What Mass Of MnO Is Produced When 445 Grams Of HO Are Reacted?HO+2MnO4, + Br > BrO+2MnO + 20HO 5,200 (2024)

the oxidation number of the following is a. PO43-: Phosphorus: +5, Oxygen: -2, b. PO33-: Phosphorus: +3, Oxygen: -2, c. HPO42-: Hydrogen: +1, Phosphorus: +5, Oxygen: -2, d. P3O103-: Phosphorus: +5, Oxygen: -2, e. IO3-: Iodine: +5, Oxygen: -2, f. IO2-: Iodine: +4, Oxygen: -2.

g. IO-: Iodine: +1,h. NH4+: Nitrogen: +3, Hydrogen: +1, i. NO2+: Nitrogen: +4, Oxygen: -2, j. NO2-: Nitrogen: +3, Oxygen: -2, k. NO-: Nitrogen: +2, Oxygen: -2, l. NO3+: Nitrogen: +5, Oxygen: -2, m. N2O22-: Nitrogen: +5, Oxygen: -2, n. TeO42-: Tellurium: +6, Oxygen: -2, o. SiO22-: Silicon: +4, Oxygen: -2. The oxidation number (also called oxidation state) of an atom in a chemical compound is a number that represents the degree of oxidation (loss of electrons) of that atom. The oxidation number is assigned based on a set of rules, such as: The oxidation number of an atom in its elemental form is always 0. In a compound, the sum of the oxidation numbers of all atoms must be equal to the charge of the compound (if it is an ion) or 0 (if it is a neutral compound).

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The forms of heat transfer and examples of them when matched, are:

Conduction:

Touch transfers heat Earth warms air

Convection :

Warm air rises Liquid / gas transfer heat

Radiation

Sun heats Earth Waves transfer heat

What are the forms of heat transfer ?

There are three main forms of heat transfer:

Conduction: This is the transfer of heat through a solid material. Heat is conducted through the material by the collision of atoms and molecules. Touch therefore transfers heat.

Convection: This is the transfer of heat by the movement of a fluid or gas. In convection, heat is transferred by the movement of the fluid or gas itself.

Radiation: This is the transfer of heat by electromagnetic waves, such as infrared radiation. Radiation does not require a medium for heat transfer and can occur in a vacuum. The sun's energy reaches the Earth through radiation, and heat from a fire can also be felt by radiation.

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Answer:

Salt and water is produced.

For example:-

NaOH(base)+HCl(Acid)=>NaCl(salt)+H20(water)

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The average atomic mass of neon is derived from the isotopic masses and percentage abundance. The average atomic mass of neon is 20.37 amu.

What are isotopes?

Isotopes are atoms of same element with different atomic mass numbers. Almost all elements have two or more isotopes but not all of them are stable in nature.

The average atomic mass can be calculated from the isotopic mass and and percentage abundance as follows:

atomic mass = ∑ (isotopic mass × %abundance /100 )

Apply the isotopic mass and abundance of all isotopes given as follows:

atomic mass of neon = (80.75/100 ×19.99 amu) + (0.25/100 ×20.99 amu) + (19/100 × 21.99 amu) = 20.37 amu.

Therefore, the atomic mass of neon is 20.37 amu.

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Answer:

The number 6 refers to the atomic number c. The numbers 12, 13, and 14 refer to the atomic mass d.

Explanation:

In this structure 6 represents atomic number that is the number of electrons or the number of protons and 13 represents the mass number (A). The number of neutrons (N) = mass number (A) − no. of electron or no. of proton. Hence N=13−6=7.

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Answer:

The number 6 refers to the atomic number c. The numbers 12, 13, and 14 refer to the atomic mass d.

Explanation:

50 grams of AgCl (Silver Chloride) will produce 39.2 grams of silver when the AgCl is processed.

What is Silver Chloride?

Silver chloride (AgCl) is an inorganic compound composed of silver and chlorine. It is a white powder or crystalline solid that is insoluble in water, alcohol, and other organic solvents. Silver chloride is used mainly in photography and in the production of specialized glass. Silver chloride has been used in the past to make silver plating, silver salts and silver jewelry. Silver chloride has been used in various medical treatments, including eye drops and ointments, as an antiseptic and to treat skin disorders.

The process involves reacting the AgCl with either a reducing agent or a disproportionation reaction. The reaction produces Ag (silver) and Cl2 (chlorine gas). The silver produced accounts for approximately 78.4% of the original AgCl mass. Therefore, 39.2 grams of silver can be produced from 50 grams of AgCl.

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So the new concentration of the solution is 0.0001M.

What is magnitude?A magnitude is the measurement or absolute value of a quantity. A magnitude is represented by a positive real number. Put simply, a magnitude is the size of some quantity. For example, the magnitude of an earthquake, measured on the Richter scale, usually varies between 1 and 10 and represents the size of the earthquake. An earthquake with a magnitude of 8 is much more trouble than an earthquake with a magnitude of 3.The magnitude of a number, unlike the magnitude of a physical quantity, is not relative to a scale or set of units: the magnitude of 100 is 100. By contrast, the magnitude of a ruler is 12 in inches but is 30.48 in centimeters. Outside of pure mathematics one has to be careful to specify the units in which the magnitude of some quantity is measured.

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Most proteins absorbed in the digestive tract in duodenum or proximal jejunum of the small intestine.

The digestive system is a process carried out by the digestive organ system to process food so that its nutrients can be absorbed by the body and converted into energy. The digestive tract consists of the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus.

The small intestine is a long tube that has villi on its walls. The small intestine consists of three parts namely the duodenum, jejunum and ileum. In the wall of the small intestine there is a mucosa that produces juice containing enzymes. Enzymes function to digest complex materials into simpler ones, then the results of the digestion are completed and absorbed by the villi in the duodenum or proximal jejunum.

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Answer:

Below

Explanation:

Each exerts pressure proportional to its fraction of the total

total = .200 + .100 + .200 = .500 mol

argon is .200 of this

.200 / .500 * 5 atm = 2 atm

Atoms of different metals can differ in number of protons, electron configuration, atomic radius, melting/boiling point, hardness/ductility, and conductivity.

what is difference between atom metals with one another?

Atoms of different metals can differ from each other in a number of ways, including:

Number of protons: The number of protons in the nucleus of an atom determines its atomic number and thus its identity as an element. Different metals will have different atomic numbers and therefore different numbers of protons.Electron configuration: The arrangement of electrons in the outermost shell of an atom, also known as the valence electrons, determine the chemical properties of an element. The electron configuration of different metals will be different.Atomic radius: The size of an atom is determined by its atomic radius. Different metals will have different atomic radii.Melting and boiling point: The melting and boiling points of different metals will vary depending on the strength of the metallic bond holding the atoms together. Generally, metals with stronger metallic bonds will have higher melting and boiling points.Hardness and ductility: The hardness and ductility of a metal depend on the crystal structure and the strength of metallic bonds. Harder metals are less ductile and more brittle, while softer metals are more ductile and less brittle.Conductivity: The ability of a metal to conduct electricity is related to the number of free electrons in the outermost shell of its atoms, the metallic bond strength, and the atomic radius. Different metals will have different conductivity.

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The statement which describes the experiment best is,the scientist is investigating Charles's law, which shows that temperature and volume are directly proportional.

What is Charles's law?

It states that the volume of a given mass of gas is directly proportional to its absolute temperature when pressure is held constant. It states that the volume of a given mass of gas is directly proportional to its absolute temperature when pressure is held constant. In other words, if the temperature of a gas increases, its volume will also increase. This relationship was first described by French scientist Jacques Charles in 1787. He based his law on the results of experiments he conducted with varying amounts of gas. Charles's Law is one of the gas laws, which were used to formulate the ideal gas law. This law is especially useful for understanding how gases behave under various conditions, such as changes in temperature and pressure. It is also important to note that Charles's Law does not apply to liquids and solids as they are not gases.

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Answer:2.7

Explanation:

Decomposition - 5

Combustion - 3

Synthesis - 4

Double replacement - 1

Single replacement - 2

Decomposition reaction is the breaking down of one reactant into multiple substances/fragments/parts due to external sources of energy.

Combustion is the burning of any material and we know that burning is a reaction with oxygen.

Synthesis is the formation of one compound from multiple reactants i.e. one product.

A double replacement or double displacement reaction takes place like this: AB + CD --> AC + BD

In single displacement reactions, one element is substituted for another element in the final compound, i.e. A + CD --> AC + D

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Therefore, since the density of the samples are closer to the density of pyrite (5.01 g/cm³) we conclude that the samples are more like to be pyrite.

What is pyrite?pyrite, also called iron pyrite or fool’s gold, a naturally occurring iron disulfide mineral. The name comes from the Greek word pyr, “fire,” because pyrite emits sparks when struck by metal. Pyrite is called fool’s gold; to the novice its colour is deceptively similar to that of a gold nugget. Nodules of pyrite have been found in prehistoric burial mounds, which suggests their use as a means of producing fire.Wheel-lock guns, in which a spring-driven serrated wheel rotated against a piece of pyrite, were used before development of the flintlock. Pure pyrite (FeS2) contains 46.67 percent iron and 53.33 percent sulfur by weight. Its crystals display isometric symmetry. For detailed physical properties, see sulfide mineral.

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Pea plants uses the light energy from sun for photosynthesis and they synthesis chemical energy in leaves.

What is photosynthesis ?

Photosynthesis is a biochemical process taking place in green plants to synthesis energy with the aid of light energy. The green pigments chlorophyll absorbs enough light energy for this biochemical reactions.

The photosynthetic reaction is the reaction between water and carbon dioxide producing glucose and oxygen. Thus, this process intakes carbon dioxide that we exhale and release oxygen that aids our respiration.

Pea plants are green plants undergoing photosynthesis. They uses light energy to produce chemical energy. With the presence of sunlight, they can easily carry photosynthetic reaction in leaves.

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When a solution is acidic, its pH will vary from 0 to 6.9. The pH of a basic solution may range from 7.1 to 14. When a solution is neutral, its pH will be 7.

What is an example of a solution?

A solution is a uniform mixture made up of two or more elements that have particles smaller than one nanometer. There are many different types of solutions, such as soda water, salt-and-sugar solutions, and others. A solution looks to have one phase for each component.

What does the word "solution" signify in its perfect form?

A solution in chemistry is a mixture of several substances in quantities that can be adjusted up to

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0.24 g of LiOH are needed to make 100 ml of a 0.1 m solution.

What is LiOH?

Lithium hydroxide (LiOH), commonly obtained by the reaction of lithium carbonate with lime, is used in making lithium salts (soaps) of stearic and other fatty acids; these soaps are widely used as thickeners in lubricating greases.

Lithium hydroxide is an inorganic compound with the formula LiOH. It can exist as anhydrous or hydrated, and both forms are white hygroscopic solids. They are soluble in water and slightly soluble in ethanol. Both are available commercially.

LiOH (Lithium hydroxide) is a base. It is because it releases OH– (hydroxide-ion) in water. According to theories, a substance that can accept a proton or donate electrons or react with acid is classified as a base. LiOH reacts with strong acid HCl that produce LiCl and water.

Determination of mass of LiOH required:

The molarity of LiOH is 0.1M

The given volume is,

M = W1 × 1000/m1 × V(ml)

m1 = molecular mass of LiOH = 24

putting the values in the previous equation,

0.1 = W1 × 1000/24 × 100

W1 = 0.1 × 24 ×100/1000

⇒ 0.24 grams of LiOH is required.

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The volume of water must you add have ready to add your acid to (in mL) to prepare a solution with a nitric acid molar concentration of 2.895 M and a volume of 602.244 mL is 487.02 mL

What is the dilution formula?

The dilution formula is used to determine the concentration and volume of reagents in a dilution process of acids, bases, or any other solution.

The dilution formula is:

C₁V₁ = C₂V₂

where;

C₁ is the initial concentration

V₁ is the initial volume

C₂ is the final concentration

V₂ is the final volume

Using the dilution formula:

V₁ = C₂V₂/C₁

V₁ = 602.44 * 2.895 / 15.110

V₁ = 115.42 mL

The volume of water needed = 602.44 - 115.42 mL

The volume of water needed = 487.02 mL

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The pressure of a gas is directly proportional to its temperature. Hence, as temperature decreases pressure decreases. Therefore, option D is correct.

What is Gay- Lussacs law?

According to Gay- Lussacs law at constant volume, the pressure of a gas is directly proportional to the temperature.

Hence, P/T = constant.

Let P1 and T1 be the initial pressure and temperature and P2, T2 be the final quantities, then

P1/T1 = P2/T2

Given P1 = 1 atm

T1 = x ° C

T2 = x/2° C

Then P2 = P1 T2/T1

P2 = 1 × x/2° C / x° C

= 1/2 atm

That is one half of the initial pressure.

Therefore, the pressure of the gas reduces to half when temperature is reduced to half. Thus, option D is correct.

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Answer:

H2SO4 + 2NaNO2 → HNO2 + Na2SO4

The balanced equation for the breakdown of sulfuric acid and sodium nitrate is:

H2SO4 + 2NaNO2 -> HNO2 + Na2SO4

This equation shows that for every one molecule of sulfuric acid (H2SO4), two molecules of sodium nitrate (NaNO2) are required to produce one molecule of nitrous acid (HNO2) and one molecule of sodium sulfate (Na2SO4).

In terms of mass, the equation shows that for every 588 grams of sulfuric acid, 828 grams of sodium nitrate are required to produce 564 grams of nitrous acid and 384 grams of sodium sulfate.

Chemical reactions are the processes by which a material or substances change to create new compounds with new attributes.

What does "chemical reaction" mean?

Through its symbols and equations, a chemical equation reveals information about the reactants and products. the proportion of reactants to molecules. The relative masses of reactants and products are taken into account when molecular masses are represented in grams as "Unified Masses" (U).

as an example of a chemical process:

When one or more chemicals transform into one or more other compounds, a chemical reaction takes place. For instance, the reaction between vinegar and baking soda produces sodium acetate, carbon dioxide, and water, and the reaction between iron and oxygen results in rust.

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4.) Pb^+2 and CrO4^-2

When Pb^+2 and CrO4^-2 ions are dissolved in water, they will dissociate into their individual ions. The equation for this is:

PbCrO4 --> Pb^+2 + CrO4^-2

It's worth noting that these equations are showing the dissociation of the ionic compounds in aqueous solution. The degree of dissociation depends on the nature of the compound and the conditions of the solution, and it may not be 100%.

The number of ammonia molecules made when 6 grams of hydrogen gas reacts with excess nitrogen is 1.79 * 10^24. So the answer is (a) 24 x 10 ^ 23

The balanced equation for the reaction of hydrogen gas (H2) with nitrogen gas (N2) to form ammonia (NH3) is:

2H2 + N2 -> 2NH3

If the reaction uses 6 grams of hydrogen gas, we can use the molar mass of hydrogen (2.02 g/mol) to find the number of moles of hydrogen used in the reaction:

6 g / 2.02 g/mol = 2.97 mol

Since the equation states that 2 moles of hydrogen are needed to produce 2 moles of ammonia, then 2.97 moles of hydrogen will produce 2.97 moles of ammonia.

To find the number of ammonia molecules, we multiply the number of moles by Avogadro's number:

2.97 mol * 6.022 * 10^23 molecules/mol = 1.79 * 10^24

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TRUE , Auxiliary containers must be labeled, excluding a few circ*mstances. LABEL IT IF If a secondary container was transportable, for instance, you are frequently exempt from label requirements.

What does an OSHA secondary container mean?

Chemicals are typically transferred from primary container to secondary containers while within the workplace. These smaller containers can be spray bottles, containers, aliquots, or jars. OSHA states that secondary containers must adhere to the labeling specifications.

What is required for a secondary container?

The identification of the product's hazardous substances and any physical, health-related, nor environmental risks that may be posed by its constituent parts are the two pieces of information that must be provided on the secondary labels.

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The amount of a particular substance in a given quantity of a mixture is the concentration.

Substances move from high concentration to low concentration.

What is the amount of a substance?

The amount of a particular substance in a given quantity of a mixture is known as the concentration of that substance.

The amount of solute in a specific amount of solution is how concentrated a material is.

The concentration of a substance can be expressed as molar concentration or mass concentration.

Molarity, or the number of moles of solute in one liter of solution, is the standard unit of concentration expression.

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To make the buffer solution, 0.198 moles of sodium acetate are required (from which the conjugate base will be formed). The correct response is (C) 0.198 moles.

What in chemistry is a mole?

A highly important unit of measurement used by chemists is the mole. A mole of anything means you have 602,214,076,000,000,000,000,000 of that thing, just like a dozen eggs equals twelve eggs. Chemists use moles to measure incredibly small substances like atoms, molecules, and other particles.

How can I figure out moles?

How many moles of a chemical are there? The substance's weight should be determined. See a periodic table to find its atomic or molecular mass. Subtract the weight from the mass of the atoms or molecules.

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A sea breeze occurs at the coast of oceans and other large water bodies during sunny days.

Where does sea breeze occur?

The term sea breeze defined as it describes a wind that blows from the ocean inland towards land. In daytime, the land surface heats up faster than the water surface.

The sea breeze occurs mostly in the spring and summer months because of the higher temperature differences between the ocean and nearby land, mostly in the afternoon when the land is at more heating from the sun.

Thus, A sea breeze occurs at the coast of oceans and other large water bodies during sunny days.

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The boiling point of the solution in number 12 would be 100.624 °C.

How do we determine the value?

The boiling point of a solution depends on many factors, including the concentration of the solute and the nature of the solvent. The value you provided (Kb of water = 0.512 °C/m) is the molal boiling point elevation constant, which is used to calculate the change in boiling point of a solvent when a solute is added. Using the molar boiling point to multiply the number ascribed to the degree Celsius of the solution which is 12 plus the boiling point of water. which is 100..

Therefore, the correct answer is as given above

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