does that identity of an atom change during radioactive decay

Answer:

95 N

Explanation:

they are both pushing in the same direction so you simply add

75+20=95

The density of chlorine will be  3.163 g/L.

The mass of a substance per unit of volume is its density. According to Graham's law, a gas's rate of effusion is inversely proportional to its square root density. When a material's particles are concentrated in a low area, they tend to travel to the place where the concentration is highest. When we use perfume or a scented spray in one area of the room and subsequently can smell it throughout the entire space, that is a simple illustration of this process.

rate1 = H2 = 5.93

rate2 = Cl2 = 1

The molecular weight of H2 = 2.016

The molecular weight of Cl2 = x.

By Graham's Law:

5.93 / 1 = x / 2.016

35.1649 = x / 2.016

x = 70.89 g/mol

Determine gas density by volume

70.89 g / 22.414 L = 3.163 g/L

Learn more about Density

brainly.com/question/28929608

#SPJ4

Answer:Mineral is a natural material.

Explanation:Mineral is a solid natural inorganic substance.

Okay, let's solve this step-by-step without using quadratics:

1) The equilibrium constant Kc = 0.36 means the equilibrium lies to the left. So there will be more N2O4 than NO2 at equilibrium.

2) The initial concentration of N2O4 is 0.1 mol dm^-3. Let's call this [N2O4]initial.

3) At equilibrium, the concentrations of N2O4 and NO2 will be [N2O4]equil and [NO2]equil respectively.

4) We know the equilibrium constant expression for this reaction is:

Kc = ([NO2]equil)^2 / [N2O4]equil

5) Setting this equal to 0.36 and plugging in 0.1 for [N2O4]initial, we get:

0.36 = ([NO2]equil)^2 / (0.1 - [NO2]equil)

6) Simplifying, we get:

0.036 = [NO2]equil^2

7) Taking the square root of both sides, we get:

[NO2]equil = 0.06 mol dm^-3

So the equilibrium concentration of NO2 is 0.06 mol dm^-3.

Let me know if you have any other questions! I can also provide a more step-by-step explanation if needed.

The balanced chemical equation for the decomposition of potassium chlorate is:

2 KClO3(s) → 2 KCl(s) + 3 O2(g)

According to the equation, 2 moles of KCl are produced for every 2 moles of KClO3 that decompose. The molar mass of KClO3 is 122.55 g/mol, while the molar mass of KCl is 74.55 g/mol. Therefore, we can use the following steps to calculate the amount of KCl produced:

Calculate the number of moles of KClO3:

moles of KClO3 = mass of KClO3 / molar mass of KClO3

moles of KClO3 = 25 g / 122.55 g/mol

moles of KClO3 = 0.2036 mol

Use the mole ratio from the balanced equation to find the number of moles of KCl produced:

moles of KCl = moles of KClO3 x (2 moles of KCl / 2 moles of KClO3)

moles of KCl = 0.2036 mol x (2/2)

moles of KCl = 0.2036 mol

Calculate the mass of KCl produced:

mass of KCl = moles of KCl x molar mass of KCl

mass of KCl = 0.2036 mol x 74.55 g/mol

mass of KCl = 15.18 g

Therefore, 15.18 grams of potassium chloride are produced if 25 grams of potassium chlorate decompose.

Answer: Malleability

Explanation: Is because metals have mobile electrons in their s orbitals.

Hope this helps..

Answer:

The answer to this question is mobile electrons in s orbitals.

The answer to the following question on edg is directional electrons in p orbitals.

Explanation:

Methanol's combustion enthalpy can be calculated at -540 (kJ mol-1).

Methanol, the most basic form of alcohol (CH3OH), serves as the chemical basis for countless items used in daily life, such as paints, plastics, auto parts, and building supplies. Additionally, methanol is a renewable resource that powers fuel cells, boilers, cook stoves, ships, automobiles, trucks, and buses.

Energy required to dissociate the bonds connecting reactants

3 × 413 + 358 + 464 + 1.5 × 498 (kJ mol-1) / 2808 (kJ mol-1);

Total energy released when products form bonds

4 × 464 + 2 × 746 (kJ mol-1) / 3348 (kJ mol-1);

∆H = -540 (kJ mol-1).

To know more about methanol  visit:

https://brainly.com/question/16866907

#SPJ4

The complete question is -

Methanol is made in large quantities as it is used in the production of polymers and in fuels.

The enthalpy of combustion of methanol can be determined theoretically or experimentally.

CH₃OH(l) + 1 O₂(g) → CO₂(g) + 2H₂O(g)

Using the information from Table 10 of the Data Booklet, determine the theoretical enthalpy of combustion of methanol.

The single mark placed on the sidewalk by Julie has been acting as the reference point for detecting the motion of the snail. Thus, option D is correct.

The snail has been the shelled animal that has been mostly residing in the resting condition with limited movement. To evaluate the movement of the snail, there has been the consideration of a point that was the starting point from the movement.

The line that has been set across the sidewalk has been acting as the reference, and the distance traveled has been calculated from that point. Thus, option D is correct.

For more information about the reference point, refer to the link:

https://brainly.com/question/1674904

Explanation:

So,0.3125 * 10 ^3 moles of Sulphur combines with 0.3125 * 10^3 moles of Oxygen to from SO2. Therfore mass ratio of SO2 : SO3 = 10 : 15 = 2:3.

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

Learn more about number of atoms here: https://brainly.com/question/6258301

#SPJ1

Answer:

Explanation:

its B 1mole

A reaction that requires energy would be spontaneous.

A spontaneous process is one in which we can proceed without additional input of energy releasing free energy and then moves to a lower more stable thermodynamical state.

Therefore, A reaction that requires energy would be spontaneous process. (option b)

to know more refer to:

https://brainly.com/question/22469071

#SPJ2

The Lewis structure for iodoethane (C2H,1) is as follows.

I - C - C - H

| |

H H

| |

H H

A Lewis structure, also known as a Lewis dot diagram, is a way to represent the bonding and non-bonding electrons in a molecule. It is named after Gilbert N. Lewis, who introduced it in 1916. A Lewis structure shows the chemical symbol of each atom in the molecule and the electrons that are involved in the chemical bonds. It is used to predict the molecular geometry, reactivity, and other chemical properties of a molecule.

In this structure, the central atom is the carbon atom, and the outer atoms are the hydrogen and iodine atoms. The carbon atoms each have four bonds, which are satisfied by the three hydrogen atoms and the iodine atom. The iodine atom has one lone pair, which is not shown in the structure.

To learn more about Lewis's structure visit:

brainly.com/question/20300458

#SPJ4

Answer:

Correct: B

Explanation:

The first block wont move because:

Σf=3-3=0N.

The second block will move because:

Σf:5-3=2N (direction to the right).

The third block will move because:

Σf=3N (direction to the right).

Answer: The given reaction is a neutralization reaction.

Explanation:

When an acid chemically reacts with a base then it leads to the formation of salt and water.

For example, \(3KOH + H_{3}PO_{4} \rightarrow K_{3}PO_{4} + 3H_{2}O\)

Here, KOH is a the base and \(H_{3}PO_{4}\) is an acid which on chemical reaction with each other leads to the formation of salt \((K_{3}PO_{4})\) and water \((H_{2}O)\).

Thus, we can conclude that the given reaction is a neutralization reaction.

The volume percentage of silicon in the alloy is approximately 38.2%.

To calculate the volume percentage of silicon in the alloy, we need to consider the weight percentage and the densities of silicon and aluminium.

First, we calculate the volume of each component in the alloy based on their weight percentages. Since the density is defined as mass per unit volume, we can use the weight percentage to determine the mass of each component. For example, in 100 grams of the alloy, we have 16 grams of silicon and 84 grams of aluminium.

Next, we calculate the volume of silicon and aluminium by dividing their respective masses by their densities. Using the density of silicon (2.35 gm/cc), we find that the volume of silicon is approximately 6.81 cc. Similarly, using the density of aluminium (2.7 gm/cc), we find that the volume of aluminium is approximately 31.11 cc.

Finally, we calculate the volume percentage of silicon in the alloy by dividing the volume of silicon by the total volume of the alloy (sum of the volumes of silicon and aluminium) and multiplying by 100. In this case, the volume percentage of silicon in the alloy is approximately 38.2%.

Learn more about silicon

brainly.com/question/28213172

#SPJ11

If a student looks up an element on the periodic table. The table says that if the atomic number of the element is 12 and the mass number of the element is 40, then the number of protons would be 12 and the number of neutrons would be 28.

It is the sum of the mass of all the protons as well as the neutrons that are present inside the nucleus.

Whenever a student searches for an element on the periodic table. According to the table, the number of protons and neutrons would be 12 and 28 respectively if the element had an atomic number of 12 and a mass number of 40.

Thus, the number of protons for that element would be 12 and the number of neutrons would be 28.

To learn more about atomic mass from here, refer to the link;

brainly.com/question/11681718

#SPJ1

Photochemical smog results from the interaction of pollutants in the presence of sunlight.

Photochemical smog is a type of air pollution that forms when **pollutants** such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of **sunlight**. This process occurs in the lower atmosphere and can lead to the formation of harmful substances like ozone and particulate matter. Major sources of these pollutants include vehicle emissions, industrial processes, and the use of solvents. The formation of photochemical smog is highly dependent on weather conditions, with increased temperatures and sunlight contributing to more severe smog events. Reducing emissions of pollutants and promoting cleaner technologies can help mitigate the formation of photochemical smog and its impacts on human health and the environment.

Know more about photochemical smog here:

https://brainly.com/question/27960448

#SPJ11

Answer:

all of the above. they all are chemical reactions

The molecule H₁₂O₆ does not exist in nature. The formula H₁₂O₆ suggests the presence of 12 hydrogen atoms and 6 oxygen atoms.

However, such a configuration is highly unstable and does not conform to the principles of chemical bonding and stability. In a typical molecule of water (H₂O), two hydrogen atoms are bonded to one oxygen atom. The Lewis structure for water would represent this bonding arrangement. Each hydrogen atom contributes one valence electron, and oxygen contributes six valence electrons.

The Lewis structure for water would show two lines (representing covalent bonds) connecting the oxygen atom to each hydrogen atom. Additionally, the oxygen atom would have two lone pairs of electrons (represented by dots) surrounding it. It is important to note that the Lewis structure represents the valence electron arrangement in a molecule and provides insight into its bonding and geometry.

However, the Lewis structure alone may not capture the full 3D shape and molecular properties. In the case of H₁₂O₆, the presence of 12 hydrogen atoms and 6 oxygen atoms is highly unlikely due to the unfavorable electron configuration and excessive charge repulsion.

know more about hydrogen atoms here:

https://brainly.com/question/28499820

#SPJ8

Answer: 0.035 M

Explanation:

When discussing distance in the solar system,you use Relative Distance.This tells you the space between two objects with location.

D. Relative distance

The relative distance is the distance that you are felt to cover up, taking the time used to obtain there. Distance relative to a particular reference point, typically one in motion.

Relative distance is calculated measuring distance, using metrics such as time, effort, or cost.

In space, Relative distance means how far apart the planets are when compared to each other and the sun.

Thus, the correct option is D.

Learn more:

brainly.com/question/16347919

The response to the question is that the solution's pH is 1.82.

A solution's acidity or alkalinity can be evaluated by its pH. Using a scale of 0 to 14, with 0 representing the most acidity, 7 having neutral, and 14 the most alkaline, it is expressed. The mixture is neither alkaline nor acidic when the pH is 7, which is regarded as neutral.

The perfect outcome will be 0.15 M because of solutions are the same molarity. We may determine the ph. using the solution for the ph level of an acidic solution and also its conjugate base.

pH = -log[0.15] = 1.82

The solution has a pH of 1.82.

To know more about pH solution visit:

brainly.com/question/30752891

#SPJ1

The mobile phase used in column chromatography to separate the product ester and excess reagent after a Fischer esterification should be a polar solvent.

This is because the product ester and excess reagent are both polar molecules, and so a polar solvent will be able to effectively separate the two components. Experimental analysis would need to be done to identify the proper conditions for such a separation. This could include testing different mobile phases with varying polarities, testing different amounts of silica gel, and testing different flow rates and column lengths. In addition, different retention times could be monitored and compared to identify the conditions that result in the most efficient separation of the product ester and excess reagent.

learn more about polar solvent Refer:brainly.com/question/15185907

#SPJ1

Thus, the rate of disappearance of O₂ is 0.37 mol L⁻¹ s⁻¹ , the rate of appearance of CO₂ is 0.2467 mol L⁻¹ s⁻¹

The rate at which a chemical reaction moves forward is known as the reaction rate in chemistry. It is frequently defined in terms of either the concentration of a reactant that is consumed in a unit of time or the concentration of a product that is generated in a unit of time (amount per unit volume).

The equation becomes:

C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g)

Rate of reaction = \(-\frac{d[C_2H_4]}{dt}\) = \(-\frac{1}{3} \frac{d[O_2]}{dt}\) = \(+\frac{1}{2} \frac{d[CO_2]}{dt}\) = \(+\frac{1}{2} \frac{d[H_2O]}{dt}\)

It is given that, the rate of disappearance of O₂ is 0.37 mol L⁻¹ s⁻¹.

So, \(-\frac{1}{3} \frac{d[O_2]}{dt} =\) \(+\frac{1}{2} \frac{d[CO_2]}{dt}\)

or,  \(-\frac{1}{3} \frac{d[O_2]}{dt}\)  × (-0.37 mol L⁻¹ s⁻¹) = \(\frac{d[CO_2]}{dt}\)

or, \(\frac{2}{3} \frac{d[O_2]}{dt}\)  × (0.37 mol L⁻¹ s⁻¹) = \(\frac{d[CO_2]}{dt}\)

or, 0.2467 mol L⁻¹ s⁻¹ = \(\frac{d[CO_2]}{dt}\)

Thus, the rate of disappearance of O₂ is 0.37 mol L⁻¹ s⁻¹ , the rate of appearance of CO₂ is 0.2467 mol L⁻¹ s⁻¹

To know more about rate of reaction refer to:

https://brainly.com/question/24795637

#SPJ1

The distance between layers of the crystal is 584.5 pm.

The distance between layers of the crystal or the spacing of the crystals is crystal is calculated by applying Bragg's law.

2d sinθ = λm

d = λm / (2 sinθ )

where;

Substitute the given parameters and solve for  the distance between layers of the crystal.

d = λm / (2 sinθ )

d = (154 pm) / (2 sin7.57 )

d = 584.5 pm

Learn more about distance between crystals here: https://brainly.com/question/4598747

#SPJ1