The pressure within a cylinder with a volume of 14.5L and 25°C is 530 torr. What is the new pressure when it is heated to 80°C and compressed to a volume of 5.7L?

24.7 g of NH4Cl will remain as excess reactant after the maximum amount of NH3 has been formed.

What is Reactant?

In a chemical reaction, a reactant is a substance that undergoes a chemical change or reaction with other substances to form a product. Reactants are typically written on the left side of a chemical equation and are used to represent the starting materials in a chemical reaction. The reactants are consumed during the reaction, and the resulting products are formed.

To determine the maximum possible yield of NH3, we first need to calculate the limiting reactant of the reaction, which is the reactant that is completely consumed and determines the maximum amount of product that can be formed.

The balanced chemical equation for the reaction is:

CaO(S) + 2 NH4Cl(s) → 2 NH3(g) + H2O(g) + CaCl2(s)

The molar mass of CaO is 56.08 g/mol, and the molar mass of NH4Cl is 53.49 g/mol.

To find the limiting reactant, we can use the mole ratio of CaO and NH4Cl in the balanced equation.

Number of moles of CaO = 139 g / 56.08 g/mol = 2.476 mol

Number of moles of NH4Cl = 245 g / 53.49 g/mol = 4.588 mol

The mole ratio of CaO to NH4Cl is 1:2, which means that 1 mole of CaO reacts with 2 moles of NH4Cl.

Therefore, the amount of NH4Cl required to react with all the CaO is:

2.476 mol CaO × (2 mol NH4Cl / 1 mol CaO) = 4.952 mol NH4Cl

Since we have only 4.588 mol of NH4Cl available, it is the limiting reactant. This means that all the NH4Cl will be consumed in the reaction and the amount of NH3 produced will be limited by the amount of NH4Cl.

The maximum possible yield of NH3 can be calculated using the mole ratio of NH4Cl and NH3 in the balanced equation:

4.588 mol NH4Cl × (2 mol NH3 / 2 mol NH4Cl) × (17.03 g NH3 / 1 mol NH3) = 155 g NH3

Therefore, the maximum possible yield of NH3 is 155 g.

To determine the mass of the excess reactant remaining, we can use the amount of NH4Cl consumed in the reaction and subtract it from the initial amount of NH4Cl:

245 g NH4Cl - (4.588 mol NH4Cl × 53.49 g/mol) = 24.7 g NH4Cl

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Answer:

A i believe

Explanation:

Answer:

-182

Explanation:

according to the table it's the answer

According to forces of attraction and given data the substance with lowest melting point is that one with -182°C.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.Thus,the substance with lowest melting point is that one with -182°C.

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if a diluted nitric acid solution has a concentration of 0. 0001 M. The solution's pH value is 4.

What exactly is pH?

The pH scale, which ranges from 0 to 14, is used to determine whether a material is acidic, basic, or neutral.

How can I determine the pH of a solution?

The hydrogen ion is represented to compute the pH. Here it is expressed:

pH = - log[H⁺]

Therefore, in case of the nitric acid(HNO₃) ,the concentration of hydrogen ion = 0.0001 M.

So, pH = - log[0.0001]

⇒pH = -log(1/10000)

⇒pH = -log(10)⁻⁴

⇒pH = -4 x -log(10)

⇒pH = -4 x (-1)

⇒pH = 4

Therefore it is concluded that the pH of the nitric acid solution is 4.

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Answer:

physical science

Explanation:

because it touches all other natural sciences. biology,physics, etc. it is known as the central science:)

Chemistry is a branch of science that focuses on the study of matter, its properties, composition, and how it undergoes changes.Thus, it is a physical science.

Chemistry is a physical science because it investigates the physical and chemical properties of matter, including atoms, molecules, and their interactions. It is also considered a natural science because it studies natural phenomena and processes that occur in the world around us.

Chemistry plays a crucial role in various fields such as medicine, environmental science, materials science, and biochemistry.

In chemistry, scientists use experiments and observations to gather data and analyze it using various techniques and tools. They also develop theories and models to explain the behavior and interactions of matter.

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Answer:

D. Farmers wanted a political party that represented their interests.

Explanation:

got 100% on edge.

Answer:

D. Farmers wanted a political party that represented their interests.

Explanation:

edge 2020

A Biochemist is a type of chemist understands the structure of living systems and, in turn, their functions and ways to control them.

The chemistry of living system is known as Biochemistry.

Biochemistry is a study of the chemical changes that occur in living organisms.

Scientists that study biochemistry are called Biochemists.

Biochemistry studies the structure and function of biological molecules such as carbohydrates, lipids, proteins, e.t.c., as well the chemical reaction they undergo.

Biochemistry also studies the energy changes that occur in living systems.

In conclusion, the chemistry of living systems is called Biochemistry.

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In 0.75 moles of caffeine, there are a total of 6 carbon atoms, 7.5 hydrogen atoms, 3 nitrogen atoms, and 1.5 oxygen atoms.

To determine the total number of atoms in 0.75 moles of caffeine, we need to consider the molecular formula of caffeine, which is C8H10N4O2. The molecular formula provides the ratios of each element present in the compound. By multiplying the number of atoms in each element by the corresponding coefficient in the molecular formula, we can calculate the total number of atoms. In this case, there are 8 carbon (C) atoms, 10 hydrogen (H) atoms, 4 nitrogen (N) atoms, and 2 oxygen (O) atoms in each molecule of caffeine. Multiplying these values by 0.75 moles will give us the total number of atoms in 0.75 moles of caffeine.

The molecular formula of caffeine, C8H10N4O2, provides the number of atoms for each element present in one molecule of caffeine. In this case, there are 8 carbon (C) atoms, 10 hydrogen (H) atoms, 4 nitrogen (N) atoms, and 2 oxygen (O) atoms.

To calculate the total number of atoms in 0.75 moles of caffeine, we need to multiply the number of atoms for each element by the coefficient in the molecular formula, and then multiply that by the number of moles (0.75 moles).

For carbon (C): 8 atoms x 0.75 moles = 6 atoms (since there are 8 carbon atoms in one molecule of caffeine).

For hydrogen (H): 10 atoms x 0.75 moles = 7.5 atoms (since there are 10 hydrogen atoms in one molecule of caffeine).

For nitrogen (N): 4 atoms x 0.75 moles = 3 atoms (since there are 4 nitrogen atoms in one molecule of caffeine).

For oxygen (O): 2 atoms x 0.75 moles = 1.5 atoms (since there are 2 oxygen atoms in one molecule of caffeine).

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The correct answer is 2.3*\(10^{24}\)acetate ions. Option E.

CMA can be made from the reaction of magnesium and calcium compounds with glacial acetic acid. Acetic acid does not need to be concentrated to produce CMA when reacted with dolomite or dorimé. Acetic acid production requires fermentation of organic matter and should be done at around pH 6.0.

calculation:-

calcium magnesium acetate = camg2(c2h3o2)6

Number of acetate ions in 1 mol = 6

1 mole of calcium magnesium acetate have = 6 × 6.022 × 10^23

0.65 mole have = 6 × 6.022 × 10^23 ×0.65 ions

= 2.3 × 10^24 acetate ions.

Pure Calcium Magnesium Acetate CMA Deicer is granular calcium magnesium acetate prepared from dolomite lime and acetic acid. CMA Ice Melt is an environmentally friendly, less corrosive alternative to road salt and is Federal Highway Administration-approved in the United States. CMA is granular magnesium calcium acetate, a patented chemical formulation of dolomite lime and acetic acid. Initially identified as minor corrosion.

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Answer: D

Explanation:

took test

Answer:

D

Explanation:

got it right  

In this case, the solute is C6H4Cl2 (dichlorobenzene) and the solvent is ethanol. The molality of C6H4Cl2 in the solution is approximately 0.0210 mol/kg.

The molality of a solute in a solution is calculated by dividing the moles of the solute by the mass of the solvent in kilograms. In this case, the solute is C6H4Cl2 (dichlorobenzene) and the solvent is ethanol.
To find the moles of C6H4Cl2, we need to convert the given mass of C6H4Cl2 (2.97 g) into moles.

We can use the molar mass of C6H4Cl2, which is approximately 147.01 g/mol.
2.97 g of C6H4Cl2 / 147.01 g/mol ≈ 0.0202 mol of C6H4Cl2
Next, we need to convert the mass of the solvent (966 g of ethanol) into kilograms.
966 g of ethanol / 1000 = 0.966 kg of ethanol
Finally, we can calculate the molality:
Molality = moles of solute / mass of solvent in kg
Molality = 0.0202 mol / 0.966 kg ≈ 0.0210 mol/kg

(rounded to four significant figures)
Therefore, the molality of C6H4Cl2 in the solution is approximately 0.0210 mol/kg.
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Answer:

One of the best ways to protect your drinking water is to prevent pollution from getting into your drinking water source. Your drinking water can become polluted with animal waste, fertilizer, pesticides, herbicides, motor oil, gasoline, and other substances as they get carried to the source by runoff pollution .

Answer:

+2

Explanation:

The nitrate ion is a radical with an overall charge of -1. To get the oxidation number of lead, add up all the oxidation numbers and equate to zero. Therefore the oxidation state of lead is +2.

Answer:

+2

Explanation:

looked it up

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Answer: It’s Lower

What can you say about the pH of a carbonic acid solution compared to that of a sulfuric acid soloution with the same contention: Strong acids dissociate fully in water to produce the maximum number of \(H^{+}\)ions. The pH levels of strong acids are smaller than those of low acids, which is why the reactions rates for strong acids are greater than the reactions of weak acids with products like metals, metal carbonates, etc. Meaning The pH Level is lower.

Valence bond theory stating that a bond between two atoms is the strongest when the nuclei of the atoms are touching each other is true.

This theory states that when two valence orbitals of two different atoms overlap on each other, the bond is usually strong.

The bond formed in this scenario is usually covalent which involves sharing of the valence electrons.

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The CEC for this soil sample is 675.2 cmol(+)/kg.

The % Base Saturation for this soil sample is approximately 136.62%.

The % Acid Saturation for this soil sample is approximately 60.55%.

To    calculate the CEC, % Base Saturation (B.S.), and % Acid Saturation for the given soil sample:

a. Calculation of CEC (Cation Exchange Capacity):

CEC is the sum of exchangeable cations in the soil. From the given results, we have:

CEC = Ca2+ + Mg2+ + K+ + Al3+

CEC = (100 mg/L + 45 mg/L + 85.5 mg/L + 94.2 mg/L) / (25 g / 1000)

CEC = 168.7 mg / (25 g / 1000)

CEC = 675.2 cmol(+)/kg

b. Calculation of % Base Saturation (B.S.):

% B.S. represents the percentage of CEC occupied by base cations. In this case, we consider Ca2+, Mg2+, and K+ as base cations. The formula to calculate % B.S. is:

% B.S. = (Ca2+ + Mg2+ + K+) / CEC * 100

% B.S. = (100 mg/L + 45 mg/L + 85.5 mg/L) / (168.7 cmol(+)/kg) * 100

% B.S. = 230.5 mg / (168.7 cmol(+)/kg) * 100

% B.S. = 136.62%

c. Calculation of % Acid Saturation:

% Acid Saturation represents the percentage of CEC occupied by acid cations, in this case, H+ and Al3+. The formula to calculate % Acid Saturation is:

% Acid Saturation = (H+ + Al3+) / CEC * 100

% Acid Saturation = (8.0 mg/L + 94.2 mg/L) / (168.7 cmol(+)/kg) * 100

% Acid Saturation = 102.2 mg / (168.7 cmol(+)/kg) * 100

% Acid Saturation = 60.55%

Please note that the given values were in milligrams per liter (mg/L), and the CEC and % Saturation values were calculated assuming a conversion from mg/L to cmol(+)/kg using the mass of the soil sample (25 g).

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Answer:

B and C is your best option

BRAINLIST ???

Rust forming on a metal gate and milk going sour both involve chemical reactions that result in the breakdown of the original substance.

Rust is a result of the oxidation of iron in the presence of oxygen and water. Oxygen reacts with the iron to form iron oxide, which is rust. Milk contains lactose, a sugar, and bacteria that produce enzymes which break down the lactose into glucose and galactose. The glucose and galactose react with each other to form lactic acid, which is what makes milk sour.

Chemical reactions are involved in both cases, causing a breakdown of the original substance. In the case of rust, iron is transformed into iron oxide, which is a different substance. In the case of sour milk, lactose is transformed into lactic acid, which is also a different substance. Both processes involve a chemical change in the original substance.

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Answer:

D. Alkali metal ions will not have a negative  one charge; they will have a positive one  charge

Explanation:

Alkali metals are a found towards the left hand side of the periodic table. The comprise of Li, Na, K, Rb, Cs and Fr.

They form univalent positive ions such as Cs^+, Na^+ etc. They do not form negative ions but give out one electron to form the sort of ions stated above. Recall that metals are electropositive in nature (donate electrons).

The mistake made by Shanice is to say that group 1 elements have a negative one  charge.

Explanation:

Refer to pic.............

False, Atoms are not charge-neutral and some have permanent dipole moments(1).False, Molecules are not always charge neutral and can have permanent dipole moments(2).

Both atoms and molecules have some charge because of the electrons.

The atoms themselves have no net charge, but the electrons are negatively charged. In other words, atoms are charge-neutral but their electrons are not.

Furthermore, atoms can have permanent dipole moments as well. For instance, a molecule of HCl has a permanent dipole moment because chlorine has a higher electronegativity than hydrogen, which means that the shared electron pair is drawn closer to the chlorine than to the hydrogen.Molecules can also have a charge imbalance or permanent dipole moment.

When the molecule has an uneven distribution of charge, it becomes polar. A permanent dipole moment exists when the electrons within a covalent bond are not equally shared between the atoms.

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The volume of steam that could be produced at STP if 12.8 g of oxygen reacts with excess hydrogen is 17.92 L

We'll begin by obtaining the mole of steam produced. This can be obtained as follow:

2H₂ + O₂ -> 2H₂O

From the balanced equation above,

1 mole O₂ reacted to produce 2 moles of steam, H₂O

Therefore,

0.4 mole O₂ will react to produce = 0.4 × 2 = 0.8 mole of steam, H₂O

Finally, we shall determin the volume as follow:

At standard temperature and pressure (STP),

1 mole of H₂O = 22.4 L

Therefore,

0.8 moles of H₂O = (0.8 mole × 22.4 L) / 1 mole

0.8 moles of H₂O = 17.92 L

Thus, we can conclude that the volume produced is 17.92 L

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Answer:

Speed is the rate of change of position expressed as distance travelled per unit of time .

Explanation:

The maximum safe operating temperature the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

To calculate the maximum safe operating temperature, we need to consider the dimensions of the vessel, the maximum safe pressure, and the amount of gas inside.

First, let's convert the dimensions of the vessel from centimeters to meters:

Width = 48.0 cm = 0.48 m

Height = 57.6 cm = 0.576 m

Next, we need to calculate the volume of the vessel:

Volume = π * (radius)^2 * height

The radius of the vessel can be calculated as half of the width:

Radius = 0.48 m / 2 = 0.24 m

Volume = π * (0.24 m)^2 * 0.576 m

Volume ≈ 0.099 m^3

Now, we can use the ideal gas law to determine the maximum safe operating temperature. The ideal gas law is given by:

PV = nRT

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

Rearranging the equation to solve for T:

T = (PV) / (nR)

To calculate the number of moles, we can use the molar mass of carbon dioxide (CO2):

Molar mass of CO2 = 12.01 g/mol (for carbon) + 2 * 16.00 g/mol (for oxygen)

Molar mass of CO2 ≈ 44.01 g/mol

Converting the mass of carbon dioxide from kilograms to grams:

Mass of CO2 = 2.45 kg * 1000 g/kg

Mass of CO2 = 2450 g

Now, we can calculate the number of moles:

Number of moles = Mass of CO2 / Molar mass of CO2

Number of moles = 2450 g / 44.01 g/mol

Number of moles ≈ 55.67 mol

The gas constant R is approximately 8.314 J/(mol·K).

Now, we can substitute the values into the equation:

T = (3.40 MPa * 0.099 m^3) / (55.67 mol * 8.314 J/(mol·K))

T ≈ 1063.77 K

Converting from Kelvin to Celsius:

T ≈ 1063.77 °C

The maximum safe operating temperature that the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

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Answer: A

Explanation: Based on the Law of conservation of mass the total mass of the reactants will equal to the total mass of the products. This happens as matter is not destroyed.

Answer:

There are no atoms becuase atoms are not in elements.

Explanation:

The original size of the carbon-14 sample was 560 grams if the sample of carbon-14 has been decaying for 22,920 years and it is now 35. 0 grams.

The given data is as follows:

Material given = carbon -14

Time period = 22,,920 years

weight = 35 grams

To calculate the original sample size, we need to use the formula,

N = M (1/2)^(t/T)

35.0 g = M (1/2)^(22,920/5730)

35.0 g = M (1/2)^4

35.0 g = M (1/16)

For simplification, we need to multiply both sides by 16 to balance the value on the right side.

M = 16 * 35.0g

M = 560g

Therefore, we can conclude that the original size of the carbon-14 sample was 560 grams.

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Despite being buried at Stonehenge, the "Amesbury Archer" was most likely born in what is now Germany or Switzerland, according to strontium isotope analyses of his bones.

One of the most important details concerning the Archer, according to Wessex Archaeology, is that he was a native of the Alps. He most likely originated in what is now Switzerland. The peculiar Beaker pottery and artefacts that started to show up in Britain about the time of the Archer were known to archaeologists for a long time as being from Europe, providing evidence of trade and cultural ties.

The Archer, however, was more than only a dealer. He arrived with the essential metalworking abilities. The first metals were introduced to Britain at this time. He would have been among the first individuals in Britain to be able to work gold, which undoubtedly would have elevated him to a position of great status. Hence, his grave's wealth.

Hence, strontium isotope analysis report satisfactory result.

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