The activation energy, Ea, for a particular reaction is 13.6 kJ/mol. If the rate constant at 754 °C is 24.5/min, at what temperature (in °C) will the rate constant be 19.1/min? (R = 8.314 J/mol .K)

Answer:

Explanation:

You can do this by doing dimensional analysis.

The first step is to change grams to mg

1000 mg = 1 gram

So the fraction will look like this

1.03 g * 1000 mg/ 1 gram = 1030 mg (the grams cancel out)

Now move onto the volume. The volume is actually 1 cm^3. This becomes 1 cm^3 / 1000 mm^3

So the answer becomes

1030 mg / cm^3 * ( 1 cm^3/1000 mm^3) The cm^3 cancel out

1030 mg / 1000 mm^3

1.030 mg/ mm^3

The cell membrane which is more fat permeable will be present at the end of the process.

Solvent extraction is a very important method if separating mixtures. The principle of solvent extraction is based on the idea of like dissolves like. A substance dissolves in the component of the system in which it is most soluble.

If a cell extract is dissolved in a nonpolar solvent, the cell membrane which is mostly permeable to nonpolar molecules will dissolve most in the solvent.

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Answer:

A. chlorophyll

Explanation:

Plants use chlorophyll the most & I took the test.

1st and 2nd reactions are balanced reactions and the rest are not.

A balanced chemical equation is a chemical equation in which the number of atoms for each element in the reactants side is equal to the number of atoms for that same element in the products side. This means that the equation follows the law of conservation of mass, which states that the total mass of the reactants must be equal to the total mass of the products. Balancing a chemical equation involves adding coefficients (numbers in front of a chemical formula) to the reactants and/or products to make sure that the number of atoms for each element is the same on both sides.

Reaction 1: C₂H₅OH(l) + 3O₂(g) -> 2CO₂(g) + 3H₂O(g)

Reaction 2: 2Cu(s) + Asl3(s) -> 3As(s) + 3Cu(s)

Reaction 3: 2Cu(s) + O₂(g) + H₂O(l) -> CuSO₄(aq) + 2H₂(g)

Reaction 4: HNO₃(aq) -> NO(g) + 1/2O₂(g) + H₂O(g)

Reaction 5: 2KI(s) + As(s) -> K₂AsI₃(s)

Reaction 6: Ca(OH)₂(s) + Sr(NO₃)₂(aq) -> Ca(NO₃)₂(aq) + Sr(OH)₂(s)

It is important to note that the 3rd, 4th, 5th and 6th reactions are not balanced, that means that the number of atoms of each element on reactants side is not equal to the number of atoms of each element on products side.

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Answer:”the water goes through the vines and sucks it up.”

Explanation:

The water goes through the vines and sucks it up.”

Bulk properties, such as the boiling and melting temperatures of liquids, are determined by intermolecular forces.

When molecules in a liquid have enough thermal energy to overcome the forces holding them together, called intermolecular forces, bubbles of vapor are created inside the liquid. Similar to liquids, solids melt when their molecules gather sufficient heat energy to dislodge the intermolecular interactions holding them in place.

Electrostatic in nature, intermolecular forces result from the interaction of positively and negatively charged entities. Intermolecular interactions are the total of both attracting and repulsive elements, similar to covalent and ionic connections.

Therefore, The water goes through the vines and sucks it up.”

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If a new method for obtaining oil from dry oil fields is found, then we would expect to see an increase in oil production, which would lead to a leftward movement along the AD curve as demand for oil is met more easily.

However, if this increase in supply is significant enough, it could also lead to a shift of the AS curve to the right, indicating an increase in potential output. Therefore, the correct answer would be b. a movement to the left along the AD curve, and potentially a shift of the AS curve to the right. The AD curve represents the relationship between aggregate demand and the price level, while the AS curve represents the relationship between aggregate supply and the price level.
If a new method for obtaining oil from dry oil fields is found, then we will see e. the AS (Aggregate Supply) curve shift to the right. This is because the new method would increase the availability of oil, resulting in a larger supply of goods and services at the same price level, which causes the AS curve to shift to the right.

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Option C is correct. Fewer dissociations in aqueous solution compared to strong acids. When an acid is dissolved in water, it doesn't entirely ionize, making it a weak acid.

A example weak acid is ethanolic acid. When combined with water, it combines to form ethanoate and hydroxonium ions, but the back reaction is more effective than the forward one. The acid and the water are easily reformatted by the ions.

Weak acids include carbonic acid (H₂CO₃), formic acid (HCOOH), and acetic acid (CH₃COOH).

Weak acids do not give all of their hydrogen ion (H+) because they have a relatively low dissociation constant ('k' value). They don't entirely disassociate because of this.

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The Complete question is

which of the following is not a feature of weak acids? select one: at a given time, a) there is more undissociated acid than dissociated ions in aqueous solution. b) has lower acid dissociation constant/s. c) dissociates less in aqueous solution than strong acids. d) has lower pka value/s

Answer:

On earth,

g=10 m/s^2

When M=2 kg,

weight on earth=2×10

=20N

When M=3.5 kg,

weight on Earth=3.5×10

=35N

When M=5kg,

weight on Earth=5.25×10

=52.5N

Due to the variations in the sun-earth distance.

1 atom Au multiplied by 196.96655g/mol x 1mol/6.022 x 1023 atoms equals 3 x 10-22g Au  

An element's molar mass equals its atomic weight. In the instance of gold, Au, the molecular mass per mole is 196.967 grams.

Au molar mass = 196.96655 g/mol Convert ounces au to moles or moles to au gold to grams Composition percentage by ingredient Determine an organic compound's molecular weight.

As per the given details, the mass of one atom of gold (Au) is approximately 3.27 x \(10^_{-22\) grams.

We may use the molar mass of gold and Avogadro's number to calculate the mass of one gold atom (Au). The particle density of Avogadro's number, abbreviated "NA," is roughly 6.022 x \(10^{23\) particles per mole.

It is given that,

Molar mass of gold (Au) = 196.97 g/mol

Mass of one atom of gold = (Molar mass of gold) / (Avogadro's number)

Mass of one atom of gold = (196.97 g/mol) / (6.022 x \(10^{23\) particles/mol)

Mass of one atom of gold ≈ 3.27 x \(10^_{-22\) grams

Thus, the molar mass is 3.27 x \(10^_{-22\) grams.

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Answer:

which one do u want help with?

Explanation:

Keeping track of all the components within a computer system can be a daunting task, especially as technology continues to evolve.

However, there are tools available to help make the process easier. One such tool is Belarc Advisor, which can provide a detailed report on a computer's hardware and software configuration. Another option is the Sandra Utility, which can also provide detailed information on a system's components and performance. Additionally, the System Information Tool (msinfo32), described in chapter 10 of many computer manuals, can be used to generate a configuration or inventory report for a PC. Regardless of the tool used, keeping an up-to-date inventory of computer components can help with maintenance, upgrades, and troubleshooting. Remember, in order to maintain a concise inventory report, it's important to keep track of each new device or software installed on the system, and to update the inventory report accordingly. These tools help you generate a comprehensive configuration or inventory report for a PC you have access to. By using these tools, you can easily monitor and maintain the system components and ensure optimal performance. In turn, this assists in making informed decisions regarding system upgrades and troubleshooting potential issues.

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Because of our belief in the law of conservation of mass, it seems reasonable that matter cannot be created or destroyed, only changed in form or transferred from one substance to another.

This law is fundamental to our understanding of the physical world, and it has many practical applications in fields like chemistry, physics, and engineering. It helps us to predict the outcomes of chemical reactions, to balance equations, and to understand the behavior of materials under different conditions.

The law of conservation of mass is a fundamental principle that underlies much of what we know about the world around us, and it will continue to play an important role in scientific research and development for years to come.

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The molarity of the new solution if 0.50 litre of 2.0 M HCl is diluted with water to a volume of 1.0 litre is 1.0 M.

To solve this problem, the formula for molarity can be used.

Molarity = moles of solute/litres of solutionIn this case, the initial solution of HCl has a volume of 0.50 litres and a concentration of 2.0 M. Thus, the number of moles of HCl in the initial solution is: moles of HCl = concentration × volume = 2.0 M × 0.50 L = 1.0 molThe final volume of the solution is 1.0 L, therefore the new molarity of the solution can be calculated as Molarity = moles of solute/litres of solution = 1.0 mol / 1.0 L = 1.0 MTherefore, the molarity of the new solution is 1.0 M.

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Answer:1.0m

Explanation:

The electronic configuration is used to explain the orbitals of an atom and it helps to determine the physical and chemical properties of the elements. The electronic configuration of zinc is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰. The correct option is C.

The distribution of electrons in the atomic orbitals is given by the electronic configuration. It is a standard notation in which all the electrons holding atomic subshells are arranged in a sequence. Each element has a unique electronic configuration.

The electronic configuration of an element can be written in two ways, in standard notation, and in condensed form. In the case of elements with larger atomic numbers, the electronic configuration becomes lengthy in standard notation. So in such cases condensed form is generally used.

In condensed form electronic configuration of zinc is [Ar] 3d¹⁰4s² and in standard form it is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰.

Thus the correct option is C.

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Answer:

the answer is c)inches

Explanation:

inches is best for showing length

To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:

The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.

Is sucrose a good sugar to use?

Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.

Is sugar a healthy food?

Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.

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Answer:

If the student studies more the grades are likely to go up

Explanation:

Answer:pppppppppppppppppppppppppppeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrfffffffffffffffffeeeeeeeeeeeeeeeeeeeccccccccccccccccccccccccccccccttttttttttttt

Explanation:

I made a word from per its perfect :)

Answer:

Test for sulphate ion present in a given salt: Add barium chloride solution. If white precipitate is formed, presence of SO42- ion is confirmed.

Explanation:

Answer:

Its 5

Explanation:

Answer:A solar flare is an intense burst of radiation coming from the release of magnetic energy associated with sunspots. Flares are our solar 

Explanation:

Answer:

Detail is given below.

Explanation:

Given data;

Abundance of Berkmarium-95 = 70%

Abundance of Berkmarium-97 = 28%

Abundance of Berkmarium-94 = 2%

Average atomic mass closer to which isotope = ?

Solution:

1st of all we will calculate the average atomic mass of Berkmarium.

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) + (abundance of 3rd isotope × its atomic mass) / 100

Average atomic mass  = (70×95)+(28×97)+(2×94) /100

Average atomic mass =  6650 + 2716+ 188 / 100

Average atomic mass= 9554 / 100

Average atomic mass = 95.54 amu

The average atomic mass is closer to the isotope Berkmarium-95  because it is present in abundance as compared to the other two isotope. So this isotope constitute most of the part of Berkmarium.

Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

An element is a substance or material that cannot be affected by an external substance or cannot be broken down by any reaction.

Metal wire is serving as an element, it should not be easily broken or penetrated as an insulator.

Therefore, Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

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Answer:

the answer is D the dominant over powers the resecive traits

Answer:  No, the samples are not of equal masses.

Explanation:  Mass is volume X density

A:  (2ml)*(18.4g/ml) = 36.8 g

B:  (5ml(*(35.5g/ml) = 177.5 g

Ionic compounds have high melting and boiling points while covalent compounds have low melting and boiling points.

Ionic compounds are formed when metal atoms transfer electrons to non-metal atoms, resulting in a bond between positively charged ions (cations) and negatively charged ions (anions). These ions are held together by strong electrostatic forces of attraction, known as ionic bonds. Because of these strong ionic bonds, a significant amount of energy is required to overcome these forces, leading to high melting and boiling points for ionic compounds.

On the other hand, covalent compounds are formed when non-metal atoms share electrons with each other, creating covalent bonds. These bonds result in the formation of discrete molecules. Covalent compounds have weaker intermolecular forces (such as van der Waals forces or hydrogen bonding) holding the individual molecules together, as opposed to the strong ionic bonds in ionic compounds. Due to these weaker intermolecular forces, less energy is required to separate the molecules, resulting in lower melting and boiling points for covalent compounds.

In summary:
1. Ionic compounds have strong ionic bonds due to the electrostatic attraction between ions.
2. Covalent compounds have weaker intermolecular forces holding the molecules together.
3. High melting and boiling points for ionic compounds are due to the strong ionic bonds.
4. Low melting and boiling points for covalent compounds are due to the weaker intermolecular forces.

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Answer:

Only thing that should hold constant is the Density of the water

Explanation:

Since you are removing some of the water, the Mass and Volume will decrease.

Density of the water are the properties should have the same value for both of her measurements.

The density can be described as the mass per unit volume like it is the ratio between mass and volume, how much stuff an object has in a unit volume.

Density is a determining factor of matter, where it shows how tightly the matter is crammed together, the term was discovered by the Greek scientist Archimedes

The density can be calculated as the mass (m) can be divided by the volume (v)

Density = Mass/Volume

The SI unit of density is kilogram per cubic meter (kg/m3).

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The calculated value at 50 percent and 75 percent loss could be expected to be given by the equation t1/2 = ln(2)/λ . Hence t1/2 is independent of time.

Now,

 according to the given question,

   We have to calculate the values for  50% and 75% loss.

Hence,

  The difference in time is to be (300-160) = 140 sec, which means that  it is closer to 160s to that of half-life.

This is expected result.

The value of A₀ does not matter to calculate the half-life. Whatever the initial value is , it will always take the same time to get halved.

  We have,  

 N = No e– λt                                  

where

N = No/2  

t = t1/2

Now

½ = e– λ t1/2

λ t1/2 = ln (2)

hence,

 t1/2 = ln(2)/λ

Hence,

  t1/2 is independent of time.

Thus, from the above conclusion we can say that the calculated value at  50% and 75% loss would be expect to be given by t1/2 = ln(2)/λ . t1/2 is independent of time.

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Answer:

There are no oxygen

Explanation:

Hydro is used when naming hydrogen compound and oxo is used when naming oxygen compound

Explanation:

Over the next 60 seconds, the water in the beaker will try to attain thermal equilibrium by bringing the temperature in both beaker to the same level.