Order the steps required to extract a dichloromethane solution with aqueous hydrochloric acid.
Transfer the "Organic Layer" back to the empty separatory funnel.
b. Add an equivalent volume of aqueous acid to the dichloromethane layer in the separatory funnel.
h. Label this beaker "Aqueous Layer".
Remove the cap.
Label the beaker "Organic Layer".
Make sure the stopcock is closed.
Repeat all steps. Drain the bottom layer into a labeled beaker.
C. Cap the separatory funnel with a glass or Teflon stopper.
e. Place the separatory funnel back in the Iron ring.
Remove the funnel from the iron ring and shake vigorously to mix the layers, periodically venting to release pressure. Drain the remaining liquid into a labeled beaker. Suspend a separatory funnel using an iron ring and ring stand. g.
Allow the layers to physically separate in the funnel. Transfer the organic (dichloromethane) layer to the funnel.
The formatting of the question is a bit scrambled: I'm not sure if there are separate steps that have been unintentionally consolidated into a seemingly discrete step, nor am I sure which letters actually correspond with which step(s). So, for clarity's sake, I treated every sentence as its own step and arranged all of them accordingly. Hopefully, you can then reorganize them according to the labeled steps as you have been provided.
Suspend a separatory funnel using an iron ring and ring stand. Make sure the stopcock is closed. Transfer the organic (dichloromethane) layer to the funnel. Add an equivalent volume of aqueous acid to the dichloromethane layer in the separatory funnel. Cap the separatory funnel with a glass or Teflon stopper. Remove the funnel from the iron ring and shake vigorously to mix the layers, periodically venting to release pressure. Place the separatory funnel back in the Iron ring. Allow the layers to physically separate in the funnel. Remove the cap.Drain the bottom layer into a labeled beaker. Label the beaker "Organic Layer". Drain the remaining liquid into a labeled beaker. Label this beaker "Aqueous Layer". Transfer the "Organic Layer" back to the empty separatory funnel. Repeat all steps.Notes:
The letters have been replaced with numbers only to clarify the order of the steps. No changes were made to the steps themselves, including any stylistic errors.A very few set of sequential steps might be interchangeable, but the steps as separated and organized above is in accordance with standard liquid-liquid extraction protocol.Determining which layers are the "organic" and "aqueous" layers (i.e., whether the organic/aqueous layer, or vice-versa, is on the bottom/top ) is a nontrivial step; for this reason, when actually doing such extractions, the beakers (or whatever vessel) into which the layers are drained at any step are sometimes labeled "top layer" and "bottom layer" in case you misidentify which layers are, in fact, the organic and aqueous layers. Oftentimes, the organic layer is on top of the aqueous layer as many common organic solvents are less dense than water. Halogenated organic solvents, like dichloromethane, are one of the exceptions, and so will generally comprise the bottom layer.what type of consumer are bears?
In the modern Periodic Table of the Elements, in order of what property are the elements arranged?
atomic number?
date of discovery?
number of neutrons?
Reactivity with hydrogen?
Answer:
They are organized by atomic number, hence the reason for 1,2,3,4, you get where im goin'?
Explanation:
Complete the Lewis Dot structure for the molecule H-C≡N and determine how many bonding and non-bonding electrons nitrogen has:
Answer:
I believe that in H-C≡N, Nitrogen has 4 bonding electrons and 2 non-bonding electrons.
(:
Explanation:
Anions have a _______ charge and cations have a _______ charge
Explanation:
Anions have a negative charge resulting from the gain of one or more electrons to become stable.
Cations have a positive charge due to the loss of two or more electrons in order to become stable or have a noble gas configuration.
Hope this helps you
what are the coefficients for the reaction _Cl2O5+_H2O>_HCIO3 once it is balanced
Answer:
1.9472857e+56
Explanation: Ask Google
A crest of a wave with an amplitude of 5 meters intersects the through of another wave with an amplitude of 2 meters. What is the resulting amplitude?:
A. 3 meters
B. 5 meters
C. 7 meters
D. 2 meters
A crest of a wave with an amplitude of 5 meters intersects the through of another wave with an amplitude of 2 metre . the resulting amplitude is
A. 3 meters
The resultant amplitude will be 7 meters.
We have crests of two different waves.
We have to find the resulting amplitude when both the waves intersect.
What is crest of a wave ?A crest point on a wave is the maximum value of upward displacement within a cycle.
According to the question -
Amplitude of wave 1 = 5 meters.
Amplitude of wave 2 = 2 meters.
Assuming that both waves are in phase, when the two waves which are
in-phase interfere, they interfere constructively. The final amplitude will be -
A(f) = A[1] + A[2] = 5 + 2 = 7 meters.
Hence, the resultant amplitude will be 7 meters.
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What would be the result of adding one proton to an atom
Answer:
Protons carry a positive electrical charge and they alone determine the charge of the nucleus. Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number. For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium.
i hope this helps!
write the unit of electric charge
Answer: the electric charge is the atomic number
Foods cook faster when placed in a pressure cooker. This is because the pressure on the surface of the water is
Answer:higher than and higher than
Explanation:
Electro magnetic waves are blank waves
What’s the blank PLEASE HELP DUE IN 25 MINUTES!!!!
Answer:
Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. Hope it helps ;)
The two alternative chair conformations of cis-1-bromo-2-methylcyclohexane differ in their Gibbs free energy. Using the data for ΔG (Axial-Equatorial) for monosubstituted cyclohexanes at room temperature (25ºC): Axial → Equatorial Group ΔG° (kJ/mol) Group ΔG° (kJ/mol) -0.8 -5.9 -2.4 -7.3 -3.9 1,2-gauche 3.8 Calculate the absolute value of the difference in the Gibbs free energy between the alternative chair conformations. kJ/mol Which group in this compound is in axial position in the energetically preferred chair conformation? _______
Answer:
a.) 4.9kj/mol
b.) -Br group
Explanation:
first all of your question did not make mention of the groups in the table.
here it is:-
axial group ΔG°(kj/mol) group ΔG°kj/mol
CN -O.8 NH₂ -5.9
Br -2.4 CH₃ -7.3
OH -3.9 1,2-gauche 3.8
The 6 axial groups are bonded one on each carbon and also they are parallel and also alternate from up to bottom.
a.)
to get the absolute ΔG;
ΔG = -2.4-(-7.3)
= -2.4+7.3
= 4.9KJ/MOL
b.)
the axial group in this compound which is in the axial position in the energetically preferred chain conformation is the -Br group
Please check attachment for diagram
13.Surface tension is a property of
A. liquids, only
B. solids, only
С.gases and solids
D.gases and liquids
Answer:
I think it is liquid's only.
Explanation:
Answer:
Liquids only i am not sure but i think its A
HELP!!!!
An unknown gas effuses at a rate of 2.0 times the rate of CL2. What is the molar mass of the unknown gas?
The molar mass of the unknown gas is 17.75 g/mol
From Graham's law of diffusion, we understood that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas as shown below:R ∝ [tex]\frac{1}{\sqrt{M}}[/tex]
Expanding further, we have
[tex]\frac{R_{1} }{R_{2} } = \sqrt{\frac{M_{2}}{M_{1}} }[/tex]
Where
R₁ and R₂ are the rate of diffusion of the individual gas
M₁ and M₂ are the molar masses of the individual gas.
With the above information in mind, we can obtain the molar mass of the unknown gas as follow:
Let R₁ be the rate of the unknown gas
Let R₂ be rate of Cl₂ gas
Let M₁ be the molar mass of the unknown gas
Let M₂ be the molar mass of the Cl₂ gas
From the question given above, we were obtained the following:
Rate of the unknown gas = 2 times the rate of Cl₂ i.e
R₁ = 2R₂Molar mass of Cl₂ (M₂) = 2 × 35.5 = 71 g/mol
Molar mass of the unknown gas (M₁) =?[tex]\frac{R_{1} }{R_{2} } = \sqrt{\frac{M_{2}}{M_{1}} }\\\\\\\frac{2R_{2}}{R_{2} } = \sqrt{\frac{7 1}{M_{1}} }\\\\2 = \sqrt{\frac{7 1}{M_{1}} }[/tex]
Square both sides[tex]2^{2} = \frac{71}{M_{1}} \\\\4 = \frac{71}{M_{1}}[/tex]
Cross multiply4 × M₁ = 71
Divide both side by 4[tex]M_{1} = \frac{71}{4}[/tex]
M₁ = 17.75 g/molTherefore, the molar mass of the unknown gas is 17.75 g/mol
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Activities that shows the nature and goals of anthropology,Sociology and Political Science
To answer the question effectively, we will talk about the key words in the question.
ANTHROPOLOGY, SOCIOLOGY AND POLITICAL SCIENCE.
ANTHROPOLOGY; This is the study of human kinds in all times and places,it also entails humanistic study which includes our prehistoric origins and contemporary human diversity as well as topics like social change,globalization,human origin and the world history.
The activities that shows the nature and goals of anthropology includes;
- Looking at ones own culture in a more objective way like an outsider.
- Discovering the things that make people more different from one another.
- Producing new theories and knowledge about human home and their behaviors.
- Discovering/finding out what all people have in common.
There are four fields of anthropology; Linguistic anthropology, Biological anthropology, Archeology and cultural anthropology.
SOCIOLOGY; This is the scientific study of human civilization.
It is systemic and studies of groups and societies that people build
and the effect these have on their behavior.
Sociology greatly focuses on various social connections,
structures, organizations, processes and institutions.
The activities that show the goals and nature of sociology includes;
- Broadening our familiarity on facts about sociology.
- Critically studying the nature of humanity.
- Exposing our minds to the diverse perspectives on attaining the truth.
- Obtaining possible theories about the society.
- Understanding and appreciating that all things in the society are interdependent with each other.
Sociology brings together inputs that are composed of frequent forms and manners,they include; view points, consolidated values, attitudes and the norms of social institutions.
The different branches of sociology are; social psychology,social organisation, applied sociology, population studies, sociological theory and research,human ecology,social change.
POLITICAL SCIENCE; This is a discipline in academics that deals with the study of political processes, institutions, governments and behaviors of people.
It studies the complex behaviors of the people in power, various political actors, such as the government administration, opposition ad the subjects which are the masses.
Anthropology, sociology and political science are areas of social science, whose main objective is to study society in historical, social and cultural contexts.
Anthropology is the science that studies the human being in depth considering biological, social and cultural aspects. Its objective is to understand the development of man in these aspects.Sociology has as its nature the study of societies, its objective is to understand the behavior of man in social formations.Political science is the science that studies the systems of government and formation of political power in society. Its aim is to better understand political institutions and their impact on society.Therefore, the social sciences seek to analyze and understand man through society, culture, economy and politics, with the aim of contributing to the development of a more egalitarian society with a better quality of life.
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Ammonium sulfate, an important chemical fertilizer, can be prepared by the reaction of ammonia with sulfuric acid according to the following balanced equation:
2 NH3(g) + H2SO4(aq) → (NH4)2SO4(aq)
If a reaction vessel has 3.29 L of NH3 at 31.5°C and 22.7 atm, how many grams of H2SO4 are needed to completely react with it?
_________________ g H2SO4. Do NOT enter unit. Report your final answer with 3 SFs.
Answer:
Ammonia reacts with sulphuric acid to give the fertilizer ammonium sulphate.
Explanation:
At STP, a 50.-gram sample of H2O() and a100.-gram sample of H2O() have
Answer:
2
Explanation:
because it same volume
What conclusion is best supported by the decay chain?
A) Each alpha decay results in an isotope that is slightly more stable than the original isotope.
B) Each beta decay results in an isotope that is slightly more stable than the original isotope.
C) The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
D) The mass number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Answer:
C. The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Answer:
c. The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Explanation:
got it correct on quiz
The table lists some compounds found in foods and their formulas.
Based on this information, which of these statements is NOT true?
CLEAR
Answer:
A
Explanation:
the number of molecule won't be twice as fructose has 12 hydrogen molecules and lactose has 22 hydrogen molecules
From the given statements, the statement saying that the number of atoms in Lactose is twice the number of atoms in Fructose is not correct. Thus option A is correct.
The given molecules in the list are Glutamine, Lactose, fructose, and Sorbitol.
The number of atoms in the following compounds is:
Glutamine = 20 atomsLactose = 45 atomsFructose = 24 atomsSorbitol = 26 atoms.Statement A says that the number of atoms in Lactose is twice the number of atoms in Fructose. The twice atoms of Fructose are 48 atoms. The number of atoms of lactose is 45.
Thus statement A is incorrect. Thus option A is correct.
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are all physical reactions reversible?
A) No, while some such as freezing are, others, such as breaking glass aren't.
B) Yes, every single one of them are!
Answer: answer is A
Explanation:
Suppose you mix Na2SO4 and KCl solutions according to the given equation.
Na2SO4 (aq) + 2 KCl(aq) + 2 NaCl(aq) + K2SO4 (aq)
What evidence of a reaction do you expect to see?
Select one:
A precipitate should form.
A gas should form.
Water should form.
Ο Ο
No reaction should occur.
Answer:
No reaction should occur
Explanation:
Water cannnot be made from the components
Nothing will be released as a gas
Both products are soluible in water therefore will not form a precipitate.
If I mix a solution of Na2SO4 and KCl, no reaction should occur.
Whether or not, a reaction occurs when two substances are mixed depends on the respective positions of the substances in the electrochemical series.
Now, we are expecting the reaction; Na2SO4 (aq) + 2 KCl(aq) + 2 NaCl(aq) + K2SO4 (aq) to occur. The big question is, between sodium and potassium, which is higher in the electrochemical series?
A little look into the image attached shows that potassium is higher than sodium in the series so the reaction is possible.
However, the both products are aqueous, they are both soluble in water hence no visible reaction occurs.
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HELPPPPPPPPP
50. How many joules of heat must be absorbed by 0.375 kg of water to raise its temperature by 45.0 to 70.0°C. Specific heat of water is 4.184 J/gC or 1.0 cal/gC
51. What mass of water can be heated from 25.0 to 50.0°C by the adding of 2825 Joules?(Cp of H2O=4.184 J/g °C)
Answer:
50. 54,915 J
51. 27.0 g
Explanation:
The dimensional analysis tells you how to compute these. Multiplying specific heat, J/(g·°C), by the product of mass and temperature change will give you energy.
__
50. (375 g)((70 -45) °C)(4.184 J/(g·°C)) = 54,915 J
__
51. M((50 -25)°C)(4.184 J/(g·°C)) = 2825 J
M = 2825/104.6 g ≈ 27.0 g
which is not possible sign of chemical change
A:color change
B:light given off
C:heat given off
D:a change of state
Answer:
A. color change
Explanation:
changing the color of a metal does not change its physical properties.
hope it helps.
boiling and melting points exploration
Answer:
Boiling- 212° F melting- 32°F
Explanation:
How many different types of elements are there in acetone C3H6O?
Answer:
3
Explanation:
Answer:
10
Explanation:
Find the volume in milliliters of 2.00 mol of an ideal gas at 36°C and a pressure of 1120 torr.
Use the ideal gas law and the appropriate Rvalue:
R=0.0821 atmL/mol. K
R= 8.31 kPa • L/mol •K
R= 62.4 torr • L/mol · K
mL
Answer:
V = 34430 mL
Explanation:
Given data:
Volume in mL = ?
Number of moles of gas = 2.00 mol
Temperature = 36°C (36+273= 309K)
Pressure of gas = 1120 torr
Solution:
Formula:
PV = nRT
V = nRT/P
V = 2.00 mol ×62.4 torr • L/mol · K × 309K / 1120 torr
V = 38563.2 torr • L / 1120 torr
V = 34.43 L
L to mL
34.43 L ×1000 mL / 1 L
34430 mL
What is the formula weight (amu) of the molecule H2O? Use atomic masses of H and O as 1.008 amu and 16.00 amu respectively. Report answer to 4 sig figs.
Answer:
Formula weight of H₂O molecule is 18.02 amu.
Explanation:
Given data:
Formula weight of H₂O = ?
Atomic mass of H = 1.008 amu
Atomic mass of O = 16.00 amu
Solution:
Formula weight:
"It is the sum of all the atomic weight of atoms present in given formula"
Formula weight of H₂O = 2×1.008 amu + 1×16.00 amu
Formula weight of H₂O = 18.02 amu
Thus, formula weight of H₂O molecule is 18.02 amu.
Which statement best describes the nuclear model of the atom. A) negative charges dispersed in a positively charged cloud B) positive charges dispersed in a negatively charged cloud C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud D) small, dense negative nucleus surrounded by a diffuse positively charged cloud
Answer:
D.) small, dense negative nucleus surrounded by a diffuse positively charged cloud
Explanation:
I am not 100% sure but the reason I think this is the answer is because Protons and Neutrons are in the nucleus. Protons being positively charged and neutrons being negatively charged. Again, I do not know for sure, but I think D is the answer.
The statement that best describes the nuclear model of the atom is C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud.
The atom is made up of 3 kinds of particles: protons, neutrons and electrons.
Protons (positive charge) and neutrons (zero charge) are in the nucleus, which concentrates 99% of the mass of the atom in 1% of the space. This is why is it positive and very dense.
Electrons (negative charges) are orbiting the nucleus in diffuse negatively charged clouds known as orbitals.
The statement that best describes the nuclear model of the atom is C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud.
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Ag3PO4 what is the compound with this formula
Answer:
silver (III) phosphate
Explanation:
What is the relationship between density and viscosity?
Answer:There is no relationship between the viscosity and density of a fluid. While viscosity is the thickness or thinness of a fluid, density refers to the space between its particles. However, both properties are affected by temperature. When a fluid is heated, its particles move far apart, and it also becomes less viscous.
