Recall that the color of neon lights is dependent on the type of gas that is in
the sign. Helium gas produces yellow light, neon gas produces red light, and argon gas
produces blue light. Explain what is happening to the electrons of the gas atoms in these
signs and why each gas produces different light. Which electrons have the most energy?

Answer:

Riding a bike or walking instead of driving.

Reduce the number of trips you take in your car.

Avoid using gas-powered lawn and garden equipment.

Buying fewer things that are manufactured using fossil fuels.

Explanation:

hope this helps XD

Answer: __2__ H\(_2\) + __1__ O\(_2\) >>>> __2__ H\(_2\)O

Explanation:

    To balance this equation, we must be sure that the amount of H [hydrogen] and O [oxygen] is the same on both sides. I will be using, and showing, a method my teacher showed me to help us solve.

        First, we will write out what we have:

_____ H\(_2\) + _____ O\(_2\) >>>> _____ H\(_2\)O

H 2                               >>>>      H 2

O 2                               >>>>      O 1

        Then, we see that the O [oxygen] is unbalanced. We will use a coefficient of 2 to balance them. Then, we will multiply this through and see what we now have on the right side, the product.

_____ H\(_2\) + _____ O\(_2\) >>>> __2__ H\(_2\)O

H 2                               >>>>      H  4

O 2                               >>>>      O 2

        Next, now we see the H [hydrogen] is unbalanced. We will use a coefficient of 2 to balance them. Again, we will multiply it through to see what we have on the left side, the reactants.

        After this, the equation is balanced and we have our answer.

__2__ H\(_2\) + __1__ O\(_2\) >>>> __2__ H\(_2\)O

H   4                            >>>>      H  4

O 2                              >>>>      O 2

Answer:

K I will attempt

Explanation:

a)

\(O_2_{(g)}+ 2H_2_{(g)} => 2H_2O_{(l)}\\\)

b)

1 : 2 : 2 (I don't know if this is what the question wants but it is what I would answer)

c)

Hydrogen because it requires 2 moles of H2 to react with 1 mole of O2

d)

24 moles of water. Look at stoichiometric coefficient. 2:2 means 24 moles you get 24 moles

e)

Oxygen. 2 < 5/2. Remember, 1 mole of O2 requires 2 moles of H2. But 5/2 is still greater than 2

f)

First, let's find out how many moles of water we can get. Since O2 is the limiting reactant, and O2:H2O ratio is 1:2, we will get 4 moles of H2O. Then, we can multiply 4 by Avogadro's number which is \(6.022*10^{23}\) to get the number of molecules. We get: 2.41 * 10^24 molecules of water.

Answer:

I'ma just take the point thank you very much

Answer: 1.45M

Explanation:

The definition of molarity is moles/liter.  The neutralization of NaOH with HI is:

HI + NaOH = NaI  + H2O

One mole of HI reacts with 1 mole of NaOH.  We'll assume this is a titration reaction and that the 10.00ml sample of NaOH contains the same number of moles as the 56.75ml of 0.256M HI.

Moles HI:  (0.256 moles/liter)*(0.05675 L) = 0.01453 moles HI

That means we muct have 0.01453 moles NaOH in 10.0ml of NaOH solution.

(0.01453 moles NaOH)/(0.010L) = 1.45 M

==

Another approach is to use the relationship M1V1 = M2V2, which is useful for titrations (M is concentration and V is volume):

We want M2, so rearrange:  M2 = M1V1/V2

M2 = (0.256M)*(56.75ml)/(10.0ml)

M2 = 1.45M

The information provided can be used to calculate the molecular weight of XeFn. Because the sample weighs 0.330 g, the molecular weight of XeFn is calculated as 0.330 g/8.11 x 1020 molecules = 4.08 x 10-22 g/molecule.

This may be used to compute n's value. The chemical formula of XeFn is XeFn, with Xe having an atomic weight of 131.29 g/mol and F having an atomic weight of 18.99 g/mol. XeFn has a molecular weight of (131.29 + 18.99n) g/mol. We get 4.08 10-22 = (131.29 + 18.99n) g/mol by substituting the molecular weight of XeFn with the stated weight of the sample.

When we solve for n, we obtain n = 6. This signifies that the xenon fluoride sample includes XeF6 molecules.

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The balanced chemical equation of a bimolecular elementary reaction that would complete the proposed mechanism.

2NO(g) + O₂(g) ---------> 2NO₂(g).

Chemical equations utilise symbols to describe variables such as reaction direction and the physical properties of the reacting entities. In 1615, the French chemist Jean Beguin developed the first chemical equations. Chemical equations can be used to illustrate chemical processes on paper, as seen below (for the reaction between hydrogen gas and oxygen gas to generate water).

For a nonelementary reaction, the reaction equation is described as the sum of all the steps involved. All these steps constitute the reaction mechanism. Each step in the mechanism is an elementary reaction. The rate law of the overall reaction involves the rate determining step (slowest step) in the reaction sequence.

Now look at the overall reaction 2NO(g) + O₂(g) ---------> 2NO₂(g)

The two steps in the mechanism are

2NO(g) --------->N₂O₂(g) (fast)

N₂O₂(g) +O₂(g) -------> 2NO₂(g) (slow)

Summing all the steps and cancelling out the intermediate N₂O₂(g), we obtain the reaction equation;

2NO(g) + O₂(g) ---------> 2NO₂(g)

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Complete  question:

The formation of iodine is described by the following chemical equation:

2NO(g) + O₂(g) ⇒ 2NO₂(g)

Suppose a two-step mechanism is proposed for this reaction, beginning with this elementary reaction:

2NO(g) ⇒ N₂O₂(g)

Suppose also that the second step of the mechanism should be bimolecular. Suggest a reasonable second step. That is, write the balanced chemical equation of a bimolecular elementary reaction that would complete the proposed mechanism.

Answer:

A precipate is formed as a result of double displacement reaction.

Explanation:

When two subsatances in solution react they yield a solid and an aqueos compound.

Answer:

Everyone, the answer is actually B. Providing shelter for marine organisms

Explanation:

We just went over this question in class, this is the right answer. Causing sediment to erode in the waters just doesn't make any sense.

The materials which are used to construct artificial reefs includes rocks, wood, old tires, etc. The artificial reef affect the ocean ecosystem by providing shelter for marine organisms. The correct option is B.

An artificial reef is defined as the manmade structure which may mimic some of the characteristics of the natural reef. The submerged shipwrecks are the most common form of artificial reef. The oil and gas platforms, bridges, etc. and other offshore structures are also function as artificial reefs.

From tourism to marine recreation and also for sport fishing, the reefs play an important role in local economies. They are also important for the health of the ocean and provides habitat for the variety of marine life and support the ocean ecosystems.

The artificial reefs are generally constructed to protect and enhance or restore the components of the marine ecosystems.

Thus the correct option is B.

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The deamination of:  amino acids in the soil produces ammonia. The correct option is a. Deamination is a process in which the amino group (-NH2) is removed from an amino acid, resulting in the formation of ammonia (NH3).

Amino acids are organic compounds that contain an amino group and a carboxyl group (-COOH). In the soil, organic matter such as decaying plant and animal material can contain amino acids. Through microbial activity, certain microorganisms can perform deamination, breaking down the amino acids and releasing ammonia as a byproduct.

This process contributes to the nitrogen cycle in the soil, making ammonia available for plants to utilize as a nutrient. Option b, acetic acid, is not directly involved in the production of ammonia through deamination. Acetic acid is a weak acid commonly found in vinegar and other organic substances. Option c, hydrochloric acid, is an inorganic acid that does not undergo deamination. It is a strong acid and has different chemical properties compared to amino acids.

Therefore, the deamination of amino acids in the soil is responsible for the production of ammonia. The correct option is a.

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Answer:

Oobleck is a mixture of cornstarch & water, a substance that behaves like the Mantle.

Explanation:

One tube has a buffered solution + acid and the other tube has water + acid. To decide whether or not the solution is buffered, a simple pH test can be done. An acid-base indicator can be used to determine the pH of each solution.

A buffered solution is defined as a solution that can withstand minor changes in pH upon the addition of small amounts of an acid or base.

Consider the following steps:

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Answer:

B

Explanation:

The compound corresponds to a molecule AX4E where A is the Central atom, X are the other atoms present and E is the lone pair of electrons.

The shape of this molecule is based on a trigonal bipyramid since the molecule contains five electron domains.

Since there are four bond pairs and one lone pair, the molecular geometry is see-saw with equatorial bond angle <120° and axial bond angle <90°.

For AX4E (five electron pairs), the lone pair should occupy an equatorial position instead of an axial position since the equatorial position has two neighboring electron pairs that are positioned at about 90° apart from each other and two other neighboring electron pairs that are positioned at 120° from each other. The axial position has 3 neighboring electron pairs positioned at 90° from each other and another neighboring electron pair positioned at 120°. Hence the equatorial position experiences lesser repulsion compared to the axial position.

Hence in the structure pictured in the question, position B is a preferred position for the lone pair instead of position A.

Answer:  The answer is B. Plasma, Gas, Liquid.

In a solid, particles are tightly packed and lined up in a specific pattern, like little soldiers. In a liquid, particles are still close together but are not arranged in a specific pattern. In a gas, particles are far apart and move freely, and there is no specific arrangement or pattern. In a plasma, particles are highly ionized and do not have a specific arrangement or pattern either. Therefore, the states of matter that contain particles that are not tightly packed and lined up like little soldiers are plasma, gas, and liquid.

Explanation:

When any chemical equation is not balanced then that is known as skeletal chemical equation. We need to balance it because as we know that mass can neither be created nor be distroyed and also the number of atoms on the reactant side should always be equal to the compounds on the product side .

Answer:

The principle of superposition states that the oldest rock units are at rock bottom , and therefore the youngest are at the highest . Based on this, layer C is oldest, followed by B and A. So the full sequence of events is as follows: Layer C formed.

Explanation:

Answer:

the lowest one

the same way when you are stacking plates the oldest one is at the bottom and the most recently stacked one is at the top

Explanation:

humus, topsoil, subsoil, parent rock

Answer:

either 1. organic, topsoil, subsoil, parent rock, bedrock or the opposite, 2. bedrock, parent rock, subsoil, topsoil, organic.

Explanation:

I study. :) Good luck!

Answer:

1.09 centimeters

Explanation:

Hope this helps!

Subtracting 7.11 cm from 8.2 cm results in 1.09 cm. 8.2 cm - 7.11 cm = 1.09 cm.

To subtract 7.11 cm from 8.2 cm, simply need to subtract the numerical values.

Subtraction is an arithmetic operation that involves finding the difference between two numbers. It is one of the basic mathematical operations and is often denoted by the symbol "-".

When subtracting, start with a minuend (the number are subtracted from) and subtract a subtrahend (the number being subtracted) from it. The result is called the difference.

The order of the numbers matters. When subtracting a smaller number from a larger number, the difference will be positive. However, if subtract a larger number from a smaller number, the difference will be negative.

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The complete question is:

Subtract 7.11 cm from 8.2 cm.

The pH at the equivalence point always equal to 7. False. the pH at the equivalence point is not always equal to 7. Based on your experimental observations. include a discussion of equivalence point ph values for strong versus weak acids. The pH value of the equivalence point for strong acids occurs at pH 7, while for weak acids the equivalence point is greater than 7

The equivalence point is the point that indicates when the added titrant reacts with the substance being titrated. The number of moles of acid or base needed to neutralize a basic or acidic solution must be equal. So it must be careful in determining the equivalence point, because the accuracy of the results of a titration will greatly depend on determining the equivalence point.

The equivalence point is always equal to 7 in strong acid or strong base titrations with the phenolphthalein indicator which is colorless in acidic solutions and pink in basic solutions. This reaction continues to completion and does not form a buffer or buffer solution at the end. Meanwhile, for weak acids, the pH at the equivalence point can be greater than 7. This happens because a weak acid produces a strong conjugate base during the titration.

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To measure the enthalpy of a given reaction and the reaction needs to be at atmospheric pressure so (C) coffee cup calorimetry is the best option.

A calorimeter that measures heat under constant pressure is called a coffee cup calorimeter. As a result, the heat detected by such a device is equal to the change in enthalpy. The use of a coffee cup calorimeter is typically reserved for the study of solution-based chemistry, which typically involves a reaction in which the volume is affected very little if any. So the best option is option (c) "coffee cup calorimetry" because the experiment is to be performed under atmospheric pressure which is constant.

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The formal charge on the C in  is 0.

In order to determine the formal charge on the carbon atom in , we need to consider the arrangement of electrons and bonds in the molecule. The Lewis structure for  is one carbon atom (C) bonded to two oxygen atoms (O). In the structure, there is a double bond between the carbon atom and one oxygen atom, while the other oxygen atom is bonded to the carbon atom by a single bond.

To calculate the formal charge on an atom, we use the formula: Formal Charge = Valence Electrons - Lone Pair Electrons - 0.5 * Bonding Electrons.

The carbon atom in  has four valence electrons. In the Lewis structure, the carbon atom is involved in two bonds and has no lone pair electrons. The carbon-oxygen double bond consists of four electrons (two bonding electrons and two lone pair electrons on the oxygen atom). The carbon-oxygen single bond consists of two electrons.

Plugging these values into the formula, we get: Formal Charge = 4 - 0 - 0.5 * (4 + 2) = 4 - 0 - 3 = 1.

Therefore, the formal charge on the carbon atom (C) in  is +1.

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The percent composition of lithium bromide is 91.9% bromine and 8.1% lithium.

This can be calculated by dividing the mass of each element in the compound by the total mass of the compound, and then multiplying by 100 to get the percent composition.

For bromine, the mass is 4.96 g and for lithium, the mass is 0.43 g.

Therefore, the percent composition of bromine is (4.96/5.39) x 100 = 91.9%, and the percent composition of lithium is (0.43/5.39) x 100 = 8.1%.

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Answer: There are many possibilities for atomic orbits.

Explanation: In chemistry orbits, or orbitals, are the areas that electrons move around the nucleus of an atom. Think like the solar system.

There are three levels of orbitals (p,d, and f).

That should get you started. Use p, d and d described in your book to find out how many orbitals an atom has.

Answer:

True

Explanation:

In general, metals are located on the left of the periodic table. Nonmetals are on the right. This means that they are on opposite sides.  So the answer is True.

Answer:

only 2.5% is fresh water on earth

Answer:

The answer is 3%

Explanation:

pH of a solution prepared by dissolving 0.150 mol acetic acid and 0.300 mol sodium acetate in water sufficient to yield 1.00L of solution is 5.0457.

What is acetic acid?

Acetic acid, also known as ethanoic acid, is an organic acid that is colorless, clear, and has a pungent odor. The carboxylic acid, which has a strong sour taste, is commonly utilized in the food sector.

What is Sodium Acetate?

Sodium acetate is a water-soluble, non-toxic white crystalline compound with the formula \(CH_3COO^-Na^+\). It is commonly used in the food, paper, and textile industries as a pH regulator, buffer, and emulsifier.

The pH of a solution made by combining 0.150 mol of acetic acid (\(CH_3COOH\)) and 0.300 mol of sodium acetate (\(CH_3COO^-Na^+\)) in water that yields 1.00L of solution can be calculated using the following formula:

pH= pKa + log(\(\frac{[salt]}{[acid]}\))

pH= -log(Ka) + log(\(\frac{[salt]}{[acid]}\))

pH= -log(\(1.8\times 10^{-5}\)) + log(\(\frac{0.300}{0.150}\))

pH= 5.0457

Therefore, pH of a solution prepared by dissolving 0.150 mol acetic acid and 0.300 mol sodium acetate in water sufficient to yield 1.00L of solution is 5.0457.

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The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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Answer:

160.3 g S

Explanation: