The area under the curve in a PV diagram represents the work done to the gas. If the area is maximum, the amount of work completed will be at its highest. In this scenario, area is maximal when we take path A.
The related changes in volume and pressure in a system are represented by a pressure-volume diagram, also known as a PV diagram or a volume-pressure loop. Thermodynamics, cardiovascular physiology, and respiratory physiology all frequently use them. The fourth and most basic state of matter is gas (the others being solid, liquid, and plasma). It's possible for atoms to make up a pure gas.
W = P*(change in volume) = 1.7*1.01*5.8*105 is the formula for the work completed.
W = 9.96*10^5J
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which of the following statements correctly describe dipole-dipole forces? select all that apply.
Dipole-dipole forces are the forces of attraction between two polar molecules.
Dipole-dipole, forces arise from the attraction between the like poles on two adjacent molecules.
Any molecule that contains polar covalent bonds will exhibit dipole-dipole forces.
The larger the dipole moment the greater the dipole-dipole force between two molecules.
Dipole-dipole forces are forces of attraction between two polar molecules. Larger the dipole moment, greater is the dipole-dipole force between two molecules.
What is meant by dipole-dipole forces?Attractive forces between the positive end of one polar molecule and the negative end of another polar molecule is called dipole-dipole forces. Dipole-dipole forces have strengths that from 5 kJ to 20 kJ per mole.
As polar molecules have a positive and negative charge ends, positive charge end of a molecule attracts the negative end of adjacent molecule with the same or different kind of molecule. This attraction between two polar molecules is called dipole-dipole interaction.
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Draw The Lewis Structure For Bromoethane C2H5Br . Be Certain You Include Any Lone Pairs.
The Lewis Structure For Bromoethane C2H5Br Include Any Lone Pairs.is attached below:
Lewis structure, also known as electron dot structures or Lewis electron dot structures, are diagrams that display the interatomic interactions of molecules as well as any potential lone pairs of electrons. According to the Lewis rule, hydrogen atoms always occur at the extremities of a chain of atoms and only ever form single bonds. Bonds between hydrogen and carbon, nitrogen, or oxygen are frequent. Except for O2, O3, and peroxides, oxygen atoms typically do not connect with one another.
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a 1.00 l flask is filled with 1.25 g of argon at 25 ∘c. a sample of ethane vapor is added to the same flask at constant volume and temperature until the total pressure is 1.000 atm .
a) Partial pressure of argon is calculated as 0.763 atm ; b) Partial pressure of ethane is calculated as 0.237 atm.
What is an ideal gas law?Gases obey an equation of state known as the ideal gas law that is PV = n RT, where n is number of moles of gas and R is the gas constant, 8.314 joules per kelvin per mole.
The ideal gas equation is ,
PV = n RT
P is Pressure of the argon gas
Given, V= Volume of the gas is 1.00 L, mass = 1.25gm
Given, T= Temperature of the gas is 25°C = 298 K (0°C = 273 K)
We know that, R= Gas constant = 0.0821 atm L/K mol
n= moles of gas = given mass/molar mass
= 1.25g / 40g/mol
= 0.0312 moles
P= n RT/V
= (0.0312 * 0.0821 * 298)/1
= 0.763 atm
Partial pressure of argon is 0.763 atm.
In Dalton's law, total pressure is the sum of individual pressures.
P total = P1 +P2
P total = P Ar + P ethane
P ethane = 1 - 0.763
= 0.237 atm
Partial pressure of ethane is 0.237 atm.
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a. positrons and electrons combine to form gamma rays b. an atomic nucleus loses two or more alpha particles c. small nuclei combine to form an atom of a greater atomic number d. an atomic nucleus splits into two fragments
A nucleus loses two protons and two neutrons when it emits an alpha particle (4. 2He). As a result, the mass number A reduces and the atomic number Z drops by two.
What occurs when a positron is lost from the nucleus of an atom?Positron decay often takes place in big radionuclides that are "proton-rich" because positron emission reduces the proton number compared to the neutron number. Nuclear transmutation, which is caused by positron decay, transforms an atom of one chemical element into an atom of an element with an atomic number that is one unit lower.
How do gamma rays become created?GAMMA RAYS'S SOURCES
The universe's hottest and most energetic objects, including as neutron stars and pulsars, supernova explosions, and regions near black holes, all produce them. Gamma waves on Earth.
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When using hot water to manually sanitize in a three compartment sink what temp should the water be.
Depending on the sink you're filling, the three-compartment sink's required water temperature varies. For the first and second sinks to comply with FDA regulations, the water must be at least 110 degrees Fahrenheit. The third sanitizing sink's water must be 171 degrees Fahrenheit or hotter if you intend to use it.
The three-compartment sink can be used as a suitable hot water sanitizing method. The object is submerged in water that is at least 170°F in temperature for no less than 30 seconds as the last step of the wash, rinse, and sanitizing procedure.
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what mass (in grams) of mg(no3)2 is present in 107.7 ml of a 0.156 m solution of mg(no3)2 ?
According to the supplied information, 2.49 g of Mg(NO3)2 weighs in at 107.7 ml in a 0.156 m liquid of Mg(NO3). ₂
What are mass and the mass formula?The amount of atoms that make up every item or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a chair, a sofa, your bed, a soccer, a tumbler, and even air. The mass of a thing determines whether it is light or heavy.
The mass of an item may be calculated by multiplying its density by its volume since densities is a metric of mass per volume.
Briefing:Molarity of Mg(NO₃)₂ = 0.156 M
volume = 107.7 mL = 0.1077 L
Molarity = moles / volume
0.156 = moles / 0.1077
moles = 0.0168
molar mass of Mg(NO₃)₂ = 148.3 g/mol
moles = mass / molar mass
0.0168 = mass / 148.3
mass of Mg(NO₃)₂ = 2.49 g
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1. Draw the Lewis structure for SeOBr2 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. Do not draw double bonds to oxygen atoms unless they are needed for the central atom to obey the octet rule. a. What is the electron-pair geometry for Se in SeOBr2 ? b. What is the the shape (molecular geometry) of SeOBr2? 2. Draw the Lewis structure for SeF6 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. a. What is the electron-pair geometry for Se in SeF6 ? b. What is the the shape (molecular geometry) of SeF6?
the Lewis structure for SeOBr2
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Determine the oxidation number (oxidation state) of EACH element in the following six compounds.
a. CuCO3 e. SO2
b. CH4 f. (NH4)2 CrO4
c. IF
d. CH2Cl2
The oxidation number of Cu, C and O in CuCO₃ is, (+2), (+4) and (-2), The oxidation number of C and H in CH₄ is (-4) and (+1). The oxidation number of I and F in IF is, (+1) and (-1). The oxidation number of C, H and Cl in CH₂Cl₂ is, (0), (+1) and (-1).The oxidation number of S, and O in SO₂ is, (+4) and (-2). and for (NH₄)₂CrO₄, N has an oxidation number of -3, O has an oxidation number of -2, and Cr has an oxidation number of +6 in the compound (NH₄)₂CrO₄. The H in(NH₄)₂CrO₄ has an oxidation number of 1.
How does oxidation number work?The number of electrons that a specific atom or ion has either gained or lost in comparison to a neutral atom is known as the oxidation number. The oxidation number of a free element is always zero. Since the compound loses electrons when it is oxidized, the meaning was enlarged to include further reactions in which electrons are lost, regardless of the presence of oxygen.
A free element's oxidation number is always zero.
A monatomic ion's charge and oxidation number are the same.
Hydrogen (H) has an oxidation number of 1, but when mixed with fewer electronegative elements, it becomes negative.
In most compounds, oxygen (O) has an oxidation number of 2, but peroxides have a -1.
A Group 1 element's oxidation number in a compound is one.
In a compound, a Group 2 element's oxidation number is +2.
A Group 17 element in a binary compound has an oxidation number of 1.
In a neutral molecule, all of the atoms' oxidation numbers add up to zero.
the total of a polyatomic particle's oxidation numbers
a) CuCO₃
Let Cu be in the oxidation state "x."
As, the oxidation number of carbon is (+4) and oxidation number of oxygen is (-2).
so CuCO₃=0
Cu+C+3O=0
x+ 4+3(-2) =0
x+(-2) =0
x =+2
Cu has an oxidation state of (+2)
b) CH₄
As, the oxidation number of hydrogen is (+1)
so, CH₄ =0
C+4H =0
C +4 = 0
C= -4
C is in the oxidation state (-4)
c) IF
I should be in the "x" oxidation state.
In a binary compound, a Group 17 element's oxidation number is -1. Iodine and fluorine both fall under the 17th category.
IF = 0
I+F+0
I+(-1) =0
I= +1
I is in the (+1) state of oxidation.
d) CH₂Cl₂
As, the hydrogen oxidation number and oxidation number of a Group 17 element (Cl) in a binary compound is -1.
CH₂Cl₂ =0
C+2H+2Cl =0
C +2+(-2) =0
C = 0
e) SO₂
As, the oxidation number of oxygen is (-2).
SO₂ =0
S+2O = 0
S +(-4) =0
S = +4
s is in the (+4) state of oxidation.
f). (NH₄)₂CrO₄
(NH₄)₂CrO₄ is from (NH₄)⁺ + CrO₄²⁻
so
NH₄ =+1, since hydrogen is +1
N+ 4H = +1
N +4 =+1
N = -3
and
CrO₄ = -2
Cr +4 O = +2, since O = -2
Cr +4 (-2) = -2
Cr+ (-8) = -2
Cr = +6
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they are substances that produce ions when they dissolve in water.
Electrolytes are substances that produce ions when they dissolve in water.
What are electrolytes?
When some substances are dissolved in water, they undergo physical or chemical changes, creating ions in solution. These substances form an important class of compounds called electrolytes. Substances that do not release ions when dissolved are called non-electrolytes. A substance is said to be a strong electrolyte if the physical or chemical process that produces ions is inherently 100% efficient (all dissolved compounds produce ions). A solute is said to be a weak electrolyte if only a relatively small portion of the solute undergoes ion production processes.
By measuring the electrical conductivity of aqueous solutions containing substances, substances can be identified as strong, weak, or non-electrolyte. To conduct electricity, a substance must contain free-moving charged species. The best known is the conduction of electricity through metal wires. In this case, the mobile charged unit is the electron.
Therefore, Electrolytes are substances that produce ions when they dissolve in water.
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How many electrons does a selenide ion (Se2- ) have?
Total Number of electrons that is present in selenide (se2-) ion is thirty six (36).
Selenium is a non-metal chemical element belonging to group sixteen(16) of the periodic table. This group is also called chalcogens. Along with selenium group sixteen also have sulfur, oxygen, tellurium, oxygen, polonium, livermium. Atomic number of selenium element is thirty four (34) , this means there are thirty four electrons and protons are there in a neutral element. Chemical symbol of selenium is se. Selenide (se2-) ion forms when a neutral selenium element accepts two electrons. Hence selenide (se2-) will have totally thirty six electrons. Since the number of electrons is two more than the proton charge is two negative charges.
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draw the correct products, in either order, for the following oxidative cleavage reaction.
The correct product of the reaction of 1-methylcyclopent-1-ene in basic medium and hydronium ion is 5-oxohexanoic acid.
What is oxidation reaction ?
An oxidation reaction takes place whenever oxygen interacts with a substance or an element. Taking hydrogen out of the reactant species is another way to describe the process of oxidation. The process of oxidation is the loss of electrons by a molecule, an atom, or an ion.
What is cleavage reaction?
Chemical bonds can be split apart through bond cleavage or bond fission. When a molecule is split into two or more pieces, this is generally known as dissociation.
The permanganate ion adds to the double bond in a cis fashion to form a cyclic permanganic ester.
The intermediate cyclic ester undergoes ready hydrolysis to yield a 1,2 diol.
When heated the diols undergo over-oxidation to form ketone or carboxylic acid depending upon the structure of alkene. When atleast one H atom is attached to alkene carbon carboxylic acid is formed. When both alkene carbon is substituted in both ends by alkyl group ketone is the end product.
Oxidative cleavage is a reaction shown by cyclic alkenes in the presence of oxidizing agent, potassium permanganate results in the formation of alcohols and carbonyls.
The double bond present in 1-methylcyclopent-1-ene undergoes oxidative cleavage in the presence of potassium permanganate in basic medium.
Therefore, the correct product of the reaction of 1-methylcyclopent-1-ene in basic medium and hydronium ion is 5-oxohexanoic acid.
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a certain radioisotope has a half life of 10.8 days. what percentage of an initial sample of this isotope remains after 34 days
You could easily draw this out by dividing the percentage by 2 every 7.45 days until you reached 35 days if the elapsed time (35 days) were a whole-number multiple of the half-life (7.45 days).
Sadly, it isn't the case, thus you must use the following formula:
At=Ao⋅(1/2)pow(t/t*1/2)
In this case:
At=100%⋅(12)pow(35 days/7.45 days)
At=100%⋅(12)pow(4.700
At=100%*0.038
At=3.8%
How long is a radioisotope stable for?The amount of time needed for a radioisotope to decay by half is called its radioactive half-life. Most radioactivity will be gone in a few days if an isotope has a half-life that is only a few hours or less.
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Why is CuSO_3 called copper (II) sulfite?
The Cu in the formula is where the Copper is found. The (II) is derived from the complex's copper's oxidation number. The SO3 ion is the source of sulfite.
Describe copper (Cu).
The chemical element copper (Cu) is a reddish, incredibly ductile metal belonging to Periodic Group 11 (Ib) that has an exceptional ability to conduct heat and electricity. In nature, copper can be found in its free metallic state.
What is the primary usage of copper?
Due to its ductility and excellent conductivity, copper is mostly used in electrical generators, home and auto wiring, and the wires in electronics like radios, TVs, computers, lighting, and motors.
What are the top 3 fascinating copper-related facts?
The 179,000 pounds of copper used to construct the Statue of Liberty. 400 pounds of copper are used in a typical home's electrical wiring, plumbing, and appliances. A typical automobile contains 50 pounds of copper. Every gold has a level of copper, even 24karat gold.
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8.1 Draw all possible elimination products that could be formed by the following reaction. There are 5 counting cis & trans isomers! HzC H2 (CH;)COH CHa CH3 HaC" Hz Hz CHa CH3
4-methyl 2-methylpropene, 1-pentene, and CHa CH3 are among the compounds.
How is cis to trans isomer converted?transisomer to cis-isomer Add trace iodine and heat the solution to 50 DEG C to convert it to the cis-isomer using a standard organic solvent (such as methanol, acetone, pyridine, or their deuterated reagent). In 1 to 10 minutes, the correspondence transisomer can be completely altered.
Which technique can be used to make trans alkenes?Alkynes are made to go through reduction with sodium in liquid ammonia in order to create trans alkenes. Alkyl halides produce: Alkyl halides are heated with alcoholic potash to produce alkenes.
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stable atoms have ____ paid of valence electrons
Answer: 8 electrons
Explanation:
Answer: 8 valence electrons
Explanation: This is because the maximum electron an energy level can hold is 8 making it a stable atom
a.) Using principles of atomic structure, explain why the atomic radius of Kr is less than the ionic radius of Se²⁻.
c.) Which structure, A, B, or C, minimizes the formal charges for each atom in SeO2F2? Justify your choice. (see image)
The boiling point of SeOF2 (diagram D) is less than the boiling point of SeOCl2 (diagram E).
f) Identify the type(s) of intermolecular force(s) that the two substances have in common. What about them?
g.) Explain the difference in boiling points based on the types and relative strengths of intermolecular forces.
a) The addition of two electrons to Se²⁻ increases the electron cloud
c) The compound B minimizes the formal charges
f) The structure D has the higher boiling point and the intermolecular force that the two molecules have in common is the dispersion forces.
g) There are strong dipole forces in D that does not exist in F
What is the atomic structure?We know that the atomic radius and the ionic radius are the parameters that does occur down the group and across the period. We know that down the group, the atomic radius would increase as we add more shells but across the period, the ionic radius would decrease as we add more nuclear charge.
Given the structures that have been shown, the structure B minimizes the nuclear charge as we can see that the octet of all the elements that are in the compound have been satisfied and there are no formal charges in the molecule.
Compound D has a higher boiling point than the compound E because the compound D is not symmetrical while the compound E is.
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How many molecules are in 0.400 moles of N2O5?
Answer:2.41 molecules
Explanation:
Answer:
2.41 molecules.
Explanation:
0.400 mol N2O5 contains 2.41 molecules N2O5.
1mole N2O5=6.022 × 1023molecules N2O5.
a 275.0 ml sample of o2 is collected over water at 60.0oc. the total pressure is 755. torr. what is the volume of the o2 at stp? (the vapor pressure of water at 60.0oc is 149. torr).\
a 275.0 ml sample of o2 is collected over water at 60.0oc. the total pressure is 755 torr is
Ptot = PH20+ P02
P02 = 766-149 torr= 606 torr
V2 = 180ml
What is torr?
A torr is a unit of pressure based on an absolute scale, defined as exactly 1/760 of standard atmospheric pressure. Therefore, 1 Torr corresponds exactly to 101325/760 Pascals. Historically, torr was thought to be the same as "millimeter of mercury", but later he was redefined by the two units to be slightly different.
Therefore, Ptot = PH20+ P02
P02 = 766-149 torr= 606 torr
V2 = 180ml,
A torr is a unit of pressure based on an absolute scale, defined as exactly 1/760 of standard atmospheric pressure.
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What causes comet tails to point away from the Sun?
As a result of the sun's radiation pressure, comet tails will always point away from the sun. Compared to the gravitational force acting in the direction of the sun, pushing them away from the sun.
The study of the chemical reactions that radiation has on the matter is known as radiation chemistry, a branch of nuclear chemistry. This field differs greatly from radiochemistry in that the material being chemically altered by radiation does not always need to contain radioactivity. As an illustration, consider how water is transformed into hydrogen gas and hydrogen peroxide.
Ionizing radiation interacts with the electrons of the absorber as it passes through matter, depositing energy in the process. Removing an electron from an atom or molecular link causes radicals and excited species to develop as a result of the radiation's interaction with the absorbing species. The radical species then continue to interact with one another or with molecules nearby.
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Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. In this reaction, dark silver sulfide, au2s, covers the surface of silver. When silver is polished, this coating of silver sulfide can be removed from the surface. This makes the silver shiny again. Enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient. ).
The balanced equation with correct coefficients is represented as follows:
2Ag(s) + 1H₂S(g) → 1Ag₂S(s) + 1H₂(g)
The chemical reaction taking place between silver and hydrogen sulfide is represented as follows:
2Ag(s) + 1H₂S(g) → 1Ag₂S(s) + 1H₂(g)
When silver metal reacts with hydrogen disulfide gas, it yields silver sulfide and hydrogen gas is liberated along with it.
This reaction is termed as single displacement or replacement reaction.
The coefficients in an order are 2,1,1 and 1.
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What is the value for the reaction quotient, Q, for the cell? Express your answer numerically. What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles). Calculate the standard cell potential for Mg(s) + Fe^2+(aq) rightarrow Mg^2+ (aq) + Fe(s) Express your answer to three significant figures and include the appropriate units.
The reaction quotient of the reaction of the is obtained as 7.2 * 10^-2 while the cell potential is the cell is 1.93 V.
What is the reaction quotient?We know that the reaction quotient has to do with the constant that shows the extent to which the reactants are converted into products under non equilibrium conditions. This implies under the conditions that are not covered by the equilibrium constant of the reaction.
Then we know that in the case of the reaction that we have;
Q = [tex][Mg^{2+} ][/tex]/[tex][Fe^{2+}][/tex]
Given that;
Iron II = 2.90 M
Magnesium ion = 0.210 M
Then;
Q = 0.210 M/2.90 M
Q = 7.2 * 10^-2
Now we obtain the Ecell from;
Ecathode - Eanode
We then have;
-0.44 V - (-2.37 V)
= 1.93V
The calculations show that the cell reaction quotient for the ions can be given as 7.2 * 10^-2 and the cell potential is 1.93 V.
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Calculate the number of moles in 15.8 grams of aluminum hydroxide 1232 mol 0.203 mol 15.8 mol 0.343 mol 727 mol
The number of moles in 15.8 grams of aluminum hydroxide is 0.203 mol. The International System of Units uses the mole (symbol: mol) as the unit of material quantity.
The amount of a substance determines how many elementary entities of that substance are present in an object or sample. A moles contains exactly 6.022140761023 elementary entities. Depending on the substance, an elementary entity may be an atom, a molecule, an ion, an ion pair, or a subatomic particle like an electron. For instance, despite having different volumes and weights, ten moles of water (a chemical compound) and ten moles of mercury (a chemical element) both contain exactly the same amount of material and one atom per mole of water. The amount of elementary particles in one mole is known as the Avogadro number, which is roughly equivalent to the number of nucleons (protons or neutrons) in one gram of ordinary matter. Historically, a mole was thought to be the amount of elementary particles equal to 12 grams of carbon-12, the most common isotope of carbon. For the quantity of reactants and products in chemical processes, the mole is a standard unit of measurement. For instance, the chemical equation 2H2 + O2 = 2H2O can be interpreted as meaning that for every 2 mol of dihydrogen (H2) and 1 mol of dioxygen (O2) that react, 2 mol of water (H2O) is produced.
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how many grams of sodium lactate are needed to prepare 11.5 liters of ringer's lactate?
To create 11.5 litres of Ringer's lactate, 4.19 gram of sodium lactate is required per the question.
What use does sodium serve in chemistry?In the some nuclear reactor, sodium is employed as a heat exchanger. It is also utilized as a reactant in the chemical sector. In contrast, sodium salts are more useful than sodium itself. Sodium chloride is the most prevalent sodium compound (common salt).
Briefing:Concentration of NaC₃H₅O₃ = 3.25mM
= 3.25*10⁻³M
Volume = 11.5 litre
Molar mass of NaC₃H₅O₃ = 112g/mol
No. of moles of NaC₃H₅O₃
= Concentration of NaC₃H₅O₃ * volume
= 3.25*10⁻³ * 11.5
= 37.38*10⁻³
=3.738*10⁻²
0.037 mol
Therefore,
Mass of NaC₃H₅O₃
= No. of moles of NaC₃H₅O₃ * Molar mass of NaC₃H₅O₃
= 0.037*112
= 4.19 grams
Hence, the required mass of NaC₃H₅O₃ is 4.19 g
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The complete question is-
An aqueous solution known as Ringer's lactate is administered intravenously to trauma victims suffering from blood loss or severe burns. The solution contains the chloride salts of sodium, potassium, and calcium and is also 3.25 mM in sodium lactate (NaC₃H₅O₃).
How many grams of sodium lactate are needed to prepare 11.5 liters of Ringer's lactate?
how do compounds separate on tlc based on polarity based on molecular weight based on capillary action based on solvent effects
TLC- by differential affinities between the two phases. polarity- by changing the speeds of the analytes. molecular weight- by filtration through a gel. solvent effects- by thin layer chromatographya
Give an example and describe a compound.A compound is created when different atoms are connected or chemically joined to form molecules. One example of a compound is water.
How do you recognize substances and elements?The number of protons present in a particular atom, which is an element's smallest building block, is how an element is defined. A compound, on the other hand, is made up of different atoms, and the smallest component of a compound is a molecule.
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why is it important not to dilute the initial sample before it has been loaded
Chromatography column in order to minimize the matrix effect and prevent detector saturation.
Why is using a little amount of solvent critical when loading a sample into a column of chromatography?It is imperative that you just use a few drops of solvent to load the sample in this situation if you choose to load the column wet. If you utilize too much solvent, the loading solvent will obstruct the elution and, as a result, the mixture's separation.
What impact does dilution have?Dilution has the following effects: I As a solution is diluted, its conductivity rises. When diluted, the specific conductivity drops (as the number of ions decreases w.r.t. to volume). With dilution, the equivalent and molar conductivities rise.
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The main lipid components in cellular membranes are: waxes. oils: glycerophospholipids fats: fatty acids: Question 12 1 pts Which of the following lipids will give a single molecule of fatty acid when hydrolyzed? elycerophospholipid wax steroid petroleum
The main lipid components in cellular membranes are glycerophospholipids fats
The major structural lipid in cellular membrane
are. Glycerophospholipids.
phosphatidylcholine (Pt cl cho)
phosphatidic acid (PA) etc.
correct option is third . Glycerophospholipids.
Fatty acid diglycerides with a phosphatidyl ester linked to the terminal carbon are known as glycerophospholipids (GPLs) (see Fig. 1). Ethanolamine, choline, serine, or inositol make up the majority of the terminal ester groups (X). Highly amphiphilic GPLs are typically found in cellular or vesicle membranes. The GPL mixes, which mostly contain phosphotidyl choline, are frequently referred to as lecithin in commercial contexts. Lecithins are surface active substances that are utilised in food as emulsifiers to change viscosity and crystallisation qualities. In addition to these commercial applications, it is used as an emulsifying agent in pesticides, cosmetics, paints, plastics, leather, and textiles.
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how many molecules of co 2 can be formed when three molecules of c 4h {10} are mixed with thirteen molecules of o 2 and the combustion reaction leads to the formation of co 2 and h 2o?
2C4H10 + 13O2 → 8CO2 + 10 H20
6.022 ×[tex]10^{24}[/tex] molecules of H2O
Moles of C4H10 = 3 moles of O2 = 13
O2 is limiting reagent
Moles of H2O = 10/13 × moles of O2
= 10/13 × 13 = 10 MOL H2O = 6.022 ×[tex]10^{24}[/tex] molecules of H2O
The tiniest component of an object that possesses all of its physical and chemical characteristics. The number of atoms that make up a molecule might vary. If they do, the additional atoms may be of the same type (for example, an oxygen molecule contains two oxygen atoms) or distinct types (a water molecule has two hydrogen atoms and one oxygen atom). Many thousands of atoms can make up biological compounds like proteins and DNA.
Molecular oxygen can be found in nature. To create dioxygen, often known as O2, two oxygen atoms form a covalent double bond. As a molecule, oxygen is typically present. Dioxygen is its name
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What is the formula for copper (II) nitrite? CuzNz Cu(NOz)2 Cuz(NO3h2 Cuz(NO2)2
CuN2O4 | Copper Nitrite | PubChem CuNO2 | Copper Nitrite | ChemSpider Please contact your local healthcare facility or the World Health Organization for medical information on Covid-19.
Copper (II) Nitrate's chemical name is Cu
2. Similar to that, this anhydrous salt's structure is made up of 2 anions, NO3-, and 1 cation, Cu2+. The substance manifests up to 5 distinct hydrate forms. Cu is trihydrated as Cu(NO3)2, and it is pentahydrated as Cu. 2.
The reaction you were provided explains the thermal breakdown of copper(II) nitrate, Cu
2 . Decomposition reactions often have one reactant and several products, which makes them easy to spot.
An oxidation process occurs when copper reacts with oxygen to generate copper oxide.
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a solution is 0.10 m ba(no3)2 and 0.10 m sr(no3)2 . if solid na2cro4 , is added to the solution, what is [ba2 ] when srcro4 begins to precipitate?given that : [ksp(bacro4)
The concentration of [Ba²⁺] when SrCrO₄ begins to precipitate in the reaction is 3.4×10⁻⁷
It is given that the solution of Ba(NO₃)₂ and Sr(NO₃)₂ has a molar concentration of 0.10M, then the concentration of SrCrO₄ can be written as follows
Ksp(SrCrO4)= [Sr²⁺][CrO₄²⁻]
[CrO₄²⁻] = 3.5×10⁻⁵/0.1
=3.5×10⁻⁴
From this we can say that the concentration of CrO₄²⁻ is 3.5x10⁻⁴, then the concentration of Ba²⁺ in BaCrO₄ can be computed as follows:
Ksp(BaCrO₄) = [Sr²⁺][CrO₄²⁻]
This is because at equlibrium the concentration of Ba²⁺ will be same as that of Sr²⁺. Then,
[CrO₄²⁻]Total =[CrO₄²⁻] from SrCrO₄
[Ba²⁺] = 1.2×10⁻¹⁰/3.5×10⁻⁴
[Ba²⁺] = 3.4×10⁻⁷
Therefore, the concentration of Ba²⁺ in Ba(NO₃)₂ is 3.4×10⁻⁷ when SrCrO₄ begins to precipitate.
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determine the identity of the daughter nuclide from the positron emission of c-11 ? question 5 options: a) c-12 b) n-11 c) b-11 d) b-10 e) n-12
The identity of the daughter nuclide from the positron emission of c-11/6 is option c)11/5-b
What is beta decay?
In the radioactive decay process known as beta decay, a parent nucleus emits an electron (or positron). An electron and a neutron can separate from certain neutrons in the parent nucleus. The parent nucleus will emit an electron, followed by the production of a further proton, increasing the atomic number. In terms of nuclear physics, some elements in group A can form daughter nuclei of elements that are next to them in the periodic table. Let's call it B in this situation.:
NZA→ 0−1e+NZ+1BZNA→ −10e+Z+1NB
where:Z is the atomic number,N is the mass number
If the emission is a positron, then the process is:
NZA→ 0+1e+NZ−1BZNA→ +10e+Z−1NB
So from the following equation we learn
11(top) 6(bottom) C ---> 0(top) 1(bottom) e + 11(top) 5(bottom) B
Therefore the identity of the daughter nuclide from the positron emission of c-11/6 is option c)11/5-b
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