Fe3+ and S2- write the formula for the compound that would be formed

Answer:

THE CORRECT ANSWER IS THE PRINCIPLE OF ORIGINAL LATERAL CONTINUITY. THIS PRINCIPLE STATES THE RELATIONSHIP BETWEEN SEDIMENTARY ROCKS.

Explanation:

Explanation:

Hydrogen is collected by downward displacement of water as it is less denser than water. Hence it comes out at the surface of water . It is insoluble in water so it does not dissolve in water. ... So, it is impossible to collect hydrogen gas in air medium.22-O

Answer:

1.38 × 10²⁰ zinc ions

Explanation:

Step 1: Given data

Moles of Zn²⁺: 2.29 × 10⁻⁴ mol

Step 2: Convert 2.29 × 10⁻⁴ moles to ions

To convert moles to ions, we need a conversion factor: Avogadro's number. There are 6.02 × 10²³ Zn²⁺ ions in 1 mole of Zn²⁺ ions.

2.29 × 10⁻⁴ mol × 6.02 × 10²³ ions/1 mol = 1.38 × 10²⁰ ions

The qualities Tom Walker and his wife have in common were they both were grasping and without conscience

The question has been asked from the story "The Devil and Tom Walker" by Washington Irving. As the story describes Tom's encounter with the devil, he is a complex character. However, he and his wife seem to complement each other well and have some personality traits in common. Tom and his wife are both miserly, avaricious, cruel, and morally void.

More so than her husband, Tom's stereotypically nagging, scolding wife verbally and perhaps even physically abuses him when she's not hoarding his valuables. Tom's wife courageously decides to accept Old Scratch's offer to sell her husband's soul for money when Tom first rejects it. She takes the family's silver into the swamp with her so she may haggle with the devil.

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Ozone gas can be smelled in the air after a thunderstorm as a result of  reactions between oxides of nitrogen and volatile organic compounds.

Ozone gas can be produced due to chemical reactions between oxides of nitrogen and volatile organic compounds. This reaction occurs when pollututed gas is emitted from vehicles react and other activities with each other in the presence of sunlight.

So we can canclude that Ozone gas can be smelled in the air after a thunderstorm as a result of  reactions between oxides of nitrogen and volatile organic co

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

How many moles of ethyl alcohol, C2H5OH, are present in 65 mL of a 1.5 M

?solution

Explanation:

How many moles of ethyl alcohol, C2H5OH, are present in 65 mL of a 1.5 M

?solution

Answer:

i dont know. Chemistry is really hard.

Explanation:

sorry

The numerical value of Kc for the given reaction, with the equilibrium mixture containing 0.0450 M PCl3, 0.116 M Cl2, and 25.8 M PCl5, is approximately 4942.03.

To calculate the numerical value of Kc for the given reaction, we need to set up an expression for the equilibrium constant using the concentrations of the species involved.

The balanced equation for the reaction is:

PCl3 (g) + Cl2 (g) ⇌ PCl5 (g)

The equilibrium constant expression, Kc, is given by:

Kc = [PCI5] / ([PCl3] * [Cl2])

Given the equilibrium concentrations:

[PCl3] = 0.0450 M

[Cl2] = 0.116 M

[PCI5] = 25.8 M

Substituting these values into the equilibrium constant expression, we have:

Kc = (25.8 M) / ((0.0450 M) * (0.116 M))

Calculating Kc:

Kc = 25.8 M / (0.00522 M^2)

Kc = 4942.03

Therefore, the numerical value of Kc for the given reaction, with the equilibrium mixture containing 0.0450 M PCl3, 0.116 M Cl2, and 25.8 M PCl5, is approximately 4942.03.

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The question requires us to calculate the number of atoms in 25.75 g of Hg, 0.0740 g of Mg and 160 g of Br.

To calculate the number of atoms in a sample, given its mass, we need to use the Avogadro's number, which defines the number of particles (atoms, molecules, ions etc.) in 1 mol of any substance as 6.02 x 10^23 particles.

Using the Avogadro's number, we can write:

1 mol of substance (in mol) = atomic mass or molar mass (in g) --------------- 6.02 x 10^23 particles

mass of a sample (in g) ----------------------------- x

(where x is the value we want to calculate - the number of particles).

Solving for x, we'll have:

Therefore, to calculate the number of atoms in the samples given by the question, we need the atomic mass of the elements (Hg, Mg and Br), the mass of the sample (given by the question) and the Avogadro number (6.02 x 10^23 particles/mol).

Next, we'll calculate the number of atoms for each sample using the equation above:

• For 25.75 g of Hg:

The atomic mass of Hg is 200.59 u. We can apply the equation as it follows:

Therefore, there are 7.728 x 10^22 atoms in 25.75 g of Hg.

For 0.0740 g of Mg:

The atomic mass of Mg is 24.305 u. We can calculate the amount of atoms as it follows:

Answer:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Answer: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.

Explanation:

Answer:

True

Explanation:

hope this helps mate

1. The fact that an atom may be further divided into protons, neutrons, and electrons disproves the idea that it is indivisible. The smallest particle that participates in chemical processes is an atom, nevertheless. Dalton asserts that the atoms of the same element are identical in every way.

Dalton believed that atoms were the smallest particles of matter, and he modelled them using wooden balls by imagining them to be solid, hard spheres, similar to billiard (pool) balls.

2. In 1915, Niels Bohr put forth his Bohr Model of the Atom. Some refer to Bohr's Model as the Rutherford-Bohr Model because it is a revision of the earlier Rutherford Model. Quantum mechanics serves as the foundation for the current atom model. The Bohr Model has various flaws, but it's significant since it captures the majority of the agreed-upon aspects of atomic theory without requiring as much complex arithmetic as the contemporary formulation. The Rydberg formula for the spectrum emission lines of atomic hydrogen is explained by the Bohr Model, in contrast to older models.

3.Based on the placements of the elements in the periodic table, Mendeleev's periodic table assisted in correcting the atomic masses of some of the elements.

Mendeleev's periodic table's shortcomings Hydrogen cannot, of course, be assigned a stable position in the periodic table. The fourth, fifth, and sixth periods each have three items; the rationale behind this omission was not provided. Long after Mendeleev first suggested his periodic division of elements, isotopes were found.

4. Isaac Newton must set aside his obsession with alchemy in favor of genuine chemistry

According to Newton's writings, one of the main objectives of his alchemy may have been to find the philosopher's stone, a substance thought to change base metals into gold, and potentially to a lesser extent, the greatly sought-after Elixir of Life.

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Answer:

In the above reaction, sulfur dioxide and oxygen react together to form sulfur trioxide. This means that an increase in pressure would move the equilibrium to the right and result in more sulfur trioxide being formed. Pressure can only affect the position of equilibrium if there is a change in the total gas volume.

Answer:

Second Option ([O2]*[NO]^2)/[NO2]^2

Explanation:

To find the Kc value of a reaction, you must divide the concentration of the products over the concentration of the reactants (divide right side of the reaction by the left side of the reaction)

you must also remember to turn the multiplier prefix such as the '2' in the 2NO into an exponent for that particular molecule in the Kc equation

as such, the second option is correct

Answer:

Explanation:

Part A

Balancing means that the same number of elements on one side of the equation must be the same as the number of elements on the other side.

You need 3 carbons on the right side because right now there is only one. Try putting a 3 in front of the CO2 and see if the oxygens come into balance as well.

Al2(CO3)3 ⟶ Al2O3 + ___CO2

Al2(CO3)3 ⟶ Al2O3 + 3CO2

Balance check

Element                Left           Right

Al                            2                2

Carbon(C)              3                3

Oxygen                  9               3 + 6 = 9

And it is balanced.

Part B

It's a decomposition of some kind. Two smaller molecules are created from one larger one.

Over-tilling and Over farming are the two processes that can harm the fertility of the soil.

Over-tilling refers to the exceeding levels of tilling and levelling the soil which adversely affects the quality of the soil. This is because tillage fractures the soil, it disrupts soil structure, accelerating surface runoff and soil erosion. Tilling of soil also reduces crop residue, which help cushion the force of pounding raindrops.

Without crop residue, soil particles become more easily dislodged, being moved or 'splashed' away. The splashed particles clog soil pores, effectively sealing off the soil's surface, resulting in poor water infiltration and hence subsequently affects the soil fertility.

Similarly, the main effect of over-farming is soil depletion. When crops are grown in the same place year after year, the soil becomes depleted of the nutrients that the plants need to grow. This can lead to lower yields and poorer quality crops. In extreme cases, it can lead to desertification.

So, these two are the processes that can harm soil fertility.

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The balanced equation of the reaction could be written as; \(HN_{5} O_{3} + Mg ------ > MgO + HNO_{3}\)

We know that in chemistry, the term reaction has to do with the combination of two or more species to give a product. Now the process of the reaction would alter the chemical composition of the reactants as we move on the way to get the ne substances called the products. There would be a breaking down of the bonds that holds the reactant molecules together and then there is a recombination of the atoms in a different way so as to obtain the products of the reaction. This is how a chemical reaction takes place in a given system.

In this case we have the oxidation of the compound called \(HN_{5} O_{3}\). In this case, the compound is actually being oxidized as we can see from the process that would be shown in the reaction equation accurately.

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Answer:

Explanation:

2.2 g/mL is the answer.

Answer:

The combustion of diborane (B2H6) is as follows:

2B2H6(g) + 6O2(g) → 4H2O(g) + B4O(g)

The balanced chemical equation shows that 2 moles of B2H6 react with 6 moles of O2 to produce 4 moles of H2O and 1 mole of B4O. We can use this information to calculate the amount of heat released by the combustion of 0.491 g of B2H6:

0.491 g B2H6 × (1 mol B2H6/27.67 g B2H6) × (1 mole B4O/2 moles B2H6) × (-2037 kJ/mol B4O) = -7.89 kJ

The negative sign indicates that the reaction releases heat.

The heat released by the reaction is absorbed by the calorimeter, which causes its temperature to increase. We can use the equation:

q = Ccalorimeter × ΔT

where q is the amount of heat absorbed by the calorimeter, Ccalorimeter is the heat capacity of the calorimeter, and ΔT is the change in temperature of the calorimeter.

Rearranging the equation, we get:

ΔT = q/Ccalorimeter

Substituting the values we obtained, we get:

ΔT = (-7.89 kJ)/(7.854 kJ/°C) = -1.005°C

The negative sign indicates that the temperature of the calorimeter decreases by 1.005°C. Therefore, the final temperature of the calorimeter is:

19.63°C - 1.005°C = 18.625°C

Rounding to the appropriate number of significant figures, the final temperature of the calorimeter is 18.6°C.

Hope this is what you are looking for.

The half reaction with a more positive standard reduction potential will proceed spontaneously in a redox reaction

The half reaction with a more positive standard reduction potential will undergo reduction when compared to the half reaction with a more negative standard reduction potential.

Oxidation-reduction reactions, often known as redox reactions, are a set of chemical reactions that involve electron transfer between reactants. In a redox reaction, one reactant is oxidized, losing electrons, while the other reactant is reduced, gaining electrons.

The oxidation half-reaction is the process of losing electrons and increasing the oxidation number, whereas the reduction half-reaction is the process of gaining electrons and decreasing the oxidation number. The total reaction is referred to as the redox reaction.

Half-reaction:Half-reaction refers to the two parts of an oxidation-reduction reaction that happen separately. A half-reaction must always be either an oxidation reaction or a reduction reaction. It also describes the movement of electrons and hydrogen ions in an equation.

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There are 237. 5 g of Sulfur,S in 475 g of SO2?

From the question, we can say that

Therefore,

The molar mass for SO2 = 32 + (16 × 2) g/mol  = 64 g/mol

Now,

If 1 mole of SO2 contains 1 mole of S

Then 64 g of SO2, will contain 32g of S;

Such that

475 g of SO2 will give { \(\frac{ 32g of S) ( 475 g of SO2)}{64 of SO2}\) }  = 237. 5 g of Sulfur.

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Answer:

16875 J

Explanation:

KINETIC ENERGY EQUATION = 1/2 m v^2

= 1/2 times mass times velocity of metres per second^2 (speed)

= 1/2 times 150 times by 15^2

= 16875 J (joules)

The average atomic mass of the element is 12.0107 amu.

To calculate the average atomic mass of the element in question, we can use the following formula:

average atomic mass = (mass of isotope 1 x abundance of isotope 1) + (mass of isotope 2 x abundance of isotope 2)

where "mass of isotope 1" is the mass of the first stable isotope (13 amu in this case), "abundance of isotope 1" is the percentage of that isotope in the element (1.07% in this case), "mass of isotope 2" is the mass of the second stable isotope (12 amu in this case), and "abundance of isotope 2" is the percentage of that isotope in the element (98.93% in this case).

Substituting the given values in the formula, we get:

average atomic mass = (13 amu x 1.07%) + (12 amu x 98.93%)

average atomic mass = (0.1391 amu) + (11.8716 amu)

average atomic mass = 12.0107 amu

Therefore, the average atomic mass of the element is 12.0107 amu.

This means that on average, one atom of this element weighs 12.0107 atomic mass units (amu), which is slightly heavier than the most abundant isotope (12 amu) due to the presence of the less abundant isotope (13 amu). This concept is important in chemistry because the mass of atoms plays a crucial role in determining their chemical and physical properties. The knowledge of the average atomic mass of an element is important in a wide range of applications, including analytical chemistry, geochemistry, and nuclear physics.

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Answer:

D. Each jar contains the same number of atoms

Explanation:

Each of jar containing 1 mole of the element has consisted of an equal number of atoms.

Each jar has been consisted of 1 mole of gas. The number of atoms in a mole of gas can be calculated with Avogadro's number.

Avogadro number has been the constant, that relates the particles and the sample constituents. The value of the Avogadro number has been \(\rm 6.023\;\times\;10^2^3\) .

1 mole of gas = Avogadro's number molecules

Thus, each of them containing 1 mole of the element has consisted of an equal number of atoms.

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Answer:

• 1 kilocaloric equals 1000 gram calories

• 1 kilocalorie is equals to 4184 Joules of energy.

Explanation:

One kilocalorie is equals to 1000 gram calories because one kilo is equals to or have 1000 grams. One kilocalorie is equals to 4184 Joules of energy while on the other hand, one calorie is equals to 4.184 Joules of energy because one calorie is 1000 times smaller than Kilocalorie so calorie has also 1000 times lower energy than kilocalorie. Kilo is the prefix which means 1000 so we can say that One kilocalorie is equals to 1000 gram calories.

Answer:

If n = 4, then the possible values of 1 and m depend on the equation or expression being used. Without more information, it is impossible to determine what the possible values of 1 and m might be. Can you please provide more context or information about the problem you are trying to solve?

Answer:

6.850767 grams is the answer

\(0.987 ~ \text{moles of Li} = 0.987 \times \text{Molar mass of Li}\\\\~~~~~~~~~~~~~~~~~~~~~~~=0.987 \times 6.941~ g\\\\~~~~~~~~~~~~~~~~~~~~~~~=6.850767~ g\)