How many molecules of acetyl-CoA result from complete catabolism of the following compounds?

The formula mass of a compound with 2 carbon atoms and 3 oxygen atoms is 72amu.

The term formula mass of a substance is defined as the sum of the average atomic masses of each atom represented in the chemical formula and is shown in atomic mass units.

The formula mass of a covalent compound is also called the molecular mass.

Therefore, there are 2 carbon atoms and 3 oxygen atoms in the given compound, so, its formula will be C₂O₃.

Then, the formula mass can be given as follows:

C₂O₃ = 2 × 12 + 3 × 16

= 72amu

Thus, the formula mass of a compound with 2 carbon atoms and 3 oxygen atoms is 72amu.

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Answer:72.019

Explanation:

Darwinism holds that natural selection, inheritance of variations, survival of the fittest, and struggle for existence are the proper order of events leading to the genesis of species. According to Darwin, nature is characterized by a constant "battle for survival" in which only the strongest will survive.

Natural selection, as defined by Charles Darwin, is the differential survival and reproduction of individuals as a result of phenotypic differences. The shift in the heritable characteristics of organisms is a crucial mechanism of evolution.

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Answer:

D) ionic radius of Br">atomic radius of br

The approximate amount of the 0.9% sterile sodium chloride solution that the individual should receive is around 1590.91 milliliters.

To calculate the amount of sodium chloride solution to be administered, we need to convert the weight of the person from pounds to kilograms. Since 1 kilogram is equal to 2.2046 pounds, the weight of the person in kilograms is 132 lb / 2.2046 = 59.874 kg.

Next, we calculate the amount of sodium chloride required using the given dosage of 2 mEq per kilogram of body weight. Multiplying the weight in kilograms by the dosage gives us 59.874 kg * 2 mEq/kg = 119.748 mEq.

To convert milliequivalents (mEq) to milligrams (mg), we need to know the molecular weight (M.W.) of sodium chloride, which is given as 58.5 g/mol. 1 mEq of sodium chloride is equal to 58.5 mg.

Finally, we calculate the volume of the 0.9% sterile solution of sodium chloride needed by dividing the amount of sodium chloride required by the concentration of the solution. The concentration of 0.9% means there are 0.9 grams of sodium chloride in 100 milliliters of solution.

Using the formula: volume (mL) = (amount of sodium chloride required (mg) / concentration (%)) * 100, we get volume = (119.748 mg / 0.9%) * 100 = 13,305.33 mL.

Rounding to the nearest milliliter, the person should receive approximately 1590.91 milliliters of the 0.9% sterile solution of sodium chloride.

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The noble gas, Helium has only two electrons with the electronic configuration as 1s2. Hence, it does not have a complete octet. and thus, it doesn't follow the octet rule.

An octet is a set of eight. Atoms of each of the noble gases (except helium) have eight electrons in their highest occupied energy levels and the general electron configuration of ns2np6.

It is important to conduct thorough characterization and analysis of the new polymorphs, including precise measurement of their melting points, to confirm and understand the reasons behind the differences compared to the published literature values.

There are a few possible explanations for polymorphs of a substance having higher melting points than the published literature values:

1. Impurities: The presence of impurities or contaminants can affect the melting point of a substance. If the samples used for the published literature values contained impurities or were not pure, it could result in lower reported melting points. In contrast, if the new polymorph samples are highly pure, they may exhibit higher melting points.

2. Sample preparation: The method of sample preparation can influence the properties of a substance, including its melting point. If the samples used for the published literature values were prepared differently from the new polymorph samples, it could lead to variations in the observed melting points.

3. Measurement technique: The technique used to measure the melting point can impact the recorded values. Different experimental setups, equipment, and measurement protocols can yield slightly different results. If the new polymorph samples were analyzed using a different or more accurate measurement technique, it could result in higher reported melting points.

4. Crystal structure: Polymorphs are different crystal structures of the same substance. The arrangement of atoms or molecules in the crystal lattice can influence its physical properties, including melting point. It is possible that the new polymorphs have unique crystal structures that result in higher melting points compared to the known literature values.

5. Thermodynamic factors: The thermodynamic stability of different polymorphs can vary. It is possible that the newly discovered polymorphs are more thermodynamically stable than the previously known ones. This increased stability could lead to higher melting points for the new polymorphs.

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Answer:

A and D.

Explanation:

A shows that people continued to use more and more fossil fuels until around the middle of the time period where the cost of certain fossil fuels doubled. This helps show that less people were willing to pay this price and would start looking for other means of fuel. This leeads to D.

As people looked for other fuel sources renewable energy uses reached a high in 2012 which was after the cost of certain fuels had doubled.

The appropriate conversion factor is : b. 1mol C / 1mol CH₄.

A conversion factor is a number used to convert one unit of measurement to another. A mole is a unit of measurement used to express the amount of a substance in chemistry. It is defined as the amount of a substance that contains the same number of particles (such as atoms or molecules) as there are in 12 grams of carbon-12. The number of particles in one mole is known as Avogadro's number, which is approximately 6.022 x 10^23.

We need to change from moles of CH₄ to moles of C, and we are aware that each mole of CH₄ contains one mole of C. In order to convert the quantity of moles of CH₄ to moles of C, we can utilise the conversion factor of 1mol C / 1mol CH₄.

This conversion factor allows us to determine how many moles of carbon are contained in 1.75 moles of CH₄ as follows:

1.75 mol CH₄ * 1 mol C / 1 mol CH₄ = 1.75 mol C

Hence, 1.75 moles of C are included in 1.75 moles of CH₄.

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The statement that claims "The half-life is the time it takes for ALL of the original amount of an unstable isotope to decay into more stable forms" is false.

The half-life of a radioactive isotope refers to the time required for half of the original quantity of the isotope to undergo radioactive decay and transform into more stable forms. It is a fundamental concept in nuclear physics and has important implications in various fields such as radiometric dating and medical imaging.

Radioactive isotopes are inherently unstable and undergo spontaneous decay, transforming into different isotopes or elements over time. The rate of decay is governed by the unique half-life characteristic of each radioactive isotope. The half-life represents the time it takes for half of the radioactive nuclei in a sample to decay.

For example, suppose we have a sample containing a radioactive isotope with a half-life of 10 years. After the first 10 years, half of the original isotope will have decayed, and the remaining half will remain. After another 10 years (20 years in total), half of that remaining half will have decayed, leaving only one-fourth of the original isotope. This pattern continues, with the amount of the original isotope decreasing by half with each successive half-life.

It is important to note that even after multiple half-lives, a small fraction of the original isotope may still remain. However, as time goes on and more half-lives pass, the amount of the original isotope becomes increasingly negligible compared to the more stable forms it decays into.

Therefore, the correct understanding is that the half-life is the time it takes for half of the original amount of an unstable isotope to decay, not for all of it to decay into more stable forms.

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The statements that are true about subatomic particles are,

Electrons are much lighter than neutrons.

Neutrons have no charge.

Electrons is negatively charge so it is attracted to positively charge particle.

Generally an Atom is made up of electron, proton and neutron. Electron is negatively charge and proton is positively charge particle, while nuetron is neutral charge particle.

Proton and neutron are called nucleon because these are present in the nucleus. Electron is lighter particle than proton and neutron.

The true statements are given below

Electrons are much lighter than neutrons.

Neutron have no charge.  

Electrons is negatively charge so it is attracted to positively charge particle.

Mass of proton and neutron are approximately same. All of the mass present in an atom is concentrated in nucleus.

The false statement is given below.

Protons have twice the mass of neutrons.

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The fresh is not recommended for the gelatin desert but we can add the canned pineapple if it has roasted to a high temperature.

The directions for a gelatin (protein) dessert say not to add fresh pineapple. However, canned pineapple where pineapple is heated to high temperatures can be added. because if we add the fresh pineapple to as gelatin then bromelain hydrolyzes the peptide bond in the collagen. gelatin is made up from the collagen , which is a form of protein.

Thus canned food can be cooked at high temperature that destroy the harmful microorganism. this will inactivates the enzyme.

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As there are 1,000,000 kg in 1 Mg, we must multiply by 1,000,000 to convert from Mg (megagrams) to kilogrammes. Therefore:

8.12 × 107 kg or 81.2 Mg is equal to 81.2 x 1,000,000 kg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

, I apologize for my mistake in the previous response. The conversion from Mg to kg is indeed done by multiplying by 1,000,000. Thank you for providing the correct calculation and explanation. The answer is:

81.2 Mg = 81.2 x 1,000,000 kg = 8.12 x 10^7 kg

Expressed in scientific notation, there are 8.12 x 10^7 kilograms in 81.2 Mg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.

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Answer:

so I got it wrong the first time but you should pick two points on the line such as 4,3 and 9,5. Then use the equation y^2 - y^1/ x^2 - X^1. You would get 2/5 which is D.

Explanation

During the melting of ice, the ice absorbs heat energy and the molecules move further away; option A.

Melting refers to the process by which a solid substance changes to liquid when heat is added to it.

The melting of pure substances occur at a definite temperature called the melting point of that substance.

The molecules of a substance move further apart when they melt as the attractive forces between them are weakened.

The melting of ice is an example of the process of melting.

During the melting of ice, the ice absorbs heat energy and the molecules move further away.

In conclusion, melting of solids occur when heat is added to the solid.

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Answer:

41

Explanation:

mate u literally just have to substitute the values into ur formula. u would then get 20 times 2.5 which is 41

Answer:

920mL of water

Explanation:

To solve this question we need to find as first the mass that must be added of water to make 1000mL of syrup using specific gravity. Thus, we can know the volume of water that mus be added:

1.31 is 1.31g/mL. In 1000mL = 1310g/1000mL. As the mass added of sucrose is 850g, the mass of water = Volume of water is:

1310g - 850g = 460g of water = 460mL to make 1L, To make 2L the amount of water that must be added is:

460mL * 2  =

The number of milliliters of water are used to prepare two liters of syrup is 920 mL of water.

Given that,

Based on the above information, the calculation is as follows:

1.31 is = 1.31g/mL.

Now

In 1000mL = \(1310g \div 1000mL\).

Now if the mass is added so the mass of water should be equivalent to the volume of the water.

= 1310g - 850g

= 460g of water

Now

= 460mL for 1L,

To make 2L the water should be  

= 460mL (2)

= 920mL of water

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Answer:

in number 7 its Gas because the molecules are afloat and/or moving rapidly.

Explanation:

The process in which the reactants get converted into products is defined as the chemical reaction. The nature and identity of products will be totally different from the reactants.

The replacement reaction also called the displacement reaction in which an atom or groups of atoms are displaced by another atom in a molecule. In a single replacement reaction one element is replaced by other in the compound.

The reaction between chlorine and sodium bromide to form sodium chloride and bromine is an example for replacement reaction.

Cl₂ (aq) + 2NaBr (aq) → 2NaCl (aq) + Br₂ (aq)

Here 'Cl' is more reactive than 'Br', so it replaces 'Br' in NaCl.

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Answer:

B

Explanation:

Cause metamorphic rock is formed by heat pressure overtime

The rock collected by Roger if it is metamorphic rock it is formed by pressure and heat over time. Hence, image image B represents a metamorphic rock.

Metamorphic rocks have undergone significant alteration from their igneous, sedimentary, or previous metamorphic forms. When rocks are exposed to extreme temperatures, high pressures, hot mineral-rich fluids, or, more frequently, some combination of these conditions, metamorphic rocks are created.

These kinds of conditions can be found deep inside the Earth or where tectonic plates collide. The process of metamorphism changes the rocks into denser, more compact rocks rather than melting them.

Either by the rearranging of mineral constituents or through chemical reactions with fluids that enter the rocks, new minerals are produced. Even rocks that have already undergone metamorphosis might undergo changes due to pressure or temperature. Many metamorphic rocks are bent, smeared out, and compressed.

Therefore, option B is correct.

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Answer:

84,007 g/mol

Explanation:

Molar mass of NazCO3 which is Sodium Bicarbonate (NaHCO₃) is 84,007 g/mol

The gauge pressure of the oxygen in the tank in atmospheres is 11.46 atm.

The gauge pressure is given as the pressure relative to the ambient atmospheric pressure. The gauge pressure can be calculated as:

Gauge pressure = System pressure - Atmospheric pressure

The system pressure of the 35-liter tank with 18.3 moles oxygen is given as:

Pressure = moles * Rydberg constant * Temperature / Volume

Pressure = 18.3 moles * 0.08 L.atm.mol⁻¹.K⁻¹ * 298 K / 35 L

Pressure = 12.46 atm

The standard pressure is given as 1 atm.

Thus, the gauge pressure of the oxygen in the tank can be:

Gauge pressure = System pressure - Atmospheric pressure

Gauge pressure = 12.46 atm - 1 atm

Gauge pressure = 11.46 atm

The gauge pressure of the oxygen in the tank in atmospheres is 11.46 atm.

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Answer:

The answer is 8.31 atm.

Explanation:

Ideal Gas Law = PV = nRT
(where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.)

First, convert the temperature from Celsius to Kelvin:

25°C + 273.15 = 298.15 K

Next, plug in the known values into the Ideal Gas Law equation:

P * 35.0 L = 18.3 moles * 8.31 J/mol*K * 298.15 K

Finally, solve for P:

P = (18.3 moles * 8.31 J/mol*K * 298.15 K) / 35.0 L

The pressure is in units of joules per liter. To convert it to atmospheres, divide by the atmospheric pressure in joules per liter:

1 atm = 101,325 Pa = 101,325 J/m^3 = 101.325 kPa

P (in atm) = (18.3 moles * 8.31 J/mol*K * 298.15 K) / (35.0 L * 101.325 kPa)

= 8.31 atm

Answer:

The answer is carbon and silicon

Explanation:

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Answer:

amount of compost is the first answer

The longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography because the diffusion coefficient is much more larger in gas than the liquid.

Chromatography is a type of laboratory technique which is performed for the separation of the mixture of different elements into its components. The mixture firstly dissolved in a fluid solvent which is known as the mobile phase, that carries it through a system at which the material called the stationary phase is fixed.

Not all molecules present in the same solute show same behavior. Different molecules show different behaviour. This is due to mainly three reason which arr given as below:

The molecules of solute moves in different direction in the stationary phase, it is due to porosity of the particle that form it.

Thus, we concluded that the longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography because the diffusion coefficient is much more larger in gas than the liquid.

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Answer:

Explanation:

Synthesis

Partial hydrogenation of fats and oils is a chemical process in which hydrogen molecules are added to unsaturated fatty acids. This process converts unsaturated fats, which are typically liquid at room temperature, into semi-solid or solid fats, also known as partially hydrogenated fats.

During partial hydrogenation, some of the unsaturated fatty acids are transformed into trans fatty acids, which are particularly unhealthy. Trans fats have been linked to increased levels of low-density lipoprotein (LDL) cholesterol, or "bad" cholesterol, and decreased levels of high-density lipoprotein (HDL) cholesterol, or "good" cholesterol, in the body.

An imbalance between LDL and HDL cholesterol can contribute to plaque formation in the arteries. Plaque is a buildup of fatty deposits, cholesterol, and other substances that can narrow the arteries and restrict blood flow. Over time, this can lead to heart disease, as the heart must work harder to pump blood through the narrowed arteries, increasing the risk of heart attack or stroke.

In summary, partial hydrogenation of fats and oils can create trans fats, which negatively impact cholesterol levels and contribute to plaque formation in the arteries, ultimately increasing the risk of heart disease.

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Answer: The answer is true.

Explanation: Avogadro's number is a mole, which concludes that this statement is true.

Answer:

precipitation goes to the left box

condensation goes to the bottom box

evaporation goes in the top right box

Explanation:

hope this is helpfull

can you relate to these pictures