A. solution containing 10-5m atp has a transmission 0.702 at 260 nm in a 1 cm cuvette. calculate absorbance of the solution in 3 cm cuvette.
Answers
To calculate the absorbance of the solution in a 3 cm cuvette, we can use the Beer-Lambert Law formula:
A = ε × l × c
where A is the absorbance, ε is the molar absorptivity, l is the path length of the cuvette (in cm), and c is the concentration of the solution (in mol/L).
In this case, you have the absorbance (A) and path length (l) for the 1 cm cuvette, and you need to find the absorbance for the 3 cm cuvette.
Since ε and c remain constant, you can use the ratio of the path lengths to find the new absorbance:
A₃cm = A₃cm × (l₃cm / l₁cm)
A₃cm = 0.702 × (3 cm / 1 cm)
A₃cm = 0.702 × 3
A₃cm = 2.106
So, the absorbance of the solution in a 3 cm cuvette is 2.106.
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Related Questions
Select the correct answer from each drop-down menu. A student labels two 250 milliliter beakers with the letters A and B. She puts 100 milliliters of water in each of them. She adds some salt to beaker A and stirs until the salt dissolves completely. Then she adds another 50 milliliters of water to beaker A. She adds more salt to beaker B, and the salt in beaker B doesn't completely dissolve in the water even after much stirring. The solution in beaker A is . The solution in beaker B is .
Answers
Answer:
The solution in beaker A is unsaturated
The solution in beaker B is saturated
Explanation:
A saturated solution is a solution that contains just as much solute as it can normally hold at a particular temperature. An unsaturated solution is a solution that contains less solute than it can normally hold at a particular temperature.
If more solute is added to a saturated solution, the added solute does not dissolve completely. However, if more solute is added to an unsaturated solution, the added solute dissolves.
Is soap necessary to remove salt (NaCl) from your hands? Explain
Answers
No, soap isn't necessary to remove salt from hands.
SoapSoap is an amphipathic substance, that is, it has a polar part and a non-polar part.
In view of this, this substance is very necessary for cleaning hands when they are dirty with something nonpolar, such as oil, as it can bind to the dirt molecules and leave in the water.
In the case of salt, as it is not a non-polar substance, just water is enough to clean salt from your hands.
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3. How many protons do the following have?
Calcium
Gold
Copper
Iron
Answers
Answer:
calcium=20
gold=79
copper=29
iron=26
Explanation:
what was the active ingredient used in the first cold wave?
Answers
Answer:
Borax
sorry about this i needed more charecters
alue: 4 Why did Joseph Stalin not allow elections in the nations the Soviets occupied with their troops after World War II? a. He knew that these nations would not want a foreign ruler. O b. He knew these nations would be anti-Soviet since they had waged war in these nations. O c. He knew these nations would elect leaders who would try to go back to war with the Soviet Union. Od. He knew that communist members in his nation would not like elections. =/4 Prev Next >
Answers
Joseph Stalin didn't allow elections in the nations the Soviets occupied with their troops after World War II because: option B.
What is the Cold War?The Cold War was a period of open and intense conflict between the United States of America and the Soviet Union that developed almost immediately after World War II (Second World War).
Also, the Cold War officially started on the 12th of March, 1947 and came to an end on the 3rd of December, 1989.
Based on historical information and records, we can reasonably infer that Joseph Stalin didn't allow elections in the nations the Soviets occupied with their troops after World War II because he knew these nations would be anti-Soviet since they had waged war in these nations.
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why is m3 is derived unit?
Answers
Answer and Explanation:
There are 7 base units, m is one of them. Any unit made up of a combination of them is a derived unit. Also, any unit that is defined to be equivalent to a combination of base units is a derived unit.
A wave has an energy of 305 kJ. What is the frequency of this wave in Hertz (Hz)? Use 3 Significant Digits.
Answers
Explain why hydrogen is a substance.
Answers
Answer:
Hydrogen is a substance because it has mass and combined with other molecules it can make another substance such as water.
Explanation:
Julio earns $300 a week working a summer job. The paycheck he deposits in the bank is for $250. Which of these accounts for the difference in amounts?
Answers
Answer:
theirs a $50 tax with the income hes making
Explanation:
Answer:
$50
Explanation:
So julio earns $300 a week(summer job) and the paycheck he deposits in the bank is $250,so you just need to subtract & julio is paying $50 tax
Why is rusting of iron regarded as a slow combustion process
Answers
Explanation:
Rusting is a very slow process compared to combustion. Rusting can take place at room temperature whereas combustion takes place only at a specific ignition temperature.
Answer:
Rusting is a very slow process compared to combustion. Rusting can take place at room temperature whereas combustion takes place only at a specific ignition temperature.
Explanation:
please help :) How can scientists ensure that their data are reliable? A) by making a single observation B) by recording values without units C) by keeping the results private D) by repeating trials during an experiment
Answers
Answer:
D. by repeating trials during an experiment
Explanation:
chile its actually d
Explanation:
In an isolated system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances (qhot water = -qcold liquid). which process in your activity was endothermic
Answers
In an isolated system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances. The process that gained energy was endothermic.
Chemical reactions are said to be endothermic if the reactants take in heat energy from their environment in order to generate products. These reactions bring a reduction in the temperature of the space around them, which results in a cooling effect. Endothermic reactions can also occur in the context of physical processes; for example, ice cubes can melt into liquid water by absorbing heat energy from their surroundings. In simple the process that absorbs heat is endothermic.
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What is the atomic number of Sulfur atom
Answers
Answer:
16
Explanation:
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consider an lpcvd polysilicon deposition with sih2cl2/h2 source gases. what will happen to the deposition rate if the pressure is reduced by a factor of 2 while sih2cl2 partial pressure is kept constant.
Answers
In an LPCVD polysilicon deposition with SiH₂Cl₂/H₂ source gases, if the pressure is reduced by a factor of 2 while SiH₂Cl₂ partial pressure is kept constant, the deposition rate will increase by a factor of 2.5.
What is an LPCVD process?LPCVD (Low-Pressure Chemical Vapor Deposition) is a method of creating thin films or coatings on substrates in a vacuum chamber. LPCVD is a process in which reactive gases, including organometallic compounds, halides, and metal-organic precursors, are used to produce thin films or coatings under low pressure.
LPCVD polysilicon is a method for depositing polysilicon at low pressures. The process includes the use of SiH₂Cl₂ and H₂ as source gases. The deposition rate of the polysilicon depends on the partial pressure of SiH₂Cl₂ in the gas mixture.
According to the question, if the pressure is reduced by a factor of 2, while the partial pressure of SiH₂Cl₂ is kept constant, the deposition rate will increase by a factor of 2.5.
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Sig fig 35 mm + 21.321 mm + 2.00005 mm =
Answers
Answer:
Significant Figures in 200.0
Result 200.0
Sig Figs 4 (200.0)
Decimals 1 (200.0)
Scientific Notation 2.000 × 102
E-Notation 2.000e+2
A piece of sodium was cut easily into smaller pieces with a knife. The sodium was added to some water in a trough
The sodium:
.floated
.melated quickly to a silvery ball
.moved on the surface of the water
.fizzed
Answers
Answer:
Melated quickly into a silver ball
Answer:
C. melated quickly to a silvery ball
Explanation:
You have a 3. 5 L solution that contains 60. 2 grams NaCl. (58. 44 g/mol NaCl) What is the molarity of the solution?
Answers
_______ is the process in which light energy is transformed into food energy.
photosynthesis
life
biotic
abiotic
Answers
Answer:
Photosynthesis
Explanation:
The hydroxyl end groups of a sample (2. 00 g) of linear poly(ethylene oxide) were acetylated by reaction with an excess of acetic anhydride (2. 5 x10-3 mol) in pyridine: After completion of the reaction, water was added to convert the excess acetic anhydride to acetic acid, which together with acetic acid produced in the acetylation reaction was neutralized by addition of 30 cm3 (note different number than textbook) of 0. 100 mol/dm3 solution of sodium hydroxide. Calculate the number average molar mass for the sample of poly(ethylene oxide) given that each molecule has two hydroxyl end groups. Poly(ethylene oxide):
Answers
The number average molar mass for the sample of poly(ethylene oxide) is 13000 g/mol.
The number of moles of acetic anhydride used in the reaction can be calculated as follows:
Moles of acetic anhydride = (mass of acetic anhydride) / (molar mass of acetic anhydride)
Molar mass of acetic anhydride = (2 x molar mass of carbon) + (3 x molar mass of oxygen) = (2 x 12.011) + (3 x 15.999) = 102.09 g/mol
Moles of acetic anhydride = (2.5 × 10⁻³) / 102.09 = 2.45 × 10⁻⁵ mol
Since the hydroxyl end groups of each molecule of poly(ethylene oxide) react with one molecule of acetic anhydride, the number of moles of poly(ethylene oxide) can be calculated as follows:
Moles of poly(ethylene oxide) = moles of acetic anhydride / 2 = 1.23 x 10⁻⁵ mol
The mass of the sample of poly(ethylene oxide) is given as 2.00 g, so the number average molar mass can be calculated as follows:
Number average molar mass = (mass of sample) / (moles of sample)
Number average molar mass = 2.00 / 1.23 x 10⁻⁵ = 1.626 x 10⁸ g/mol
However, each molecule of poly(ethylene oxide) has two hydroxyl end groups, so the actual number average molar mass is half of this value:
Number average molar mass = 1.626 x 10⁸ / 2 = 13000 g/mol.
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A 10.0-L rigid container holds 3.00 mol H2 gas at a pressure of 4.50 atm. What is the temperature of the gas? Use: PV = nRT, R = 0.0821 L•atm/mol•K K
Answers
The temperature of the gas, given that the container holds 3.00 moles of H₂ gas at a pressure of 4.50 atm is -90.3 °C
How do I determine the temperature of the gas?Ideal gas equation states as follow:
PV = nRT
Where
P is the pressure V is the volumen is the number of moleR is the gas constantT is the temperatureUsing the above formula we can obtain the temperature of the gas as follow:
Volume (V) = 10.0 L Number of mole (n) = 3.00 molesPressure (P) = 4.50 atmGas constant (R) = 0.0821 atm.L/Kmol Temperature (T) =?PV = nRT
4.5 × 10 = 3 × 0.0821 × T
45 = 0.2463 × T
Divide both sides by 0.2463
T = 45 / 0.2463
T = 182.7 K
Subtract 273 to obtain answer in °C
T = 182.7 - 273
T = -90.3 °C
Thus, the temperature is -90.3 °C
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Answer:
183 K
Explanation:
Edg
Calculate the percent composition of O in K3PO4
Answers
The percent composition of oxygen in tripotassium phosphate is 30.15%.
What is percent composition?Percent composition is defined as a convenient way to record concentration of solution.It is a expression which relates mass of an element to compound as,mass of element/mass of compound ×100.
In the given compound of tripotassium phosphate the molar mass is 212.27 g/mole, while that of oxygen is 16×4=64 g/mole.Thus, the percent composition of oxygen in tripotassium phosphate is 64/212.27×100=30.15%.
Thus, the percent composition of oxygen in tripotassium phosphate is 30.15%.
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Translate the following balanced chemical equation into words.
Ba3N2(aq) + 6H2O(l) → 3Ba(OH)2(s) + 2NH3(g)
A. Barium nitrogen reacts with water to yield barium hydroxide and nitrogen hydrogen.
B. Barium nitrate reacts with water to yield barium oxide and nitrogen hydride.
C. Boron nitride reacts with water to yield boron hydroxide and nitrogen trihydride.
D. Barium nitride reacts with water to yield barium hydroxide and nitrogen trihydride.
Answers
Ba_3N_2 is Barium nitride, 6H2O is 6 water molecules, Ba(OH)_2 is Barium hydroxide, and NH_3 is nitrogen trihydride/ammonia.
(aq) = aqueous solution, (s) = solid, (g) = gas, and (l) = liquid.
So, D. barium nitride reacts with water to yield barium hydroxide and nitrogen trihydride.
if a person’s stroke volume was 70ml, and the end diastolic volume is increased from 135ml to 165ml, without any changes in arterial pressure. what is the stroke volume in the next few cardiac cycles?
Answers
The stroke volume in the next few cardiac cycles will be 100 ml if the end-diastolic volume is increased from 135ml to 165m.
The formula for stroke volume is given as;
SV = EDV - ESV
Here SV represents stroke volume, EDV represents end-diastolic volume and ESV represents end-systolic volume.
First, we calculate this person's end-systolic volume as follows;
If the person’s stroke volume was 70ml and his initial diastolic volume was 135 ml, then:
70 = 135 - ESV
70 - 135 = -ESV
-65 = -ESV
ESV = 65ml
Now the stroke volume in the next few cycles if the end-diastolic volume increase to 165 ml can be calculated as follows;
SV = 165 - 65
SV = 100ml
Therefore, the stroke volume in the next few cardiac cycles is calculated to be 100ml.
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what is the percent chance that the offspring will be dwarf plants with yellow fruit
Answers
Answer:
Yellow fruit and dwarf vines are recessive traits in tomatoes. Red fruit and tall vines are dominant. Complete a Punnett square and answer the questions for a completely dominant red and tall plant crossed with a heterozygous red and dwarf plant.
Explanation:
What units are forces measured in?
Answers
Answer:
newton
Explanation:
foeces are measured in newton (N)
Answer: Newtons.
Explanation:
Which energy level has the most energy available to it?
4
3
2
1
Answers
Select all of the following that are products in the overall equation for aerobic respiration. (select more than one)
ATP (adenosine triphosphate)
NaOH (natrium hidroxide)
CO2 (carbon dioxide)
CO (carbon monoxide)
Answers
The products in the overall equation for aerobic respiration are ATP (adenosine triphosphate) and CO2 (carbon dioxide).
What is aerobic respiration?
Aerobic respiration is a metabolic process that uses oxygen to convert glucose into energy. During aerobic respiration, glucose (sugar) is broken down in the presence of oxygen (O2) to produce energy in the form of ATP (adenosine triphosphate). This process also produces carbon dioxide (CO2) and water (H2O). The energy produced by aerobic respiration is used to fuel cellular processes such as protein synthesis and muscle contractions. Aerobic respiration is the main form of respiration in humans and other animals.
The overall equation for aerobic respiration is C6H12O6 + 6O2 yields 6CO2 + 6H2O + energy (as ATP). ATP (adenosine triphosphate) and CO2 (carbon dioxide) are products in the overall equation for aerobic respiration. NaOH (natrium hydroxide) and CO (carbon monoxide) are not products in the equation.
Therefore, ATP (adenosine triphosphate) and CO2 (carbon dioxide) are the answers.
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How many moles are in 1.4 x 10^21 atoms of sodium?
Answers
Answer:
devide by avogadro constant 6.02*10^23
Explanation:
Nombre las dos ciudades involucradas en los peligros potenciales de la ciencia y tecnología que ocurrió en el año 1945.
Answers
Answer:
ver explicacion
Explanation:
En 1945, durante la Segunda Guerra Mundial, dos ciudades japonesas; Hiroshima y Nagasaki fueron bombardeadas con bombas atómicas durante el ataque ofensivo.
Hiroshima fue bombardeada el 6 de agosto de 1945 mientras que Nagasaki fue bombardeada el 9 de agosto de 1945.
Las bombas provocaron la muerte instantánea de aproximadamente 120.000 personas y obligaron al emperador japonés a rendirse incondicionalmente.
A molecule in the J=3 state absorbs a photon. What are the possible momenta of the resultant molecule?
Answers
The possible momenta of the resultant molecule are `±1, 0`.
When a molecule in the J=3 state absorbs a photon, the possible momenta of the resultant molecule are `±1, 0`.
Explanation:
Absorption of a photon occurs when a molecule goes from a lower energy state to a higher energy state. In the process, the molecule gains energy equal to the energy of the photon it absorbs.
The energy of the photon is given by `E = hν`,
where `h` is Planck's constant
and `ν` is the frequency of the photon. The change in energy of the molecule is given by `ΔE = E2 - E1`, where `E2` is the energy of the higher state and `E1` is the energy of the lower state
.For a molecule in the J=3 state, the possible values of the angular momentum quantum number are `J = 3, 2, 1, 0, -1, -2, -3`. When the molecule absorbs a photon, it can transition to a higher J state or to a lower J state. The possible transitions are:`ΔJ = ±1` - This corresponds to a change in the angular momentum of the molecule. This means that the molecule gains or loses angular momentum when it absorbs a photon.`ΔJ = 0` - This corresponds to no change in the angular momentum of the molecule. This means that the molecule remains in the same J state when it absorbs a photon. Therefore, when a molecule in the J=3 state absorbs a photon, the possible momenta of the resultant molecule are `±1, 0`.
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