The substance that works as a reactant in an enzyme catalyzed reaction is called the

Final answer:

To find the average atomic mass of weapons-grade uranium, calculate the weighted average based on the percentages of each isotope: 80% of 235.044 amu (uranium-235) and 20% of 238.051 amu (uranium-238), yielding an average atomic mass of 235.6454 amu.

Explanation:

To calculate the average atomic mass of weapons-grade uranium, which consists of 80% uranium-235 and 20% uranium-238, you multiply the mass of each isotope by its relative percentage (expressed as a decimal) and then sum the results. The atomic mass unit (amu) for uranium-235 is 235.044 and for uranium-238 is 238.051.

The average atomic mass can be calculated as follows:

(80% of uranium-235) 80/100 × 235.044 amu = 188.0352 amu

(20% of uranium-238) 20/100 × 238.051 amu = 47.6102 amu

Add these values together: 188.0352 amu + 47.6102 amu = 235.6454 amu

Therefore, the average atomic mass of weapons-grade uranium is 235.6454 amu.

The partial pressure of carbon dioxide (PCO2) in systemic arterial blood is approximately 40 mm Hg.

The partial pressure of a gas in a mixture, like blood, is a measure of the pressure that gas exerts independently, assuming ideal behavior. In the context of blood gases, PCO2 is a crucial parameter reflecting the concentration of dissolved carbon dioxide in the bloodstream.

Normal systemic arterial blood PCO2 levels typically range from 35 to 45 mm Hg. This range is maintained within a very narrow margin as part of the body's acid-base balance, regulated by the respiratory system and the kidneys.

A PCO2 value significantly higher than 45 mm Hg can indicate respiratory acidosis, a condition where the blood becomes too acidic due to excess carbon dioxide. On the other hand, a PCO2 value below 35 mm Hg may indicate respiratory alkalosis, where the blood becomes too alkaline due to insufficient carbon dioxide.

Therefore, a PCO2 of 100 mm Hg, 104 mm Hg, or 45 mm Hg does not represent the typical PCO2 in systemic arterial blood and would suggest an abnormal condition. A PCO2 of 40 mm Hg is within the normal range for systemic arterial blood PCO2.

For more such question on  partial pressure visit:

https://brainly.com/question/19813237

#SPJ6

Substances with weaker intermolecular forces evaporate faster due to higher vapor pressure and volatility.

Substances with weaker intermolecular forces evaporate faster than substances with stronger intermolecular forces.

Weak intermolecular forces lead to a higher vapor pressure and increased volatility in substances, causing them to evaporate at a faster rate.

Answer. A. 183

B. 142

C. 0.03

D.11.3

E.24.5

Explanation:

Answer: ΔH°f is not zero

Explanation:

the change in enthalpy formation is zero when elements are pure.when they are zero it is mainly  because they are most basic,where you cannot form an element with an element.

3 would be the answer to your question...

to answer your second question, it is D

The number of molecules present in 2.10 moles of CO₂ is 1.264×10²⁴ molecules. Therefore, option D is correct.

The mole is the amount of substance in a system that contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is "mol".

In the International System of Units, the mole (symbol mol) is the unit of substance amount (SI). The amount of substance is a measurement of how many elementary entities of a given substance are present in an object.

From Avogadro's hypothesis as follows;

1 mole of any substance = 6.023×10²³ molecules.

This implies that:

1 mole of CO₂ = 6.023×10²³ molecules

With the above information, we can obtain the number of molecules in 2.10 moles of CO₂. This can be obtained as given below:

1 mole of CO₂ = 6.023×10²³ molecules

Then,

2.10 moles of CO₂ = 2.10 × 6.02×10²³

2.10 moles of CO₂ = 1.264×10²⁴ molecules

Thus, the number of molecules present in 2.10 moles of CO₂ is 1.264×10²⁴ molecules., option D is correct.

To learn more about the mole, follow the link;

https://brainly.com/question/26416088

#SPJ6

The correct answer is 2

Answer:

cfcl2

Explanation:edg

The answer is 6mm

You're welcome!

(1) The nonliving material with uniform structure has been Mineral. Thus, option A is correct.

(2) The rock formed by the cooling of volcanic eruption and lava has been the igneous rock.

(3) A sedimentary rock can become a metamorphic rock by exposure to high heat and great pressure.

The rock and minerals are the nonliving compositions of the nature that are rich source of many fuels, and natural gases.

The varying form of rocks are present in the nature, and are converted from one form to another.

(1) Rocks have been defined as the material with nonuniform structure and composition. Rocks are the rich mineral source. They are the uniform structure throughout the material.

Thus, the nonliving material with uniform structure has been Mineral. Thus, option A is correct.

(2) The rock has been converted from one form to another in the rock cycle. The sedimentary rocks are formed by the deposits from the sea. The breakdown of sedimentary rock result in the metamorphic rocks.

The metamorphic rocks are deep inside the crust.

The rock formed by the cooling of volcanic eruption and lava has been the igneous rock.

(3) The sedimentary rocks are converted to the metamorphic rocks by the application of high heat and pressure to the sediments.

Learn more about rock cycle, here:

https://brainly.com/question/15619429

Answer:

There will many opportunities in the field of renewable energy science and engineering. It is an exciting field, with a lot of variety and room for new ideas.

Explanation:

Answer:Sample Response:

There will many opportunities in the field of renewable energy science and engineering. It is an exciting field, with a lot of variety and room for new ideas.

Explanation:

What did you include in your response? Check all that apply.

opportunities

exciting field

variety

room for new ideas

Answer: chromatography

Explanation:

Chromatography : It is a type of separation process in which the liquid or gas is separated into components at different rate. The principle of chromatography is that the substance of molecule are distributed between the liquid phases. It involves a stationary and a mobile phase.  Hence,chromatography is a laboratory technique that is used to  separate plant pigments.

Distillation : It is a type of separation process in which the mixture of liquid separated or evaporated at different temperatures.

Fractional distillation is separation of a liquid mixture into fractions which differ in boiling points by means of distillation by use of a fractionating column.

Filtration : It is a type of mechanical separation process in which the solid is separated from the liquid through the filter paper.

The kinetic molecular theory describes the solid state as composed of tightly packed particles that vibrate about fixed positions and are held together by strong intermolecular forces. This leads to solids having a defined shape and volume, and being less compressible compared to liquids and gases.

Solid State According to the Kinetic Molecular Theory

The kinetic molecular theory is a framework used to describe the behavior of matter in different states - solid, liquid, and gas. According to this theory, the solid state of matter is characterized by particles that are tightly packed together, often in a regular pattern. These particles have very little movement, primarily vibrating about fixed positions.

In the context of the kinetic molecular theory, intermolecular attractions are significant in the solid state, holding the particles closely to one another. This close packing and the limited movement of particles correspond to the low kinetic energy compared to gases. These properties explain why solids have a definite shape and volume, and why they are not easily compressible.

Focusing on the particles' behavior in solids, we understand that the restricted motion due to strong intermolecular forces results in the characteristic rigidity and structural stability of the solid state. Although the particles are in motion, it is minimal and does not allow for the particles to move past each other, unlike in liquids or gases.