which is the correct name for the compound n2o4? a. nitrogen oxide b. tetranitrogen dioxide c. dinitrogen quadoxide d. dinitrogen tetroxide

According to the concept of diffusion the water will move from 5% salt solution to 15%salt solution.

Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.

There are 2 main types of diffusion:

1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.

2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.

There are 2 types of facilitated diffusion one is osmosis and dialysis.

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Answer:

A molecule is usally formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. When two hydrogen atoms combine with one oxygen atom, it becomes the compound water.

Explanation:

To "fix" hydrogen means to convert it from its gaseous form (H₂) into a chemically usable form or compound.

Fritz Haber's method for fixing hydrogen, known as the Haber-Bosch process, involves combining hydrogen (H₂) with nitrogen (N₂) from the air to produce ammonia (NH₃) through a catalytic reaction. This ammonia can then be used to produce fertilizers, explosives, and other important chemicals.

Fritz Haber's method is considered the most important invention of the twentieth century because it revolutionized agriculture and food production. The production of ammonia-based fertilizers made it possible to significantly increase crop yields, addressing global food shortages and supporting a growing population.

This process had a profound impact on global agriculture and played a crucial role in the Green Revolution, which helped alleviate hunger and improved living standards worldwide.

Additionally, the Haber-Bosch process also enabled the production of synthetic materials, such as plastics and fibers, that have transformed various industries and contributed to technological advancements.

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Answer:

the mass of hydrogen bromide is 2 g

Answer:

P

Explanation:

If two bowling balls are rolling down a hill. It is determined that they each have the same amount of kinetic energy. However, one ball weighs twice as much as the other. Then the body with lighter mass have greater speed than the heavier body.

Kinetic energy is defined as the half of the product of massof the object and square of the velocity by which body move.

Mathematically, it may be defined as the

K. E = 1/2 × mv²

v² = 2K. E / m

Since, we noticed that velocity is inversely proportional to the mass of the body. Therefore, light body move with greater kinetic energy than the heavier body.

Thus, we concluded that two bowling balls are rolling down a hill. It is determined that they each have the same amount of kinetic energy. However, one ball weighs twice as much as the other. Then the body with lighter mass have greater speed than the heavier body.

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A systemic release of histamine and other inflammatory mediators leads to the most dramatic immediate hypersensitivity reaction known as anaphylaxis.

Anaphylaxis is a severe, potentially life-threatening allergic reaction that can occur within seconds or minutes of exposure to an allergen. It is characterized by symptoms such as difficulty breathing, swelling of the throat and tongue, rapid pulse, and loss of consciousness. Anaphylaxis requires immediate medical treatment, including an injection of epinephrine and a trip to the emergency room. If left untreated, anaphylaxis can be fatal.

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Answer:

Explanation:

a i think

Answer:

it would (a)

Explanation:

carcinogen is a substance that gives your tissues a higher chance of getting cancer

Answer:

Number of protons = 16

Number of neutrons = 16

Number of electrons = 18

Explanation:

The atom given is (32,16)S_2.

This simply Sulphur atom.

What (32,16)S_2 implies is that;

Atomic number = 16

Mass number = 32

Now atomic number means number of protons present in the atom

While mass number means number of sum of protons and neutrons present in the atom

Thus;

Number of protons = 16

Number of neutrons = 32 - 16 = 16

Now, for a neutral atom, number of protons is equal to number of electrons.

However, in this case it's not neutral but has a charge of -2.

Thus,

Number of electrons = 16 + 2 = 18 electrons

Answer:

The solubility curve helps us to predict which substance will crystallize out first from a solution containing two or more solutes.

The solubility curve helps us to compare the solubilities of different substances at the same temperature.

Solubility curve can be used to determine the amount of substance deposited when the solution is cooled.

It brings the change in the solute composition substance.

Answer:

1, we can know the solubility curve of substances.

2, we can compare the solubility curve of two or more substances in same temperature.

3, we can know the amount of solute and solvent which is used that solubility.

4, we can know that solubility of substances changes with temperature.

Answer:high to low

Explanation:

There must have been 0.10mol of \(C_{2} H_{2} O\) in the container at the beginning.

 \(C_{2} H_{2} O\) + \(2O_{2}\) = \(2CO_{2}\) + \(H_{2} O\)

The above reaction makes it quite evident that 1 mol of \(C_{2} H_{2} O\) combines to create 2 mol of \(CO_{2}\) and \(O_{2}\) is given in excess that \(C_{2} H_{2} O\) alone controls a product's formation. Therefore, here, O is an excess reactant and \(C_{2} H_{2} O\) is a limiting reactant.

It takes 6 times as much \(C_{2} H_{2} O\) to produce 1 mol of \(CO_{2}\) from 0.05 mol of \(C_{2} H_{2} O\).

Now, 0.6 divided by 6 mol of reactant is required for 0.60 moles of \(CO_{2}\)to produce, which translates to

moles of \(C_{2} H_{2} O\) = 0.6/6 = 0.1 mol .

Therefore, \(C_{2} H_{2} O\) must have been present in the container in an initial concentration of 0.10mol.

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Answer:

Tyre

In cold weather, you might have regularly kept a check on the pressure of the tyres of your car. Driving increases the temperature of the tyres, and, therefore, the air inside the tyre warms and expands. When you measure the pressure of the tyres at the time when you have just driven the car, it will be high. However, in cold weather, the pressure of the tyres will be low. So, it is recommended that you should always measure the pressure of the tyres.

Answer:

General equation = acid +metal---->salt+ hydrogen

word equation =hydrochlooric acid + magnesium ---> magnesium chloride + hydrogen gas.

Explanation:

I hope this is what you want.

Answer:

The magnesium reacts with the acid, producing visible bubbles of hydrogen gas. ... Magnesium ribbon is a flammable solid. Hydrochloric acid is a corrosive liquid. Hydrogen gas is explosive.

Summary: Magnesium, mossy zinc and copper foil are reacted with hydrochloric acid to produce hydrogen gas and a salt. The reaction rates are compared. Hazards: Hydrochloric acid is corrosive and toxic.

The value of the equilibrium constant for a given reaction is the same regardless of the direction from which equilibrium was attained is not true.

The direction from which equilibrium was attained can affect the value of the equilibrium constant for a given reaction. If a reaction is started with all reactants, the equilibrium constant will be different than if the reaction is started with all products. This is because the forward and reverse reactions are not occurring at the same rate when the system is not at equilibrium. The direction from which equilibrium was attained can also affect the value of the equilibrium constant if the reaction is not at equilibrium when the system is started.

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Answer:

876000

Explanation:

You first count three digits from the left, there after you check the next number to the digit to be rounded off. If the number is greater than or equal to 5 then add 1 to the rounding off number, but if it's less than 5, then don't do anything to the rounding off digit but replace the number to right with zeros.

Significant figures are the number of digits that add to the correctness of a value, frequently a measurement. The following number is rounded off to three significant digits as 876000.

The number of significant single digits (0 to 9 inclusive) in the coefficient of expression in the scientific notation is referred to as "significant figures" (SF). The expression's number of significant figures reveals the engineer's or scientist's level of assurance or precision when expressing a quantity.

When a number is rounded off, its value is maintained but is brought closer to the next number, simplifying the number. The crucial figures are preserved when numbers are rounded off.

The following number is rounded off:

876493 = 876000

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Answer:

Francium (Fr), heaviest chemical element of Group 1 (Ia) in the periodic table, the alkali metal group. It exists only in short-lived radioactive forms.

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Francium  belongs to alkali metals group.

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

Francium is a radioactive element, the electronic configuration of Francium is [ R n] 7s¹. The number of electron in outermost shell s is 1. This shows that francium belongs to group 1 of periodic table that is alkali metals.

Therefore, Francium  belongs to alkali metals group.

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Answer:energy is emitted as electromagnetic radiy

Explanation:

The pH of the solution is 1.60, by mixing 20.0 ml of 0.15 m hcl with 20.0 ml of 0.10 m koh.

pH = -log[H+]

Also;

mole of substance = molarity × volume in L

The moles of HCl = 0.15 × 0.02 = 0.003 moles

The moles of KOH = 0.10 × 0.02 = 0.002 moles

The solution will be acidic since the moles of HCl is greater than that of KOH.

Moles of remaining HCl [H⁺] remaining = 0.003 - 0.002 = 0.001 moles

Molarity of remaining HCl [H⁺] remaining = 0.001/0.04 = 0.025 M

Hence, [H⁺] = 0.025 M

pH = - log(0.025)

pH = 1.6

Therefore, the pH of the resulting solution is 1.60.

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The statement that is not true about proteins is "Proteins are naturally acidic." Option C is correct.

Proteins are biological macromolecules made up of long chains of amino acids. They are also referred to as polypeptides because they are composed of multiple peptide bonds between the amino acids. The specific sequence and arrangement of amino acids in the polypeptide chain determine the unique 3D structure and function of the protein.

Proteins can have a structure characterized by loops, bends, and twists, and this structure is held together by a variety of intermolecular interactions, including hydrogen bonds, disulfide bonds, electrostatic interactions, and van der Waals forces.

While some amino acids have acidic or basic side chains, proteins as a whole are not necessarily naturally acidic. The overall charge of a protein is dependent on the charge of its constituent amino acids and the pH of the surrounding environment.

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--The given question is incomplete, the complete question is

"All of the following statements are true about proteins except. -Proteins can have a structure characterized by loops, bend, and twists. A) Proteins are composed of amino acids. B) Proteins are polypeptides C) Proteins are naturally acidic. D) Hydrogen bonds keep the protein together"--

The molecular formula of the compound is C12H14N₃O5.

To determine the molecular formula of the compound, we need to calculate the empirical formula first, which represents the simplest whole-number ratio of atoms in the compound.

Given the masses of carbon, hydrogen, nitrogen, and oxygen in the sample, we can calculate the moles of each element using their molar masses:

Moles of C = 0.900 g / 12.01 g/mol = 0.0749 mol

Moles of H = 0.0751 g / 1.008 g/mol = 0.0745 mol

Moles of N = 0.175 g / 14.01 g/mol = 0.0125 mol

Moles of O = 0.600 g / 16.00 g/mol = 0.0375 mol

Next, we need to find the simplest ratio of the moles by dividing each value by the smallest value:

Moles of C / 0.0125 = 5.992

Moles of H / 0.0125 = 5.960

Moles of N / 0.0125 = 1.000

Moles of O / 0.0125 = 3.000

Rounding these ratios to the nearest whole number, we get a ratio of 6:6:1:3, which corresponds to the empirical formula C6H6N1O3.

Finally, to determine the molecular formula, we divide the given molar mass of the compound (560 g) by the molar mass of the empirical formula (C6H6N1O3):

560 g / (6 * 12.01 g/mol + 6 * 1.008 g/mol + 1 * 14.01 g/mol + 3 * 16.00 g/mol) ≈ 560 g / 194.19 g/mol ≈ 2.88

Since the result is close to 3, we can multiply the empirical formula by 3 to obtain the molecular formula: C6H6N1O3 * 3 = C18H18N3O9.

However, none of the options provided match the calculated molecular formula.

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 The molecular formula for the molar mass of the unknown compound is 560g that consists of 0.900 g of carbon, 0.0751 g of hydrogen, 0.175 g of nitrogen, and 0.600 g of oxygen is C₂₄H₂₄N₄O₁₂ (Option A).

To determine the empirical formula, which involves converting the sample into moles. The moles of each element in the compound are calculated using their respective atomic masses.

The smallest number of moles is 0.0125 moles of nitrogen, which is the limiting reagent. As a result, the empirical formula is:

Therefore, the empirical formula is C₆H₆NO₃.

The empirical formula mass can be calculated by adding the molar masses of each element:

Total mass = 140.13

The molecular formula can be determined by comparing the empirical formula mass and the given molar mass. The molecular formula is the same as the empirical formula when the two values are equal. The ratio of the molecular formula mass to the empirical formula mass is equal to the integer value of n (number of empirical formula units):

n = molar mass/empirical formula mass

n = 560/140.13

n = 4

Therefore, the molecular formula is four times the empirical formula: C₂₄H₂₄N₄O₁₂ (Option A).

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Answer:

hayop ok na po kayo ayoko

Answer:

The cycle of citric acid Hydrogen atoms are transported to FAD during the conversion of succinate to fumarate. This process is catalyzed by a succinate dehydrogenase enzyme.

During the process of succinate dehydrogenation, succinate is oxidized to fumarate by losing electrons, which are transferred to FAD, reducing it to FADH2. This transfer of electrons from succinate to FAD is an oxidation-reduction reaction, also known as redox reaction. The energy released during this reaction is harnessed to generate ATP, which is an important energy currency for the cell. Succinate dehydrogenase is an enzyme complex that contains multiple subunits and cofactors, including flavin adenine dinucleotide (FAD) and iron-sulfur clusters. It is located in the inner mitochondrial membrane, which allows it to transfer electrons to the electron transport chain, leading to the production of ATP. It's important to note that the citric acid cycle is a crucial metabolic pathway that takes place in the mitochondria of eukaryotic cells, and it is also known as the TCA cycle or Krebs cycle. The cycle is a series of chemical reactions that converts acetyl-CoA, derived from carbohydrates, fats, and proteins, into carbon dioxide and water, releasing energy in the form of ATP, hydrogen atoms other high-energy molecules.

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Answer:

Thomson--atoms cotain electron

Ernest Rutherford--atoms have a positive nucleus

R.A Millikan--electrons have Q=-1

Dalton--atoms are indivisible

Millikan---> Electrons have a charge of -1

Rutherford ---> Atoms have a positive nucleus

Thomson -----> Atoms contain electrons

Dalton --------> Atoms are indivisible

The atomic theory went through several modifications and different scientists proposed various models of the atom until our present conception of the atom was developed.

The atom was first defined as the smallest indivisible particle of a substance. This idea of "indivisibility" of the atom stems from Dalton's theory.

The fact that atoms were composed of negatively charged electrons was proven by the experiments of J.J Thompson using the cathode ray tube. Millikan's charge to mass experiment showed that the electron has a charge of -1.

Rutherford, in his famous gold foil experiment showed that atoms were composed of a positively charged nucleus.

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Answer:

D. Because they lose electrons

Explanation:

In neutral state the numbers of proton (+) = numbers of electrons (-)

if there are less electrons, there will be more protons than electrons => positive charge

if there are more electrons, there will be more electrons than protons => negative charge

The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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