Xenon a noble gas shows the greatest deviation from the ideal gas law at high pressures.
Real gases behave very differently from ideal gases at high pressures or low temperatures. It's useful to be aware that the ideal gas law considers the size of gas molecules to be minimal or nonexistent.
Due to its size and the fact that it is the largest of the group, Xe is predicted to deviate from the ideal gas the most under conditions of high pressure or low temperature.
Van der Waal forces come into play as gaseous atoms or molecules grow closer to one another under high pressure and low temperature. As a result, atoms or molecules begin to attract one another. As a result, gas behaves the furthest from its ideal state. While in an ideal world there would be no intermolecular forces of attraction, we can assume that gases do not attract one another.
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What is Cadenas tróficas?
Hello..!
¿What is Cadenas tróficas?
Food chains are chains of living beings that inhabit a certain territory and that comply with the flow of
energy through your diet.
Which class of acid will have an increased concentration in someone who is suffocating?.
Acid will have an increased concentration in someone who is suffocating then suffocating does not affect any body acid
Acid in the body are gastric acid or stomach acid is a digestive fluid formed within the stomach lining and with pH between 1 and 3 gastric acid play a key role in digestion of protein by activating digestive enzyme
And the asphyxiation also called asphyxia or called suffocation is when the body doesn't get enough oxygen and without immediate intervention it can get lead to loss of consciousness or brain injury or death so any acid in the body doesn't affect if someone is suffocating
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Identify whether the atom or ion in each equation shows oxidation or reduction. cu2 e− → cu cu2 is fe → fe3 3e−fe is f e− → f−f− is 2l− → l2 2e−l− is 2h 2e− → h2h is
In the mentioned reaction:
Cu²⁺ + e⁻ → Cu ; Cu²⁺ is reduced
Fe → Fe³⁺ + 3e⁻ ; Fe is oxidized
2l⁻ → l₂ + 2e⁻ ; l⁻ is oxidized
2H⁺ + 2e⁻ → H₂ ; H⁺ is reduced
Explain oxidation and reduction.Oxidation is the process of adding oxygen or electronegative elements or removing hydrogen or electropositive elements. According to the electronic concept, oxidation is defined as the process of losing one or more electrons.
Reduction is the process of adding hydrogen or electropositive elements or removing oxygen or electronegative elements. According to the electron concept, reduction is defined as the process of gaining one or more electrons.
For the given problem,
The oxidation number of Cu²⁺decreased from +2 to 0. thus, it is reduced.
The oxidation number of Fe increased from 0 to +3, it is therefore oxidized.
The oxidation number of l⁻ increased from -1 to 0. It is oxidized.
The oxidation number of H⁺ decreased from +1 to 0. It has been reduced.
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Based on the parameters set forth in your lab procedure, what is the ph you should observe when you added the hcl to water?.
Acid has a pH below 7 while water has a pH of 7. A strong acid with a pH of roughly 3, HCl is. Water gets more acidic and loses pH in the range of 4-5 when HCl is added to it.
What is pH?A substance's pH is a gauge of how basic or acidic it is. It is a measurement of the amount of H+ present in the solution. It is equivalent to the negative logarithm of the concentration of H+ ions mathematically.
A solution is acidic if its pH value is less than 7, and basic if it is greater than 7. Acids have a lower pH because they contain more H+ ions. Strong acid hydrochloric acid has a pH between 2 and 3.
Water has no charge. Water becomes acidic in pH if any acid is introduced. Therefore, if HCl is given to water, the pH of the water will change to 3-5 depending on the acid content.
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assuming 57.0 mg of pure aluminum react completely with hydrochloric acid, how many milliliters of hydrogen gas are produced at stp?
30 ml of hydrogen gas are produced.
What is ideal gas law?The ideal gas law is also known as the general gas equation, is the equation of state for a hypothetical ideal gas. It may have some limitations, but is a good approximation of the behavior of many gases under many conditions. It is expressed as PV = nRT
The reaction is expressed as:
2Al + 6HCl ⇒ 2AlCl₃ + 3H₂
The ratio of Al and H₂ is 2:3
Moles of aluminium = 0.057 /26.98
= 0.0021 moles
The mole ratio indicates that,
The number of moles of H₂ = 0.0021 × 2/3
= 0.0014 moles
Using PV = nRT
where,
T = 273 K
P = 1 atm
R = 0.0821 Kj /mol K
n = 0.0014 moles
Substitute the values in equation which gives,
V = nRT/P
V = 0.0014×0.0821×273/1
V = 0.03 L or 30 ml
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What does the law of definite proportions state?
Atoms will never break bonds in a chemical reaction.
Atoms combine in whole number ratios.
Atoms will always form compounds.
Atoms cannot be created or destroyed.
The law of definite proportions state atoms combine in whole number ratios. Therefore, option B is correct.
What is the law of definite proportions ?According to the rule of definite proportions, every chemical compound has the same elements in the exact same mass quantities.
According to the law of definite proportions, sometimes referred to as the law of constant proportions, each of the constituent components of a chemical compound must always be present in a certain ratio in terms of their mass.
According to the law of definite proportion, the mass ratio of the components in compounds is constant. As an illustration, water from various bodies of water will still have 11% hydrogen and 89% oxygen.
Thus, option B is correct.
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which option is a dilute solution? responses a solution with 90% solute and 10% solvent a solution with 90% solute and 10% solvent a solution with 0% solute and 100% solvent a solution with 0% solute and 100% solvent, , a solution with 10% solute and 90% solvent a solution with 10% solute and 90% solvent a solution with 50% solute and 50% solvent
Answer:
The correct option is the third statement (a solution with 10% solute and 90% solvent).
Explanation:
Reason for correct answer:
A solution containing 10% solute and 90% solvent is a dilute solution. Because a dilute solution contains less amount of dissolved solute than a solvent. Therefore, the third statement is correct.Reason for incorrect answers:
The first statement is incorrect because a solution containing 90% solute and 10% solvent is a concentrated solution. Because a concentrated solution contains a large amount of solute than a solvent.The second statement is incorrect because a solution containing 0% solute and 100% solvent is not a solution, it is a solvent. Because it doesn't contain solute. The fourth statement is incorrect because a solution containing 50% solute and 50% solvent is called either solute or solvent.Know more about the solution:
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Question:
What is volume of the mineral sample?
A: 30 mL
B: 150 mL
C: 180 mL
D: 60 mL
Volume of the mineral sample is 30ml.
What is Archimedes' principle?The buoyant force on a fluid is equal to the weight of the displaced fluid, according to Archimedes' principle. Equation buoyant force = density of fluid x volume of displaced fluid x acceleration due to gravity is used to calculate the buoyant force.
The formula Fb=Vg can be used to calculate the buoyant force. Fb = V g, where Fb is the buoyant force in Newtons, is the fluid density in kilograms per cubic meter, V is the volume of the displaced fluid in cubic meters, and g is the acceleration brought on by gravity.
Volume of mineral sample = 30ml
Volume of mineral sample = [tex]V_{final}[/tex] - [tex]V_{intial}[/tex]
Volume of mineral sample = 180-150
Volume of mineral sample = 30ml.
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the molar absorptivity of a compound at 500 nm wavelength is 252 m-1cm-1. suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 ml solution. what would be the absorbance in a 4 .00 mm pathlength cell? type answer:
The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 4.00 mm pathlength cell, is 0.0282.
We'll start by figuring out the compound's molarity, which is determined by dividing the moles of solute by the liters of solution.
M = 0.00140/ 0.5000L = 0.00280M
Then, use the conversion formula 1 cm = 10 mm to convert 4.00 mm to cm.
4.00mm * 1cm/ 10mm = 0.400cm
Finally, we will use the Beer-Lambert equation to get the compound's absorbance.
A = E * b* C
where,
A: absorbance
ε: molar absorptivity
b: length of the light path
C: molar concentration
A = E * b* C
A = 25.2/ M.cm * 0.400cm * 0.00280M
A = 0.0282
The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 3 .00 mm pathlength cell, is 0.0282.
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The statement from which investigation is an example of repetition?
A. Investigation 1
B. Investigation 2
C. Investigation 3
D. Investigation 4
Option D. Investigation 4, represents the statement from which investigation is an example of repetition.
Each is a repeated run of your combination of things and stages. Repetition does the replica runs consecutively even as replication does more than one run but throughout identical but special experimental runs. The investigation is a radical search for data, particularly the ones which are hidden or need to be sorted out in a complicated state of affairs. The intention of the research is commonly to decide how or why something befell.
Experimental investigations contain a procedure in which a "honest test" is designed and variables are actively manipulated, managed, and measured which allows you to collect proof to aid or refute a causal courting.
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Disclaimer:- your question is incomplete, please see below for the complete question.
what is the absolute value of the percent deviation of the ideal-gas prediction from the predicition of the truncated virial equation?
The formula for the ideal-gas percent deviation is: PV = nRT, where R = 0.08206 L.atm/ k.mol = 8.3145 J/K.mol
General gas equation:
[tex]\frac{P_{i} V_{i} }{n_{i} T_{i} }[/tex] = [tex]\frac{P_{f} V_{f} }{n_{f} T_{f} }[/tex]
Density of gas:
р = [tex]\frac{MP}{RT}[/tex]
Derive Ideal gas equation?Any collection of relationships between a single quantity (such as V) and a number of other variables (such as P, T, and n) can be combined into a single statement that encompasses all of the relationships simultaneously. Prior to now, the following three unique expressions were derived:
Boyle’s law
V ∝ 1/P at constant n and T
Charles’s law
V ∝ T at constant n and P
Avogadro’s law
shows V ∝ n at constant T and P
by Combining these three expressions,
V ∝ nT/P
The proportionality constant, also referred to as the gas constant and represented by the letter R, can be written as follows by combining these three expressions:
V = Cons.(nT/P).
Equation becomes V = RnT/P = nRT/P when R is included.
To get rid of the fractions, multiply both sides of the equation by P to get PV = nRT.
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the process of crenation occurs when the concentration of solute outside the cell is than inside the cell and the solution is said to be .
The process of crenation occurs when the concentration of solute outside the cell is than inside the cell and the solution is said to be hypertonic.
What is crenation?
In botany and zoology, the term "crenation" refers to the round-toothed or scalloped shape of an object, particularly a leaf or shell. Modern Latin crenatus, meaning "scalloped or notched," is derived from common Latin crena, meaning "notch."
The term can refer to a variety of items, including cells. One process of crenation is the contraction of a cell upon exposure to a hypertonic solution due to the loss of water through osmosis.Cucumber pickling and salt-curing of beef are practical applications of crenation.
In a hypertonic environment, the cell's solute concentration is lower than that of the extracellular fluid around it, and water diffuses out of the cell by osmosis, resulting in a reduction in the volume of the cytoplasm. The result is cell membrane irregular notchings and cell membrane shrinkage.Hence, the process of crenation occurs when the concentration of solute outside the cell is than inside the cell and the solution is said to be hypertonic.
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what is the concentration (m) of ch3oh in a solution prepared by dissolving 23.4 g of ch3oh in sufficient water to give exactly 230 ml of solution?
Ch3ho has a concentration (m) of 1.589 mol/dm3 in a solution.
data supplied:-Given our parameters, 230 ml per liter of solution and a mole of solutes equal?
that: mass/molar mass = moles of solutes
mass = 11.7g.
thus the formula for CH3OH's molar mass is C(12)+H(1*3) +O(16)+1 =32g.
11.7g/32g Equals 0.365 moles of solutes.
Great, now that we have the moles, we can now enjoy the molarity (concentration)
Molarity is equal to 0.365mol/230*10-3, which is 0.365mol/0.230L, or 1.589mol/dm3.
What is the molarity unit?The formula for calculating molarity is molarity = number of moles of solute. litres of the solution. Since the volume of the solution will be measured in litres and the quantity of moles of solute is measured in mol. So, mol L – 1 is the unit of molarity.
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Calcium and Hydroxide combine to produce:
Electron Dot Formula of compound
Compound formula
Compound name
Calcium hydroxide is created when calcium and oxygen mix.
Calcium Hydroxide in the Electron Dot formula:
Ca is a compound (OH)
Name of second compound is Calcium Hydroxide.
The Lewis structure is what?A Lewis structure is a very condensed representation of the electrons in the valence shell of a molecule. It is used to show the electron arrangements around specific atoms in compounds. The electrons are shown as "dots" or as a line when two atoms are bound together. To reach the "ideal" electron configuration, the octet rule and formal charges must be met.
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Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
The ionization energy decreases because the ratio of the protons to electrons increases.
The ionization energy increases because the ratio of the protons to electrons increases.
The ionization energy decreases because the ratio of the protons to electrons decreases.
The ionization energy increases because the ratio of the protons to electrons decreases.
Option B. The ionization energy increases because the ratio of protons to electrons increases. explains the change in ionization energy that occurs between removing the first and second electrons from an atom.
The ionization energy is the degree of the functionality of an element to go into chemical reactions requiring ion formation or donation of electrons. it is also usually associated with the nature of the chemical bonding within the compounds shaped by the factors. See additionally binding strength; electron affinity.
Ionization energy is superb for neutral atoms, meaning that ionization is an endothermic system. more or less speaking, the nearer the outermost electrons are to the nucleus of the atom, the higher the atom's ionization electricity. In physics, ionization power is typically expressed in electronvolts (eV) or joules (J).
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At a constant temperature, which of the gases will have the highest average kinetic energy?.
The average kinetic energy depends on the mass and speed of the particles. At constant temperature, every gas molecules have the same average kinetic energy.
What is kinetic energy?Kinetic energy is a form of energy generated by virtue of motion of an object. When the object is at rest the energy is stored in the form of potential energy whereas, when they start to move they gain a kinetic energy.
Average kinetic energy of a particle, depends on temperature by the equation :
K = 3/2 KT
Therefore it is independent of mass and speed of the particles. However the speed of ions at constant temperature will be different.
Hence, at constant temperature, the average kinetic energy of all the gases will be the same. Thus, option E is correct.
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Your question is incomplete. But your complete question probably was:
At a constant temperature, which of the gases will have the highest average
kinetic energy?
A) H2
B) N2
C) O2
D) F2
E) All the gases will have the same average
kinetic energy.
Would a precipitate form if a solution of calcium acetate were mixed with a solution of sodium phosphate? if so, what precipitate would form?.
Precipitate Ca₃(PO₄)₂ would be created by mixing sodium phosphate with calcium acetate.
What is precipitation reaction?When dissolved compounds react, they might produce one or more solid products in a process known as precipitation. Double displacement, double replacement, or metathesis reactions are some names for several of these processes, which frequently include the exchange of ions between ionic compounds in aqueous solutions.
Two soluble salts react to form precipitates, an insoluble salt.
The following equation illustrates the reaction between calcium acetate and sodium phosphate:
3Ca(C₂H₃O₂)₂ + 2Na₃PO₄ → Ca₃(PO₄)₂ +6NaC₂H₃O₂
The reaction produces Ca3(PO4)2, which is an insoluble salt and a precipitate.
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The relationship between absorbance of light by a solution and its concentration should be choose. So that when concentration increases, absorbance choose. .
Explanation:
Relation between concentration and absorbance: Absorbance is directly proportional to the concentration of the substance. The higher the concentration, the higher its absorbance.
The relationship between absorbance of light by a solution and its concentration should be Linear
b) Linear
so that when concentration increases, absorbance Increases
c) Increases
The Beer-Lambert Law, also known as the Beer-Lambert-Bouguer Law, describes the relationship between the absorbance of light by a solution and the concentration of the absorbing solute in that solution. This law is fundamental in spectroscopy and is used to quantify the concentration of a solute in a solution.
The Beer-Lambert Law is expressed as:
A = ε * c * l
Where:
A is the absorbance of the solution (unitless),
ε is the molar absorptivity or molar extinction coefficient (a constant specific to the solute and the wavelength of light),
c is the concentration of the solute in the solution (usually in mol/L or M),
l is the path length of the light through the solution (usually in centimeters).
The relationship between absorbance of light by a solution and its concentration should be: Linear
so that when concentration increases, absorbance: Increases
In a linear relationship, the absorbance of light by a solution increases in direct proportion to the concentration of the solute in the solution. As the concentration of the solute increases, more light is absorbed by the solution, leading to a higher absorbance value.
Therefore, when the concentration of a solution increases, the absorbance of light by that solution also increases in a linear fashion.
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The complete question is:
The relationship between absorbance of light by a solution and its concentration should be ___
Choose:
a) Exponential
b) Linear
c) Inverse
so that when concentration increases, absorbance ___
Choose:
a) Does Not Change
b) Decreases
c) Increases
a 1.00 g sample of potassium bicarbonate is decomposed by heating. part a if the resulting potassium carbonate weighs 0.710 g and the calculated yield is 0.690 g , what is the percent yield? general exercises
The percent yield will be 103 %
Mass of potassium bicarbonate = 1.00 g
Molar mass of potassium bicarbonate = 100.115 g/mol
Mass of potassium carbonate = 0.710 g
Molar mass of potassium bicarbonate = 138.205 g/mol
Calculated yield = 0.690 g
Percent yield = ?
Calculated yield is given, if not you can find out by following steps:
Write the balanced chemical equation
2KHCO₃ → K₂CO₃ + H₂O + CO₂
Hence 2 moles of KHCO₃ decompose to produce 1 mole of K₂CO₃
This means that 2 × 100.115 g of KHCO₃ will produce 138.205 g of K₂CO₃
Calculate for 1 g = 138.205 / 200.23
Calculate for 1 g = 0.690 g
This means that 1 g of KHCO₃ will produce 0.690 g of K₂CO₃
Now calculate % yield
% yield = (actual yield / calculated yield)
% yield = (0.710 / 0.690) 100
% yield = 1.029 * 100
% yield = 103 %
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Benzene (c6h6) burns in air to produce carbon dioxide and liquid water. Calculate the change in heat (in kilojoules) per gram of the compound reacted with oxygen. The standard enthalpy of formation of benzene is 49. 04 kj/mol.
For gram of the chemical that interacted with oxygen, -41.83 KJ of heat were released.
Describe heat.Heat is the exchange in "thermal" energy caused by a temperature difference. Imagine a system that is isolated and has two subsystems that really are initially running at different temperatures. Energy is moved from the lower temperature subsystem 1 to the high thermal subsystem 2.
What really is heat in a unit?Because heat is a type of energy, the SI unit for heat also is joules (J), which is defined as the quantity of energy required to elevate the temperature of the a mass m by one degree. This is significant because heat is a kind of energy. To calculate heat, divide the temperature change of a water sample by its mass.
Briefing:2C6H6 + 15O2 -> 12CO2 + 6H2O
2x49.04 2x10 12x-393.5 6x-285.8
= [12(-393.5)+6(-285.8)] - [2(49.04)+(2x10)]
= -6936.8 -98
= -6534.8 KJ/mole
Per gram of C6H6
= (-6534.8 KJ / 2 mole of C6H6)(1 mole of C6H6 / 78.108g)
= -41.83 KJ / mole
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Explain why a solution that is prepared by dissolving 0. 1 mol each of kh2po4 and k3po4 in 1 l of water is not a buffer solution.
The term "buffer" refers to a solution's capacity to withstand pH fluctuations, even when additional bases or acids are introduced. Buffer has the ability to neutralize any acids or bases supplied to the system in order to stabilize it.
Why does it act as a buffer?Equivalent molar ratios of KH2PO4 and K2HPO4 when combined with water result in the creation of buffer solution. A particular kind of dibasic salt is dipotassium phosphate. K2HPO4 is the solution that is created when hydrogen ions are added to K3PO4, and it functions as a conjugate acid. H2PO4 acts as a weak acid and HPO2 acts as a conjugate base of a in this system of buffers diluted acid . As a result, this KH2PO4 and K2HPO4 solution in water serves as a buffer.
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Silicon carbide (sic) is an important ceramic material that is made by allowing sand (silicon dioxide, sio2) to react with powdered carbon at high temperature. When 10 kg of sand (sio2) is used in the reaction, what is the amount (in grams) of co being produced?.
Actual mass of CO recovered is 99.4g
Balance equation is : SiO2 + 3C SiC + 2CO
Molar mass of CO is 28.01 g/mol
Moles of CO = given mass/molecular mass = 100/28.1 = 3.55mol
mass = moles of sio2 x molecular mass
Actual mass = 3.55mol of CO x 28 = 99.4g
The amount of matter that makes up an element's atom, or atomic mass. It is expressed as a multiple of 1.992646547 1023 gram, which is equal to one-twelfth of the mass of the carbon-12 atom, which has an atomic mass of 12 units. 1 atomic mass unit (amu) is equal to 1.660539040 1024 grams on this scale. An indicator of an element's atomic mass is the atomic mass unit (AMU or amu). The atomic mass unit (AMU), also called the dalton (Da) or the unified atomic mass unit (u), expresses both atomic and molecular masses. Only 1/1,836 the mass of a proton, 9.1093837015 1031 kg, is the rest mass of an electron. Therefore, compared to a proton or neutron, an electron is thought to be almost massless, and the electron mass
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will pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
Given that,
The volume of NaCl = 125 ml
Concentration of NaCl = 0.0339 m
The volume of Pb(NO3)2 = 275 ml
Concentration of Pb(NO3)2 = 0.134 m
K(eq) = 1.17 × 10(-5) --------(1)
Total volume = 275 + 125 = 400 ml
Pb(NO3)2 ------- Pb(+2) + 2 NO3(-)
at t = 0 0.134 0 0
at t = t 0 0.134 0.134
NaCl -------- Na(+) + Cl(+)
at t = 0 0. 0339 0 0
at t = t 0 0.0339 0.0339
PbCl2 ---------- Pb(+2) + 2Cl(-)
Q(sp) = [Pb+2] [ Cl-]^2
By substituting the values of conc. of all the ions, we get Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
= (275 × 0.134/ 400) (125 × 0.0339/400)^2
= 9.8 × 10(-6)
As we noticed that, Ksp > Qsp
Therefore, PbCl2 will not precipitate.
Thus, we concluded that the Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
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which of the following has the greatest mass? which of the following has the greatest mass? 1 mole of na 1 mole of pb 1 mole of be 1 mole of h2 all have the same mass. submit
One mole of Pb has the greatest mass and the mass is 207g
We know, that mass = given mole × Molecular weight
According to the given question, we need to find the masses of 1 mole of Na(Sodium), Pb(Lead), Be(Beryllium) and H₂
So,
Mass of Na = 1 × 23 = 23g
Mass of Pb = 1 × 207 = 207g
Mass of Be = 1 × 9 = 9g
Mass of H₂ = 1 × 2 = 2g
Therefore, one mole of Pb (lead) has the greatest mass among the given four elements that are Na, Be and H₂.
The Molar mass of a substance is the mass in grams of one mole of the compound. Pb( lead) is a soft, malleable, ductile and dense metallic element.
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The magnesium oxide reacts with the hydrochloric acid and forms magnesium chloride (MgCl₂)
solution and water.
magnesium oxide + hydrochloric acid → magnesium chloride solution + water
Write a balanced symbol equation for this reaction, including state symbols.
Answer:
MgO(s) + 2HCL(aq) --- > MgCl2(s) + H2O(l)
Five characteristics of a molecule that can be determined from a lewis structure.
The Lewis structure can be used to identify the following traits. Considering one,
H₃N + BF₃ ———> [H₃N—->BF₃]
what is a Lewis structure?The valence shell electrons of a molecule are depicted in a highly condensed manner in a Lewis structure. It serves as a visual representation of the electron arrangements surrounding specific atoms in molecules. In bonds involving two atoms, electrons are shown as lines or as "dots" respectively.
A molecule's Lewis structure reveals how many valence electrons are attached to each atom. The Lewis structure of a molecule can be used to infer a lot of significant information. These details include, among others;
Each atom in the molecule has a certain number of valence electrons attached to its valence shell.
The molecule's type of bonding
Whether the atoms in the molecule follow the octet rule or not
Potential resonance configurations that the molecule might have
whether or not atoms in the molecule have lone pairs of electrons.
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2. what would happen to the rf if you left the tlc plate in the chamber for too long after the solvent reached the top? how does this affect the accuracy and precision of the rf value?
The solvent will flow to the top of the TLC plate and the chemicals identified on the silica plate will travel farther than expected if the TLC plate is left in the developing chamber for an extended period of time.
What occurs if TLC is left on for too long?That might lead to inaccurate Rf readings and the close-together spots colliding. With tweezers, remove the plate, and as soon as you can, pencil in the solvent front line.
If you wait too long, it will fade and you won't have all the data you need to figure out the Rf values.
There is no way to tell where the line should be drawn because the solvent front reached the top.
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a hydrocarbon undergoes combustion, producing 6.00 g co2 and 1.84 g h2o. what is the empirical formula of this hydrocarbon?
For instance, the empirical formula of a hydrocarbon is CH 2, and its M r is 42. Consequently, C 3H 6 is the hydrocarbon's chemical formula.
What is the empirical formula for the CO2 and H2O hydrocarbons?Finding the mass of C in CO2 and H in H2O is the initial stage in this process. This is accomplished by multiplying by the mass of the compound formed after dividing the atomic mass by the molecular mass. The empirical formula for this hydrocarbon is CH3, as we have a ratio of 1 carbon atom to 3 hydrogen atoms.
What is the hydrocarbon chemical equation?A saturated hydrocarbon with one ring has the generic formula CnH2n. For the majority of compounds, details other than the chemical formula are required to clarify their structure. However, a chemical formula's C:H ratio can reveal information about the chemical structure.
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explain the sequence of events that resulted in the end of reconstruction
The sequence of events that resulted in the end of reconstruction include:
Republicans lost powerSouthern Democrats agreed to Hayes becoming president if he would end ReconstructionHayes removed federal troops and Reconstruction ended.What is the reconstruction?The Reconstruction era was a period in American history following the American Civil War (1861–1865) and lasting until approximately the Compromise of 1877—when the last federal troops were withdrawn from the South—where attempts were made to deal with the problems of readmitting the eleven states that had seceded from the Union and fought against it in the Civil War, and to redress the political, social, and economic legacies of slavery.
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The percent by mass of calcium in the compound calcium sulfate (caso4) is approximately.
Calcium has approximately 20.439% of mass in calcium sulphate compound.
Calcium sulphate is the inorganic compound with the formula CaSO4 and related hydrates. in the form of anhydrite, it is used as a dessicant. One particular hydrate is better known as plaster of paris and another occurs naturallly as the mineral gypsum. It has many uses in the industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water.
The compounds exist in three level of hydration corresponding to different crystallographic structure and to minerals.
a. CaSO4 is an anhydrous state. The structure is related to that of zirconium orthosilicate.
b. CaSO4.H2O Dihydrate
c. CaSO4.1/2H2O Hemihydrate.
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