Calculate the frequency of light that corresponds to the following wavelengths
in a vacuum.
a. 200 nm
b. 30 pm
c. 10 km

When water is added to a compound in a chemical equation, a new compound can be formed via hydrolysis.

It refers to any chemical process when a water molecule breaks one or more chemical bonds. When water is the nucleophile, the phrase is used generically to refer to substitution, elimination, and solvation processes.

The cleavage of biomolecules known as biological hydrolysis occurs when a water molecule is consumed in order to cause the division of a bigger molecule into its component parts. Scarification is the process of hydrolyzing a carbohydrate into its individual sugar molecules, as occurs when sucrose is broken down into glucose and fructose.

A condensation reaction, in which two molecules combine to form a bigger one and expel a water molecule, can be reversed by a hydrolysis reaction. Thus, condensation builds up by removing water, but hydrolysis breaks down by adding water.

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Analytical chemist analyses show that a sample of acetic acid contains 2.4 moles of carbon. The number of moles of hydrogen in the sample is 5.75 moles.

The mole is a SI unit of measurement that is used to calculate the quantity of any substance. Mole can be calculated by dividing the mass by the molar mass.

Acetic acid is a colorless liquid, with a pungent smell.

The formula of acetic acid is CH₃COOH

For every 12 moles of hydrogen, there's 1 mole of oxygen.

2.4 / 12 = 0.2.

Thus,  therefore, there are 5.75 moles of oxygen in the sample.

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Answer:

First, I will convert from grams to moles. This will give me approximately 4.032 moles of carbon, 6.740 moles of hydrogen, and 3.344 moles of oxygen. Then, I will calculate the mole ratio, using whole numbers. I must also identify the least amount of moles in an element for this step, which is oxygen at 3.344 moles.

Oxygen = 3.344/3.344 = 1

Carbon = 4.032/3.344 = 1

Hydrogen = 6.740/3.344 = 2

The empirical formula will be COH2.

Now that we have the molar mass of the molecular formula, we can calculate for the molecular formula. First, we will begin by discovering the molar mass of the empirical formula, which will be C molar mass x 1 + O molar mass x 1 + H molar mass x 2. That will be equal to 60.949. After that, we can divide the molecular mass by the empirical formula molar mass, giving us approximately 3. Now we will multiply the empirical formula by 3, giving us our molecular formula, which will be equal to C3O3H6.

The given element has 18(Ar)+1+5=24 electrons i.e., the element is Cr. Thus the Cr atom has 6 unpaired electrons.

In atomic physics and quantum chemistry, the electron configuration refers to how an atom's or molecule's electrons are arranged in their respective orbitals.

The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also known as electronic structure or electron configuration.

The electron configuration is used to describe an atom's ground state orbitals, but it may also be used to depict an atom that has ionised into a cation or anion by making up for any lost or gained electrons in the orbitals after it.

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The given element has 18(Ar)+1+5=24 electrons i.e., the element is Cr.

Thus the Cr atom has 6 unpaired electrons.

What's electronic configuration?

In atomic physics and quantum chemistry, the electron configuration refers to how an atom's or molecule's electrons are arranged in their respective orbitals.The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also referred to as electronic structure or electron configuration.

Commonly, the electron configuration is employed to describe the orbitals of an atom in its ground state, but it also can be used to represent an atom that has ionized into a cation or anion by compensating with the loss of or gain of electrons in their subsequent orbitals.

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Answer: Mass number is 15

Explanation:

Mass number of an atom is the sum or total number of protons and neutrons present in the atom. It is represnted by the letter A

The Atomic number (Z) of an atom is defined as the number of protons in an atom and it is equal to the number of electrons present in the atom.

A= n + p

where n is the number of neutrons and p is the number of protons present in the atom

Z = p = e

Where p is the number of protons and e is the number of electrons present in the atom

Z for oxygen atom is 8

So, Z = p = 8 for oxygen atom

If n = 7

then A for oxygen atom with 7 neutrons is given by

A= n + p = 8+7 = 15.

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There are 180 grams of glucose in 1 liter of a 1 M solution.

Blood sugar, often known as glucose, is the main sugar found in your blood. It comes from the food you eat and is used as your body's main energy source. Your blood supplies glucose to all of the cells in your body, which then uses it as fuel.

Diabetes is a disorder when your blood sugar levels are too high.

moles = volume x molarity

moles = 1 L x 1 mol/L = 1 mol

mass = moles x molecular weight

mass = 1 mol x 180 g/mol = 180 g(we know that 180 daltons = 180 g/mol)

Therefore, 1 litre of a 1 M solution has 180 grammes of glucose.

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There are 180 grams of glucose in 1 liter of a 1 M solution.

Calculating:

moles = volume x molarity moles

= 1 L x 1 mol/L = 1 mole mass

= moles x molecular weight mass

= 1 mol x 180 g/mol = 180 g(we know that 180 daltons = 180 g/mol)

Therefore, 1 litre of a 1 M solution has 180 grams of glucose

What can we know about glucose?

Blood sugar, often referred to as glucose, is that the main sugar found in your blood. It comes from the food you eat and is employed as your body's main energy source. Your blood supplies glucose to all or any of the cells in your body, which then uses it as fuel.

Diabetes may be a disorder when your blood sugar levels are too high..

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Answer:

electrolytes

Explanation:

Answer:

-182

Explanation:

according to the table it's the answer

According to forces of attraction and given data the substance with lowest melting point is that one with -182°C.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.Thus,the substance with lowest melting point is that one with -182°C.

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Ions are any molecules that have a charge. (positive or negative.) Group 1 atoms have 1 valence electron, so their ions are formed by giving away one electron. Group 7 atoms have 7 valence electrons, so their ions are formed by gaining one electron. This process gives the atom a full shell of 8, which makes it stabilized.

The mass ratio (Mass of Q/ Mass of A) of the compound A₂Q₃ is 0.861.

Given,

The mass ratio (mass Q)/(mass A) for AQ is 0.574  

We have to find the mass ratio (mass Q)/(mass A) of A₂Q₃.

The mass ratio for  A₂Q₃ is

Mass of Q/ Mass of A = 3 × mass Q/ 2 × mass A

Or, Mass of Q/ Mass of A = (3/2) × (mass Q/ mass A)

Or, Mass of Q/ Mass of A = (3/2) × 0.574

Or,  Mass of Q/ Mass of A = 0.861.

Therefore, the mass ratio for (Mass of Q/ Mass of A) for A₂Q₃ is 0.861.

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The ionic compound sodium chloride, also referred to as salt, has the chemical formula NaCl, which denotes a 1:1 ratio of the ions sodium and chloride. The molar weights of 39.34 g Na and 60.66 g Cl in 100 g of NaCl are 22.99 and 35.45 g/mol, respectively.

If 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction?

116.89 g – 45.98 = 70.91 g of chlorine must have been used.

The characteristics of sodium and chlorine are as follows:

The characteristics of the chemical sodium chloride are as follows:

In light of this, it may be said that sodium chloride possesses wholly unique properties from those of sodium and chlorine.

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We use laundry detergent as a liquid or powder because powder and liquid detergents have more enzymes.

What is detergent?

When present in diluted solutions, a surfactant or combination of surfactants has the ability to clean.There are many different types of detergents; one popular family is the alkylbenzene sulfonates, which are soap-like substances that are more soluble in hard water because the polar sulfonate in detergents is less likely to bind to calcium and other ions found in hard water than the polar carboxylate in soap.

Detergents in both powder and liquid form contain additional enzymes and surfactants that break down grease and slime on clothing. Additionally, because the molecules of liquid and powder soaps can move more freely than those of solid bar soap, it is simpler for them to function as nonionic surfactants.

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The concentration gradients are established and maintained by the sodium potassium - potassium exchange pump is the concentration of potassium (k+) is found higher inside the cell (neuron) and the concentration of sodium (Na+) is found higher outside the cell.

The sodium - potassium pump is an active transport that exchange sodium ions for potassium ions.Active transport is the energy - requiring process of pumping molecules and ions across membranes , against concentration gradient.

To move molecules against the concentration gradient , carrier protein is needed.The Na / K+ pump use the energy of ATP molecule to exchange the ions.

The Na+ / K+ Pump goes through cycles to maintain a negative membrane potential.Three sodium ions exit the cell while two potassium ion enters in the cell for every single ATP consumed.

Thus , the sodium - potassium pump maintains the gradient of high concentration of N+ extracellularly and high level of K+ intracellularly.

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Answer:

34.4

Explanation:

You would divide the mg by 1000 to get the number of grams.

3.733mol potassium ions are in 5.48 g of potassium sulfate: k2so4

The molar quantity of potassium sulfate:

Here 5.48 g of potassium sulfate and molecular weight of potassium sulfate is 174.27 g/mol  are given so  5.48 g / 174.27 g/mol = 0.031mol

0.031mol potassium sulfate, there are 2×0.031=0.062mol with respect to potassium ion

we multiply this molar quantity by avagadro's no

avagadro's no=6.022×10²³

0.062×6.022×10²³=3.733mol

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Answer:

Same amount of liquid and take up same amount of liquid but they are in different containers

Explanation:

If 25.0 ml is taken from a stock solution and added to volumetric flask and diluted up to the calibration mark, then the new concentration will be 1.49 g/L.

Now, Concentration of solution is defined as amount of solute present in specific volume of the solution.

Molarity (M) = moles of solute ÷ litres of solution

Here, the concentration of solution is given as, 14.9 g/l

and, the volume of solution is 25.0 ml= 0.025 l

using the equation,

   14.9 = moles of solute ÷0.025

   moles of solute = 0.3725 moles

0.025 l is added to a 0.25 l (250.0 ml =0.25 l) volumetric flask and diluted up to the calibration mark.

Since,

volume of solution = volume of flask

And, moles of solute remains the same.

Therefore,

The new concentration is,

concentration = (0.3725 ÷ 0.25) g/l

New concentration = 1.49 g/l

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Answer:

Which problem ??

Explanation:

Can you write your problem ??

Yes, the density of an object change if only the volume changes because density is an intensive property.

Density is the measure of the mass of matter contained by a unit volume.

This suggests that the density of a substance is a function of the mass and volume of the substance.

However, an increase in volume decreases the overall density of an object, making it float.

Therefore, yes, the density of an object change if only the volume changes because density is an intensive property.

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Increased quantities of Mitochondria in the muscle cells leads to produce great amount of energy.

What are skeletal muscle cells?

Skeletal muscle fibers are very elongated cells with a sarcolemma, a very elastic and resilient plasma membrane. Muscle fibers are referred to as syncytiums because they are distinguished by the presence of many nuclei near the cell's edge.

Myocytes, or muscle cells, are the cells that make up muscular tissue. Long, cylindrical, multi-nucleated, and striated cells make up skeletal muscle. Due to their high energy needs, skeletal muscle cells have numerous mitochondria that enable them to produce enough ATP.

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The melting points of the products obtained ranged from 135 to 137, indicating that the compound is probably benzoin since the melting points of the products are very similar to those of benzoin (135 to 137). The melting point range of benzoin is closer to the product than that of hydroxybenzoic acid.

Benzoin is the sap (gum resin) that comes from cuts withinside the trunk of bushes that belong to the Styrax family. Benzoin is used at the pores and skin for ulcers, mattress sores (strain ulcers), cracked pores and skin, and lots of different conditions, however, there may be no correct medical proof to aid those uses.

Benzoin is on occasion referred to as gum benzoin or gum benjamin, and in India Sambrani or loban, aleven though loban is, thru Arabic lubān, a frequent time period for frankincense-kind incense, e.g., aromatic tree resin. Benzoin is likewise referred to as storax, now no longer to be harassed with the balsam of the equal call acquired from the Hamamelidaceae family.

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Cr2O3 is the empirical formula of a compound that is 68.42% Cr and 31.58% O by mass.

The subscripts are Cr2O3.

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The term measurement has to do with the process of obtaining the value of a quantity. There are several units that could be used in measurement but the SI unit is the internationally accepted unit of measurement.

Let us now match the words and the vocabulary;

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There is more traffic between 8 and 9 in the morning because most people start work at 9. this would be a(n) hypothesis.

A hypothesis is a tested assertion about the relationship between two or more variables or a proposed justification for an observed phenomenon in a scientific context. It helps make a connection to the guiding idea and specific study topic.

It supports data processing and evaluates the study's validity and reliability. It provides a base or further proof to back up the study's validity.

A hypothesis can be categorised as being straightforward, complex, or direction-based.

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Answer:

protons and neutrons

Explanation:

because Neil bohr had described this is his theory

Answer:

hope this help

Explanation:

In Bohr's model, electrons moved around the atomic nucleus in circular orbits, but those orbits had set discrete energies, and electrons could gain or lose energy only by moving from one orbit to another, absorbing or emitting radiation as necessary.

To prepare 128.2ml of a 0.364 M aqueous solution of NaCl.the mass in grams, of NaCl need to use to make the solution is 2.723 gm.

Molarity is defined as the no. of moles of solute per liter of solution.

Here,

Molarity =  moles of solute / Liter of solution

0.36 M solution will contains 0.364 moles of NaCl.

therefore, volume of solution in L =  ( 128.2 / 1000 ) L × 1 L

                                                 = 0.1282 L

that means, it will contain, no. of moles of NaCl

= (0.1282 L of solution × 0.364 ) / 1 L of solution      

= 0.0466 moles of NaCl

now, molar mass of NaCl  = 58.44 g/mol    

so, 1 mol of NaCl has a mass of  58.44 g/mol

therefore, 0.0466 moles of NaCl will have mass of

= ( 0.0466 moles of NaCl × 58.44 g ) / 1 mole of NaCl

= 2.723 g

Thus,To prepare 128.2ml of a 0.364 M aqueous solution of NaCl .the mass in grams, of NaCl need to use to make the solution is 2.723 gm.

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Answer: gas

Explanation:

There would be 3.91 ×10²² potassium ions in 5.66 g of potassium sulfate.

A molecule is the smallest unit of a substance that retains its composition and properties. It is made up of two or more atoms that are joined together by chemical bonds.

The number of moles of the  k2so4  = mass/molecular mass

                                                            =5.66 /174.27

                                                            =0.032478 moles

The number of the potassium ion in  k2so4  = 2 ×0.032478×6.022 ×10²³

                                                                        =3.91 ×10²² ions

There would be 3.91 ×10²² potassium ions in 5.66 g of potassium sulfate.

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The difference between ideal gases and real gases are most pronounced under conditions of inter molecular forces.

Difference between ideal gases and real gases are discussed below :

Real gases differ from ideal gases thanks to the presence of inter molecular forces, which cause the molecules of a true gas to deviate from perfect random motion.

As a result, real gases deviate from the perfect gas law at high densities and low temperatures, where the results of inter molecular forces are more pronounced.

So, the difference between ideal gases and real gases are most pronounced under conditions of inter molecular forces.

What are inter molecular forces?

The attractive forces that exist between molecules are liable for many of the bulk physical properties exhibited by substances.An inter molecular force (IMF) (or secondary force) is that the force that mediates interaction between molecules, including the electromagnetic forces of attraction or repulsion which act between atoms and other sorts of neighboring particles, e.g. atoms or ions.

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