what does the o in chemistry mean?

Answer:

6186.98

Explanation:

105.4 mol of nickel is 6186.98 nickel

Answer:

5 moles of  Fe₂(SO₄)₃  will be produced

Explanation:

Given data:

Number of moles of Fe₂(SO₄)₃ = ?

Number of moles of Fe react = 10 mol

Solution:

Chemical equation:

3H₂SO₄   +   2Fe    →        Fe₂(SO₄)₃ + 3H₂

Now we will compare the moles of iron and  Fe₂(SO₄)₃ .

                 Fe        :           Fe₂(SO₄)₃

                  2          :             1

                  10         :           1/2×10 = 5 mol

5 moles of  Fe₂(SO₄)₃  will be produced.

In the bicarbonate buffering system, carbon dioxide and water join to form carbonic acid, which dissociates into hydrogen and bicarbonate ions.

The blood's bicarbonate buffer system keeps the pH or H+ ion concentration where it needs to be.

The majority of blood is water, which breaks down into the hydroxide ions H+ and OH-.

The pH of the blood is set by the hydrogen ions, or H+. The blood's acidity or basicity will have an impact on how the body functions. A byproduct of respiration is dissolved carbon dioxide, or CO2, which is found in blood. When these react, carbonic acid, or H2 CO3, can be created. Being a weak acid, carbonic acid is willing to give up an H+ ion.

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Answer:

Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc)

Explanation: Hope i helped! :D

Answer:

acceleration

Explanation:

Combining "hydro" and "genes" in the context of the Latin roots, we can interpret it as "water origin" or "water-related origin."

The term "hydro" in Latin means "water." It is derived from the Greek word "hydor," which also signifies water. "Hydro" is commonly used as a prefix in scientific terms related to water or hydrogen. In the context of chemistry, "hydro" often denotes a compound or process involving water or hydrogen atoms. For example, hydrocarbon refers to organic compounds composed solely of hydrogen and carbon atoms.

On the other hand, "genes" in Latin is derived from the Greek word "genos," which translates to "origin" or "birth." In biology, the term "genes" refers to the segments of DNA that contain instructions for the development and functioning of living organisms. Genes determine various traits, such as physical characteristics, behavior, and susceptibility to certain diseases. They play a fundamental role in the transmission of hereditary information from one generation to another.

This interpretation aligns with the understanding that hydrogen, which is essential for life and abundant in water, plays a vital role in various biological and chemical processes.

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Density of the given sample is 12.66 grams per milliliter.

Mass per unit volume is the definition of a material's density. The degree to which matter is packed together is fundamentally measured by density. It is a particular physical characteristic of a specific thing.

Density = mass/volume

Given mass = 50g

Given Volume = 3.95mL

According to question, we are required to find the density in units : grams per milliliter

Since the given values for mass and volume are grams and milliliters respectively, no change in units is required.

Putting the given values in the formula, Density = mass/volume

Density = 50/3.95

Density = 12.658 grams per milliliter

We can say, Density = 12.66 grams per milliliter

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Answer:

d=m/

Explanation:

d is density, m is mass, v is volume

Given: m =10.4g, v=12.2mL

substituting in equation,

d=10.4/ 12.2

d=0.8524g/mL

To learn more about density:

The density of the liquid is 0.852 g/mL.

To calculate the density of the liquid, we need to use the formula:

Density = Mass / Volume

Given that the mass of the liquid is 10.4 g and the volume is 12.2 mL, we can substitute these values into the formula:

Density = 10.4 g / 12.2 mL

Simplifying this expression, we find:

Density = 0.852 g/mL

Density is a physical property of a substance and is defined as the amount of mass per unit volume. In this case, the density tells us that for every milliliter of the liquid, there is 0.852 grams of mass. The units of grams per milliliter (g/mL) indicate that the density is a ratio of mass to volume.It is important to note that the density of a substance can vary with temperature, so this value is only valid under the conditions at which the measurement was made. Additionally, the density can provide valuable information about the identity of a substance, as different substances have different densities.

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The temperature inside the freezer is approximately -164°C.

To solve this problem, we can use the combined gas law equation:

\((P1V1)/T1 = (P2V2)/T2\)

where P is the pressure, V is the volume, and T is the temperature of the gas.

We know that the initial volume of the balloon is 145 mL and the final volume is 35 mL. We also know that the initial temperature is 25°C or 298 K, and we need to find the final temperature.

Assuming the pressure of the gas remains constant, we can rearrange the combined gas law equation to solve for the final temperature:

\(T2 = (P2V2/T1)(P1/V1)\)

Plugging in the values we know, we get:

\(T2 = (1 atm * 35 mL/298 K)(1 atm/145 mL) = 0.0808 atm/mL\)

Multiplying both sides by 298 K and dividing by 0.0808 atm/mL, we get:

T2 = 109.15 K or approximately -164°C

Therefore, the temperature inside the freezer is approximately -164°C.

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Answer:

see below

Explanation:

K.E. = 1/2 * m * v^2

      = 1/2 * 2 * 5^2     j

Answer:

Explanation:

move an object a greater distance than the distance that part of the machine was moved

Answer:

Explanation:

Answer:

See Explanation

Explanation:

There is a concept in chemistry called the denticity of  a ligand. The denticity of a ligand refers to the number of donor groups in a given ligand that can bond to a central metal atom or ion. In other words, it is the number of bonding positions available in a ligand.

Ammonia has only one bonding position(monodentate ligand); that is, the lone pair on its nitrogen atom. Hence, six ammonia ligands are required to form an octahedral complex with the nickel center.

However, ethylenediamine has two positions available for bonding to a central metal atom or ion. These are the two nitrogen atoms present in the molecule. Hence, each molecule of ethylenediamine is bidentate, bonding to the nickel using two "teeth". Hence, three ethylenediamine molecules form six bonds to the nickel center as required in an octahedral complex.

Answer:

2CH3CHO + O2 → 2CH3COOH

The temperature increase from 20 °C to 46 °C indicates that the reaction between zinc and copper sulfate solution is exothermic, with heat being released into the surroundings.

In the given reaction between zinc and copper sulfate solution, the temperature change can provide insights into the type of heat change occurring during the reaction. Based on the provided information, the initial temperature of the copper sulfate solution was 20 °C, and the final temperature of the mixture after the reaction was 46 °C.

The temperature increase observed in this reaction indicates an exothermic heat change. An exothermic reaction releases heat energy into the surroundings, resulting in a temperature rise. In this case, the reaction between zinc and copper sulfate solution is exothermic because the final temperature is higher than the initial temperature.

During the reaction, zinc displaces copper from copper sulfate to form zinc sulfate and copper metal. This displacement reaction is known as a single displacement or redox reaction. Zinc is more reactive than copper and therefore replaces copper in the compound.

The formation of new chemical bonds during the reaction releases energy in the form of heat. This energy is transferred to the surroundings, leading to an increase in temperature. The heat released is greater than the heat absorbed, resulting in a net increase in temperature.

The exothermic nature of this reaction can be explained by the difference in bond energies between the reactants and products. The breaking of bonds in the reactants requires energy input, while the formation of new bonds in the products releases energy.

In this case, the energy released during the formation of zinc sulfate and copper metal is greater than the energy required to break the bonds in copper sulfate and zinc.

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Answer:

A.) 14.75 mol

Explanation:

To find the amount of moles, you need to use the Ideal Gas Law equation:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = number of moles

-----> R = Ideal Gas Constant (0.08206 L*atm/K*mol)

-----> T = temperature (K)

You can plug the given values and the constant into the equation and simplify to find "n".

P = 10 atm                    R = 0.08206 L*atm/K*mol

V = 27 L                       T = 223 K

n = ? moles

PV = nRT                                                                   <----- Ideal Gas Law

(10 atm)(27 L) = n(0.08206 L*atm/K*mol)(223 K)   <----- Insert variables

270 atm*L = n(18.299 L*atm/mol)                           <----- Mutliply

14.75 mol = n                                               <----- Divide both sides by 18.299

Answer:

A) and D)

Explanation:

I just completed this assignment and these are the correct options!

In the given image, the compounds that represents ether are option 1 and 4, respectively.

Ether is a class of organic compounds that contain an oxygen atom bonded to two alkyl or aryl groups. The general formula for ethers is \(\rm R-O-R'\), where R and R' are alkyl or aryl groups.

Therefore, compound 1 and compound 4 represents ether. The correct answer is option 1 and 4, respectively.

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The conversions that could be performed with these two conversion factors alone, Density—> molar mass or/formula mass—> is volume ---> moles; option D

Conversion factors are expressions or values which are used to convert from one unit or value to another.

The conversion factor given is:

Density—> molar mass or/formula mass—>

volume = density/mass

moles = mass/molar mass

Volume to moles = density/mass -->  mass/ molar mass

Volume to moles = density ---> molar mass or formula mass

The conversion of volume to moles will therefore require density and molar mass or formula.

In conclusion, conversion factors are used to convert from one unit  value to another.

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Answer:

See explanation

Explanation:

One basic thing that we must keep in mind is that A and B are both dienes.

The NMR spectrum and absorption maxima of A and B indicates that A may be a conjugated diene while B may be an isolated diene.

Remember that conjugated dienes shift the absorption maxima to longer wavelengths due to π - π* transition.

The two structures attached may suffice for compounds A and B

Answer:

This is your answer

Hope it helps!!!

\(\\ \tt\leadsto \dfrac{d[NH_3]}{dt}=1.50\times 10^{-6}\)

\(\\ \tt\leadsto \dfrac{d[H_2]}{dt}=\dfrac{3}{2}\dfrac{d[NH_3]}{dt}\)

\(\\ \tt\leadsto \dfrac{d[H_2]}{dt}=\dfrac{3}{2}(1.5\times 10^{-6})\)

\(\\ \tt\leadsto \dfrac{d[H_2]}{dt}=2.25\times 10^{-6}Ms^{-1}\)

M is molarity here not metre

The average rate of appearance of H2 over the time period from t = 0 s to \(\rm t = 5.48\times10^3 s\ is\ 2.25\times10^{-6}\) M/s.

To find the average rate of appearance of \(\rm H_2\), we can use the stoichiometry of the reaction to relate it to the rate of disappearance of \(\rm NH_3\).

From the balanced equation: \(\rm 2NH_3(g) - > N_2(g) + 3 H_2(g)\)

We can see that for every 2 moles of \(\rm NH_3\) that disappear, 3 moles of \(\rm H_2\) appear.

Given that the average rate of disappearance of \(\rm NH_3\ is\ 1.50\times10^{-6} M/s\), we can calculate the average rate of appearance of \(\rm H_2\) as follows:

Average rate of appearance of \(\rm H_2\) = (3/2) x (Average rate of disappearance of \(\rm NH_3\))

Average rate of appearance of \(\rm H_2\) = (3/2) x \(\rm (1.50\times10^{-6} M/s)\)

Average rate of appearance of \(\rm H_2\) = \(\rm 2.25\times10^{-6} M/s\)

Therefore, the average rate of appearance of \(\rm H_2\) over the time period from t = 0 s to \(\rm t = 5.48\times10^3 s\ is\ 2.25\times10^{-6}\) M/s.

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Answer:

3 atoms of Ba

2 x 1 = 2 atoms of Cl

2 x 3 = 6 atoms of O

So, the total number of atoms for each element in 3Ba(ClO3)2 are:

Barium (Ba): 3 atoms

Chlorine (Cl): 2 atoms

Oxygen (O): 6 atoms

Explanation:

The diagram shows a picture of a compound.

A compound is a substance that is made up of two or more different elements that are chemically bonded together in a specific ratio.

This means that the elements are combined in a way that creates a new substance with different physical and chemical properties than the individual elements.

Compounds can be formed through a variety of chemical reactions, such as combining elements through a chemical bond or through a reaction between an acid and a base.

So for the given diagram, we can see that it represents two or more elements chemically combined.

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The pressure inside the container will become 0.71 atm if the piston is moved to the 1.40 L

To obtain the pressure inside the container, we'll begin by listing out the given parameters from the question. This is given below:

Since the temperature is constant, we can determine the pressure inside the container by using the Boyle's law equation as illustrated below:

P₁V₁ = P₂V₂

1.00 × 1.00 = P₂ × 1.40

1 = P₂ × 1.40

Divide both sides by 1.40

P₂ = 1 / 1.40

P₂ = 0.71 atm

Thus, from the calculation made above, we can conclude that the pressure inside the container is 0.71 atm

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Answer;      

need more info.........

Explanation:

Answer:

H2CO

Explanation:

Becuase it has 2 sigma bonds plus one pi bond and one sigma bond that consitute the double bond between C and O.

Answer:

B. H2CO

Explanation:

The concentration of the solution is 0.3 mol/L.

We know that concentration is the amount of substances that is present. We know that the concentration can be measured by the use of several units and one of the units that we can be able to use is the  mol/L.

We have that the concentration in w/w is 5.0% and this means that the mass of water in the solution is 5g. From the density of the solution;

volume = mass/density

= 5g/  1.000 g/mL

= 5 mL or 0.005 L

Number of moles of sugar = 5g/342.30 g/mol

= 0.015 moles

Concentration = Number of moles/volume

=  0.015 moles/0.005 L

= 0.3 mol/L

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The equilibrium expression can be written as follows:

K = [CaCO₃] × [H₂]⁴

------------------

[CaO] × [CH₄] × [H₂O]²

In this equilibrium expression, the square brackets represent the concentrations of the species involved in the reaction, and the coefficients of the balanced equation indicate the stoichiometric coefficients of the corresponding species.

The concentration of a pure solid (CaCO₃ in this case) is not included in the equilibrium expression, as it remains constant throughout the reaction.

The equilibrium constant (K) represents the ratio of the product concentrations to the reactant concentrations at equilibrium, each raised to the power of their respective stoichiometric coefficients. The specific values of these concentrations depend on the initial conditions, and K remains constant as long as the temperature is unchanged.

It is important to note that the equilibrium constant expression is written based on the balanced chemical equation. The stoichiometric coefficients determine the relationship between the concentrations of reactants and products, allowing us to express the equilibrium state quantitatively using the equilibrium expression.

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Answer:

H2(g) + F2(g) ----> 2HF(g)

Answer = F2