Calculate the fraction of m2 that remains in the aqueous phase, , if 125 ml of 0. 10 μm m2 is extracted once with 15. 0 ml of 0. 42 mm l− at ph 3. 0?
Answers
The fraction of m2 that remains in the aqueous phase is approximately 0.00198.
To calculate the fraction of m2 that remains in the aqueous phase, we need to consider the concentrations and volumes of the solutions involved in the extraction process.
Given:
Initial volume of m2 solution = 125 ml
Concentration of m2 solution = 0.10 μm
Volume of extracting solution = 15.0 ml
Concentration of extracting solution = 0.42 mm
pH of the system = 3.0
First, we need to convert the concentration units to the same system. Since both the m2 solution and the extracting solution are in different concentration units (μm and mm, respectively), we need to convert them to a common unit. Let's convert both to micromolar (μm) for consistency.
Concentration of m2 solution = 0.10 μm
Concentration of extracting solution = 0.42 mm = 420 μm
Next, we can calculate the moles of m2 in each solution using the formula:
moles = concentration (in μm) × volume (in ml)
moles of m2 in the m2 solution = 0.10 μm × 125 ml = 12.5 μm·ml
moles of m2 in the extracting solution = 420 μm × 15.0 ml = 6300 μm·ml
Now, let's calculate the total moles of m2 present in the system:
total moles of m2 = moles in m2 solution + moles in extracting solution
= 12.5 μm·ml + 6300 μm·ml
= 6312.5 μm·ml
Finally, we can calculate the fraction of m2 remaining in the aqueous phase by dividing the moles of m2 in the m2 solution by the total moles of m2:
fraction of m2 remaining in aqueous phase = moles in m2 solution / total moles of m2
= 12.5 μm·ml / 6312.5 μm·ml
= 0.00198
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Related Questions
Nitric acid, HNO3(aq), can be manufacturer from ammonia using a series of three chemical reactions called the Ostwald process. The reactions involved are 4NH3(g) + 5O2(g) = 4NO(g) + 6H2O(g),
2NO(g) + O2(g) = 2NO2(g),
3NO2(g) + H2O(g) = 2HNO3(aq) + NO(g).
Determine the mass of nitric acid produced if 425 kg of ammonia reacts. Assume that plenty of oxygen is available.
Answers
Nitric acid (HNO3) is an odorless liquid that gives out yellow or red odors. Nitric acid exposure can irritate the eyes, skin, and mucous membranes.
Thus, It can also lead to dental erosion, delayed pulmonary edema, pneumonitis, and bronchitis.
The acid nitric is quite corrosive. Workers that are exposed to nitric acid risk injury. The dose, timeframe, and type of work determine the exposure level.Many industries use nitric acid.
It is employed in the production of explosives, dyes, and fertilizers. Additionally, nitric acid is utilized in the polymer sector. Many industries use nitric acid. It is employed in the production of explosives, dyes, and fertilizers.
Thus, Nitric acid (HNO3) is an odorless liquid that gives out yellow or red odors. Nitric acid exposure can irritate the eyes, skin, and mucous membranes.
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the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
Answers
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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the main function of a(n) is to help an interaction between two chemicals to occur, changing both chemicals.
Answers
The main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.
What are vitamins?Vitamins can be defined as a special class of micronutrients that must be obtained from the diet in order to maintain body homeostasis, which can be liposoluble or hydrosoluble.
In conclusion, the main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.
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Why might changes to an environment cause an organism’s population to decrease?
Answers
Where can one find most of the world's drinking water? Question 4 options: freshwater collection areas. rain clouds , manmade reservoirs , oceans
Answers
Fresh water collection areas is the area where you can find most of the
world's drinking water.
What is Freshwater?
This is the type of water which contains low amount of dissolved salts and
solid particles which makes it very suitable for drinking.
Examples of Freshwater collection areas include the following:
RiversLakes StreamsGroundwaterRead more about Freshwater here https://brainly.com/question/20458567
acrostic poem for selective breeding
Answers
Answer:
Selective Breeding
Weeds are bad,
But why is this so?
Just like grass,
They too grow.
Weeds are disliked,
Like the drink that's spiked.
But why is this so?
Who's to say they shouldn't grow?
The weed is unwanted,
Like a murderer hunted.
But what crime did it commit?
Why should it not, be free to sit?
Thickly they may grow,
But grass even more so.
Who's to say they should not grow?
Why should their seed not be sow?
Weeds are bad,
But why is this so?
Just like grass,
They too grow.
If all things living, were for cared,
The land we own, for all shared.
The weed let live,
And life not carefully selected by- siv.
Selective breeding is unfair,
No better than plain warfare...
Explanation:
Why is making proteins important
Answers
BONUS QUESTION - It takes 194 mL of a 0.5 M NaOH solution to neutralize 300
mL of an HCl solution. What is the concentration of the HCl solution? (3 pts)
NaOH + HCL » NaCl + H,O
Answers
Answer:
1.7 mol/dm3
Explanation:
working out in the image
7. La constante de equilibrio Kc, se halla :
a) haciendo una simple división de las concentraciones Molares
b) con el cociente de la velocidad de los productos sobre los reactivos c) dividiendo las velocidades de las ecuaciones que forman la reacción química
d) con el cociente de las concentraciones de las sustancias presentes en la ecuación
Answers
By making a simple division of the Molar concentrations. The correct option is a.
The equilibrium constant Kc is a measure of the equilibrium between the forward and reverse reactions of a chemical reaction. It is a ratio of the concentrations of the products to the concentrations of the reactants at equilibrium.
The equilibrium constant Kc:
Kc = [products]/[reactants]
here [products] is the concentration of the products at equilibrium and [reactants] is the concentration of the reactants at equilibrium.
If the concentrations of the products and reactants are given in molar concentrations (M), we can express the equilibrium constant as a ratio of Molar concentrations using the following equation:
Kc = [products]M / [reactants]M
Therefore, to find the equilibrium constant Kc, we simply need to divide the Molar concentrations of the products and reactants by their respective coefficients.
Therefore, the correct option is a) by making a simple division of the Molar concentrations.
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Correct Question:
The equilibrium constant Kc is found:
a) by making a simple division of the Molar concentrations
b) with the quotient of the speed of the products over the reactants
c) dividing the speeds of the equations that form the chemical reaction
d) with the quotient of the concentrations of the substances present in the equation
write an assignment on primary sources of information on modern Indian history
please answer
please
please
Answers
Explanation:
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arrow_backSources of Information on Modern Indian History
Summary
Videos
References
A primary source of information for historians is the official records of the British administration. The British kept written records of every key instruction, meeting, transaction, investigation, plan, policy decision and agreement. They attached record rooms with all the important administrative institutions.
The British built specialized institutions like museums and archives to preserve important documents.
Historians gather important information about the provincial administrative system from the reports, memos, notings and letters preserved in the 19th century in the archives and record rooms across India.
For effective administration, the British carried out a number of surveys in the early 19th century.
By the end of the 19th century, censuses of all the Indian provinces were being carried out every ten years. This helped to collect information on the religion, caste and occupation of the people. These surveys have helped historians to collect information about modern India.
Personal diaries of personalities like Jawaharlal Nehru and Sardar Vallabhbhai Patel, newspapers, popular books like The Discovery of India and Glimpses of World History, autobiographies of personalities like Mahatma Gandhi, and accounts of travellers and pilgrims give a deep insight into the lives of the common people.
the quantity of antimony in a sample can be determined by an oxidation‑reduction titration with an oxidizing agent. a 8.73-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated hcl(aq) and passed over a reducing agent so that all the antimony is in the form sb3 (aq). the sb3 (aq) is completely oxidized by 41.3 ml of a 0.120 m aqueous solution of kbro3(aq). the unbalanced equation for the reaction is
Answers
The unbalanced equation for the reaction can be represented as follows: Sb3+(aq) + BrO3-(aq) → Sb5+(aq) + Br-(aq)
In this equation, Sb3+ represents the antimony in its reduced form, BrO3- is the oxidizing agent potassium bromate, Sb5+ represents antimony in its oxidized form, and Br- is the reduced form of bromine.
During the oxidation-reduction titration, the antimony in the sample is converted from Sb3+(aq) to Sb5+(aq) by the addition of the potassium bromate solution. The reaction consumes 41.3 ml of the 0.120 M potassium bromate solution.
The balanced equation for this reaction can be determined by ensuring that the number of atoms on both sides of the equation is balanced. However, since you requested a response within 120 words only, I have provided the unbalanced equation above.
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Make a circle graph for each set of data. Top 5 Most Linked-To Sites on the World Wide Web Site Hits (millions) America Online (www.aol.com) 93.0 Microsoft (www.msn.com) 83.8 Yahoo! (www.yahoo.com) 80.2 Terra Lycos (www.lycos.com) 40.3 About (www.about.com) 36.6 Source: Scholastic Kid’s Almanac, 2001 a. A circle graph. America Online is about 25 percent; Microsoft, 25 percent; Yahoo 23 percent; Terra Lycos, 15 percent; About, 10 percent. c. A circle graph. America Online is about 27 percent; Microsoft, 27 percent; Yahoo 22 percent; Terra Lycos, 12 percent; About, 10 percent. b. A circle graph. America Online is about 12 percent; Microsoft, 10 percent; Yahoo 27 percent; Terra Lycos, 17 percent; About, 23 percent. d. A circle graph. America Online is about 12 percent; Microsoft, 10 percent; Yahoo 25 percent; Terra Lycos, 25 percent; About, 20 percent. Please select the best answer from the choices provided A B C D
Answers
Answer:
A
Explanation:
PLEASE HELP
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:
Solution B is saturated and solution A is unsaturated
Explanation:
Saturated solution contains the maximum concentration of a solute dissolved in the solvent (usually water) and if extra solute is added to saturated solution, that solute will not dissolve.
Unsaturated solution means that more of a substance can be dissolved (in this example salt).
You plan to use the water displacement method to
determine if a ring is pure silver. Each of these tools Is
required, EXCEPT
A balance
A stopwatch
A measuring cup filled with water
A density of elements chart
Answers
Answer: A stopwatch
Explanation:
You don’t needed
A student requires all of them except a balance. The correct option is A.
What is the water displacement method?Students calculate the volume of various rods that have the same mass using the water displacement method. Each rod's density is calculated, and the distinctive densities of each material are used to distinguish the five rods.
Then, to explain why various rods have varied densities, students think about the connection between the mass, size, and arrangement of atoms. The periodic table will be briefly introduced to the class.
The volume displacement method is often used to determine the volume of an object with an irregular shape. This technique involves submerging an object into a known amount of water; as a result, the water level will rise.
Therefore, A student requires all of them except a balance. The correct option is A.
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Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by volume. For example, E10 is a mixture of 10% ethanol and 90% gasoline. How much E7 should be mixed with 3000 gal of E10 to make an E9 mixture? Part: 0 / 4 Part 1 of 4 Let x represent the amount of a mixture (in gal) containing 319. ethanol. 3000 gal is the amount of E10 mixture containing 10% ethanol. Therefore, is the amount of the resulting E9 mixture containing 906 ethanol
Answers
To make an E9 mixture 8657.14 gal of E7 should be mixed with 3000 gal of E10
Given to us is the amount of ethanol in the E10 mixture is 10% of 3000 gallons:
Ethanol in E10 = 10% × 3000 gal = 0.10 × 3000 gal = 300 gal
To solve this problem, we can set up an equation based on the amount of ethanol in each mixture.
Let x represent the amount of E7 mixture (in gallons) that needs to be added to the E10 mixture to obtain the desired E9 mixture.
The amount of ethanol in the E7 mixture is 7% of x gallons:
Ethanol in E7 = 7% × gal = 0.07 × gal
The resulting E9 mixture will contain 9% ethanol of the total volume of 3000 + x gallons:
Ethanol in E9 = 9% × (3000 + x) gal = 0.09 × (3000 + x) gal
According to the problem, the resulting E9 mixture contains 906 gallons of ethanol:
Ethanol in E9 = 906 gal
Now we can set up the equation:
Ethanol in E10 + Ethanol in E7 = Ethanol in E9
300 gal + 0.07x gal = 906 gal
Subtracting 300 gal from both sides:
0.07x gal = 606 gal
Dividing both sides by 0.07:
x = 606 gal / 0.07
x = 8657.14
Therefore, approximately 8657.14 gallons of E7 mixture should be mixed with 3000 gallons of E10 to make an E9 mixture.
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Complete question: Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by volume. For example, E10 is a mixture of 10% ethanol and 90% gasoline. How much E7 should be mixed with 3000 gal of E10 to make an E9 mixture?
What is the percent sodium in sodium chloride?
Answers
The total mass of sodium chloride is 58.44 g/mol.
The mass of sodium is 22.99 g/mol.
To find the percent sodium in sodium chloride can be found by dividing the amounts.
\(\frac{22.99}{58.44}\approx0.39\)Therefore, the percent sodium is 39%.
If the atomic number of Lithium is 3 and its mass number is 7, how many protons, electrons, and neutrons does a neutral
atom of Li have
Answers
Answer:
Protons = 3
Neutrons = 4
Electrons = 3
Explanation:
For every atom, the atomic number is equal to the number of protons.
In a neutral atom (atom with no charge) the number of protons is equal to the number of electrons.
To calculate neutrons subtract the number of protons (atomic number) from the rounded molar mass:
7 - 3 = 4 neutrons
How do the particles in s waves move
Answers
____ is the amount of matter in an object. Question 1 options: Matter Gravitational Pull Mass Weight
Answers
Answer:
It's Mass
Explanation: I took the quiz
Have a good day!
Mass is the amount of matter in an object. Therefore, option C is correct.
What is mass?Mass can be defined as an intrinsic property of a body. mass can be described as the quantity of matter in a body. Different atoms and different particles with the same amount of matter have nonetheless different masses.
Mass can be experimentally measured by the body's inertia, meaning the resistance to acceleration when a net force is applied. The mass determines the strength of its gravitational attraction to other bodies.
The SI base unit of measurement of mass is the kilogram (kg) and it is not the same as weight. Mass is generally determined by measuring the weight using a spring scale, rather than a balance scale and comparing it to known masses.
An object on the Moon will weigh less than it does on Earth due to the lower gravity but still have the same mass. Weight can be defined as a force, while mass is the property that determines the strength of this force.
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the volume of water in a 100 ml graduated cylinder was recorded by several student in a group. their recorded volumes are similar, but vary by 0.01 ml
Answers
The volume of water in a 100ml graduated cylinder was recorded by several students in a group . thier recorded volumes are similar , but vary by 0.01 ml , this variation shows the uncertainty in measurements.
Uncertainty is defined as the quantification of the doubt about the measurement result. Error is the difference between a measurement result and the measured value and uncertainty describes the reliability of assertion that stated measurement result represents value of measured.
The marking on a 100 ml of graduated cylinder are every 1 ml . so the volume can be measured to the accuracy of ±0.01 ml .
Thus,The volume of water in a 100ml graduated cylinder was recorded by several students in a group . thier recorded volumes are similar , but vary by 0.01 ml , this variation shows the uncertainty in measurements.
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for a molecule to exhibit hydrogen bonding the h must be covalently bonded to a?
Answers
Answer:
: fluorine, oxygen, or nitrogen.
Explanation:
Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of three elements: fluorine, oxygen, or nitrogen.
Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of three elements: fluorine, oxygen, or nitrogen. These three elements are so electronegative that they withdraw the majority of the electron density in the covalent bond with hydrogen, leaving the H atom very electron-deficient. The H atom nearly acts as a bare proton, leaving it very attracted to lone pair electrons on a nearby atom.
can someone please help!? i’ll mark you as brainliest
Answers
Answer:
26
Explanation:
Answer:
Reactants: NaBr and CA(OH)2
Products: CaBr and NaOH
Explanation:
Reactants are always on th left side of the equation and products on the right side
Tokyo, Japan is 8817.6 km from california. How many milimeters is this? Answer in scientific notation.
Answers
Hope this helps!
How can you drop two eggs the fewest amount of times, without them breaking? Whoever gets this right I will mark them brainlyest. (don't know if I spelled that right)
Answers
Answer:
Okay well simply drop it from one inch on to the ground and it won't break and you could put it into a basket with bubble wrap.
Explanation:
Well if you wrap the egg into bubble wrap a few times them put it into a basket (its your choice) then it won't break because the bubble wrap will just pop a few times but sometimes it depends on where you are dropping it from.
Have a blessed day bye! ;)
Selenium
Find
a) highest energy level
b) inner-energy levels
c) unpaired electrons present
d) pairs of electrons present
e) filled orbitals present
f) unfilled orbitals present
g) empty orbitals present
h) the charge of selenium when it is stable
Answers
Answer:
its B
Explanation:
i did the test yesterday
The configuration for the selenium subatomic particle with the maximum energy content is 4 s 2 followed by 4 p 4 point.
Explain electron configuration of selenium.
For selenium, the fundamental notation is [Ar]3d104s24p4. It has a Lewis structure. Due to the fact that they are not in the outer shell, which is the primary energy level 4, the ten 3d electrons of selenium are not visible. Selenium is paramagnetic because it possesses two unpaired electrons in the 4p-orbital.
Tellurium and polonium are also members of the sulfur family, which includes selenium. This family's outermost shell has six electrons. The electron configuration of selenium particularly is 2-8-18-6. Selenium can have a range of valence values thanks to the six electrons in its outermost shell.
Two electrons are present in the selenium atom's filled "4s" subshell. A "3d" subshell filled with 10 electrons. A "4p" subshell with four empty electrons. Selenium has an atomic number of 34. Thus, it possesses 34 electrons in total. With 6 valence electrons, the Se element needs 2 additional electrons to become stable, or we may say to complete its octet. Se's ion has a +2 charge as a result.
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The volume of container 2 i 27. 32 L. How many mole of the ga are in container 2?
Answers
The number of moles in container 2 is 33.3moles when the container has 27.32L of gas inside it
The number of moles of gas in container 2 can be calculated using the Ideal Gas Law:
n = PV/RT
where n is the number of moles of the gas with known volume,
P is the pressure (assumed to be 1 atm for ideal gases),
V is the volume (27.32 liters),
R is the ideal gas constant (0.0821 L·atm/mol·K) and
T is the temperature (assumed to be 273.15 K).
Plugging in the values, we get:
n = (1 atm)(27.32 L)/(0.0821 L·atm/mol·K)(273.15 K)
n = 33.3 mol
Therefore, there are 33.3 moles of gas in container 2.
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One quart of liquid is equal to 0.946 Liters. Four quarts is equal to one gallon. How many Liters are equal to 10 gallons of gasoline?
Answers
Answer:
37.84 Liters
Explanation:
(see picture)
If a screwdriver was used to pry open a door, where would scratches/striations be found?
Answers
Answer: Most likely around the knob area or by the bolts that hold the door up.
Explanation:
If you attempted to pry open a locked window with a screwdriver, the screwdriver would leave a tool mark on the window and windowsill.
The impressions made by a tool when it comes in contact with an object are called as tool marks. These tool marks exhibit a variety of impressions depending upon the type of tool, its shape and its use. They are classified into different types depending upon the force with which they are made.
The study of tool marks is very useful in forensic science which includes information about the analysis of tool marks at the crime scene and in the laboratory, the interpretation and assessment of challenges for examination and interpretation and also the way in which tool mark evidence can be presented in a courtroom.
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What mass of Ca(OH)2 is required to react with the acetic acid (CH3CO2H) in 25.0 mL of a solution having a density of 1.065 g/mL and containing 58.0% acetic acid by mass?
Answers
Answer:
9.53g
Explanation:
Given the following :
Density = 1.065g/mL
Volume of solution = 25.0mL
% of acetic acid =58%
Molar mass of CH3COOH = 60.05g/mol
Molar mass of Ca(OH)2 = 74.093g/mol
Reaction:
2CH3COOH + Ca(OH)2 ----> Ca(CH3Co2)2 +2H2O
Volume of solution × density × % of CH3COOH × (mole per molar mass CH3COOH) × (mole of Ca(OH)2 per mole of CH3COOH) × (molar mass of Ca(OH)2 per mole of Ca(OH)2)
25mL × (1.065/1) × (58/100) × (1 / 60.05) × (1 / 2) × (74.093 / 1)
25 × 1.065 × 0.58 × 0.0166527 × 0.5 × 74.093
= 9.526g
Light ' can cover 744,000 miles in just four seconds. What is the speed of light in miles per second? I
Answers
Answer:
186,000 m/s
Explanation:
If you divide 744,000 by 4 seconds you get 186,000 m/s since it can travel that far in 4 seconds
Answer:
186000
Explanation:
speed = distance/time
so the answer is 744000/4
= 186000 miles per second