What is the concentration of nitrogen gas (N2), in parts per million, in a solution that contains 0.008 grams of nitrogen gas dissolved in 1,000 grams of water?

Answer:

A-Ideas

Explanation:

Answer:

the answer is b and c.

Explanation:

got it right on edge 2021

An example of a fission reaction is as follows:

²³⁹Pu₉₄ + n¹₀⇒¹⁴⁴Ce₅₈ + ⁹⁴Kr₃₆ + ¹n₀

²⁴¹Am₉₅ + ¹n₀ ⇒ ¹⁴⁴La₅₇ + ⁹⁵Sr₃₈ + ¹n₀

A fission reaction is a type of nuclear reaction in which the nucleus of an atom is split into two or more smaller nuclei, along with the release of a large amount of energy and several neutrons. This process occurs when the nucleus of an atom absorbs a neutron and becomes unstable, causing it to split apart.

Fission reactions can occur naturally, as in the decay of certain radioactive isotopes, or can be induced by bombarding a nucleus with high-energy particles.

Fission is also the process used in nuclear power plants to generate electricity, where the heat produced by the fission reaction is used to produce steam that drives turbines.

Thus, options B and C are correct.

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Answer:

If this is for the "functional groups" question:

1. aldehyde

2. ketone

3. ester

4. carboxylic acid

Explanation:

Got them all right on edge.

The drop-down menus to identify the names of the structures in the table to the right

1. Aldehyde

2. Ketone

3. Ester

4. Carboxylic acid

A functional group in organic chemistry is a pool of atoms within molecules which bind jointly to react in predicted ways.

Examples of functional groups contain the group hydroxyl, ketone, amine, and ether.

Thus, these are the drop down menus.

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The balloon has a capacity of 0.7 L after being heated to 250°C.

We utilize the Charles' Law equation to determine the system's ultimate volume. According to this rule, the volume of a gas under constant pressure is precisely proportional to its temperature.

Mathematically,

V1/T1 = V2/T2

where,

V1 and T1 are the gas's starting volume and temperature.

V2 and T2 are the gas's ultimate volume and temperature.

We receive:

V1 = 0.4L

T1 = 20.C = (20 + 273)K = 293K

V2=?

T2 = 250.C = (250 + 273)K + 523)K

Using the values in the equation above, we obtain:

0.4/293 = V2/523

V2 = 0.7L.

As a result, the balloon has a capacity of 0.7 L after being heated to 250°C.

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Answer:

The molarity of the solution is 0.29 [tex]\frac{moles}{liter}[/tex]

Explanation:

Molarity, or molar concentration, is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species. It is defined as the number of moles of solute that are dissolved in a given volume.

Molarity is calculated as the quotient between the number of moles of solutes and the volume of the solution:

[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case:

Replacing:

[tex]Molarity=\frac{2.1 moles}{7.3 liters}[/tex]

Molarity= 0.29 [tex]\frac{moles}{liter}[/tex]

The molarity of the solution is 0.29 [tex]\frac{moles}{liter}[/tex]

Answer:

M = 0.29 M

Explanation:

We are given;

Number of moles of NaCl; n = 2.1 moles

Total volume of solution; V = 7.3 L

Formula for molarity is;

M = n/L

Thus;

M = 2.1/7.3

M = 0.2878 M

Approximating to 2 decimal places gives;

M = 0.29 M

Nitrophenols should be in the following order: para - > ortho - > meta -. There is one additional resonance structure in ortho- and para-nitrophenol.

The stability of the conjugate base dictates the acidity of nitrophenols (or any acid, for that matter). By examining the resonance structures, it is possible to assess the relative stability of m- and p-nitrophenols.Therefore, ortho- and para-nitrophenol are both more acidic than meta-nitrophenol as a result of resonance effects.Sort the following substances in ascending order of acidity: One is ortho-nitrophenol. Paranitrophenol 2. Para-methylphenol 3. 4 Nitrocyclohexanol An intermediary in the creation of paracetamol is 4-nitrophenol. It is then acetylated with acetic anhydride after being reduced to 4-aminophenol.

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Answer:

Option 1:

Cu(NO3)2 + Ag

hope this was helpful

The dialysis tube was placed in a solution with a higher concentration of solutes than the 97% water solution inside the tube.

Solution is a way of resolving a problem or addressing an issue. It often involves identifying the underlying cause of the issue and then coming up with a plan that can be implemented to address the problem. Solutions may involve simple steps, such as changing a behavior, or they may involve more complicated processes that require multiple steps, such as creating new policies or procedures. Solutions should be designed to be effective, sustainable, and measurable.

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An ideal gas is a gas composed of a large number of identical molecules that obey the ideal gas law.

What do you mean by Gas?

Gas is a state of matter made of atoms and molecules that are not bound together, allowing them to move freely and take the shape and volume of their container. It is one of the four fundamental states of matter (the others being solid, liquid, and plasma).

The heat exchanged in a two-step process is given by

q = CpΔT + (P1V1 – P2V2)

where Cp is the specific heat capacity of the gas, ΔT is the change in temperature, P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

For the two-step process,

q = CpΔT + (2.00 atm x 6.40 L – 2.50 atm x 3.20 L)

For the one-step process,

q = CpΔT + (2.50 atm x 6.40 L – 2.50 atm x 2.56 L)

The difference in q for the two-step process and the one-step process is

q2 – q1 = (2.50 atm x 3.20 L – 2.00 atm x 6.40 L)

q2 – q1 = (7.68 L atm – 12.80 L atm)

q2 – q1 = -5.12 L atm

Since 1 L atm = 101.3 J, the difference in q for the two-step process and the one-step process is

q2 – q1 = -5.12 L atm x 101.3 J/L atm

q2 – q1 = -517.4 J.

Hence, the difference is -517.4 J.

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Answer:

Answers are in the explanation

Explanation:

Based on the reaction:

CF₄ + 2Br₂ → CBr₄ + 2F₂

The mole ratio of CF₄ is:

CF₄:Br₂ = 1:2

CF₄:CBr₄ = 1:1

CF₄:F₂ = 1:2

Moles F2:

Molar mass CF₄: 88.0g/mol

57.0g * (1mol / 88.0g) = 0.6477 moles CF₄ * (2mol F₂ / 1mol CBr₄) =

Mass Br2:

Molar mass CBr₄: 331.63g/mol

250.0g * (1mol / 331.63g) = 0.7539 moles CBr₄ * (2mol Br₂ / 1mol CF₄) =

1.51 moles Br₂ * (159.808g / mol) =

Moles F2:

4.8 moles CF₄ * (2mol F₂ / 1mol CF₄) =

To determine the rate law for the reaction A + B -> products, we need to examine how the rate of the reaction changes as the concentrations of A and B change. From the given data, we can see that when the concentration of A is doubled, the rate of the reaction also doubles. Similarly, when the concentration of B is doubled, the rate of the reaction also doubles. This indicates that the rate of the reaction is directly proportional to the concentrations of both A and B.

Based on this information, the rate law for the reaction can be expressed as Rate = k[A]*[B], where k is the rate constant. The exponents x and y in the rate law represent the order of the reaction with respect to A and B, respectively. Since the rate of the reaction is directly proportional to the concentrations of both A and B, the exponents x and y would both be equal to 1.

Therefore, the values of x and y are C) x = 1 and y = 1.

The 1H NMR signals of the indicated protons would be split into three peaks.

What are Protons?

Protons are subatomic particles that are present in the nucleus of an atom. They have a positive electric charge and are one of the three main components of an atom, along with electrons and neutrons. Protons are the heaviest of the three particles and make up a large portion of an atom's mass. The number of protons in an atom is known as its atomic number and is what determines an element's chemical behavior and properties.

The split happens because each proton is coupled to two other protons, and each proton is affected by the other two, resulting in a triplet.

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The empirical formula of the compound is MnO2.

The empirical formula of a substance is the simplest whole-number ratio of atoms in a compound. To find the empirical formula of a compound, you first need to determine the number of moles of each element present in the compound.

Given that the percent composition of the compound is 70% Mn and 30% O, we can assume that 100g of the compound contains 70g Mn and 30g O.

To convert mass to moles, we need to know the molar mass of each element. The molar mass of Mn is 54.9380 g/mol, and the molar mass of O is 16.00 g/mol.

So, we have:

The simplest whole number ratio of Mn and O that gives 1.27 moles Mn and 1.87 moles O is 1:2.

Therefore, the empirical formula of the compound is MnO2.

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KI - Ionic compound, KCl -Ionic compound,

C₆H₁₂O₆ - Covalent compound, C₆H₄Cl₂ - Covalent compound,  

KNO₃ - Ionic compound, C₆H₅COOH - Covalent compound

CH₃COOH - Covalent compound, Paraffin wax - Covalent compound

HCl - Covalent compound

Ionic compounds are formed from the interaction between cation ions and anions. A cation of an atom can be described as an electropositive ion and can donate valence electrons. Similarly, anions of an atom are electronegative ions and can accept electrons.

In an ionic compound, there is a complete transfer of electrons in the formation of an ionic bond, therefore, there exists an electrostatic force of attraction between the ions that forms a strong bond.

In a covalent compound, there is the mutual sharing of electrons in the covalent bonds. The shared electrons are hard to give away as nuclei of two atoms together share the electrons and create a bond stronger.

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The inland area has a Continental climate.

Inland climates are typically more severe. Summers might be quite hot, and winters could be very frigid. Rainfall can be scarce.

In inland area the water bodies take long time to heat up and cool down, so they absorb all the heat during the spring and summer when the sun is at its greatest before slowly losing it throughout the fall and winter when the temperature starts to drop.

On the other hand, it warms up and cools down far more quickly on land, that's why the  inland are more cooler.

Inland absorbs and releases heat energy more quickly than water, inland places typically experience higher temperature variations from day to night and from season to season, so that inland is hotter area also.

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KI - Ionic compound,  KCl - Ionic compound,

C₆H₁₂O₆ - Covalent compound, KNO₃ - Ionic compound,

C₆H₄Cl₂ - Covalent compound, C₆H₅COOH - Covalent compound

CH₃COOH - Covalent compound, Parafin wax - Covalent

HCl - Covalent compound

Ionic compounds can be classified as compounds formed between cation ions and an anion. A cation can be described as an electropositive ion and has the tendency to donate valence electrons. Similarly, anions are electronegative ions and have a tendency to accept electrons.

In an ionic compound, an ionic bond contains the complete transfer of electrons, therefore, there exists an electrostatic force of attraction that forms a strong bond.

In a covalent compound, the covalent bond exhibits the mutual sharing of electrons. Shared pairs of electrons are hard to give away as nuclei of two chemical elements together share the electrons and produce a bond stronger.

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Increasing the amplitude means you are increasing the energy of a wave option -D is correct answer.

The distance between the wave's base and its crest is its amplitude. It represents the furthest the vibrating body has traveled.

As the vibration of the sound particles increases, the amplitude length also grows. The intensity and energy of the sound particle particles increase as a result. The sound is louder as a result of the increased energy.

The energy increases with increasing amplitude. In conclusion, waves carry energy. Their frequency and amplitude are related to the amount of energy they carry. Energy increases with frequency and amplitude, respectively, as they both rise.

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The quantity of solar energy available to produce electricity is not affected by location on Earth's surface. This statement is true about solar energy.

Solar energy uses the sun's rays to create heat, light, and electricity. It is a renewable energy source. Heat may be employed in industrial activities like manufacturing whereas light can be immediately transformed into energy..

Solar energy may be converted directly into electrical power. A nonmechanical device called a photovoltaic cell is often constructed of silicon alloys. Photons, or solar energy particles, make up sunlight.

Due to the employment of particular grade silicon and silver during production, solar cells have a high cost of production. Solar cells don't have any moving components, so they may be readily installed in distant locations, but once installed, they don't require any care.

Thus, option D is correct.

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The balanced chemical reaction is :

[tex]O_2 + 4Na \ -> \ 2Na_2O[/tex]

Number of moles of Na, [tex]n = \dfrac{14.6}{23} = 0.635 \ mol[/tex] .

Now, from balance chemical reaction we can see that 1 mole of oxygen reacts with 4 moles of sodium.

So, number of moles of oxygen are :

[tex]n = \dfrac{0.635}{4}\ mole[/tex]

So, amount of oxygen required is :

[tex]m = \dfrac{0.635 \times 32}{4}\ gm\\\\m = 5.08 \ gm[/tex]

Therefore, 5.08 gram of oxygen will react with 14.6 gram of sodium.

The nuclear product of radioactive decay is called the daughter nuclide.

True

Radioactivity is a phenomenon in which particles such as alpha, beta and gamma rays are emitted from unstable atomic nuclei. This is due to the fact that the nucleus is unstable and requires a rearrangement of its protons and neutrons. Radioactive isotopes can be found in nature, or they can be artificially created. Radioactivity has many useful applications, such as medical imaging, cancer treatments, smoke detectors, and nuclear energy. It also has some potential dangers, such as radiation exposure and the risk of nuclear disasters.

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Answer:

c2h4o2

Explanation:

I am using my cell. This could take a bit

The Empical formula has a mass of

C 12

2H 2

O 16

total = 30

The molecular mass is given as 60 which is 2 times the empirical mass. Therefore multiply each element by 2 in the empirical formula.

You get C2H4O2

Moving down the concentration gradient means that materials move from an area of high concentration of the material to an area of low concentration of the material.

In chemistry, concentration is the amount of a substance in a given space. Another way to describe concentration is the proportion of the solute to a solvent or entire solution. In general, mass/unit volume is used to express concentration. Instead of using volume, concentration can be stated as a mass per unit. Although concentration is typically used to describe chemical solutions, it may be computed for any mixture.

This can be seen in osmosis, where water moves from a higher concentration of solute to a lower concentration of solute.

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Answer:

B) by first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of Reaction 2

Explanation:

C2H2 (g)+2H2 (g)→C2H6 (g)   ΔH=−75 kcal

C2H4 (g)+H2 (g)→C2H6 (g)     ΔH=−33 kcal

C2H2 (g)+H2 (g)→C2H4 (g)     ΔH= ?

First step - Reverse reaction 2.

C2H6 (g)  → C2H4 (g) + H2 (g)    ΔH= 33 kcal

Second step - Add reaction 1 and the reversed reaction 2. This gives us:

C2H2 (g) + 2H2 (g)  +  C2H6 (g) → C2H6 (g) + C2H4 (g) + H2 (g)

Simplifying gives:

C2H2 (g)+H2 (g)→C2H4 (g)

The correct option is:

B) by first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of Reaction 2

0.5 moles of carbon weigh 6.0055 grams.

One of the chemical elements is carbon. The letter C stands for carbon, and the letter g stands for grams. As a result, 0.5 moles of carbon per gram is equivalent to 0.5 moles of carbon per gram, 0.5 moles of carbon per gram, and 0.5 moles of C per gram.

Carbon has a 12.011 atomic mass. Thus, one mole of carbon has a mass of 12.011 grams (12.011 g/mol). We multiply 0.5 moles of carbon by 12.011 to get grams, and vice versa.

no. of Grams = Moles of Carbon x 12.011

                     =0.5 × 12.011 = 6.0055

0.5 moles of carbon equal 6.0055 grams.

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The complete question is

How many grams is 0.5 moles of carbon

In the given question,It will take Caroline 1.2 hours  to travel 45 miles if she is traveling 37 mph (miles per hour).

As we know the velocity formula:

v = d/t

Where

V is velocity, d is distance and t is time.

as given in the question

distance = 45 miles

velocity = 37 mph

To find time t,

put the values in the formula:

t = d/v

t = 45/37

t = 1.2 hours

It will take Caroline 1.2 hours  to travel 45 miles if she is traveling 37 mph (miles per hour).

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The surface temperature of a block of solid carbon dioxide (dry ice) is -78.5 degrees Celsius (-109.8 degrees F). Once it reaches this temperature, carbon dioxide completely bypasses the liquid state and transforms into a gas. One pound of dry ice produces 250 liters of carbon dioxide gas!

Carbon dioxide in the form of dry ice is employed. Sublimation is the process by which CO2 transforms from a solid to a gas without first undergoing a liquid phase, and it takes place at pressures lower than 5.13 atm and temperatures higher than 56.4 °C (216.8 K; 69.5 °F) (the triple point).

When a substance changes immediately from a solid to a gas without melting beforehand. The carbon dioxide is still present; it simply passes.

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Answer:

Sublimation

Explanation:

C

Answer:

yes

Explanation:

The molecular formula for a compound can be the same as or a multiple of the compound's empirical formula. Molecular formulas are compact and easy to communicate; however, they lack the information about bonding and atomic arrangement that is provided in a structural formula.