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When two nitrogen atoms combine, they form a

A) Compound

B) Liquid

C) mixture

D) Molecule

The Match of each marked point and arrow in the phase diagram shown with the correct description Instructions are:

1 = Triple point

2 = A liquid cools down, freezes, and cools further.

3 = A gas is compressed at constant temperature and becomes a liquid.

4 = Critical point

5 = A substance in the solid phase

The temperature and pressure at which a substance's three phases—gas, liquid, and solid are said to coexist in thermodynamic equilibrium are known as the triple point in thermodynamics.

Therefore, one can say that the tip of a phase equilibrium curve is referred to as a critical point (or critical state) in thermodynamics. The liquid-vapor critical point, the point on the pressure-temperature curve that marks the circumstances in which a liquid and its vapor can coexist, is the most notable example.

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Answer:

Explanation:

The substances that are present at the beginning are called reactants and the substances present at the end are called products. Sometimes when reactants are put into a reaction vessel, a reaction will take place to produce products. Reactants are the starting materials, that is, whatever we have as our initial ingredients.Oxygen, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere. Oxygen forms compounds by reaction with practically any other element.

To calculate the final pH of water after the addition of 0.01 mL of 1 M HCl, we need to consider the dissociation of HCl in water and the resulting increase in hydrogen ion concentration.

pH is a value used to find out the acidity or alkalinity of an aqueous solution. It is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H⁺) in the solution:

pH = -log[H⁺]

HCl dissociates in water as follows:

HCl + H₂O ⇌ H3O⁺ + Cl⁻

The equilibrium constant for this reaction is:

K = [H3O⁺][Cl⁻]/[HCl]

Since we are adding a very small amount of HCl to a large amount of water, we can assume that the concentration of Cl⁻ and H3O⁺ are negligible compared to the initial concentration of water. Therefore, we can simplify the expression for K as:

K ≈ [H3O⁺][Cl⁻]/[HCl] ≈ [H3O⁺]/[HCl]

At equilibrium, the concentration of HCl will decrease by 0.01 mM, while the concentration of H3O⁺ will increase by the same amount. Therefore, the new concentration of H3O⁺ can be calculated as:

[H3O⁺] = [HCl]added / Vfinal

where [HCl]added is the concentration of HCl added (1 M x 0.01 mL / 1 L = 1 x 10⁻⁵ M) and Vfinal is the final volume of the solution (1 L).

[H3O⁺] = 1 x 10⁻⁵ M / 1 L = 1 x 10⁻⁵ M

The pH of the solution can be computed using the following equation:

pH = -log[H3O⁺]

pH = -log(1 x 10⁻⁵) = 5

Therefore, the final pH of water after the addition of 0.01 mL of 1 M HCl is 5.0, which is more acidic than the original pH of 6.8.

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Digital road maps are different from paper and road maps in that they allow users to plan routes before a trip, they can be used anywhere in the world, and they can be updated almost immediately. They also show both major and minor roads in a region.

Digital road maps are a type of digital map that is based on GIS data. This data is collected from various sources and is used to create a detailed representation of the real world.  The digital road map allows the user to zoom in and out and to see different levels of detail, depending on their needs. They also allow the user to search for specific locations, find directions, and plan routes before they begin their trip.

On the other hand, paper maps are usually printed on paper and can be difficult to read in low light conditions. They are also limited in the amount of detail that they can show, and they may not always be up-to-date.

Road maps, on the other hand, are a type of map that shows roads and highways in a region. They may include some additional features such as rest areas, gas stations, and other points of interest. Road maps are typically printed on paper and are often used for navigation while driving. They are not as detailed as digital road maps, and they can quickly become outdated as new roads are built.

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Answer:

D

Explanation:

The unit used to measure atomic mass is the atomic mass unit (amu). A single amu is equivalent to 1/12 the mass of an atom from the carbon-12 isotopIsotopes with different numbers of protons and neutrons will have an actual mass slightly different from the atomic mass calculated in atomic mass units.

The orbital's orientation in space is described by the magnetic quantum number (m). Any number between -l and +l may represent the value of m.

The electron's orbital form is determined by a quantum number called the azimuthal quantum number. Any integer between 0 and n-1 can be used to represent the value of l, and as it rises, the orbital's form becomes more complex.

The quantum numbers that are involved have been shown above.

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Answer:

D

Explanation:

Answer:

I know i'm late but here the answer Heat is considered "lost" energy because it cannot be used for work.

Explanation:

Answer:

It is A. hydrogen -2 has one more proton

Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

bonding driven by ionic interactions.

Explanation:

Answer:

4 millllllermeeters jb

An impact of the specific heat of the water on the planet is that islands and coastal places have moderately pleasant climates. Therefore, option A is correct.

The specific heat of water is relatively high compared to other substances. This means that water requires a significant amount of heat energy to increase its temperature. As a result, water has a stabilizing effect on the climate of coastal and island regions.

The high specific heat of the water helps to moderate temperature changes, resulting in milder and more pleasant climates in these areas.

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The correct sequence is higher temperature→ more kinetic energy→ more space between particles→ higher volume.

According to the postulates of Kinetic gas theory:

Postulate 1: It states that the average kinetic energy of gas particles is proportional to the absolute temperature of the gas.

Which states that the higher temperature, the higher the kinetic energy of the molecules, which is the start of the sequence of the relationship between temperature and volume.

Postulate 2: Average kinetic energy is proportional to the square of the speed, it shows that at higher the kinetic energy the faster the molecules will move.

Postulate 3: As the particles move faster, the particles will collide more frequently so they will move away from each other, occupying more space.

Postulate 4: More space between the molecules results in more volume.

So, the complete and correct sequence is higher temperature → higher kinetic energy (higher speed) → more space → more volume.

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Answer:

you need to state the options

Explanation:

The balanced equation is

2  H2        +    02 ======> 2 H2 O

so it takes twice as many H2 moles as O2 to complete the reaction

  the chemist does not have enough  H2 (needs 8 moles)   , so H2 is the limiting reactant .

The rate law and the value of k for the given reaction is 1.7×103 M⁻²s⁻¹. Therefore, option D is correct.

The word "rate law" refers to an expression that expresses reaction rate as the product of the stoichiometric coefficient of the reacting species in a balanced chemical equation multiplied by the molar concentration of the reactants, with each term raised to a power.

\(\rm Rate = k \times [NO]^{n} x [O_{2}]^ {m}\)

Thus, m must = 1

\(\rm Rate\ 1 = k \times [NO 1]^ {m} x [O_{2} 1]^ {n}\\Rate\ 2 = k \time [NO 2]^ {m} x [O_2 2]^ {n}\)

Rearranging this equation

\(Rate1 / [O_2 1]^{n} = k x [NO1]^ {m}Rate2 / [O_2 2]^{n} = k x [NO2]\)

but  [NO 1] = [NO 2]

Hence,

\(Rate1 / [O_2 1]^ {n}= Rate2 / [O_2 2]^{n}\)

Rearranging and substituting in the values

\(([O_2 2] / [O_2 1])^{n} = Rate2 / Rate 1\)

\(2^{n} = 2\)

So, n = 1

Same from run 1 to 3

[NO] doubled

[O₂] stayed constant

Rate quadrupled

\((2)^{n} = 4\)

n = 2

we know that rate = k x [NO]² x [O₂]

Substitute in any value for [NO], [O₂] and rate and calculate K

k = rate / [NO]² x [O₂]

= (8.55x10⁻³ M / sec) / ((0.030M)² x (0.0055M))

= 1.7×103 M⁻²s⁻¹

Thus, option D is correct.

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Your question is incomplete, most probably complete question is

Determine the rate law and the value of k for the following reaction using the data provided.

2 NO(g) + O2(g) 2 NO2(g)

[NO]i (M) [O2]i (M) Initial Rate (M-1s-1)

0.030 0.0055 8.55 x 10-3

0.030 0.0110 1.71 x 10-2

0.060 0.0055 3.42 x 10-2

A. Rate = 57 M-1s-1[NO][O2]

B. Rate = 3.8 M-1/2s-1[NO][O2]1/2

C. Rate = 3.1×105 M-3s-1[NO]2[O2]2

D. Rate = 1.7×103 M-2s–1[NO]2[O2]

Answer:

Radioactive decay is a random event.

Explanation:

on edge

Answer:

Radioactive decay is a random event.

Explanation:

Edge 2020

Weight is best defined as the force of gravity on an object (option C).

Weight is the force on an object due to the gravitational attraction between it and the Earth (or whatever astronomical object it is primarily influenced by).

Weight is different from mass being that weight is a dependent on the gravitational force of the object's habitation, however, mass is not.

For example, the mass of an object on Earth can be 10kg, however, the weight of the object is 100N because the gravitational force of the Earth is 10m/s².

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Answer:

I hope this helps

Explanation:

To calculate the concentration of hydrogen ions ([H+]) from the pH of a solution, you can use the following formula:

[H+] = 10^(-pH)

Let's apply this formula to determine the [H+] for a solution with a pH of 5.4:

[H+] = 10^(-5.4)

Calculating this using a scientific calculator or mathematical software, we get:

[H+] ≈ 3.981 x 10^(-6) mol/L

Therefore, the concentration of hydrogen ions in the solution is approximately 3.981 x 10^(-6) mol/L.

The concentration of hydrogen ions in the solution is approximately 2.51 × 10^(-6) mol/L.

To calculate the concentration of hydrogen ions ([H+]) in a solution based on its pH, we can use the formula:

[H+] = 10^(-pH)

Given that the pH of the solution is 5.4, we can substitute this value into the formula:

[H+] = 10^(-5.4)

Using a scientific calculator or logarithmic tables, we can evaluate this expression:

[H+] ≈ 2.51 × 10^(-6) mol/L

Therefore, the concentration of hydrogen ions in the solution is approximately 2.51 × 10^(-6) mol/L.

To clarify the calculation, we take the negative logarithm (base 10) of the hydrogen ion concentration to obtain the pH value. In this case, we are given the pH and we use the formula in reverse to determine the hydrogen ion concentration [H+]. The result indicates that the solution has a relatively low concentration of hydrogen ions.

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Here the temperature of the two iron pieces are the same. Therefore, there will be no heat transfer between the metal samples. Their average kinetic energy will be the same.

Heat energy will transfer from high temperature region to low temperature region until a thermal equilibrium is achieved there. Therefore, heat will always transfer from a hotter body to colder body.

According to kinetic theory of matter. The kinetic energy of  particles in a substance is directly proportional to the temperature. At the same temperature, substances have the same range of average kinetic energy.

Here, the iron pieces have the same temperature. Hence, there will be no heat transfer between them. However, at the same temperature they will have equal average kinetic energies.

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Stoichiometry refers to the relationship between the moles of reactants and products.

This question must be solved using both stoichiometry and the gas laws

The reaction equation is;

2 Al(s) + 6 HCl(aq) --------> 2 AICI3, (aq) + 3 H2(g)

Number of moles of Al = 3g/27g/mol = 0.11 moles

According to the reaction equation;

2 moles of Al yields 3 moles of H2

0.11 moles of Al yields 0.11 * 3/2 = 0.165 moles

From the ideal gas equation;

PV=nRT

P = ?

n= 0.165 moles

V = 0.85 L

T = 297 K

R = 0.082 atmLK-1mol-1

P= nRT/V

P = 0.165 * 0.082 * 297/0.85

P= 4.73 atm

P1 = 4.73 atm

T1 = 297 K

V1 = 0.85 L

P2 = 1 atm

T2 =273 K

V2 =?

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 =  4.73 * 0.85 * 273/1 * 297

V2 = 3.69 L

P1 = 760 mmHg

T1 = 273 K

V1 = 3.69

P2 = 438 mm Hg

T2 = 284.2 K

V2 =?

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 = 760 * 3.69 * 284.2/438 *273

V2 = 797010.48/119574

V2= 6.67 L

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At a given temperature, the saturation point specifies the maximum amount of solute (here, cobalt(II) nitrate) that can dissolve in a specified amount of solvent (water).

Various conditions, including temperature and solvent, determine the saturation of cobalt(II) nitrate (Co(NO3)2). Water is highly soluble in cobalt(II) nitrate and a saturated solution can form at room temperature (around 25 degrees Celsius).

Water at room temperature contains approximately 420 grams of cobalt(II) nitrate as its saturation concentration. Consequently, the solution is considered saturated at this concentration because no more cobalt(II) nitrate can dissolve in the water. In the saturated solution, cobalt(II) nitrate will not dissolve and will settle at the bottom of the container as solids.

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Answer:

CaO and Fe2O3 or FeO

Explanation:

It is just that.

Answer:6.7892 meters

Explanation:

Answer:

Viruses, bacteria, fungi, and parasites.

Explanation:

hope this helps and is right :)

Answer:

Graham's law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight

Explanation:

Answer:

4.35 mL

Explanation:

The water line falls halfway inbetween the 4.4 and 4.3 mark.

The number halfway between 4.3 and 4.4 is 4.35.

Therefore, the volume of the liquid in the graduated cylinder is 4.35 mL.