if you measure the number of hydronium ions is 3.0x1012 , could you predict the solution to be acid, base, or neutral? explain your answer.

Answer:

in doesn't rust which sends meatel into the drink

Explanation:

u are welcome

One other fact that we can keep in mind as to why the advice proposed by the firefighter is correct is that hotter air rises, while cool air will sink.

The firefighter in question offered the advice to exit a burning building by remaining close to the floor. One additional benefit of this proposed method is to avoid the effects of the hot air when attempting to exit, which can be life-saving given the effects that increased heat may have on a person.

Heat can have a variety of negative effects on a person, which include:

and many other life-threatening conditions if the heat is extreme.

The benefit of staying close to the floor in order to avoid the heat may be very small in such extreme conditions, however, even a few degrees of difference can be enough to get out safely at times.

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Answer:

what do you need to know to decide whether this statement is correct?

Coal could not be considered as substitute products for industrial electricity generation as it is limited and non-renewable in nature.

Generally, coal is defined as a type of sedimentary deposit that is composed predominantly of carbon that is readily combustible. Coal is usually black or brownish-black in color and coal has a composition that which include inherent moisture and consists of more than 50 percent by weight and more than 70 percent by volume of coal contains carbonaceous material.

Coal is classified as a nonrenewable energy source because more than millions of years are required to form coal. The energy which are stored in coal is formed by plants that lived hundreds of millions of years ago in dense and swampy forests.

Hence, Coal could not be considered as substitute products for industrial electricity generation as it is limited and non-renewable.

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Without having access to the specific graph you are referring to, I cannot definitively determine which gas is plotted using the y-axis on the right. However, the gases you mentioned are methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O). It is possible that the graph shows the total of all three gases as well. Please refer to the graph's labels or legend for clarification on which gas is plotted on the right y-axis.

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Answer:In chemistry, an oxidizing agent (oxidant, oxidizer), or oxidising agent (oxidiser) is a substance that has the ability to oxidize other substances — in other words to accept their electrons.

Explanation:

The phrase which describes an oxidizing agent is the substance that is reduced because it gains electrons. Thus option D is correct.

An oxidizing agent is defined as a chemical spices that tends to oxidize other substances that is causes increase in the oxidation state of the substance by making it lose electrons and the oxidizing agent itself gains electrons.

It can be defined as a substance that causes oxidation by being reduced and gaining electrons.

Any substance that oxidizes another substance is referred to as an oxidizer.

Oxidizing agents can be defined as an electron acceptor agents or as an electron transferring substance.

Thus, the phrase which describes an oxidizing agent is the substance that is reduced because it gains electrons. Thus option D is correct.

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Your question is incomplete, but probably your complete question was

Which describes the oxidizing agent in a chemical reaction?

A. the substance that is oxidized because it loses electrons

B. the substance that is reduced because it loses electrons

C. the substance that is oxidized because it gains electrons

D. the substance that is reduced because it gains electrons

The pressure exerted by a mixture of non-reacting gases is equal to the sum of their partial pressure, according to Dalton's Law of Partial Pressure.

Total Pressure is equal to P(1) + P(2) + P(3) +. ——— (1) Data provided

Nitrogen partial pressure is P(1) = 587 mmHg.

Oxygen partial pressure = P(2) = 158 mmHg

Argon's partial pressure is P(3) = 7.00 mmHg.

Adding these values to equation 1.

Total Pressure is equal to 587 mmHg, 158 mmHg, and 7 mmHg.

Pressure overall is 752 mmHg.

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Answer:

Proteins consist of a chain of some combination of 20 unique amino acids.

Explanation:

Proteins consist of a chain of some combination of 20 unique amino acids. These amino acids are the building blocks of proteins and are connected together through peptide bonds. The specific sequence and arrangement of amino acids in a protein chain determine its structure and function. Each amino acid has a unique side chain, which gives it distinct chemical properties. The variety of amino acids and their different properties allow for the immense diversity and complexity of proteins, enabling them to carry out a wide range of biological functions in living organisms.

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Answer:

When plants lose more water than they can take up from the soil, they become water stressed. ... Such drought conditions certainly inhibit the growth of plants. If it goes long enough without water it will die because the plant uses water for a lot of different jobs needed to keep the plant alive, so the long-term effect is that the plant will die if the drought continues.

Explanation:

The Arizona poppy is the summer herb of deserts of southwestern US and has pinnately compound leaves and large snowy flowers. This poppy appears in rainy seasons.  

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Answer

Because carbonic acid is a weak acid.

A weak acid is only partially ionized in a solution.in other words,a weak acid doesn't completely dissociate or break apart into ions in a solution.

Mark the rule

Carbonic acids contain C means it is too weak .

So it can't form acidic salts

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of options. However, Rutherford's model of an atom highlighted the following (which you can use to determine your answer from the missing options)

1) electrons move in fixed circular part (now referred to as electron shells) around a central positively charged nucleus

2) The size of the nucleus is very small relative to the size of the atom

Answer: Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, and the Antarctic Circle.  Hope this helps.

                                                      ................................................

Answer: out layer

Explanation: the fossils were found on the out layer

Answer:

44.1g/cm3

Explanation:

d=m/v

=441/10

=44.1 g/cm3

The standard enthalpy of formation is the enthalpy of the reaction that creates a molecule from its raw elements at standard state. The correct answer is (A).

The standard enthalpy of formation is the enthalpy change that occurs when one mole of a compound is formed from its constituent elements in their standard states at a specified temperature and pressure. It is a measure of the thermodynamic stability of the compound and is usually expressed in units of kilojoules per mole.

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Answer:

The specific heat of the sample unknown metal is approximately 0.45 J/g °C.

General Formulas and Concepts:
Thermodynamics

Specific Heat Formula: \(\displaystyle q = mc \triangle T\)

Explanation:

Step 1: Define

Identify variables.

m = 112 g

ΔT = 20.0 °C

q = 1004 J

Step 2: Solve for c

∴ specific heat capacity c is equal to around 0.45 J/g °C.

---

Topic: AP Chemistry

Unit: Thermodynamics

The correct answer is option B, which is 4 paired and 2 unpaired electrons are there in the phosphorus lewis symbol.

The electron configuration of phosphorus is 1s2 2s2 2p6 3s2 3p3. The valence shell of phosphorus contains 5 electrons, out of which 3 electrons participate in bond formation, and the other two electrons remain as non-bonding electrons.

In Lewis symbols, the dots denote the valence electrons that are involved in bonding. So, the Lewis symbol of phosphorus is shown below:There are four dots in the Lewis symbol, which represents the paired electrons involved in forming three covalent bonds with three chlorine atoms.

There are two unpaired electrons represented by the dots, which are not involved in bonding.In summary, the Lewis symbol of phosphorus contains four paired electrons and two unpaired electrons. Therefore, the correct option is B) 4, 2.

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Answer:

Liquid A

Explanation:

the least dense will be at the top. like icecubes in water. the ice is less dense than the water so it floats

Answer:

Liquied A

Explanation:

It is at the top and it is the lightest if it is at the bottom then it has the most density

The Haworth projection of ethyl β-D-mannopyranoside shows the cyclic structure of the molecule in a 2D representation. The projection is drawn with a hexagon that represents the pyranose ring formed by the six carbon atoms in the mannose molecule.

The oxygen atom in the ring is represented by a point at the top of the ring, and the substituents on the ring are positioned either above or below the ring. In this case, the ethyl group is positioned above the ring, and the hydroxyl group on carbon 5 is positioned below the ring. The β-configuration indicates that the anomeric hydroxyl group on carbon 1 is in the same direction as the\(-CH_2OH\)group on carbon 5.

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If you lower the activation energy of a substance, it’s reaction rate will increase. Activation energy is the minimum energy required for a chemical reaction to occur. This means that in order for a reaction to take place, the reactants must have enough energy to overcome the energy barrier between them.

However, if the activation energy is lowered, then less energy is required to initiate the reaction, which means that the reaction rate will increase. This is because the reactants will have enough energy to overcome the energy barrier and form the products more quickly.

There are different ways to lower the activation energy of a substance. One way is to increase the temperature, which provides more kinetic energy to the reactants and allows them to overcome the energy barrier more easily. Another way is to use a catalyst, which is a substance that lowers the activation energy without being consumed in the reaction. Catalysts work by providing an alternative pathway for the reaction that requires less energy.

In summary, lowering the activation energy of a substance will increase the reaction rate by making it easier for the reactants to form the products. This can be achieved through methods such as increasing the temperature or using a catalyst.

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Answer:

The transition with the greatest distance is 5p → 1s, which is n = 5 going to n = 1. This means this transition also has the largest energy and frequency. Therefore, the electron transition that produces light of the highest frequency in the hydrogen atom is a. 5p → 1s.

Explanation:

The energy requirement order for excitation for different transitions is as follows. n→∏* transition requires lowest energy while σ→σ* requires highest amount of energy

Answer:

I'm on the same question as you

The form of water that would have physicochemical properties most different from those of bulk water is "chemically bound water." The correct answer is b.

Explanation:

Water is present in food products in various forms. The different forms of water include bulk water, physically bound water, chemically bound water, and capillary water. Bulk water refers to the water present in the spaces between food components.

Physically bound water refers to the water that is held in foods by weak physical forces such as hydrogen bonds, while capillary water is water that is present in small pores and is held by surface tension forces. The form of water that has the most different physicochemical properties from bulk water is chemically bound water.

Chemically bound water is water that is bound to the food matrix through chemical bonds such as covalent, ionic, or hydrogen bonds. It has physicochemical properties that are different from those of bulk water due to its strong bonding with the food matrix. For instance, it has a higher melting point, boiling point, and density than bulk water.

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Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.

Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.

They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.

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The correct answer is option c) 6. The compound NO2 contains 6 carbon atoms, each of which will produce a signal in the 13C NMR spectrum. Therefore, 6 signals will be observed in the 13C NMR spectrum of the compound NO2.

It is important to note that the number of signals observed in the 13C NMR spectrum is equal to the number of unique carbon environments in the compound. In the case of NO2, all of the carbon atoms are in the same environment and therefore will produce the same signal.

1. Determine the number of carbon atoms in the compound.
2. Identify the number of unique carbon environments in the compound.
3. The number of signals observed in the 13C NMR spectrum will be equal to the number of unique carbon environments.

In the case of NO2:
1. There are 6 carbon atoms in the compound.
2. All of the carbon atoms are in the same environment.
3. Therefore, 6 signals will be observed in the 13C NMR spectrum of the compound.

Hence, the correct answer is option c) 6.

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Answer:

Noble gases already have a full outer shell, so they do no take part in chemical reactions.

The preparation of lead (ii) sulphate from lead (ii) carbonate occurs in two steps:

Lead (ii) carbonate and  lead (ii) sulphate are both insoluble salts of lead.

In order to prepare lead (ii) sulphate, a two step process is performed.

In the first step, Lead (ii) carbonate is reacted with dilute trioxonitrate (v) acid to produce lead (ii) nitrate.

In the second step, dilute sulfuric acid is reacted with the lead (ii) nitrate to produce insoluble lead (ii) sulphate which is filtered and dried.

In conclusion, lead (ii) sulphate is prepared in two steps.

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Answer:

3.15×18

56.7

................