for ever action forces there is (n) _ forces

The concentration of AB at 21 s is 0.526 M.

The data below show the concentration of AB versus time for the following reaction:

AB(g)→A(g)+B(g)Time (s)  [AB] (M)0  0.95050  0.459100  0.302150  0.225200  0.180250  0.149300  0.128350  0.112400  0.0994450  0.0894500  0.0812

Determine the value of the rate constant:

The reaction is a first-order reaction. The concentration of AB changes as follows:

[AB]t = [AB]0e^-ktln

([AB]t/[AB]0) = -ktln

(0.459/0.950) = -k(

0.693)k = 1.88 × 10^-3 s^-1

The rate constant value is 1.88 × 10^-3 s^-1.

Predict the concentration of AB at 21 s.

The formula for a first-order reaction is given by ln

([A]t/[A]0) = -ktln([AB]t

[AB]0) = -kt[AB]t = [AB]0 e^-kt

[AB]t = (0.950) e^-(1.88 × 10^-3)(21)[AB]t = 0.526 M.

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Answer:46 moles of carbon dioxide and 12 moles of ethane.

Explanation:

46 moles of carbon dioxide and 12 moles of ethane.

A non-flammable, colorless gas, carbon dioxide is. While being far less common in the atmosphere than nitrogen and oxygen, carbon dioxide plays a crucial influence in determining the composition of the air on our planet.

Carbon dioxide, a colourless gas having a faint sharp odour and a sour taste. It is one of the most important greenhouse gases linked to global warming, but it is a minor component of Earth’s atmosphere .

It is formed in combustion of carbon-containing materials, in fermentation, and in respiration of animals and employed by plants in the photosynthesis of carbohydrates.

Therefore, 46 moles of carbon dioxide and 12 moles of ethane.

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Answer:A

Explanation:

The chemical formula depicts the atoms of the elements involved in the substance. In the given substance, ammonium carbonate ((NH₄)₂CO₃), there are 8 hydrogen atoms. Thus, option D is correct.

The chemical formula has been the representation of the elements involved in the chemical reaction with their relative proportions and symbols. It uses subscript to show the number of atoms involved along with the coefficients.

In a chemical compound like ammonium carbonate, there are various elemental atoms involved like nitrogen, hydrogen, carbon, and oxygen. There are two nitrogen, eight hydrogens (4 × 2), one carbon, and three oxygen atoms involved.

Therefore, in option D. there are eight hydrogen atoms in ammonium carbonate.

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Answer:

PbI₃ is the precipitate in the reaction

Explanation:

A precipitate is defined as a substance than appears after a chemical reaction because of the formation of an insoluble compound.

You can identify yhe precipitate in a chemical reaction because its state is solid (s). For example, in the reaction:

Pb(NO₃)₃(aq) + 3KI(aq) → PbI₃(s) + 3KNO₃(aq)

The Pb(NO₃)₃ and KI are soluble salts (Because are in (aq) medium) but the reaction produce a solid, PbI₃ and a soluble salt, KNO₃. The solid,

Answer:

Depending on the deformity it will depend on the amount of the ice that is melted,it the majority is melted that is relevant to the heated liquid melting the ice,so yes only the water formalities of the melted ice.

Answer:

Energy transfer between the particles in solids, liquids, and gases can explain how warm matter outside a cup can cause a cold liquid inside the cup to warm up.

Explanation:

Answer:

The drink in the regular cup warms up.

Explanation:

The reason why it warms up is because the cup is colder than room temperature and melts another reason why the drink in the regular cup warms up is because when we breathe out hot air is coming out soo that also makes the drink warmer.

The molarity of the solution prepared by dissolving 60.0 grams of CaCO₃ in 500 mL of solution is 1.2 M

We shall begin by calculating the mole in 60.0 grams of CaCO₃. This is shown below:

Mole = mass / molar mass

Mole of CaCO₃ = 60 / 100

Mole of CaCO₃ = 0.6 mole

Finally, we shall obtain the molarity of the solution. This is shown below:

Molarity of solution = mole / volume

Molarity of solution = 0.6 / 0.5

Molarity of solution = 1.2 M

Thus, wen conclude that the molarity of the solution is 1.2 M

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Answer:

5.12x10^23 atoms

Explanation:

To find atoms, you need to use Avogadro's number. Here is the equation:

0.085 mol x 6.022x10^23 atoms = 5.12x10^22 atoms of titanium

Keep in mind that units need to cancel and make sure to double check those sig figs!

Greenhouse gases are nonuniformly mixed pollutants. They do not mix evenly throughout the atmosphere but tend to concentrate in certain areas or regions.

The distribution of greenhouse gases is influenced by various factors such as emission sources, atmospheric circulation patterns, and local meteorological conditions. This uneven distribution contributes to the localized impact of greenhouse gases on climate change and global warming. A greenhouse gas is a gas that produces the greenhouse effect by both absorbing and emitting radiant energy at thermal infrared wavelengths. The five main greenhouse gases in the atmosphere of Earth are ozone, carbon dioxide, methane, and water vapour.

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Answer:

Decomposition reactions require an input of some form of energy. For example, under the influence of an electric field, water breaks down to give hydrogen and oxygen. In the presence of sunlight, hydrogen peroxide decomposes into oxygen and water.

Answer:

²³⁸₉₂U →  ²³⁴₉₀Th  + ⁴₂He

Explanation:

Nuclei higher than Bi - 92 naturally are radioactive.

In a transmutation reaction, a new element is produced from an existing one due to radioactivity.

Nuclear fission is the radioactive process by which a heavy nucleus spontaneously decays into lighter ones with the release of a large amount of energy.

 One example is the transmutation of uranium into thorium;

         ²³⁸₉₂U →  ²³⁴₉₀Th  + ⁴₂He

Answer:

the cheta

Explanation:

kinetic means movement

Solubility rules refer to a set of guidelines for predicting the solubility of different ionic compounds in water. According to solubility rules, calcium carbonate (CaCO3) is insoluble in water, so it is the ionic compound that is insoluble in water. The other ionic compounds are soluble in water.

Solubility Rules:Solubility rules refer to a set of guidelines used to predict the solubility of different ionic compounds in water. The rules can be used to determine which ionic compounds will dissolve in water and which ones will not. The solubility of ionic compounds is determined by the strength of the attractive forces between the ions in the compound and the water molecules.Solubility rules:

If an ionic compound contains the following ions, it will be soluble in water:

Sodium (Na+), potassium (K+), ammonium (NH4+), and nitrate (NO3-)If an ionic compound contains the following ions, it will be slightly soluble in water:

Calcium (Ca2+), strontium (Sr2+), and barium (Ba2+)If an ionic compound contains the following ions, it will be insoluble in water:

Carbonate (CO32-), phosphate (PO43-), hydroxide (OH-), and sulfide (S2-)

Therefore, the ionic compound that is insoluble in water is CaCO3 (Calcium Carbonate) as it contains carbonate ions.

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Using prefixes before the name of each element, the number of atoms of each element present in the molecular is indicated.

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Answer:

1. The balanced equation for the thermal decomposition of potassium chlorate is:

2KClO3(s) → 2KCl(s) + 3O2(g)

2. Using the stoichiometry of the balanced equation, we can see that 2 moles of KClO3 produce 3 moles of O2. Therefore, 9.50 moles of O2 are produced by (9.50 moles O2 / 3 moles O2 per 2 moles KClO3) = 6.33 moles KClO3. The heat produced by the decomposition of 6.33 moles of KClO3 is:

q = nΔHrxn = (6.33 mol)(-89.4 kJ/mol) = -566 kJ

3. To solve this problem, we need to use the ideal gas law to calculate the volume of O2 produced. First, we convert 307 g of KClO3 to moles:

n = m/M = 307 g / 122.55 g/mol = 2.50 mol KClO3

Using the stoichiometry of the balanced equation, we can see that 2 moles of KClO3 produce 3 moles of O2. Therefore, 2.50 moles of KClO3 produce (3/2 x 2.50) = 3.75 moles of O2. Now we can use the ideal gas law to calculate the volume of O2 produced:

PV = nRT

V = nRT/P = (3.75 mol)(0.08206 L·atm/mol·K)(305.15 K)/(723 torr/760 torr/atm) = 8.59 L

4. The heat produced by the decomposition of 307 g of KClO3 is:

n = m/M = 307 g / 122.55 g/mol = 2.50 mol KClO3

q = nΔHrxn = (2.50 mol)(-89.4 kJ/mol) = -223 kJ

5. We can use the equation q = mcΔT to calculate the final temperature of the water. First, we need to calculate the heat capacity of the water:

C = mc = (74.2 L)(1.00 kg/L)(4.18 J/g·K) = 310 kJ/K

Now

Explanation:

Answer:

1255200J

Explanation:

1 cal = 4.184 J

1kcal = 4184 J

thus, 300 kcal= 4184 × 300

= 1255200J

= 1255.2 kJ

= 1.2552 MJ

Answer:

a

Explanation:

Answer:

C. The product must solve the problem for which it was designed.

Explanation:

Technological design is the study, development and application of technological process with the intent of designing a product to solve required problem.The process could be based on the use of a computer.

Generally, technological process and development always tend to design a problem solver product. Through this process, more new technologies are produced.

Therefore in technological process, the product must solve the problem for which it was designed.

Answer:

C) The product must solve the problem for which it was designed.

During alpha decay, atomic nuclei emit alpha particles, which are helium-4 nuclei composed of two protons and two neutrons. So, during alpha decay, the total mass of the reactants is equal to the mass of the main nucleus before decay.

In beta-plus decay, also called positron emission, protons in the nucleus are converted into neutrons, and positrons and neutrinos are emitted. Since the mass of a positron is very small compared to the mass of a proton or neutron, the total mass of the reactants in beta and decay is very close to the mass of the parent nucleus before decay.

Beta -mm is also known as electrons or negatively, and the nucleus neutron is transformed into protons and electrons and is produced by antizatinrino. Because the electronic mass is very small compared to the mass of protons or neutrons, the total mass of the minimum minimum minimum reagent is very close to the body of the body.

Generally, the total mass of the reactants in a fission process is very close to the mass of the parent nucleus before fission, because the mass of the particles released during fission is much smaller than the mass of the parent nucleus. However, due to the conservation of energy and momentum, there can be slight differences in mass between the reactants and the decay products, called mass defects.

This mass defect is converted into energy according to Einstein's famous equation E = mc². where E is the energy released, m is the mass defect, and c is the speed of light.

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Answer:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out

Explanation:

1. Glyceraldehyde 3-phosphate enters the Krebs cycle as part of the glycolysis pathway.

2.The complete oxidation of glycerol results in the production of 15 ATP molecules. This includes the ATP generated from glycolysis, the Krebs cycle, and the electron transport chain.

3.This is because each round of beta-oxidation of a 6-carbon fatty acid generates 4 ATP molecules (one FADH2 yields 2 ATP, and one NADH yields 3 ATP), and two rounds of beta-oxidation are required for complete oxidation of a 6-carbon fatty acid.

1. Glycerol is a three-carbon molecule with the chemical formula C3H8O3. It can enter the Krebs cycle after undergoing several reactions. Here are the reactions involved:

Glycerol → Glycerol 3-phosphate

Glycerol 3-phosphate → Dihydroxyacetone phosphate

Dihydroxyacetone phosphate → Glyceraldehyde 3-phosphate

Glyceraldehyde 3-phosphate enters the Krebs cycle as part of the glycolysis pathway.

2. The complete oxidation of glycerol results in the production of 15 ATP molecules. This includes the ATP generated from glycolysis, the Krebs cycle, and the electron transport chain.

3. The complete oxidation of a fully saturated 6-carbon fatty acid (such as stearic acid) to CO2 and H2O produces a total of 146 ATP molecules. This is because each round of beta-oxidation of a 6-carbon fatty acid generates 4 ATP molecules (one FADH2 yields 2 ATP, and one NADH yields 3 ATP), and two rounds of beta-oxidation are required for complete oxidation of a 6-carbon fatty acid.

In summary, the net ATP produced from the complete oxidation of glycerol to CO2 and H2O is 15 ATP molecules. For a fully saturated 6-carbon fatty acid, the net ATP produced from its complete oxidation is 146 ATP molecules. These calculations take into account the ATP generated from glycolysis, the Krebs cycle, and the electron transport chain.

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1. Glycerol undergoes reactions to enter the Krebs cycle in the glycolysis pathway.

2. The complete oxidation of glycerol results in the production of 15 ATP molecules.

3. The net ATP produced from the complete oxidation of a fully saturated 6-carbon fatty acid is 146 ATP molecules.

1. Glycerol,   a three-carbon molecule,undergoes a series of reactions to enter the Krebs cycle as part of glycolysis, contributing toATP production. This metabolic pathway allows glycerol to be utilized for energy generation in cells.

2. The complete   oxidation of glycerol, encompassing glycolysis, the Krebs cycle, and the electron transport chain,results in the production of 15 ATP molecules. These processes efficiently extract energy from glycerol and convert it into ATP, the primary   energy currency of cells.

3. The complete   oxidation of a fully saturated 6-carbon fatty acid, such as stearic acid, involves beta-oxidation,yielding a net of 146 ATP molecules. This   energy production arises from the successive breakdown of fatty acid molecules,generating ATP through various steps, including the electron transport chain. The oxidation of fatty acids plays a crucial role in meeting cellular energy demands.

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The number of moles of ethanol after equilibrium is reached the second time is 11 moles.

Initial moles of ethene equal 34 and initial moles of water vapor equal 15

100 L is the volume of the container. To express the chemical equation for ethanol formation

CH₂ + H₂O ⇄ CH₃CH₂OH ----- ( 1 )

at Equilibrium : 34-x 15-x x

Given that :

Equilibrium moles of ethene = 24

Eq moles of water vapor = 5

solve for x

x = 10

the expression of Kc for equation 1

The concentration of [ H₂O ] = 5 / 10 = 0.05 M

Kc = 0.1/ 0.24 × 0.05

= 8.3

Assuming that equilibrium is restored after the addition of 11 moles of ethene

CH₂ + H₂O ⇄ CH₃CH₂OH

At equilibrium : 35-x 5-x 10+x

[ H₂O ] = ( 5-x ) / 100

solve for x using the expression for Kc

x = 50.9 , 1.1

we neglect the value of 50.9

therefore x = 1.1

moles of ethanol = 10 + 1.1 = 11

So, we can deduce that there are 10 + 1.1 = 11 moles of ethanol when equilibrium is attained a second time.

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The complete question is

While ethanol (CH3CH2OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene (CH2CH2) with water vapor at elevated temperatures. A chemical engineer studying this reaction fills a 100. L tank at 21. °C with 34. mol of ethylene gas and 15. mol of water vapor. He then raises the temperature considerably, and when the mixture has come to equilibrium determines that it contains 24. mol of ethylene gas and 5.0 mol of water vapor. The engineer then adds another 11. mol of ethylene, and allows the mixture to come to equilibrium again. Calculate the moles of ethanol after equilibrium is reached the second time. Round your answer to 2 significant digits.

Answer:

220g of CO2

Explanation:

Step 1:

The balanced equation for the reaction.

2C5H11OH + 15O2 —> 10CO2 + 12H2O

Step 2:

Determination of the number of mole of CO2 produced by burning 1 mole of C5H11OH.

From the balanced equation above,

2 moles of C5H11OH produced 10 moles CO2.

Therefore, 1 mole of C5H11OH will produce = (1 x 10)/2 = 5 moles of CO2.

Therefore, 5 moles of CO2 is produced from the reaction.

Step 3:

Conversion of 5 moles of CO2 to grams.

Molar mass of CO2 = 12 + (2x16) = 44g/mol

Number of mole of CO2 = 5 moles

Mass of CO2 =...?

Mass = mole x molar mass

Mass of CO2 = 5 x 44

Mass of CO2 = 220g.

Therefore, 220g of CO2 were obtained from the reaction.

To find the number of molecules we must apply for Avogadro's number. This number tells us that in one mole of any substance there are 6.022x10^23 molecules. So the first thing we will do is find the moles contained in 200 grams of C6H12O6 (Glucose).

The molar mass of glucose is 180.06g/mol. So, the moles of glucose will be:

Now, we apply for Avogadro's number. So, the molecules of glucose will be:

Answer: In 200 grams of C6H12O6 there are 6.68x10^23 molecules

10.6 atm is the pressure of 2 moles of carbon dioxide at 70 degrees Celsius contained in a 4000 mL container.

The physical force applied to an object is referred to as pressure. Per unit area, a perpendicular force is delivered over the surface of the objects. F/A (Force every unit area) is the fundamental formula for pressure. Pressure is measured in Pascals (Pa).

Absolute, atmospheric, differential, as well as gauge pressures are different types of pressure. 'Pressure' is the term used to describe the thrust (force) applied to a surface every unit area. The proportion of the force can the surface area (more than where the pressure is acting) is another way to describe it.

P×V = n×R×T    

P× 4000 = 2×0.821×330

P = 10.6 atm

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These three options are correct for assisting crystal formation- 1. Scrape the inside of the Erlenmeyer flask with a glass rod below the surface of the solvent. 2. Nucleate the crystals with a scrap of paper. 3. Include some crystals of the compound being crystallized.

Crystallization is the process by which a solid material forms a structured arrangement of its particles, producing a highly ordered and frequently repeating pattern. The formation of solid crystals such as salt, sugar, and diamonds exemplifies this. When the molecules of a solid tend to organize themselves into a more ordered pattern, this is referred to as crystallization.

Seeding is the process of adding a scrap of paper to nucleate the crystals. Seeding entails placing a small crystal in a container of supersaturated solution, which serves as a nucleus for other crystals to form around. This process accelerates crystal growth and can be used to produce larger, more consistent crystals. It can also be used to make crystals of various shapes and sizes. The addition of a scrap of paper causes the solution to form around it, promoting crystal formation.

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A KMnO₄ test will detect the presence of alcohols. Thus option a is the correct choice.

Potassium permanganate can be used to quantitatively determine the total oxidizable organic material in an aqueous sample. Because ketones do not have that particular hydrogen atom, they are resistant to oxidation, and only very strong oxidizing agents like potassium manganate (VII) solution (potassium permanganate solution) oxidize ketones. However, they do it in a destructive way, breaking carbon-carbon bonds.Under controlled conditions, KMnO₄  oxidizes primary alcohols to carboxylic acids very efficiently.

Therefore, option a is the correct choice.

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