some ammonia is sealed in a container and allowed to equilibrate at a particular temperature. the reaction is endothermic. 2nh3(g) ↔ n2(g) 3h2(g) in which direction will the reaction occur if ammonia is added to the system?

The decomposed mass of H₂O₂(aq) in beaker 2 is m1 - m2.

To calculate the mass of H₂O₂(aq) that decomposed in beaker 2 during the 60-second period, we need to find the difference in mass before and after the reaction.

Let's assume that the mass of beaker 2 with H₂O₂(aq) and MnO₂(s) at the start of the 60-second period is m1, and the mass at the end of the 60-second period is m2.

The mass of H₂O₂(aq) that decomposed can be calculated as:

Mass of H₂O₂(aq) decomposed = m1 - m2

Note that the mass of MnO₂(s) added (0.10g) does not affect the calculation since it remains unchanged throughout the reaction.

Since we don't have the actual mass values provided, you will need to refer to the recorded data or measurements from the experiment to calculate the mass of H₂O₂(aq) that decomposed in beaker 2.

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Using the equations for the ionization of each proton (H+) :

k1 = 2.5x10^-4 and k2 = 2.5x10^-7. (for H₃AsO₄, ka1 = 2.5x10-4. ka2 = 5.6x10-8, ka3 = 3.0x10-13)

k1 and k2 for H₃AsO₄, we need to use the equations for the ionization of each proton (H+):

H₃AsO₄ + H₂O ⇌ H₃O+ + H₂AsO₄⁻   (Ka1)

H₂AsO₄⁻ + H₂O ⇌ H₃O+ + HAsO₄²⁻  (Ka2)

Ka1 = [H₃O+][H₂AsO₄⁻]/[H₃AsO₄]

2.5x10^-4 = [H₃O+][H₂AsO₄⁻]/[H₃AsO₄]

Ka2 = [H₃O+][HAsO₄²⁻]/[H₂AsO₄⁻]

5.6x10^-8 = [H₃O+][HAsO₄²⁻]/[H₂AsO₄⁻]

Since we are given the concentrations of H₃AsO₄, H₂AsO₄⁻, and HAsO₄²⁻ are initially negligible, we can assume that the concentrations of H₃O+ and H₂AsO₄⁻ are equal to x at equilibrium. Then, the concentration of HAsO₄²⁻ at equilibrium is (x^2)/[H₃AsO₄].

Using these assumptions and solving the equations for x, we get:

Ka1 = x^2/[H₃AsO₄] = x^2/(0.1 M) = 2.5x10^-4

x^2 = 2.5x10^-5

x = 5.0x10^-3 M

Ka2 = x^2/[H₂AsO₄⁻] = (5.0x10^-3 M)^2/(0.1 M) = 2.5x10^-7

Therefore, k1 = 2.5x10^-4 and k2 = 2.5x10^-7.

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The net force is 100 Newtons to to the right  as direction of  net force is opposite to the direction of force.

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

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Answer:

kkahshsi

Explanation:

jsjysvs7xbzj sis zyhzoa w sizndkzjaos skzn8zjjzhxlx zjzjzjhzbsjz sksnzinsizjdi sis7gshsjsjsjiajwiwiw iajaja naskoh oe

Based on the intermolecular forces present. The increasing order of boiling point of the following compound is CH₃CH₃ < H₂O < CH₄.

The boiling point is the point or temperature at which the vapor pressure of a compound equals the vapor pressure of the atmosphere.

The boiling point of different compounds and substances is different. The boiling point of water is 100 °C, and the boiling point of  CH₃CH₃ is -89 °C. The boiling point of CH₄ is 161.6 °C.

Thus, the increasing order of boiling point of the following compound is CH₃CH₃ < H₂O < CH₄.

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Answer:

hi

Explanation:

hi

The alkyl group (R) attached to the chiral α-carbon of  L-threonine amino acid is H₃C-CH-OH. The Fischer projection of L-threonine is attached below.

Amino acids can be defined as organic compounds that contain both amino and carboxylic acid functional groups. Most amino acids are α-amino acids, which comprise proteins.

Amino acids are divided according to the positions of the functional groups, such as alpha- (α-), beta- (β-), gamma- (γ-), or delta- (δ-) amino acids. As proteins, amino acids form 2nd largest component of human muscles and tissues.

In the structure of amino acids, R denotes a side chain attached to each amino acid. The carbon atom attached to the carboxyl group (-COO) is called the α–carbon. Amino acids with an amino group (-NH₂) attached directly to the alpha-carbon is known as α-amino acids.

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Answer:

False

Explanation:

The relationship between energy and amplitude can be written as eαa^2

This means that the energy of a wave is directly proportional to the square of the amplitude.

Answer:

58.44 g/mole

Explanation:

To calculate the molar mass of NaCl (sodium chloride), we need to find the sum of the atomic masses of sodium (Na) and chlorine (Cl) off the periodic table.

Atomic mass of Na = 22.99 g/mol

Atomic mass of Cl = 35.45 g/mol

Molar mass of NaCl = Atomic mass of Na + Atomic mass of Cl

= 22.99 g/mol + 35.45 g/mol

= 58.44 g/mol

Therefore, the molar mass of NaCl is 58.44 g/mol.

Juice is liquid because it is composed of water and other substances such as sugars, vitamins, and minerals. These ingredients dissolve in water, resulting in a liquid form.

Different types of juice are made from different fruits, vegetables, or other plant sources, which contain various concentrations of water and other components. As a result, the exact composition of a juice can vary, leading to differences in its color, taste, and nutritional content.

The water in juice comes from the fruits or vegetables themselves, as well as any water that is added during the juicing process. Most fruits and vegetables contain a high percentage of water, which is necessary for their growth and survival. For example, watermelons are about 92% water, while oranges are about 87% water.

In addition to water, juice contains other components such as sugars, vitamins, and minerals. These substances are dissolved in the water, giving juice its characteristic taste and nutritional content. For example, orange juice is rich in vitamin C, while carrot juice is high in beta-carotene.

Overall, juice is liquid because it is composed of water and other substances that are soluble in water. The specific composition of a juice can vary depending on the fruits or vegetables used, resulting in a range of different flavors, colors, and nutritional profiles.

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Answer:

The orest one is possible D

Explanation:

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

The molar concentration of h3O+ = 7.59 × 10^-4 M

What is pH value?

It is a measure of how acidic or basic water is. It is determined by its pH. From 0 to 14, with 7 serving as neutral, the range is available. Acidity is indicated by pH values lower than 7, while baseness is indicated by pH values higher than 7. A critical indicator of water quality is the pH of the solution.

The molar concentration of [H3O+] in a cola with a pH of 3.120 can be calculated by:

[H3O+]=10−pH

[H3O+]=10−3.120

[H3O+]=7.59×10−4M

Ingestion of large amounts of phosphoric acid found in cola can upset the body's regulation of bone metabolism and reduce the absorption of calcium from the diet. For this reason, people who are at risk of developing osteoporosis are often advised not to drink much cola.

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The electron must be traveling at a minimum speed of approximately 5.62 million meters per second to resolve a single carbon atom.

The de Broglie wavelength is given by the formula λ = h/p, where λ is the wavelength, h is Planck's constant, and p is the momentum of the electron.

To calculate the minimum speed required, we can equate the de Broglie wavelength of an electron with the size of a carbon atom, and solve for the velocity.

The size of a carbon atom is given as 135 pm. Converting this to meters, we get:

135 pm = 135 x 10^-12 m

Substituting this value for λ, we get:

λ = h/p = 135 x 10^-12 m

The momentum of the electron can be written as p = mv, where m is the mass of the electron and v is its velocity.

Substituting this value for p, we get:

λ = h/mv = 135 x 10^-12 m

Solving for v, we get:

v = h/(mλ) = (6.626 x 10^-34 J s)/(9.109 x 10^-31 kg)(135 x 10^-12 m)

v ≈ 5.62 x 10^6 m/s

Therefore, the electron must be traveling at a minimum speed of approximately 5.62 million meters per second to resolve a single carbon atom.

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Answer:

line 2

Explanation:

Because it's where the products and reactants meet together.

The system at dynamic equilibrium is 2.

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Since no sugar will be added or removed, the number or moles of it in the glas won't change.

Let's call this quantity:

The molar concetrnation can be written as the followin equation:

Where C is the concentration given the number of moles of sugar and the volume V.

We can rewrite this as:

Now, before the ice melts, the volume of the lemonate is 150 mL and the sugar concentration is 2.27 mol/L. Let's call this situation 1:

After the ice melt the one third it will, we will have a certain volume and the concentration we want 1.88 mol/L. Let's call this situation 2:

Now, we can put thouse tofether:

And we can solve for the unknown volume of situation 2:

Since the final volume is approximately 181 mL, the difference between it and the initial volume is the volume of water that came from the melted part of the ice:

Since we assume that the density of the water is 1.00 g/mL, we can calculate the mass it represents:

And since this is only 1 third of the ice (the rest won;t melt), we know that the whole ice will have three times this mass:

So, it should be added approximatelt 93 grams of ice.

One limitation of the linnaean classification system is that it is primarily based on physical attributes.

The classification system of Carolus Linnaeus is a system made up of hierarchical grouping of organisms into taxa.

The taxa he classified organisms into are as follows:

However, one flaw of this system of classification is that it is based on solely physical qualities of organisms as there was no technical know-how of molecular biology.

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Two single bonds and two lone pairs of electrons: Oxygen molecule (O2)

Four single bonds and no lone pairs of electrons: Methane molecule (CH4)

Three single bonds and one lone pair of electrons: Ammonia molecule (NH3)

Six single bonds and no lone pairs of electrons: Carbon dioxide molecule (CO2)

Two double bonds and no lone pairs of electrons: Oxygen molecule (O2)

Three double bonds and no lone pairs of electrons: Nitrogen molecule (N2)

Five single bonds and no lone pairs of electrons: Phosphorus pentachloride molecule (PCl5)

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Explanation:

thermal changes are those in which heat exchange is involved like endothermic and exothermic

while in chemical changes collision between the reactant occurs which result into product

The natural organic compounds ethylene and tetrachloroethylene have been chemically converted into different substances through chemical reactions.

Ethylene, a hydrocarbon with the chemical formula C2H4, can undergo various reactions to form a wide range of products, including ethylene oxide, ethylene glycol, and polyethylene. Tetrachloroethylene, also known as perchloroethylene or PCE, is a chlorinated hydrocarbon with the formula \(C_2Cl_4\) and is commonly used as a solvent in dry cleaning processes. It can undergo transformation reactions such as hydrolysis or dechlorination to yield different compounds. Ethylene oxide is an important intermediate chemical used in the production of various products such as plastics, detergents, and antifreeze. Ethylene glycol, derived from ethylene oxide, is a key component in the production of polyester fibers, polyethylene terephthalate (PET) plastics, and automotive antifreeze. Polyethylene, a polymer formed from the polymerization of ethylene monomers, is one of the most widely used plastics in various applications due to its versatility and durability. Tetrachloroethylene, on the other hand, can undergo chemical reactions such as hydrolysis, which breaks down the compound in the presence of water, leading to the formation of products like trichloroethylene or dichloroacetic acid.

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The final temperature of the gas is approximately 40.96 Kelvin.

To determine the final temperature of the gas, we can use the ideal gas law, which states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in Kelvin.

First, let's convert the given temperatures to Kelvin. We have:

Initial temperature: -125 degrees Celsius = 148 K (approximate)

Final temperature: Unknown

The initial conditions of the gas are as follows:

Initial pressure (P1) = 1.25 atm

Initial volume (V1) = 1250 mL = 1.25 L (since 1 L = 1000 mL)

Initial temperature (T1) = 148 K

The final conditions of the gas are as follows:

Final pressure (P2) = 50.0 atm

Final volume (V2) = 325 mL = 0.325 L

Final temperature (T2) = Unknown

Using the ideal gas law, we can set up the following equation:

(P1 * V1) / T1 = (P2 * V2) / T2

Substituting the known values:

(1.25 atm * 1.25 L) / 148 K = (50.0 atm * 0.325 L) / T2

Simplifying the equation:

T2 = (50.0 atm * 0.325 L * 148 K) / (1.25 atm * 1.25 L)

T2 = 40.96 K

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HNO2 will ionize less in 0.10 M NaCl than it does in pure water.

HNO2 is a weak acid and its ionization is affected by the presence of ions in the solution. In the presence of a common ion, the ionization of a weak acid is suppressed due to Le Chatelier's principle. Both NaCl and KNO3 are strong electrolytes that dissociate completely in water, producing Na+ and Cl- ions in the case of NaCl and K+, NO3- ions in the case of KNO3. Since NaCl provides the common ion Cl- that HNO2 produces upon ionization, its presence will suppress the ionization of HNO2.

Among the given solutions, 0.10 M NaCl will result in less ionization of HNO2 compared to pure water or 0.10 M KNO3.

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Answer: 2% w / w solution means grams of solute is dissolved in 100 grams of solution. ... 5% v / v solution means 5 ml of solute is dissolved 100 ml of solution.

Explanation:

so (w/w)% u would need a number to use it.

The Hall coefficient (RH) in this case is approximately -3.01 * 10^-6 C^-1 cc (rounded to three significant figures in exponential notation).

The Hall coefficient (RH) is a parameter used to describe the behavior of charge carriers in a material when subjected to a magnetic field. It is given by the equation RH = 1/(e * p) where e is the elementary charge and p is the total charge carrier density. In this case, we are given the acceptor doping concentration (Na) and the donor doping concentration (Nd) in units of /cc.

To calculate the Hall coefficient, we need to determine the total charge carrier density (p). The total charge carrier density can be calculated as the difference between the acceptor doping concentration and the donor doping concentration: p = Na - Nd.

Given the acceptor doping concentration Na = 4.18 * 10^15/cc and the donor doping concentration Nd = 9.40 * 10^15/cc, we can substitute these values into the equation to find p:

p = Na - Nd
  = (4.18 * 10^15/cc) - (9.40 * 10^15/cc)
  = -5.22 * 10^15/cc

Now, we can substitute the value of p into the Hall coefficient equation:

RH = 1/(e * p)
    = 1/(1.60 * 10^-19 C * (-5.22 * 10^15/cc))
    = -3.01 * 10^-6 C^-1 cc

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Answer:

The fourth answer choice.

Explanation:

This is the correct answer because dropping it, carrying it, won't to anything to change the physical state of the matter (the bowl).

Hope this helps! :)

The reaction that can be used to extract copper metal from copper sulfate solution would be equation 2.

Fe will displace Cu from CuSO4 because it is more reactive. In other words, Fe ranks higher than Cu in the reactivity series.

Thus:    \(Fe + CuSO_4 ---> Cu + FeSO_4\)

Even though Na will displace Cu from CuSO4, equation 1 will result in the formation of Cu(OH)2 instead of free Cu because it is a double replacement reaction.

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Answer:  there are 5.263 x 10^24 atoms in 1.75 moles of CHCl3.

Explanation: To calculate the number of atoms in 1.75 moles of CHCl3 (chloroform), we first need to determine the molecular formula of CHCl3 and then use Avogadro's number to convert the number of moles to the number of atoms.

The molecular formula of CHCl3 is:

Carbon (C) - 1

Hydrogen (H) - 1

Chlorine (Cl) - 3

So, the total number of atoms in CHCl3 is:

1 (C) + 1 (H) + 3 (Cl) = 5

One mole of any substance contains 6.022 x 10^23 particles, which is known as Avogadro's number. Therefore, to calculate the number of atoms in 1.75 moles of CHCl3, we need to multiply 1.75 by Avogadro's number and then by the total number of atoms in CHCl3:

1.75 mol CHCl3 x 6.022 x 10^23 molecules/mol x 5 atoms/molecule = 5.263 x 10^24 atoms of CHCl3