You are given 10. 34 grams of C7H14O7. How many moles of the compound do you have?

The energy of the photon with a frequency of 3.6×10¹⁵ Hz is 2.4×10¯¹⁸ J

Energy is defined as the ability to do work.

The energy of a photon is related to it's frequency according to the following equation:

Energy (E) = Planck's constant (h) × frequency (f)

E = hf

With the above formula, we can obtain the energy of the photon.

E = hf

E = 6.63×10¯³⁴ × 3.6×10¹⁵

E = 2.4×10¯¹⁸ J

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The energy of the photon is 2.4 × 10⁻¹⁸ J. The correct option is the last option 2. 4 × 10–18 J.

From the question,

We are to calculate the energy of a photon with a frequency of 3.6 × 10¹⁵ Hz

The energy of a photon can be calculated by using the formula,

\(E = h\nu\)

Where \(E\) is the Energy

\(h\) is the Planck's constant

and \(\nu\) is the frequency

From the given information

\(h = 6.63 \times 10^{-34} \ J.s\)

\(\nu = 3.6 \times 10^{15} \ Hz\)

Therefore,

\(E = 6.63 \times 10^{-34} \times 3.6 \times 10^{15}\)

\(E = 2.3868 \times 10^{-18} \ J\)

\(E \approx 2.4 \times 10^{-18} \ J\)

Hence, the energy of the photon is 2.4 × 10⁻¹⁸ J. The correct option is the last option 2. 4 × 10–18 J.

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Answer:

The answer is C and E

Explanation:

I just had that question

Answer:

c and e

Explanation:

answers

Explanation:

1. In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .

2.Nonmetals tend to gain electrons in chemical reactions and have a high attraction for electrons within a compound. The most reactive nonmetals reside in the upper right portion of the periodic table.

3.The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Moles \(H^+\)neutralized = moles \(OH^-\)neutralized at the equivalence point of a titration. Hence, option A is correct.

A method or process of determining the concentration of a dissolved substance in terms of the smallest amount of reagent of known concentration required to bring about a given effect in reaction with a known volume of the test solution.

Equivalence point: point in titration at which the amount of titrant added is just enough to completely neutralize the analyte solution.

At the equivalence point in an acid-base titration, moles of base = moles of acid and the solution only contains salt and water.

Hence, option A is correct.

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Answer:

convection

Explanation:

The effect of errors on the calculated concentration of CI is significant.

A 10.00 mL diluted chloride sample was titrated with 0.02749 M AgNO3, and 16.51 mL AgNO, was required to reach the endpoint. The effect of errors on the calculated concentration of CI can be explained as follows:a. The student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M. If the student read the molarity of AgNO, as 0.02479 M instead of 0.02749 M, then the experimentally calculated moles of Ag would be too high. Consequently, the calculated [CI] in the unknown would come out too low. b.

The student was past the endpoint of the titration when the final buret reading was taken. If the student was past the endpoint of the titration when the final buret reading was taken, then the experimentally determined moles of Ag would be too low. This would cause the calculated C1 concentration to come out too high. Consequently, the calculated moles of CI would come out too high. Therefore, the effect of errors on the calculated concentration of CI is significant.

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The partial pressure of a component gas in a mixture is the pressure that gas would exert if present alone in the vessel at the same temperature as that of the mixture. Here the moles of hydrogen is 10.4

The pressure exerted by a mixture of two or more non-reacting gases enclosed in a definite volume is equal to the sum of the partial pressures of the component gases.

Partial pressure = Mole fraction × Total pressure

Mole fraction = Partial pressure /  Total pressure = 250 / 600 = 0.416

Mole fraction = Number of moles of Hydrogen / Total moles

Number of moles of Hydrogen = 0.416 × 25 = 10.4

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CO2 produced by humans About 1/3 of carbon dioxide has been absorbed by the oceans. with an atmospheric carbon content of more than 800 billion tons.

Metals are melted using coke made from coal and charcoal, two forms of impure carbon. In the iron and steel sectors, it is particularly crucial. Pencil leads, electric motor brushes, and furnace linings all include graphite.

A carbon atom has a nucleus made up of six protons and six neutrons that is encircled by six electrons. The first two electrons must occupy the inner atomic orbital according to quantum mechanics, while the other four electrons must have wavefunctions that only partially fill the second standard and three second primary orbitals.

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Answer:

Possible lowest volume = 0.19 cm

Possible highest volume = 0.21 cm

Explanation:

given data

volumetric pipette uncertainty  =  0.01 cm³

total volume = 0.20 cm³

solution

we will get here Possible lowest and highest volume that is express as

Possible lowest volume = total volume - uncertainty   .....................1

Possible highest volume = total volume + uncertainty    ....................2

put here value in both equation and we get

Possible lowest volume = 0.20 cm - 0.01 cm

Possible lowest volume = 0.19 cm

and

Possible highest volume = 0.20 cm + 0.01 cm

Possible highest volume = 0.21 cm

The lowest and highest possible volumes of the pipette measurement is the slight change in the measured value due to the error value. Hence, the lowest and highest possible values are 0.195cm³ and 0.205cm³ respectively

Given the Parameters :

Possible values = measured value ± Error

Lowest possible value = 0.20 - 0.005 = 0.195 cm³

Highest possible value = 0.20 + 0.005 = 0.205 cm³

Therefore, the lowest and highest possible values are 0.195cm³ and 0.205cm³ respectively.

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Answer:

Graph? Question is incomplete.

The reaction between HCl and NaHCO3 in the bicarbonate buffer system produces NaCl, CO2, and H2O.                                        

The bicarbonate buffer system is an important physiological buffer system in the body that helps maintain the pH of the blood within a narrow range. When an acid such as HCl is added to the system, the bicarbonate buffer system reacts with it to form carbonic acid, which then breaks down into water and carbon dioxide.
The balanced equation for this reaction is: HCl + NaHCO₃ → NaCl + H₂CO₃. The bicarbonate buffer system helps maintain pH stability in the body by converting strong acids or bases into weaker ones through chemical reactions like this one.

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False. Electric water heaters do not need to be vented to a flue so fumes can escape to the outside of the buildings since they do not produce fumes.

Electric water heaters produce heat and transfer it to water within an insulated tank. The heat source is an electric element that is submerged in the water.Electric water heaters are gaining popularity due to their energy efficiency and low maintenance requirements. Since they don't produce combustion gases, there is no need for a flue or chimney to be installed, which can save money and space. However, for safety reasons, it is recommended that electric water heaters be installed in an area with good ventilation to prevent any potential buildup of carbon monoxide or other hazardous gases from other appliances in the vicinity.

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Answer:

Her speed is 6.8m/s.

Explanation:

K.E= 1/2mv²

or, 2543.2= 1/2×110×v²

or, 2543.2 = 55v²

or, 2543.2/55 = v²

or, 46.24 = v²

or, 6.8² = v²

v = 6.8 m/s

answer

6.8

explanation

k.e=1/2v^2

2543.2=55v^2

46.24=v^2

6.8^2=v^2

v=6.8

RNA can be translated into proteins using codon charts. The genetic code is the set of instructions contained within DNA that specifies the sequence of amino acids required to build a protein.

This code is transcribed into messenger RNA (mRNA) which serves as the template for protein synthesis.Each codon is made up of three nucleotides and specifies a particular amino acid. There are 64 possible codons, but only 20 amino acids, so most amino acids are specified by more than one codon.

Additionally, there are three "stop" codons that signal the end of protein synthesis.The process of protein synthesis begins when the ribosome binds to the mRNA and begins to move along it, reading each codon in turn. Each codon is recognized by a transfer RNA (tRNA) molecule that carries the appropriate amino acid.

The ribosome then catalyzes the formation of a peptide bond between the amino acid carried by the tRNA and the growing polypeptide chain

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ujgcxdrthfdr

Explanation:

rghc gmrhj3tu3theth3tj3tht4 eg 3is get the area 5of 6

Answer:

Ca(OH)2 + HNO3 = Ca(NO3)2 + H2O | Chemical reaction and equation.

The statement that describes a way in which humans could increase biodiversity in a marine ecosystem is as follows: Fish populations increase as dissolved oxygen decreases (option A).

Biodiversity is the diversity (number and variety of species) of plant and animal life within a region.

It can be used more specifically to refer to all of the species in one region or ecosystem. Biodiversity refers to every living thing, including plants, bacteria, animals, and humans.

Marine ecosystem are aquatic environments with high levels of dissolved salt. These include the open ocean, the deep-sea ocean, and coastal marine ecosystems, each of which has different physical and biological characteristics.

The biodiversity of a marine ecosystem can be illustrated by the increase in fish populations in the marine environment, hence, option A is correct.

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Answer:

Vanadium (23)

Explanation:

You can add all the small numbers up and then from that total look at a periodic table and find the element that has that atomic mass.

The total is 23, if you look at the chart the element with an atomic mass of 23 is Vanadium.

The expected major product of the given reaction sequence is t-BuBr.

In the first step of the reaction sequence, t-BuOK (tert-butoxide potassium) and t-BuOH (tert-butanol) are involved. This combination typically results in the elimination of a proton (H⁺) from t-BuOH, generating the t-butoxide ion (t-BuO⁻). The t-BuO⁻ ion then acts as a strong base and abstracts a proton from t-BuBr, leading to the formation of t-BuBr as the major product.

Therefore, the expected major product of the reaction sequence is t-BuBr.

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Answer:

catalpa

Explanation:

i took the test

Answer:

Explanation:

Work is a net force applied through a distance in order to displace an object, commonly abbreviated as W. A net force is the sum of all forces acting on an object. Work is mass times acceleration and distance so to find out the work you simply calculate the acceleration of the box being brought in. Next find the distance it was carried to get in the house. Then find out the mass of the box and finally multiply those sums together to get the amount of work put in to bring the package inside.

Answer: V2= 41.2mL

Explanation:

Givens:

* V1= 20ml

* T1 = -109 ⁰C --> K= ⁰C + 273.15 --> 164.15 K

* V2 = ??

* T2= 338.15 K

Use Charles law V1/T1 = V2/T2

Since we are looking for V2 we can rearrange the formula to

V2= (T2 x V1) /T1

V2= (338.15K x 20mL) / 164.15 K

V2= 41.2mL

NOTE:

Temperature should always be in K not in ⁰C or ⁰F

To convert from C to K use

*K= ⁰C + 273.15

Enter your C value in the ( ⁰C ) and you can get K

The synthesis of glycogen in the liver is an example of anabolism.

Anabolism refers to the metabolic processes in which larger molecules are built from smaller molecules, requiring energy input. In the case of glycogen synthesis in the liver, glucose molecules are joined together to form long chains of glycogen. This process requires energy in the form of ATP, which is supplied by the breakdown of glucose through the process of glycolysis.

In contrast, catabolism refers to the metabolic processes in which larger molecules are broken down into smaller molecules, releasing energy. This process is involved in the breakdown of glycogen to release glucose when the body needs energy.

The electron transport chain is a series of electron transporters located in the inner mitochondrial membrane that plays a key role in the production of ATP through oxidative phosphorylation. It is involved in both catabolic and anabolic processes, depending on the energy needs of the cell.

What is anabolism?

Anabolism is the set of metabolic processes in which larger and more complex molecules are synthesized from smaller molecules.

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Answer:

Explanation:

As relative molecular mass of molecule increases its rate of diffusion decreases . Mr of HCl is 1+35.5=36.5 which is greater than Mr of NH3 which is only 14+3=17. As HCl is heavier it'll diffuse at a lower rate so travel less distance whilst NH3 will cross a greater distance as it diffuses faster so white solid appears closer to HCl that is approximately B.

Answer:

For every 1 Ca(NO3)2 there are six (2 * NO3 or 2 * 3 O) oxygens. If you have 3 mole of Ca(NO3)2 then you have 18 mole of oxygen atoms (3*6).

Explanation:

Chart for question attached

Answer:

Joshua

Explanation:

By cost-effective here, we mean the contractor that does the job best at the shortest time and lowest money cost. To get this, we calculate total cost for each contractor and then consider time for completion of the job:

Joshua charges $25 per hour for 5 hrs

Carmen charges $20 per hour for 7 hrs

Dante charges $30 per hour for 6 hrs

Alicia charges $20 per hour for 8 hrs

Joshua's cost= $25×5=$125 in 5 hours

Carmen's cost = $20×7= $140 in 7 hours

Dante's cost= $30×6=$180 in 6 hours

Alicia's cost= $20×8= $160 in 8 hours

From the above we can see that Joshua is the most cost-effective contractor given that he completes the job in less time and with less money.

Answer:

Mendeleev published his first periodic table of the elements in 1869. Mendeleev arranged the elements in order of increasing relative atomic mass. When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend.

Conventional current is in the direction of option B) anode to cathode through the metallic path. Conventional current flows from the positive side (anode) to the negative side (cathode) of a circuit, following the path of least resistance provided by the metallic conductor. This concept was established before the discovery of electrons and their role in current flow.

Conventional current refers to the flow of positive charges in a circuit. Therefore, the direction of conventional current is from the anode to the cathode through the metallic path, which is option B. This convention was established before the discovery of electrons and the realization that the actual flow of electric charge is from negative to positive. However, the convention of using conventional current as the standard for analyzing circuits is still widely used today in electrical engineering and physics. It is important to keep in mind that while conventional current is used to describe the direction of current flow, the actual flow of electrons is in the opposite direction.

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