A gas in a rigid container remains at constant _______________ even if the pressure and/ or temperature are changed. The pressure exerted by the gas will ____________ as its temperature increases.

Answer: D

Explanation:

D - Decomposition of carbonates into oxide and carbon dioxide

A - Combustion reaction. Combustion of methane to form Carbon dioxide and water.

C - Reaction of reactive metal (Na) and water to form hydroxide.

B - No particular name of the reaction. Usually denoted as a synthesis redox reaction.

Answer:CaCO3  CaO + CO2

Explanation: just took it

Answer:

Explanation:

The normality factor is the concentration of a solution expressed in gram equivalent weight of the solution's solute per litre.

When being used during titration, it helps to understand how to determine the pH content of the chemical equation and to which point did the chemical reaction proceed in the solution during titration.

The CONCATENATE function will enable you to move the 2-character state abbreviation in cell l2 into its own column.

A column is a vertical arrangement of data in a table, typically used to organize and display information in a database or spreadsheet. Columns are used to organize data, making it easier to read and interpret. They can also be used to compare different values within the same data set. For example, a company may organize its customer information into columns such as Name, Address, Phone Number, etc. By organizing data into columns, companies can quickly search for and access the information they need.

The CONCATENATE function can be used to move the 2-character state abbreviation in cell l2 into its own column. This function allows you to combine two or more text strings into one string. To use the CONCATENATE function, you will need to enter the function name and the cell references of the text strings you want to combine. For example, if you wanted to move the 2-character state abbreviation in cell l2 to its own column, you could enter the following formula in the cell where you want the state abbreviation to appear: =CONCATENATE(L2). This formula will combine the text string in cell l2 into one string and display it in the specified cell.

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The number of atoms of 3.0 moles of the particle is  1.807 x 10²⁴ atoms K.

Avogadro's number, which is approximately 6.02 x 10^23 atoms per mole, is used to convert between the number of moles of a substance and the number of atoms (or molecules) in that substance.

Given that you have 3.0 moles of K (potassium), you can use Avogadro's number to calculate the number of atoms in 3.0 moles of K:

3.0 moles K x 6.02 x 10^23 atoms K/mole = 1.807 x 10²⁴ atoms K

So, the correct answer is 1.807 x 10²⁴ atoms K

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Answer:

Explanation:

its B 1mole

Answer:

A force pair is a couple of forces which are acting on any given body from opposite directions called action-reaction forces.

One can simply identify the force pair by identifying two objects which are interacting and by describing who is pushing whom and by identification of their drawing.

A book resting on table has two participants, a book applying force downwards due to gravity and the table pushing it away from the earth surface. These are action and reaction forces.

It would be the first one. I'm sorry if I'm wrong. I used to be awesome at this kind of stuff.

Answer:

Explanation:

Fourth option

ʕ◉ᴥ◉ʔ Gimme crown please

The electron cloud is the space surrounding the nucleus that has an overall negative charge.

In an atom, the negatively charged electrons are found in an electron cloud or electron shell, which surrounds the positively charged nucleus. This electron cloud can be thought of as a region of space in which electrons are likely to be found.

The electrons in the cloud are in constant motion and are not in specific orbits around the nucleus.



The overall charge of the electron cloud is negative because it contains negatively charged electrons. The negatively charged electrons balance out the positive charge of the nucleus.

The number of electrons in the electron cloud is equal to the number of protons in the nucleus, which means that the overall charge of the atom is neutral.

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Answer:

24 molecules of CO2

Explanation:

Each molecule of CO2 has only one carbon atom, therefore we need 24 CO2 molecules to get the 24 carbon atoms, as requested.

The oxidation number of specified element in each compound or polyatomic ion is given below :

i) C in ZnCO3 : +4

ii) Fe in Fe(NO3)2 : +2

iii) Cl in ClF4- : +5

iv) S in S2O3 2- : +2

Simply put, an element's oxidation number is the number assigned to it in a chemical combination. The number of electrons that atoms in a molecule can share, lose, or gain while forming chemical connections with other atoms of a different element is known as the oxidation number.

Oxidation state is another name for oxidation number. However, depending on whether or not we are taking into account the electronegativity of the atoms, these phrases might occasionally have a different meaning. In coordination chemistry, the phrase "oxidation number" is commonly employed.

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Answer:

453.6/58/2=453.6/2.9=156.314 grains

The number of grains in a 453.6 g (1lb.) bag of rice is equal to 157 grains of rice.

The weight can be described as the force acting due to gravity. Weight can be considered as a vector quantity if the gravitational pull is acting on the body.

Therefore, in free fall, the weight of the object would be zero. Therefore, terrestrial objects can be weightless while ignoring air resistance.

The unit for measurement of weight is the same as of force, which is the newton. A body with a mass of 1 kilogram will exhibit a weight of about 9.8 Newton on the surface of the Earth, and about 1/6th as much weight on the Moon.

Given the weight of the 20 grains = 58 g

The weight of one grain = 58/20 = 2.9 g

The number of grains (n) of rice in weight 453.6 g of the bag of rice  can be calculated as:

n = 453.6/2.9

n = 156.4 ≈ 157

Therefore, the number of grains can be considered equal to 157 grains of rice.

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Answer:

1) 3Fe + 2O(2, this is the subscript) - Fe(3)O(4)

2) 2Sr + O(2) - 2SrO

3) Sn + 2NaOH - Na(2)SnO(2) + H(2)

4) 2K + Br(2) -2KBr

5) 2C(8)H(18) + 25O(2) - 16CO(2) + 18H(2)O

La agrupación de elementos de limpieza y cocción se puede realizar de varias formas diferentes, por ejemplo: almacenar elementos de limpieza, por ejemplo, una aspiradora, toallas blancas, cepillo para fregar en un lugar fresco y seco.

El artículo utilizado para la limpieza en el hogar se conoce como herramientas de limpieza. El propósito de las herramientas de limpieza es mantener la salud e higiene personal en el hogar. Ejemplos de artículos de limpieza incluyen:

Por otro lado, los artículos de cocina también se conocen como utensilios domésticos. Tener a mano los utensilios culinarios más importantes del hogar puede hacer su vida mucho más sencilla. Ejemplos de artículos para cocinar incluyen:

La agrupación de elementos de limpieza y cocción se puede realizar de varias formas diferentes, tales como:

Por lo tanto, de la explicación anterior, podemos concluir que hemos entendido cómo agrupar los elementos que usa tanto para limpiar como para cocinar en el hogar.

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solids are similar to liquids in that both are condensed states, with particles that are far closer together than those of a gas. However, while liquids are fluid, solids are not. The particles of most solids are packed tightly together in an orderly arrangement. The motion of individual atoms, ions, or molecules in a solid is restricted to vibrational motion about a fixed point. Solids are almost completely incompressible and are the densest of the three states of matter.

Answer:

They are called inert gases because they have the full 8 valence electrons in the outer shell. Making them nonreactive.

Explanation:

Answer:53.33

Explanation:100-(40.0+6.67)

53.3%

Answer:In chemistry, an oxidizing agent (oxidant, oxidizer), or oxidising agent (oxidiser) is a substance that has the ability to oxidize other substances — in other words to accept their electrons.

Explanation:

The phrase which describes an oxidizing agent is the substance that is reduced because it gains electrons. Thus option D is correct.

An oxidizing agent is defined as a chemical spices that tends to oxidize other substances that is causes increase in the oxidation state of the substance by making it lose electrons and the oxidizing agent itself gains electrons.

It can be defined as a substance that causes oxidation by being reduced and gaining electrons.

Any substance that oxidizes another substance is referred to as an oxidizer.

Oxidizing agents can be defined as an electron acceptor agents or as an electron transferring substance.

Thus, the phrase which describes an oxidizing agent is the substance that is reduced because it gains electrons. Thus option D is correct.

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Your question is incomplete, but probably your complete question was

Which describes the oxidizing agent in a chemical reaction?

A. the substance that is oxidized because it loses electrons

B. the substance that is reduced because it loses electrons

C. the substance that is oxidized because it gains electrons

D. the substance that is reduced because it gains electrons

When heat is absorbed by the solution, the solution's q value is negative. This denotes that the reaction is endothermic, absorbs heat from the solution, and has a positive reaction q.

Yes, it can be negative, in which case one needs a heat sink. Examples of such sinks include melting or evaporation. The source term in an equation for energy conservation could be positive or negative. The temperature of the node will drop if the magnitude of the negative heat source is greater than the heat flow into the system.

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We use the MO diagram for a homonuclear diatomic species (since C and N are neighbours, we treat them as the "same").

The first two electrons contribute to bonding. The next two are anti-bonding.

The next six contribute to bonding, and the following six are anti-bonding.

So, if we start with CN+, which has 4+5-1 (8) valence electrons, we note that the first two electrons contribute to bonding, while the next two cancel this out; the next four contribute to bonding, so the bond order is 4/2 = 2.

If we add one more electron to get CN, there are now 5 bonding electrons, giving bond order 5/2=2.5.

Adding one more to give CN- would give the bond order 6/2 = 3. (If we added more electrons, each one would lower the bond order.)

Given a series of molecules with identical skeletal structures, the one with the highest bond order has the highest bond energy:

CN+ < CN < CN-

Lewis structures will verify that CN- has a triple bond, but they do not work particularly well for CN+ and CN.

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Answer:

5*10^25 atoms of carbon

Explanation:

Approximately 47065.7 J of energy is required to heat 77.0 g of \(H_2O\)(s) at -12.0\(^oC\) to \(H_2O\)(g) at 137.0\(^oC\) at 1 atm.

As it controls the many processes and transformations that take place in chemical reactions, energy is a key term in chemistry. Energy in chemistry can take on various forms, including potential energy and kinetic energy. While kinetic energy is the energy connected with motion, potential energy is the energy that is held in chemical compounds. Potential energy is transformed into kinetic energy during chemical processes, and vice versa.

Energy gained by ice cubes = mass of ice x specific heat of ice x change in temperature

Energy gained by ice cubes = 20.0  x 2.09  x (0 - (-12.0)

Energy gained by ice cubes = 20.0 g x 2.09  x 12.0

Energy gained by ice cubes = 500.4 J

Energy lost by water = mass of water x specific heat of water x change in temperature

Energy lost by water = 225  x 4.18  x (25.0 - \(T_f\))

Energy lost by water = 9397.5 - 4.18  x 225 x \(T_f\)

500.4 = 9397.5 J - 4.18 x 225  x\(T_f\)

4.18  x 225  x \(T_f\)= 9397.5 - 500.4

\(T_f\) = (9397.5  - 500.4 ) / (4.18  x 225 )

\(T_f\)≈ 10.1\(^oC\)

Energy = mass x specific heat x change in temperature

Energy = 77.0  x 4.18  x (137.0- (-12.0))

Energy ≈ 77.0  x 4.18  x 149.0

Energy ≈ 47065.7 J

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Answer:

True

Explanation:

MgO > CaO > NaF > KCl are the following compounds with decreasing order of lattice energy.

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Any orderly configuration of points and objects over a region or in space, such as the geometric configuration of the atoms within a crystal. Fissionable material is arranged geometrically in a nuclear reactor and is also referred to as a "space lattice."

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Examples of such alloys are Hastelloy, Inconel, Waspaloy, Rene alloys, Incoloy, MP98T, TMS alloys, and CMSX single crystal alloys. Superalloy development has relied heavily on both chemical and process innovations.

hope this helps

:))

Answer:

Hastelloy,Inconel,Waspaloy,Rene alloys,and CMSX single crystal alloys.

Answer:

used in irrigation to transfer water over a barrier

The data set with the smallest standard deviation is the more accurate one.

The response that has the smaller standard deviation

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Answer:

I believe it is density.

Explanation:

Hope this helps!

There are a total of 3 different types of atoms (carbon, hydrogen, and oxygen) in this molecule, and the number of elements is 3

A molecule is the smallest particle of a chemical compound that retains its chemical properties. It consists of two or more atoms chemically bonded together through shared electrons to form a stable entity. The properties and behavior of a molecule are determined by its composition and the arrangement of its constituent atoms.

The chemical formula of a molecule indicates the types and number of atoms that comprise it. For example, water is a molecule composed of two hydrogen atoms and one oxygen atom, and its chemical formula is H2O. Molecules can be either simple or complex, and they can be found in various states of matter, including solid, liquid, and gas.

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Answer:

As the level of carbon dioxide in the blood increases, more H+ is produced and the pH decreases. This increase in carbon dioxide and subsequent decrease in pH reduce the affinity of hemoglobin for oxygen. The oxygen dissociates from the Hb molecule, shifting the oxygen dissociation curve to the right.

0.84 milligrams of a 2. 000 mg sample remain after 6. 55 years, according to radioactive decay.

Given data,

\(t\frac{1}{2} of Co-60 = 5.20years\)

amount of sample = 2.000mg initially = 0.002grams

According to radioactive decay,

\(N_{t} = N_{0}e^{-λt}\)

(\(N_{0} - 0.002\) )λ = \(\frac{0.693}{t\frac{1}{2} }\) = \(\frac{0.693}{5.20}\)  = 0.133

According to radioactive decay,

\(N_{t} = N_{0}e^{-λt}\)

\(lnN_{t} = lnN_{0}\) - λt

\(lnN_{t}\) = ln0.002 - (0.133×6.55)

       = -6.21 - 0.87 = -7.08 = 0.00084g = 0.84mg

Therefore, 0.84 milligrams of a 2. 000 mg sample remain after 6. 55 years.

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Answer:

121.14 g H20

Explanation:

2 (atomic weight of H2) + 16 (atomic weight of oxygen)= 18

6.73 x 18= 121.14 g