You are using an experimental spectrophotometer. If a detector reading is 45158 (in some unit) for a blank tube and 4119 for your riboflavin sample, what is the absorbance of the riboflavin sample? Report your answer as a to the nearest 0. 001 AU

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Answer 1

You are using an experimental spectrophotometer. If a detector reading is 45158 (in some unit) for a blank tube and 4119 for your riboflavin sample. Then, the absorbance of the riboflavin sample is 1.30.

Riboflavin, also known as vitamin B2, is a vitamin found in foods and sold as a dietary supplement. Required for the formation of two major coenzymes, flavin mononucleotide and flavin adenine dinucleotide. These coenzymes are involved in energy metabolism, cellular respiration and antibody production, and normal growth and development. Coenzymes are also required for the metabolism of niacin, vitamin B6, and folic acid. Riboflavin is prescribed to treat corneal thinning, and oral administration can reduce the frequency of migraines in adults.

X particles have a range of P.E and higher P.E molecule will evaporate.X particle have a range of P.E and Lower P.E molecule will evaporate.Particle have a range of K.E and lower K.E molecule will evaporate.Particle have a range of K.E and higher K.E molecule will evaporate.

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Answer 2

Answer:

The absorbance of the riboflavin sample is 0.898 AU, which is calculated by subtracting the blank tube reading (45158) from the riboflavin sample reading (4119) and dividing by 45158.

Related Questions

IS ANYONE GOOD AT CHEMISTRY?? I need help pleaseeeee

I need the answers on how to get the answer for scratch work to turn in

Answers

the wavelength of a single photon of UV-A electromagnetic radiation that possesses an energy of 6.2 x 10^-19 J is approximately 3.210 x 10^-5 cm. The option closest to this answer is 3.2 x 10^-5 cm.

explain about energy ?

The energy E of a photon is related to its wavelength λ by the following formula:

E = h * c / λ

where h is the Planck's constant, c is the speed of light in a vacuum, and λ is the wavelength of the photon.

We are given the energy of a single photon of UV-A electromagnetic radiation as 6.2 x 10^-19 J. The values of h and c are:

h = 6.626 x 10^-34 J s

c = 2.998 x 10^8 m/s (the speed of light in a vacuum)

To convert the wavelength to centimeters, we can use the conversion factor of 1 m = 100 cm.

Now we can rearrange the formula to solve for the wavelength λ:

λ = h * c / E

Substituting the given values, we get:

λ = (6.626 x 10^-34 J s) * (2.998 x 10^8 m/s) / (6.2 x 10^-19 J)

λ = 3.210 x 10^-7 m = 3.210 x 10^-5 cm (after conversion)

Therefore, the wavelength of a single photon of UV-A electromagnetic radiation that possesses an energy of 6.2 x 10^-19 J is approximately 3.210 x 10^-5 cm. The option closest to this answer is 3.2 x 10^-5 cm.

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What mass of sodium iodide (NaI) will react with 7.82 grams of chlorine?

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16.49g sodium iodide (NaI) will react with 7.82 grams of chlorine.

Given, Mass of Chlorine gas = 7.82g

Mass of sodium iodide = ?

Let's find the number of moles of the given element:

Number of moles = mass/molar mass

Molar mass of Cl₂ = 2(35.5) = 71g/mol

Number of moles = 7.82/71 = 0.11mole

The given reaction equation is:

2NaI + Cl₂ → 2NaCl + I₂

Here, 2 mole of Cl₂ will react with 2 mole of NaI

Also, 0.11 mole of Cl₂ will also react with 0.11mole of NaI

Mass of sodium iodide = number of moles x molar mass

Molar mass of NaI = 23 + 126.9 = 149.9g/mol

Mass of sodium iodide = 0.11 x 149.9 = 16.49g

Answers

In order to generate the same amount of heat as 1 mole of H2O, approximately 2 moles of H2S must be condensed.

A colourless gas noted for its strong "rotten egg" smell at low concentrations is hydrogen sulphide. It is exceedingly poisonous and combustible.

Compared to hydrogen sulphide, one mole of water requires about 40.7 kJ/mol of enthalpy to vaporise.

To produce the same amount of heat, more hydrogen sulphide must condense into water. Because water has a higher enthalpy of vaporisation than hydrogen sulphide, this happens.

Hence, around two moles of hydrogen sulphide will give the heat produced as one mole of water produces.

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The complete question is-

pasteurization was first developed to kill __________ in wine.

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Pasteurization was first developed to kill spoilage bacteria in wine.

What is Pasteurization?

Pasteurization is a procedure in which a liquid is subjected to a high temperature for a certain time and then cooled rapidly in order to destroy the microorganisms present in it without altering the qualities of the liquid.

Pasteurization was first developed by Louis Pasteur to kill spoilage bacteria in wine. Before the pasteurization process was developed, wine contained bacteria that caused fermentation leading to unpleasant flavors and toxins dangerous to humans.

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experts estimate that the current atmospheric concentration of carbon dioxide is how much higher than it was 250 years ago?

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The current atmospheric concentration of carbon dioxide is 40 in 250 years ago

Long-term changes to weather patterns and temperatures are a result of climate change.

The use of fossil fuels (such as coal, oil, and gas), which release heat-trapping gases, has been the primary cause of climate change since the 250s, despite the fact that these changes are natural.

Global warming is the long-term increase in the planet's average temperature.

Even while there has been a long-term warming trend, the usage of fossil fuels over the past century has caused the pace of acceleration to increase.

The usage of fossil fuels has expanded along atmospheric concentration with the global population.

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Which type of molecule is made from fatty acids?
A.LipidB.Nucleic acidC.CarbohydrateD.Protein

Answers

Answer:

Your answer would be Choice A.

Explanation:

The structure is composed of a hydrophilic phosphate group, two hydrophobic fatty acid tails, and a backbone formed of glycerol.

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