why is there an energy rise when going from free metal ion to a spherical field

Answer:

So I searched it up and got, "They're created by the use of metal salts. ... Metal salts commonly used in firework displays include: strontium carbonate (red fireworks), calcium chloride (orange fireworks), sodium nitrate (yellow fireworks), barium chloride (green fireworks) and copper chloride (blue fireworks)."

WHY WAS I THINKING OF PAINT-

Explanation:

Have a great day though:)

When thorium-234 undergoes beta decay, the other product formed is protactinium-234.

Here's a step-by-step explanation:
1. Thorium-234 (Th-234) experiences beta decay.
2. During beta decay, a neutron in the nucleus is converted into a proton and an electron (beta particle) is emitted.
3. The atomic number (number of protons) increases by 1, while the mass number (total number of protons and neutrons) remains the same.
4. As a result, the new element formed is protactinium-234 (Pa-234), which has an atomic number of 91 (one more than thorium) and a mass number of 234.

Hence, when thorium-234 undergoes beta decay, the other product formed is protactinium-234

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False. Fog forms when the air near the Earth's surface becomes cooled and saturated with moisture, resulting in the condensation of water vapor into small droplets.

Fog is not a cloud that has a base at or near ground level. While both fog and clouds are composed of tiny water droplets suspended in the air, they differ in their formation and location.

Clouds are formed when moist air rises and cools, causing the water vapor to condense into visible water droplets or ice crystals. Clouds can occur at various altitudes in the atmosphere, ranging from low-level clouds near the Earth's surface to high-level clouds at greater heights.

On the other hand, fog forms when the air near the Earth's surface becomes cooled to the point where it cannot hold all the moisture it contains, leading to the condensation of water vapor into tiny water droplets. Fog typically occurs in specific atmospheric conditions, such as during cool nights or in areas with high humidity.

In conclusion, fog is not a cloud with a base at or near ground level. While clouds can occur at different altitudes in the atmosphere, fog forms when the air near the Earth's surface becomes cooled and saturated with moisture, resulting in the condensation of water vapor into small droplets.

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Answer:

Explanation:

The grams of SO₂ that would be dissolved in 100 g of 40 degree water to make a saturated solution can be calculated by making solubility curve.

Mass is the quantity of matter of a physical body.

If you want to calculate the mass of Sulfur dioxide in 100 g of 40 degree, you have to make a solution curve.

With the increase in temperature, the solubility increases as well

Thus, the grams of SO₂ that would be dissolved in 100 g of 40 degree water to make a saturated solution can be calculated by making a solubility curve.

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The Mass of 22.4 L or 1 mole of H2 gas is 2.02 grams

The molar volume of a gas at STP is equal to 22.4 L

This means that 1 mole of the gas occupies a volume of 22.4 L

Thus, 22.4 L of H2 gas equals one mole of H2 gas.

Mass of 1 mole of H2 gas = 2.02 grams

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Answer:

The Mass of 22.4 L or 1 mole of H2 gas is 2.02 grams

Explanation:

The solubility of gases changes to temperature when the gaseous vapor is cooled to a liquid state, but it can also occur when a gaseous vapor is compressed into a liquid or undergoes a combination of cooling and compression

Temperature is a quantitative measure of temperature, hot or cold, and is measured using a thermometer. Temperature is a quantity that will express the degree of coldness and heat of an object. Besides being able to be expressed qualitatively, the temperature can also be expressed quantitatively to certain degrees.

Condensation is the change of water vapor or gas into a liquid at an air temperature below the dew point. This process occurs when the solubility of a gas changes to temperature when the gas vapor is cooled and becomes a liquid, it also occurs when a gas vapor is compressed into a liquid or undergoes a combination of cooling and compression.

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Answer:

Ground State

Explanation:

When an electron Jumps from a lower Energy level to a higher one, it is known to be in Excited state, and when it drops from an energy level of a higher state to a lower state, it is said to be at ground state

Hope This Makes Sense

The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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Taking into account the reaction stoichiometry and ideal gas law, the mass of NaCl that reacted with F₂ at 280 K, 15 L and 1.50 atm is 114.56 grams; and if you have the same volume of fluorine gas at STP, the mass of NaCl reacted is 78.323 grams.

In first place, the balanced reaction is:

F₂ + 2 NaCl  → Cl₂ + 2 NaF

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of gases:

P×V = n×R×T

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

You know for F₂:

Replacing in the definition of ideal gas law:

1.50 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 280 K

Solving:

(1.50 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 280 K)= n

0.979965 moles= n

Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.979965 moles of F₂ reacts with how much mass of NaCl?

mass of NaCl= (0.979965 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂

mass of NaCl= 114.56 grams

Finally, the mass of NaCl reacted is 114.56 grams.

In this case, you have the same volume of fluorine gas at STP:

Replacing in the definition of ideal gas law:

1 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 273 K

Solving:

(1 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 273 K)= n

0.67 moles= n

Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.67 moles of F₂ reacts with how much mass of NaCl?

mass of NaCl= (0.67 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂

mass of NaCl= 78.323 grams

Finally, the mass of NaCl reacted is 78.323 grams.

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Answer:

slope = 3

Explanation:

\(slope = \frac{3 - 0}{1 - 0} \\ = 3\)

Answer:

hope it helps you a little

The total pressure in the flask is determined by the ideal gas law which is 4.00 atm.

This law states that the pressure of a gas is equal to its number of moles times its temperature divided by its volume. For this question, we need to calculate the number of moles of each gas before the reaction.

Methane has a molar mass of 16.04 g/mol,

so 253 mL of methane would be 1.106 moles.

Chlorine has a molar mass of 35.45 g/mol,

so 891 mL of chlorine would be 2.587 moles.

Thus, the total number of moles in the flask is 3.693.

Next, we need to calculate the number of moles that have reacted. 72.5% of the reaction has been completed, so 0.725 moles of the 3.693 moles have reacted.

Finally, the total pressure in the flask is equal to the number of moles times the temperature divided by the volume. This gives a pressure of 4.00 atm.

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Answer:

2.coefficient how many molecules of Aluminum hydroxide there are

Answer:

Hydrocarbons are the chemical compound that contain the elements carbon and hydrogen only.

They are compounds that are obtained from the fossil fuel crude oil by a process called fractional distillation.

The wavelength of the emitted photon is approximately 2.44 μm.

The wavelength of the emitted photon can be determined using the Rydberg formula as follow

\(\frac{1}{\lambda}=R_H\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)\)

where: lambda is the wavelength of the emitted photon,

\(R_H=1.0974\times10^7\text{m}^{-1} ,$n_1=19 n_2=5 :\frac{1}\)

\({\lambda}=R_H\left(\frac{1}{19^2}-\frac{1}{5^2}\right) \frac{1}\\\\\\{lambda}=1.0974\times10^7\text{m}^{-1}\left(\frac{1}{361}-\frac{1}{25}\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\left(0.002709-0.04\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\times(-0.037291) \frac{1}{\lambda}=-409446.34\text{m}^{-1} \lambda=-\frac{1}{409446.34\text{m}^{-1}}=2.44\times10^{-6}\text{m}\)

Therefore, the wavelength of the emitted photon is approximately 2.44 μm.

Rounded to two decimal places, this value is equal to 2.45 μm. Thus, the correct option is A) 2.45μm.

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Answer:

I believe it is C.

Explanation:

Everything else is true.

Electromagnetic waves do not need an medium to travel though.

Answer:

C

Explanation:

EM waves need a medium mechanical waves don't

The difference between polyatomic ions and a compound is that polyatomic ions have positive or negative charge, while compounds have no net electrical charge.

The eight isomeric alcohols with the formula  C₅H₁₂O are: Pentan-1-ol, Pentan-2-ol, 2-Methylbutan-1-ol, 2-Methylbutan-2-ol, 3-Methylbutan-1-ol, 3-Methylbutan-2-ol, 2,2-Dimethylpropanol (or neopentyl alcohol), 3,3-Dimethylbutan-1-ol (or tert-amyl alcohol)

To determine if an isomer is chiral, we need to look at its stereochemistry. An alcohol is chiral if it has a chiral carbon atom, which is a carbon atom bonded to four different groups.

From the list above, we can see that pentan-1-ol, 2-methylbutan-1-ol, 3-methylbutan-1-ol, and 3,3-dimethylbutan-1-ol all have a chiral carbon atom and are therefore chiral.

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Answer:

51

Explanation:

Range= the difference between highest number and lowest number in a data set. For this, range =62-11 = 51

hope this helps

Answer:

2.016E24 same as 2.016 × 10^24

Explanation:

we have to use 2 conversion facts

22.4 and 6.02E23

1. Convert to moles of NH3 from liters of NH3

75.0 ÷ 22.4 = 3.348 moles of NH3

2. Convert to molecules of NH3 from moles of NH3

3.348 × 6.02E23 = 2.016E24 molecules of NH3

please let me know if i need to further eloborate :)

A chemical change always involves a change in the composition or chemical makeup of a piece of matter.

In a chemical change, the substances involved undergo a transformation at the molecular level, resulting in the formation of new substances with different chemical properties. This transformation involves the breaking and forming of chemical bonds between atoms, leading to a rearrangement of their arrangement and the creation of new chemical compounds.

During a chemical change, the original substances, called reactants, are converted into new substances, known as products. This change in composition is a fundamental characteristic of chemical reactions. The properties of the reactants, such as their color, odor, and physical state, may be different from those of the products.

Chemical changes can occur through various processes, such as combustion, oxidation, decomposition, and synthesis reactions. These reactions involve the interaction of atoms, ions, or molecules, leading to the formation of new substances with distinct chemical identities and properties.

Unlike physical changes, such as changes in state or shape, which do not alter the chemical nature of the matter, chemical changes involve the breaking and forming of chemical bonds, resulting in a significant transformation in the composition and structure of the matter.

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Answer:

Hot fluids are formed mainly of water and dissolved minerals. They can seep through rocks and chemically react with the minerals in the rocks potentially changing the composition of the rock. Metamorphic rocks can form from other metamorphic rocks.

Answer:

Hot fluids are formed mainly of water and dissolved minerals. They can seep through rocks and chemically react with the minerals in the rocks potentially changing the composition of the rock. Metamorphic rocks can form from other metamorphic rocks.

Explanation:

Answer

5.6 L

Explanation:

whatever you start with, you end with the same amount.

(LAW OF CONSERVATION)

The amount of oxygen and gasoline that can be produced is 5.6 liters

The question above is answered with the law of conversation of mass. This law of conversation of mass states that  no form of energy can be destroyed, instead it is changed from one form to another type of form.

In this law, it is expected that you end with the same amount you started with. According to the question above, since the amount that you started  with is 5.6 liters then you will end with 5.6 liters also.

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Answer:

Gain energy as a liquid changes to a gas

Explanation:

get further apart= more kinetic energy

liquid at beginning as not uniform but quite close together and takes shape of container

The answer is...Liquid into gas.

My Explanation:

Stated in the model, The atoms aren't that active but can still slider past each other; meaning, this is a liquid. As it shifts into a gas, which is when atoms pick up energy and move around more freely/actively, the definition of the following is "Vaporization".

So the answer is: B, or in other words, "Atoms gain energy as a liquid turns into a gas.

Tactics are similar to those of ecoterrorists. This best describes the campaign. Therefore, the correct option is option B.

Natural Resources Defence Council, and others once engaged in a campaign against Kimberly-Clark known as campaigns. From 2004 to 2009, it took place. The largest producer of tissue products in the world, Kimberly-Clark is well known for its Kleenex brand.

Every year, the company buys from logging companies more than three million kilogrammes (3.4 million tonnes) of fibre. According to the marketing campaign, this fibre is made with old growth forest wood pulp. Tactics are similar to those of eco. This best describes the Kleercut campaign.

Therefore, the correct option is option B.

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Answer:

1. whales  are mammals and fish are not

2. Fish have gills which extract oxygen from the water and thus allow it to live underwater its entire life. Whales on the other hand do not have gills but instead have one or two blowholes

3. whales provide milk to their young and fish do not!

Explanation:

ANSWER:

4 a) Specific elements have more than one oxidation state, demonstrating variable valency.

For example, the following transition metals demonstrate varied valence states: \(Fe^{2+}\), \(Fe^{3+}\), \(Cr^{2+}, Cr^{3+}\), etc.

Normal metals such as \(Pb^{2+} and Pb^{4+}\) also show variable valencies. Certain non-metals are also found to show more than one valence state \(Pb^{3+} and Pb^{5+}.\)

4 b) Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons.

For example, Carbon-14 is a naturally occurring radioactive isotope of carbon, having six protons and eight neutrons in the nucleus. However, C-14 does not last forever and there will come a time when it loses its extra neutrons and becomes Carbon-12.

5 a) \(2Fe + 3Cl_2\) → \(2FeCl_3\)    

5 b) \(3Pb + 8HNO_3\) → \(3Pb (NO_3)_2 + 4H_2O + 2NO_2\)

5 c) \(Zn + H_2SO_4\) → \(ZnSO_4 + H_2\)   (already balanced so don't need to change)

5 d) \(2H_2 + O_2\) → \(2H_2O\)

5 e) \(2Mg + 2HCl\) → \(2MgCl + H_2\)

EXPLANATION (IF NEEDED):

1. Write out how many atoms of each element is on the left (reactant side) and right (product side) of the arrow.

2. Start multiplying each side accordingly to try to get atoms of the elements on both sides equal.

EXAMPLE OF BALANCING:

It causes freezing point depression which requires the gasoline to reach a much lower temperature before freezing. Hence, option C is correct.

Whenever a solute is added to a solution/solvent, it leads to depression in the freezing point of that solution/solvent. Depression in the freezing point of a solution on the addition of a solute is a colligative property.

A colligative property is a physical property which depends upon the number of solutes added not on the nature of solutes which means it does not matter whether we are adding 1000 particles of sugar or salt in water, the depression in the freezing point will occur by the same °C. Also, the more a solute is added the more will be the depression at the freezing point.

The formula for depression at the freezing point is mentioned as under:

             Δ T = K x m

where Δ T = freezing point depression;

                 K = cryoscopic constant;

                 m = molality of the solution.

For example, The freezing point of water is 0 °C but as soon as we add a 92 gm solute like NaCl (common salt) in 1000 gm of water, its freezing point will be lower to −3.72 °C.

Hence, option C is correct.

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