + 70 + 45

                            = 265 grams

More on the law of conservation of mass can be found here; https://brainly.com/question/13383562

#SPJ1

Water and alcohol has no colour. Water has no smell but alcohol smell like musty. Salt more dissolve in water as compared to alcohol.

The water is colourless as well as odorless means it has no smell. Water can dissolve salt because the positive ion of water molecules attracts the negative chloride ions and the negative ion of water molecules attracts the positive sodium ions while on the other hand, the alcohol is colourless means it has no colour. The smell of alcohol is musty and sharp. Salt dissolves less in alcohol, because alcohol molecules have less ions as compared to water. Alcohol is non-polar like oil and salt is polar so it does not dissolve or very little in alcohol.

So we can conclude that Water and alcohol has no colour. Water has no smell but alcohol smell like musty. Salt more dissolve in water as compared to alcohol.

Learn more about alcohol here: https://brainly.com/question/947751

#SPJ1

B. Einsteinium

Transuranium elements are the elements after the number 92 in the periodic table.

In the given weigh on a balance and recorded masses 2.25g is the accuracy and precision of the balance

A balance used to weigh quantities to a very precise number, usually up to one milligram and accuracy is the balance related to the measurement uncertainty of each reading.

Here given data is three students are given = 200g weight and record the following masses = 150g, 151g, 150g

We have to calculate accuracy and precision of the balance = ?

So accuracy and precision of the balance = sum of data/no of measurement

Here sum of data means = 150g, 151g, 150g and no of measurement = 200g

accuracy and precision of the balance =  150g+151g+150g/200

accuracy and precision of the balance = 2.25g

Know more about accuracy and precision

https://brainly.com/question/1695768

#SPJ1

A reactive metal can displace HYDROGEN gas either from water or from an aqueous acid.

A MORE reactive metal can also displace the ion of a LESS reactive metal from the solution.

A less reactive metal can be displaced by a more reactive metal (one that produces positive ions more readily). An example of this is a displacement reaction.

The more reactive metal thus enters the solution as a cation, while the cations of the less reactive metal are changed into metal. In their salt solutions, more reactive metals thus displace less reactive metals.

Only when a metal is situated above another metal in the reactivity series may one metal remove another metal from a complex.

Learn more about reactive metal here:

https://brainly.com/question/20570629?referrer=searchResults

#SPJ4

The molar mass of the compound is 67.5 g/mol which chemist has synthesized.

To find the molar mass of the compound,

Using ideal gas law,  PV = nRT and can also be written as PM = dRT.

where,

P refers to the pressure which is measured in atmospheres (atm),

T refers to the temperature which is measured in kelvin (K),

R is the ideal gas law constant ,i.e, 0.0821 atm(L)/mol(K)

M is know as the molar mass (g/mol)  

d is the density (g/L).

Given data :

P = 2.88 atm

d = 7.71 g/L

R = 0.0821 atm(L)/mol(K)

T = 36 C = 36+273 K = 309 K

According to the ideal gas law,

Formula to find the molar mass can be written as -

          M = dRT

                   P

          M = (7.71 x 0.0821 x 309)

                              2.88

          M = 67.83 g

Therefore,

Molecular Formula = ClO₂

The molar mass of ClO₂ = 35.5+2 x 16 = 67.5 g.

To learn more about molar mass,

brainly.com/question/18649516

#SPJ4

Answer:A student drops a bottle of shampoo because his hands were slippery from the shampoo. Other than its slippery feel, what other tests would confirm which type of compound was in the shampoo? Choose the two statements that apply.

A. It tastes bitter.

B. It reacts with metals.

C. It turns red litmus blue.

D. It turns blue litmus red

Explanation: ans B. It reacts with metals. mark me as  brainliest

The average atomic mass in amu of a large sample of the isotope Palomarium- 46:46.00159 amu

The weighted average mass of the atoms in a naturally occurring sample of an element is the average atomic mass, also known as atomic weight.

Unified atomic mass units are typically used to express average masses (u).

Let

46Palomarium = 46.00159 = x%

48Palomarium = 47.98621 = 1-x%

⇒ 46.9939 = (46.00159)x + (47.98621) (1-x)

⇒ 46.9939 = -1.98462x + 47.98621

⇒-0.99231 = -1.98462x

⇒ x = 0.50 = 5.%

and 1-x = 1-0.50 = 50%

avg atomic mass = 46.00159 (0.5) + (47.98621) (0.5)

= 46.9939 amu

To know more about atomic masses, visit:

https://brainly.com/question/17067547

#SPJ4

The mass of gold is 193g.

Density is defined as the mass of a material substance per unit volume. The equation for density is d = M/V, where d stands for density, M for mass, and V for volume. It is generally measured in grams per cubic centimeter. Density provides an easy way to calculate a body's mass from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), whereas the volume is equal to the mass divided by the density (V = M/d).

Now, in the given question,

Density of gold = 19.3 g/cm³

Volume of gold = 10 cm³

Since,  Density = Mass/Volume

Therefore, Mass of gold = Density of gold × Volume of gold

                                        = 19.3g/cm³ × 10 cm³

                                       = 193g.

Hence, the mass of gold is 193g.

Read more about Density:

https://brainly.com/question/3324293

#SPJ1

A problem that is usually posed in the form of a method.

What exactly is the scientific method? What are the stages of a scientific method?

A scientific method is a set of steps designed to assist you in solving problems and answering questions. The scientific method is comprised of the following stages:

In order to apply the rule or law generally: The term "principle" or "law" refers to a thoroughly verified fact pertaining to a scientific finding or phenomenon. Its prediction has proven to be trustworthy.

To know more about the scientific method, visit the given link:

https://brainly.com/question/24215195

#SPJ4

Considering the relationship between groups and periods on the periodic table and electron configuration:

Electronic configuration is the arrangement of the electrons around the nucleus of an atom in orbits or shells or energy levels.

The electronic configuration of atoms depends on the groups and periods which the element belongs to.

The groups in the periodic table refer to the vertical columns in the periodic table while the periods in the periodic table refers to the horizontal rows.

The groups in the periodic table determines how many electrons are found in the outermost shell of the atom of the element.

The periods in the periodic table determine how many electron shells there are in the atom,

Learn more about periods and groups at: https://brainly.com/question/19266854
#SPJ1

Fluorescent bulb is the more efficient one.

An electric bulb which has a filament inside it and the electricity passes through the filament and it get heated an it glows. The condition inside the bulb is vacuum or inert gas. This is an incandescent bulb. they uses a lot of energy.

Fluorescent bulb is a  mercury vapour low pressure, gas discharge lamp which will use less energy and fluoresce to produce visible light. So in this the electric current will cause the gas to get exited and there is a production of UV light which causes the coating on the inside of the lamp to glow..

Fluorescent bulb is the more efficient that the incandescent bulbs. They also have more life span than incandescent bulbs.

Learn more about bulbs here https://brainly.com/question/1738190

#SPJ9

According to Avogadro, one mole of a material consists :

6.022x10∧23 atoms. Avogadro's number is this. Use dimensional analysis to determine the number of atoms present in two moles of sodium.

Na x 2.0 moles

6.022⋅10

23g1

mol=1.20

10.24 Na atoms.

The mass of 6.022 10 23 atoms, molecules, or formula units make up one mole of a material, which is known as the molar mass. This value is given in grammes per mole.

The SI unit for calculating a material's amount is the mole. It is symbolised by the letter mol. The volume of material that includes the same number of distinct things is another name for it. The molar mass of a substance is its mass expressed in grammes per mole.

learn more about molar mass refer

https://brainly.com/question/21334167

#SPJ9

The bond that exists between two oxygen atoms to make the O2 molecule is described as two covalent bonds and two lone pairs of electrons are present on each individual oxygen atom.

A double bond in chemistry is a covalent bond between two atoms that involves four bonding electrons, rather than two as in a single bond.

In the oxygen molecule, O2, the oxygen atoms that make up the molecule are bonded together by sharing two pairs of electrons. Each oxygen atom has 6 valence electrons, if they share two of their valence electrons with each other, they each have 8 valence electrons.

In this way, the so-called octet rule is fulfilled, where atoms gain, lose or share electrons with other atoms to have 8 valence electrons and thus acquire a noble gas configuration.

The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.

Learn more about the atom at: brainly.com/question/17545314

#SPJ4

The electron is a subatomic particle with a negative one elementary charge electric charge. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically regarded to be elementary particles.

For each of the ions listed, identify the total number of electrons for each

You must keep in mind that when an ion bears a positive charge, the number of electrons is lower than the number of protons in order to compute the number of electrons in the positive-charged ion. Therefore, you must subtract the magnitude of charge (which is frequently expressed as a superscript on the right side of the symbol) from the atomic number or proton number in order to obtain the number of electrons.

To know more about Electrons, click on the link below:

https://brainly.com/question/28499666

#SPJ9

Answer:

Covalent bonds are the strongest bonds in nature and under normal biological conditions have to be broken with the help of enzymes. This is due to the even sharing of electrons between the bonded atoms and as with anything equally shared there is no conflict to weaken the arrangement.

Explanation:

Bonding electrons are described as electrons that participate in chemical bonds. Chemical bond, a strong attraction between atoms, ions, or molecules, might be the subject here. Atoms sharing electron pairs form a covalent or molecular connection. An attraction between the atomic orbitals of atoms in a molecule is called a bonding molecular orbital.

Which bonding type results in stronger bonds? What is your evidence?

A covalent bond is created when the difference between two atoms' electronegativities is too small for an electron transfer to occur and produce ions. Bonding electrons are collectively referred to as the electrons that are present between the two nuclei. The "glue" that binds the atoms into molecular structures is the bound pair.

It is the most powerful link. By sharing an electron, the two atoms in such a bond are joined together.

One Hydrogen atom with one valence electron and one Chlorine atom with seven valence electrons, for instance, make up the HCL molecule. In this instance, hydrogen and chlorine share an electron to create a single bond.

To know more about Electron bonding, click on the link below:

https://brainly.com/question/12732708

#SPJ1

An elastic collision is one in which the system does not experience a net loss of kinetic energy as a result of the collision.

To learn more about : elastic collision  

Ref : https://brainly.com/question/7694106

#SPJ9

Answer: What does Resources that control the size a population can reach are known as? a limiting factor

Explanation: A limiting factor is anything that constrains a population's size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources.

The scientific problem that the student is trying to investigate is the boiling point affected by the strength of particle attraction. So the correct option is A.

A liquid partially vaporises into the airspace above it at any temperature up until the vapour the liquid's pressure at that temperature, which is a characteristic value. The vapour pressure rises as the temperature rises, and when the liquid reaches the boiling point, vapour bubbles develop inside the water and come to the surface.

A liquid's boiling point changes depending on the pressure being applied; the normal boiling temperature is the point at which the vapour pressure is comparable to the average atmospheric pressure at sea level (760 mm [29.92 inches] of mercury). Water boils at sea level at 100° C (212° F). Lower boiling point temperatures are seen at greater elevations.

Therefore, the correct option is A.

Read more about boiling point, here

https://brainly.com/question/28203474

#SPJ1

Answer:

It would be C, Potential energy, kinetic.

Explanation:

Emperical formula and molecular formula of compound X, both will be same that is C₅H₁₀O

An Empirical formula is the chemical formula of a compound that gives the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms in a compound .

CₓHᵧOᶻ + nO₂ ---> CO₂ + H₂O

Moles of CO₂= 1.10/44 = 0.025 ( it comes from the Mass of CO₂ divided by Mr of CO₂) 
moles of H₂O=  0.45/18 = 0.025 (Mass of H₂O divided by Mr of H₂O)
moles of compound X= 0.43/86 = 0.005 (Mass of X divided by Mr of X)

So we get the ratio  = 1:5:5, respectively  ratio of X burned, to CO₂ produced, to H₂O produced .

So the equation here becomes like this

=> CₓHᵧOᶻ + nO₂ ---> 5CO₂ + 5H₂O

 Since ratio of compound X burned to CO₂ produced is 1:5, must be 5 carbon atoms in X if 5CO₂ produced. 
Since ratio of compound  X burned to H₂O produced is also 1:5, must be 10 hydrogen atoms in X if 5H₂O produced.

so the Emperical formula becomes C₅H₁₀O

learn more about Emperical formula here-

https://brainly.com/question/13058832

#SPJ9

Answer:

The answer in standard form is 5200

Explanation:

It's extremely easy once you learn how to do it! Let me teach you! To change a number from scientific notation to standard form, move the decimal point to the left if you have a negative exponent, and to the right if you have a positive exponent. For example 5.2 × 10^-3 would be 0.0052 because the exponent is negative, so you over the decimal to the right however many times it says (whatever number the exponent is is how many places you move the decimal). So, the decimal is moved to the left 3 times, stopping it at 0.0052. And positive exponents are done the same way: only you move to the right and you will not get a decimal answer (its an actual number). You should move the point as many times as the exponent indicates. You answer should ever include the power of ten, because that only makes another problem to convert to standard form.

Hope that helps! Have an amazing rest of your day! Please award me Brainliest!! :)

The solvent we use for extraction is diethyl ether and the solvent we use for the recrystallization is acetone.

Trimyristin is more soluble in diethyl ether rather than in acetone. In order to get extracted from the nutmeg, Trimyristin has to be soluble in the solvent.

Why is Trimyristin more soluble in diethyl ether?

To learn more about extraction and recrystallization visit:

https://brainly.com/question/12910778

#SPJ4

Answer:

i think it might be diseased people. but im not sure

Explanation:

w/v percentage of a dextrose solution with an osmolarity of 100 mosmol/L would be 1.9817%.

Because dextrose does not disassociate in an aqueous solution, the osmolarity of the solution is equal to its molarity, so we have a 100 mmol/L (or 100 mM or 0.1 M) dextrose solution. That means that, in 100 mL (0.1 L) of this solution, we have:

c = n/V, so n = c x V = 0.1 M x 0.1 L = 0.01 mol

n = m/M, so m = n x M = 0.01 mol x 198.17 g/mol = 1.9817 g of dextrose

w/v percentage would be:

100% x 1.9817 (g) / 100 (mL) = 1.9817%

You can learn more about osmolarity here:
brainly.com/question/13597129

#SPJ4

A17.90-gram sample of iron is heated in the presence of excess iodine a metal iodide is formed and the empirical formula of the compound is Fe1I2.

The empirical formula, which is defined as the ratio of subscripts of the least whole number of the elements present in the formula, is the simplest formula for a compound.

Mass of Fe= 17.90 g

Mass of metal iodide = 99.24 g

Now we have to calculate the mass of iodide.

Mass of I = Mass of metal iodide - Mass of Fe

Mass of I = 99.24 - 17.90

Mass of I = 81.34 g

To formulate the empirical formula, we need to follow some steps:

First, we convert the given masses into moles.

Moles of Fe = Given mass/ molar mass = 17.90/55.93 = 0.32 moles

Moles of I = given mass/ molar mass = 81.34/126 = 0.64 moles

To calculate the mole ratio, we divide each value by the smallest number of moles that is 0.32 moles.

For Fe = 0.32/0.32 = 1

For I = 0.64/0.32 = 2

Hence the mole ratio is

Fe:I = 1:2

Thus, the empirical formula would be Fe1I2

To know more about empirical formula, visit:

https://brainly.com/question/14044066

#SPJ4

Question: GoodMorning: ) ✨ Explain why there are different colors of visible light ?

Answer: WAVELENGTHS OF VISIBLE LIGHT

As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength. Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.Light is made up of different wavelengths, or colors, and white light is a combination of all of them. When a ray of white sunlight hits a patch of beach ball, the paint absorbs most of the wavelengths. It reflects the rest. For example, if the patch is blue, it reflects the blue wavelengths and absorbs all the others.

Explanation: Here are the 7 from shortest to longest wavelength.

Violet - shortest wavelength, around 400-420 nanometers with highest frequency. ...

Indigo - 420 - 440 nm.

Blue - 440 - 490 nm.

Green - 490 - 570 nm.

Yellow - 570 - 585 nm.

Orange - 585 - 620 nm.

Red - longest wavelength, at around 620 - 780 nanometers with lowest frequency. Electromagnetic waves have many different wavelengths and frequencies that span a range known as the electromagnetic spectrum (Fig. 1.1). Light is a narrow range of electromagnetic waves that the eye can detect. Light of different wavelengths produces different perceptions of color.

Have An Awesome Day/Night<3

A biome is a biogeographical unit made up of a biological community that has developed as a result of its physical surroundings and a common local climate.

1) The majors two characteristics that determines the terrestrial biomes are rainfall and temperature.

2) Latitude, which runs from 0° at the equator to 90° (North or South) at the poles, is a geographic coordinate that describes the north-south position of a point on the surface of the Earth.

Since the latitude degrees are parallel, the distance between each degree is constant

3) Winter, spring, summer, and autumn are the four seasons that alternate in temperate areas.

A area or climate that is never very hot or extremely cold is said to as temperate climate.

4) The polar climate are places where the climate is extremally cold and the temperature is below zero degrees.

5) The two majors characteristics of aquatic biome are water bodies and sunlight.

6)  marine regions such as oceans have high salinity.

7) Fresh water have low salinity .

8) Deep water plants have short plants because less amount of sunlight reaches under water.

9) Shallow water have medium sized of plants because the amount of sunlight reaches to the plant but enough amount is reached.

It is challenging to categorize the entire planet into a small number of ecological zones, in part because to the minor variances that exist everywhere on the planet and the gradual transition from one biome to another.

Lean more about Biomes here

https://brainly.com/question/1930321

#SPJ9

The order of decreasing rate of effusion of gases is as follows :Hydrogen, Neon, Oxygen, and Argon.

Rate of Effusion :

The rate of effusion is inversely proportional to the square root of the molecular mass and the rate of effusion of a gas is directly proportional to the speed of the movement of gas.

It can be mathematically expressed as

         rate of effusion ∝   1  

                                       √M  

This means that if two gases are at same pressure and temperature, the ratio of their rate of effusion is inversely proportional to ratio of square roots of mass. So, lighter gases will diffuse more quickly. The molecular masses of the gases are,

molecular mass of H₂= 2 g

molecular mass of O₂ =32 g

molecular mass of Ar = 39.94 g

molecular mass of Ne = 20.17 g

If we take ratios of these, for example between hydrogen and oxygen -

rate of effusion of hydrogen = √32 = 4

rate of diffusion of oxygen        √2       1

Hydrogen effuses four times more rapidly than oxygen.

The rate of effusion is highest in Hydrogen and lowest in Argon.

The order of decreasing rate of effusion of gases is as follows:

Hydrogen, Neon, Oxygen, and Argon.

To learn more about rate of effusion,

brainly.com/question/28601637

#SPJ4