A Click Submit to complete this assessment. Q Question 8 Consider the following redox reaction which was conducted under acidic medium to answer this question. M2+ + XO3 MO4 4 x3+ A 0.166 M MC1₂ (MM = 124.8) aqueous solution was placed in a buret and titrated against a 3.35 g sample of 81.1% pure NaXO3 (MM = 279.7) that had been dissolved in an appropriate amount of acid until the redox indicator changed color. Given this information, how many mL of titrant were necessary to completely react with the titrand? Use 3 significant figures to report your answer. A Click Submit to complete this assessment. Type here to search 5: 7 89°F

The  stationary metal sphere can have kinetic energy by: The metal's molecules are moving around.

When you find a substance's temperature, you are measuring the "average kinetic energy of the particles in the substance." Temperature is a measure of the average kinetic energy of the particles (atoms or molecules) that make up a substance.

Kinetic energy is the energy an object possesses due to its motion. It is defined as the energy that a body possesses by virtue of being in motion. The amount of kinetic energy that an object has depends on its mass and its velocity. Mathematically, the kinetic energy of an object can be expressed as KE = (1/2)mv^2, where KE is the kinetic energy, m is the mass of the object, and v is its velocity.

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Answer:

V 5.4L

Explanation:

The half life of the gold isotope can be obtained as 2.5 days

The duration it takes for half of the atoms in a sample of a radioactive substance to decay is known as the half-life. It is a gauge of how quickly a chemical decays radioactively. For describing the decay of isotopes, which are various forms of an element with the same number of protons but differing numbers of neutrons in their atomic nuclei, we utilize the idea of half-life.

By the use of the formula;

N/No = (1/2)^t/t1/2

6.25/100 = (1/2)^10/t1/2

0.0625 =  (1/2)^10/t1/2

(1/2)^4 =  (1/2)^10/t1/2

4 = 10/t1/2

t1/2 = 10/4

t1/2 = 2.5 days

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Answer:

32 amu

Explanation:

Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule. O2 is a diatomic molecule. The mass of an oxygen atom = 16 amu. Mass of O2 molecule = 2 × 16 = 32 amu.

Rate constant of reaction at 1200 K : 1.20 times 10 9 M -1 s -1

What is Rate of Reaction?

The rate of reaction in a chemical reaction is the speed at which the products are formed from the reactants. It helps us comprehend how rapidly a reaction might happen. For instance, cellulose burns exceedingly quickly in fire and the process is complete in less than a second.

The rate of reaction, also known as reaction rate, is the rate at which reactants transform into products. It should go without saying that different chemical reactions occur at different rates. While certain chemical reactions take place extremely immediately, others usually take some time to reach their final equilibrium.

Rate of reaction = k [NH 3] x [NO] y, where k is the reaction's rate constant, x is the order of the reaction with respect to NH 3, and y is the order of the reaction with respect to NO

Rate of reaction = k [NH 3 ] [ NO ]  

Rate constant of reaction at 1200 K : 1.20 times 10 9 M -1 s -1

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Answer: D: planets

Explanation:

The conversion of a cysteine to a cystine involves an oxidation reaction.

Cysteine and cystine are two amino acids that contain a sulfur atom. Cysteine exists in its reduced form, while cystine is the oxidized form of cysteine. In the conversion process, cysteine undergoes an oxidation reaction, where two cysteine molecules are oxidized, resulting in the formation of a disulfide bond between them, forming cystine. This oxidation reaction involves the loss of electrons or an increase in the oxidation state of the sulfur atom in cysteine. Therefore, option A) An oxidation is the correct answer.

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Answer:

the modals of arrangement for first periodic table was. increasing atomic mass and grouping together of elements having similar properties

Answer:

volume is the amount of space in a certain object

The product of a synthesis reaction between magnesium metal and nitrogen gas is magnesium nitride (Mg3N2).

In a synthesis reaction, two or more reactants are combined to form a new, more complex product. When magnesium metal reacts with nitrogen gas, the magnesium donates electrons to the nitrogen atoms, forming a strong covalent bond and resulting in the formation of magnesium nitride. The reaction can be represented by the following equation:

                                    3Mg + N2 ⇒ Mg3N2

Magnesium nitride (Mg3N2) is a chemical compound made up of magnesium and nitrogen. It is a white solid that is used in a variety of industrial and scientific applications, such as in the production of high-strength, lightweight alloys for the aerospace and automotive industries, and as a catalyst in chemical reactions.

The synthesis of magnesium nitride from magnesium metal and nitrogen gas is a typical example of a synthesis reaction, where two or more simple substances are combined to form a more complex product. In this reaction, magnesium metal reacts with nitrogen gas to form magnesium nitride. The reaction is exothermic, releasing heat, and is usually performed at high temperatures (around 800-1000°C) in a sealed container under an inert atmosphere to prevent the formation of unwanted by-products.

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Answer:

Ca generally loses two electrons from its outer shell to form a Ca2+ ion.

The classification of an acid or base as weak or strong is primarily determined by the extent of dissociation in water.

The characterization of a corrosive or a base as frail or solid not entirely set in stone by the degree of separation of the broke down corrosive or base, which is otherwise called the ionization steady. A solid corrosive or base totally separates in water, creating a high centralization of hydrogen or hydroxide particles, separately.

Conversely, a powerless corrosive or base just to some extent separates, bringing about a lower centralization of particles. The solvency of the corrosive or base and its fixation likewise assume a part in deciding its solidarity, however they are not the essential variables. The grouping of a corrosive or base is connected with its solidarity, yet not by any means the only element decides its solidarity.

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Answer:

prevent hydroxide formation

Explanation:

Answer:

92.01 g/mol

Explanation:

So first you need to find the empirical formula by the percents. That would be, assuming that you have 100 grams of the the sample, divide each quantity of each element found by its respective molar mass.

30.4 g of N ÷ 14 g/mol N= 2.17 mol of N

69.6 g of O ÷ 16g/mol= 4.35 mol of O

You can establish now the empirical formula.

N2.17O4.35,

but since you can't have a decimal subscript, you divide each subscript by the minimum subscript

NO2

So then you're said that the molecular formula derived from that empirical formula has 2 nitrogen, so you multiply all the subscripts, by 2:

N2O4

-Dinitrogen Tetraoxide

-Nitrogen oxide (IV)

Then all you have to do is find the molecular mass of the compound using the periodic table and what you obtain is the molar mass.

remember: molecular mass is correspondent to molar mass.

Answer:

1. A

2. C

3. C

Explanation:

1. there are single cell organisms

2. all others are abiotic factors

3. individual is just one, population is one species, community is all populations, ecosystem includes abiotic and biotic factors, biome is a large geographical area.

Answer:

Answer is B

Explanation:

Answer:

As temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C .

You can determine how many grams of sodium chloride, commonly known as table salt, can be dissolved in

100 g

of water at

80

∘

C

by taking a look at its solubility graph.

A substance's solubility graph tells you how its solubility changes, let's say starting from room temperature, when temperature is either decreased or increased.

When a sample of 89.56 g  NH4NO3 dissolves in 42.05 g of water, the temperature changes from 28.69 c to 7.8 c, the heat flow (q) in this case is approximately -11,165 Joules.

To calculate the heat flow (q) in this case, we can use the equation:

q = m × C × ΔT

where:

q is the heat flow

m is the mass of the solution (water + NH4NO3)

C is the specific heat capacity of the solution

ΔT is the change in temperature of the solution

First, we need to find the mass of the solution by adding the mass of the water and the mass of NH4NO3:

Mass of solution = Mass of water + Mass of NH4NO3

= 42.05 g + 89.56 g

= 131.61 g

Next, we calculate the change in temperature:

ΔT = Final temperature - Initial temperature

= 7.8°C - 28.69°C

= -20.89°C

Now, we need to determine the specific heat capacity of the solution. Since the specific heat capacity of water is commonly used, we can assume it is approximately 4.18 J/g·°C.

Plugging the values into the equation, we can calculate the heat flow (q):

q = 131.61 g × 4.18 J/g·°C × (-20.89°C)

≈ -11,165 J

Therefore, the heat flow (q) in this case is approximately -11,165 Joules.

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Answer:

it's volume also decrease

Answer:Opposite

Explanation:

Answer:

because of the way they've bonded

Explanation:

Ionic bonding promotes the creation of a soluble salt. and high melting and boiling points

Covalent bonding promotes formation of molecules.

Polar covalent bonding promotes solubility in polar water

Metallic bonding promotes malleability, ductility, and ability to conduct heat and electric current.

according to this do they change

The general properties of matter result from its relationship with mass and space. ... Because it occupies space, all matter has volume and impenetrability, since two objects cannot occupy the same space simultaneously.

A substance with weak intermolecular forces vaporizes more easily and therefore has a low vapor pressure. (option 1)

The strength of intermolecular forces between molecules determines how tightly they are held together in the liquid state. In general, substances with weaker intermolecular forces require less energy to break the bonds holding them together and vaporize more easily. As a result, they have a higher tendency to escape into the gas phase and have a higher vapor pressure.

On the other hand, substances with stronger intermolecular forces require more energy to overcome the forces holding them together and have a lower tendency to vaporize. Therefore, they have a lower vapor pressure. So, the correct statement is "A substance with weak intermolecular forces vaporizes more easily and therefore has a low vapor pressure."

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Complete Question:

which statement correctly describes the relationship between intermolecular forces and the vapor pressure of a substance? multiple choice question.

Answer: Dinitrogen trioxide

Explanation:

Organic compounds that exhibit a significant difference in solubility between impurities and the desired compound, and form regular crystals with a sharp melting point, are the most easily purified through recrystallization.

Organic compounds that possess a significant difference in solubility between their impurities and the desired compound are most easily purified by recrystallization. Recrystallization is a commonly used technique in organic chemistry for purifying solid compounds based on their differing solubilities at different temperatures.

Crystallization occurs when a solute is dissolved in a solvent at an elevated temperature, and then the solution is cooled down, allowing the solute to form crystals. During this process, impurities present in the solution are excluded from the growing crystals, leading to a purification of the desired compound. The effectiveness of recrystallization depends on the solubility differences between the compound of interest and the impurities.

Organic compounds with a high degree of purity and a sharp melting point are particularly suitable for recrystallization. Compounds that have impurities that are significantly less soluble in the chosen solvent at low temperatures are ideal candidates for recrystallization purification. Additionally, compounds that form well-defined, regular crystals are easier to purify through this method.

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Answer:

6.273×10²³

Explanation:

hope this is useful friend

Answer:

6.023 × 10²³

Explanation:

Avogadro's number is used for calculating masses and moles and can applied to Stoichiometry. Avogadro's number is useful for atoms and molecules

Answer:

B

Explanation:

Because I said so

Answer:

In general terms, because (1) the carbon-oxygen and hydrogen-oxygen bonds in ethanol are much more polar than any of the bonds in propane; (2) the oxygen atom in ethanol can form hydrogen bonds with the hydrogen atoms in water, but there is not such possibility with propane; and (3) propane contains more carbon atoms per molecule than ethanol.

Explanation:

In general terms, because (1) the carbon-oxygen and hydrogen-oxygen bonds in ethanol are much more polar than any of the bonds in propane; (2) the oxygen atom in ethanol can form hydrogen bonds with the hydrogen atoms in water, but there is not such possibility with propane; and (3) propane contains more carbon atoms per molecule than ethanol.