Which of the following elements produces ions in solution with color?

The atomic symbol for the nuclide that decays by alpha emission to form lead-208 (Pb-208) is thorium-232 (Th-232)

Thorium-232 is a radioactive isotope that undergoes alpha decay, which involves the emission of an alpha particle consisting of two protons and two neutrons. Through alpha decay, thorium-232 loses an alpha particle and transforms into a different nuclide. In this case, the decay of thorium-232 leads to the formation of lead-208.

The atomic symbol for lead is Pb, and the number 208 represents the atomic mass of lead-208, which indicates the sum of protons and neutrons in the nucleus. Therefore, the atomic symbol for the nuclide undergoing alpha decay to form lead-208 is thorium-232 (Th-232).

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The components have very precise measurements to ensure that the cleaning agent has the right properties which means it is an example of a homogeneous mixture.

A mixture is referred to as a substance which comprises of two or more different chemical substances which are not chemically bonded and are of two types which are:

The homogeneous mixture is a type of mixture in which there is the same or uniform proportions of its components in the sample while heterogeneous mixture doesn't have a uniform proportion.

In this scenario, we were told that the components have very precise measurements with the right properties which depicts a homogeneous mixture and is the correct choice.

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Answer:

It would be false.

Explanation:

Mixtures are basically their own substance or whatever, they basically stay the same.

37 percent is the increase in percentage.

The air bubbles locked in ice sheets as well as glaciers over Earth's previous three glacial cycles are used in the second graph to depict carbon dioxide (CO2) levels during those periods. Human activities had boosted atmospheric CO2 approximately 50% since the start of the industrial era (in the 18th and 19th centuries), bringing it to 150% of it's own value in 1750.

Actually 282 ppm means 282 gm of CO2 is in 1 million gm of air similarly 382 ppm means 387 gm is in 1 million gm of air . Increase in mass of CO2 387-282 = 105 gm .

So percentage increase= (105× 100)÷282= 37%

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Based on the assertion and the reason regarding the weight of an object and upthrust experienced by the body in a fluid; Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

The correct option is A.

The principle of floatation states that an object will float in a fluid if the upthrust that is experienced by the object is equal to or greater than the weight of the object.

The upthrust experienced by a body is the upward force that a liquid or gas exerts on a body floating in it.

Upthrust on a body depends on the acceleration due to gravity, the density of the liquid, and the volume of the body immersed in the liquid.

The weight of a body is the force of gravity acting on the body. The weight of a body acts downward.

Thus in a fluid, the weight of an object acts downward while the upthrust on the object acts in an upward direction.

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Answer:  Sufficient volume of air is present in lump of cotton wool. then dipped in water, this air goes out due to which the cotton lump shrunk.

yes

Answer:

the number of moles in a substance.

Explanation:

To find the number of moles at stp, you use the formula volume divided by 22.4 L/mol.

Answer:

diffusion

Explanation:

Diffusion can be defined as the net movement of particles from a high concentration to a low concentration. This sounds like the most plausible word in this case.

Super saturated solution is a term used to describe a solution that contains more solute than the saturated solution at a particular temperature.

Your solution is referred to as unsaturated if you can continue to add solute while it still dissolves. Your solution is saturated when it can no longer dissolve any more solute at a particular temperature.

A solution that, under the same circumstances, contains more dissolved solute than a saturated solution is said to be supersaturated. The link between temperature and a substance's solubility is displayed by a solubility curve.

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Answer:

Quantitative data refers to any information that can be quantified, counted or measured, and given a numerical value. Qualitative data is descriptive in nature, expressed in terms of language rather than numerical values

Explanation:

:)

Explanation:

5) Uranium-234

Symbol- 234U

Names - uranium-234, U-234, Uranium II ( hist )

Protons (Z) - 92

Neutrons (N) - 142

Uranium-235

Symbol - 235U

Names - uranium-235, U-235

Protons (Z) - 92

Neutrons (N)- 143

Uranium-238

Symbol - 238U

Names - uranium-238, U-238

Protons (Z) - 92

Neutrons (N) - 146

Answer: 30 moles

Explanation:

2C6H6 + 1502 -------> 12CO2 + 6H2O from reaction  

 2 mol   15 molgiven    4.0 mol

x molx = 4.0*15/2 = 30. mol

For all the reactions listed, the moles of products and limiting reactants are;

1. Molar cofficient - 6, oxygen is the limiting reactant

2. Molar coefficient - 8 chlorine is the limiting reactant

3. Molar coefficient - 4 and CO2 is the limiting reactant

A chemical reaction is a combination of reactants that yields products. Recall that the limiting reactant is the reactant that nis present in the least amount.

Let us now complete each reaction;

1. The molar coefficient of the product in reaction 1 is 6 and oxygen is the limiting reactant

2. The molar For all the reactions listed coefficent of the product in reaction 2 is 8 and chlorine is the limiting reactant

3. The molar coefficient of the product in reaction 3 is 4 and the limiting reactant is CO2.

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The Roman numeral in the manganese (IV) sulfide indicates : the positive charge on the manganese ion. The correct option is B.

The Manganese (IV) sulfide, chemical formula = Mn₂S₄ In the compound Manganese (IV) sulfide, the manganese (IV) contains the positively charged cation and the sulfide contains the negatively charged anion. The name of the manganese (IV) sulfide is that each of the manganese atom has the charge of +4.

Manganese = Mn⁴⁺

Sulfide = S²⁻

The chemical formula for the Manganese (IV) sulfide = Mn₂S₄. The  Roman numeral in manganese (IV) sulfide shows the positive charge on the manganese ion.

Therefore, the correct option is B.

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Answer:

electrons

Explanation:

The red dot in the center is the nucleus and it has protons and neutrons.

Since it has 12 electrons this means (if it is a neutral atom and not an ion) it will have 12 protons which makes it a magnesium atom.

According to the structure of atom, electrons are represented by crosses in orbits.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:  The frying pan is made up of metals like aluminium or stainless steel as these metals are good conductor of heat.

Answer:

b. they are good conductors of heat

Explanation:

study island

To produce electrons with higher kinetic energy per electron, the experimenter should increase the intensity and the wavelength of the light.  In order to decrease the energy of each photon we need less frequency (ν) which means increased wavelength (λ) for the incoming light. The intensity has to be increased since it is directly proportional to the number of photoelectrons emitted.

The energy of a particular photon can be calculated using Planck's equation:

E = hν

Here, E = Energy of a photon in joules (J)

h = Planck's constant (6.626×10⁻³⁴J⋅s)

ν = Frequency of light (Hz)

The photoelectric effect is a phenomena whereby electrons can be released from the surface of a metal when light strikes upon it. The electrons that are released from the metal are known as photoelectrons, and this process is also frequently called photoemission. The Kinetic energy (KE) of each photoelectron is given by KE = hν – Φ.

E (i.e, the total energy of the incoming photon) must be equal to the KE (i.e, the kinetic energy of the ejected electron) plus the energy required to eject the electron from the metal which is also called the work function (Φ).

E = KE + Φ

The value of Φ also changes depending on the metal. Writing the energy of the photon in terms of Planck's equation we get:

E = hν = KE + Φ

By rearranging this equation in terms of the kinetic energy of electrons, we get:

KE = hν – Φ

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Answer:

36 electrons

Explanation:

But Bromine anion with a charge of -1 has one extra electron so 35 +1 = 36 electrons.

Answer:

physical

Explanation:

no chemical reaction is happening

Answer: The element is sulfur and the atomic mass is 32.07

Explanation: wasn’t sure what you were asking so gave you both

The new volume of the gas at 26.8°C and 742 mmHg is approximately 4.28 L.

To find the new volume of the gas at the given temperature and pressure, we can use the combined gas law formula:

P1 × V1 / T1 = P2 × V2 / T2

where P1 is the initial pressure, V1 is the initial volume, T1 is the initial temperature in Kelvin, P2 is the final pressure, T2 is the final temperature in Kelvin, and V2 is the final volume.

Convert the temperatures to Kelvin.
T1 = 25.6°C + 273.15 = 298.75 K
T2 = 26.8°C + 273.15 = 299.95 K

Convert the pressures to atm.
P1 = 748 mmHg × (1 atm / 760 mmHg) = 0.98421 atm
P2 = 742 mmHg × (1 atm / 760 mmHg) = 0.97632 atm

Rearrange the combined gas law formula to solve for V2.
V2 = P1 × V1 × T2 / (T1 × P2)

Substitute the given values into the formula.
V2 = (0.98421 atm) × (4.25 L) × (299.95 K) / (298.75 K × 0.97632 atm)

Calculate the final volume, V2.
V2 ≈ 4.28 L

The volume of the gas at 26.8°C and 742 mmHg is approximately 4.28 L.

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Burning, 4800 cm3 of sulfur dioxide in air produces 4.8L of sulfur trioxide. Three varieties of sulfur trioxide can be discovered.

Sulfur trioxide is the chemical compound with the SO formula. "Unquestionably, the much more commercially significant" sulfur oxide has been said to exist. It is produced in enormous quantities as a precursor to sulfuric acid.

2SO₂ + O₂ →  2SO₃

The limiting reactant

Molar ratio between SO₂ and SO₃ which is 2:2.

1000cm³ = 1L

4800cm³ × 1L/1000cm³

= 4.8L

Thus,  4.8L is the volume.

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The correct option is A. The attractions are dipole-dipole interactions, where the partial charges on the polar molecules attract each other.

a. ends of polar molecules to ends of other polar molecules

b. ends of polar molecules to - ends of other polar molecules

d. non-polar molecules to other non-polar molecules

e. non-polar molecules to parts of polar molecules

f. non-polar molecules to - parts of polar molecules

A polar molecule is a type of molecule that has a positive charge at one end and a negative charge at the other end. This occurs because the electrons in the molecule are not evenly distributed, resulting in a molecule with a separation of charges, known as a dipole.

The polarity of a molecule is determined by its geometry and the distribution of its electrons. In general, molecules with asymmetrical shapes or polar bonds tend to be polar, while symmetrical molecules or nonpolar bonds tend to be nonpolar. Polar molecules are important in various biological and chemical processes.

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Answer:

according to the law,the pressure would increase if volume has been decreased.

Explanation:

the reason is that,pressure and volume are inversely proportional,if volume has been decreased that means the pressure would increase because decreased volume would create a sort of compacted situation for particles either of a liquid or gas,decreasing volume would bring these particle together, closer to each other because of decreased  and since the volume has decreased they dont have enough space,they would end up getting closer to each other most likely to collide, which drastically increase pressure .

Answer:

1. LiCi is formed by the treatment of lithium carbonate with hydrochloric acid

2. A combination reaction (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product).  

3. Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments.

4. A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound

5. Double replacement reactions have two ionic compounds that are exchanging anions or cations.

6. The most electronegative elements are found on the top right of the periodic table.

7. cesium

8. Electronegativity describes the degree to which an atom attracts electrons in a chemical bond. But the electronegativity of two atoms would determine their bond type.

9. ionic bond

10. polar covalent bond

11. fluorine

12. Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change.

Hope i was able to help!!!

Answer:

4

Explanation: it's a carbon atom right....soo it'll form 4 bonds(single)

An atom can form 4 single covalent bonds is carbon with two electron shell.

The bonds are defined as a strong bond that binds atoms, ions, or molecules together and promotes the production of molecules.

There are three types of bonds.

Covalent bonds are defined as the bond formed by sharing of electrons with each other.

Covalent bonding is a stable equilibrium of the attractive and repulsive forces between two atoms that occurs when they share electrons. Bonding pairs or sharing pairs are other names for these electron pairs.

It can also be defined as a type of chemical link where atoms share electrons to create electron pairs.

Covalent bonds  has low melting point, boiling point, enthalpy of fusion and enthalpy of vaporization.

Thus, an atom can form 4 single covalent bonds is carbon with two electron shell.

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Plants or other photosynthetic organisms capture solar solar radiation and convert it to chemical energy at the first trophic level of such a food chain or web.

For electricity generation, the main three types of energy are fossil fuels coal, natural gas, & petroleum, nuclear energy, or renewable energy sources. The majority of electricity is produced by steam turbines powered by coal and oil, nuclear, bio fuels, geothermal, or rather solar thermal energy.

Energy is employed to power computer systems, transportation, communications, cutting-edge diagnostic supplies, and many other things. The need for dependable & affordable energy is now more pressing in developing countries. It has the potential to improve and potentially save lives.

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Answer:

I think it's D one. Because all others are wrong

Answer: They can combine with other elements to form atoms.

Explanation:

Answer:

yes its called as poop

Explanation:

Answer:

Sodium carbonate, Na2CO3, (also known as washing soda, soda ash and soda crystals) is the inorganic compound with the formula Na2CO3 and its various hydrates. All forms are white, water-soluble salts that yield moderately alkaline solutions in water.

Explanation:

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