Answer:
The number of protons, massive, positively charged nuclear particles defines the identity of the nucleus.
Woah. Vocabulary here.
An isotope is any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weight. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopes, and every element has known isotopic forms. Isotopes of a single element possess almost identical properties.
Helium is usually defined as an inert, gaseous element present in the sun's atmosphere and in natural gas, and also occurring as a radioactive decomposition product, used as a substitute for flammable gases in dirigible balloons. Symbol: He; atomic weight: 4.0026; atomic number: 2; density: 0.1785 g/l at 0 °C and 760 mm pressure.
Explanation:
The number of protons, massive, positively charged nuclear particles, gives Z, the atomic number, which defines the identity of the nucleus.
Z=1, "hydrogen",Z=2, "helium",Z=3, "lithium",...........Z=21, "scandium".
The nucleus may contain various numbers of neutrons, massive, neutrally charged nuclear particles, which gives to the existence of isotopes.
For hydrogen, [tex]Z=1[/tex] by defintion. That is there is a proton in all hydrogen nuclei. Some hydrogen nuclei contain 1 neutron to give the deuterium isotope, [tex]^2H[/tex] ; an even smaller number of hydrogen nuclei contain 2 neutrons, to give the tritium isotope, [tex]^3H[/tex] ; Most atoms have a number of isotopes in different proportions.
To answer your question, the helium atom has [tex]Z=2[/tex] ; i.e. there are 2 nuclear protons, which is what defines the atom as helium. The most common isotope of helium is [tex]^4He.^3He[/tex] and [tex]^5He[/tex] re known with vanishingly small abundances, and half lives.
This video discusses how to determine the number of subatomic particles in C-12 , C-14 , H-1 , H-2 and H-3 .
Thanks.
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.
To know more about hydrocarbon visit:-
https://brainly.com/question/17578846
#SPJ4
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
To know more about ideal gas law visit:
https://brainly.com/question/13821925
#SPJ4
suppose you begin with an unknown volume of 8.61 m h2so4and add enough water to make 5.00*102ml of a 1.75 m h2so4solution. what was the unknown volume of your 8.61 m h2so4solution that you began with? express your answer in ml.
The unknown volume of 8.61 M H2SO4 solution after adding water to make 5.00*102ml of 1.75m H2SO4 was 102 ml, or 1.02 × 102 ml.
1.02x10^2 ml The product of molarity and volume will remain constant as mole solvent is added since molarity is defined as moles per liter. In order to describe this, let's build up an equality: m0*v0 = m1*v1, where m0, v0 are the molarity and volume of the original solution and m1, m1 are those of the final solution.
Calculate by first solving for v0, then substituting the known values: m0*v0 = m1*v1, where v0 = (1.75 M * 500 ml)/8.61 M and V0 = 101.6260163. The result of rounding to three significant figures is 102 ml.
To learn about solution click here:
https://brainly.com/question/14296106
#SPJ4
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.
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.
To know more about oxidation and reduction visit:
https://brainly.com/question/28216195
#SPJ4
A 0. 2500 g sample of a compound known to contain carbon, hydrogen and oxygen undergoes complete combustion to produce 0. 3664 g of co2 and 0. 1500 g of h2o. What is the empirical formula of this compound?.
The empirical formula of this compound CH₂O and the compound is Methanal
What is empirical formula?The molecular formula of a compound is the simplest integer ratio of the atoms present in the compound.
For the mass of C and H, using molar masses:
12.0 x (0.3664/44.0) = 0.096g C
2.02 x (0.15/18) = 0.016g H
As the sample is completely converted into CO₂ and H₂O.
So, 0.25g sample - 0.096g C - 0.016g H = mass of oxygen
Mass of oxygen = 0.138g
Using molar masses:
0.096g / 12.0 g/mol = 0.008 moles C
0.016g / 1.01 g/mol = 0.015 moles H
0.138g / 16.0 g/mol = 0.008 moles O
0.008 is lesser, so use it to normalize to find the ratio.
The ratios are:
0.008 moles C / 0.008 = 1 moles C
0.015 moles H / 0.008 = 1.8 moles H
0.008 moles O / 0.008 = 1 mole O
Moles of H = 1.8 ≈ 2
This makes the empirical formula as: CH₂O (Methanal)
To know more about empirical formula visit:
https://brainly.com/question/11588623
#SPJ4
the wobble hypothesis predicts that codons coding for the same amino acid differ as they are read in the 5' to the 3' direction.
The Wobble Hypothesis describes how different codons can represent the same amino acid. The less precise base pairings that can form between the third base of the codon and the base at the first position on the anticodon allow one tRNA molecule (with one amino acid attached) to recognize and bind to several codons.
Give a brief idea about amino acids.A basic amino group (NH2), an acidic carboxyl group (COOH), and an organic R group (or side chain) that is specific to each amino acid make up an amino acid, an organic molecule.
Alpha-amino carboxylic acid is referred to as an amino acid informally.
An amino and a carboxyl group are both joined to the core carbon (C) atom, known as the -carbon, in every molecule. A hydrogen (H) atom and the R group typically fulfill the remaining two bonds of the -carbon atom.
The building components of proteins are amino acids. The vast majority of chemical processes that take place in cells are catalyzed by proteins. They give cells a lot of their structural components and aid in fusing cells into tissues.
Learn more about proteins here:-
https://brainly.com/question/10058019
#SPJ4
why is a solution not a pure substance?
a, it is made up of one substance
b, the solute and solvent cannot be seperated
c, it is a mixture between a solute of solvent
d, it is made up of two substances that are chemically combined
i just took the test the anwser is c
A solution is not a pure substance as it is a mixture between a solute and a solvent.
Pure substances are substances that are made up of only type of particles and have a fixed structure. In pure substances the matter cannot be separated into other kinds of matter by any physical means.
A homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.
A solution cannot be a pure substance because it is made up of a homogenous mixture of solute and a solvent. Homogenous means the matter cannot be separated out and therefore a solution cannot be a pure substance.
To know more about pure substances
https://brainly.com/question/2117938
#SPJ1
gallium crystallizes in a primitive cubic unit cell. the length of an edge of this cube is 362 pmpm . what is the radius of a gallium atom? express your answer numerically in picometers.
The gallium atom's radius is 181 pm.
What is an atom of gallium's radius?The basic cubic structure of a primitive cubic unit cell has one atom in each of the cube's eight corners. In addition, eight additional cubes share each atom evenly, resulting in one atom per unit cell.
A basic cube's edge length (a) and atomic radius (R) are connected by the formula: a = 2*R.
A = 362 pm for the Ga unit cell.
R = a/2 = 362/2 = 181 pm as a result.
As a result, the gallium atom's radius is 181 pm.
How is the basic cubic unit cell made?Only the corners of the original cubic unit cell contain atoms. Eight adjacent unit cells share each atom at the corner. Both the upper (or lower) layer and the same layer have four unit cells each. Consequently, a specific unit cell only contains 1/8th of an atom.
To know more about atom's radius visit:-
https://brainly.com/question/13607061
#SPJ4
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.
To find more on kinetic energy, refer here:
https://brainly.com/question/26472013
#SPJ1
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.
what is the concentration of nh3 (in mg/l) of household ammonia that contains 3.00 percent by weight of nh3? assume the density of water 5 1,000 kg/m3 .
Therefore the concentration of NH3 is 30000mg/L.
What is density?
A material's density specifies the density of that material in a given region. The mass per unit volume of a material is defined as its density. The density of matter is a measurement of how tightly stuff is packed together. It is a specific physical property of anything. The density principle was established by Archimedes, a Greek scientist. Calculating density is simple if you know the formula and understand the units. The symbol denotes density, which can also be represented by the letter D.
Understanding density is critical since it affects many aspects of life. In physics, density is something that affects which clouds float high in the sky and which sink lower. The motions of gases in the atmosphere are determined by density when one material rises over another. It has an impact on what sinks and what floats in a body of water. So, what exactly does density imply? The definition of density is a measure of how dense matter is. Simply put, how much "things" can fit into a given space. The more "stuff" or substance crammed into a place, the denser it becomes.
Calculate the mass of NH3 in household ammonia as follow
[NH3] = weight of NH3 ( Density of water)
[NH3]= 30Kg/[tex]m^{3}[/tex]
[NH3] IN mg/L
Therefore the concentration of NH3 is 30000mg/L.
Learn more about density from given link
https://brainly.com/question/406690
#SPJ4
do yoou think the orbital period for esus would increase, decrease, or staty the same if its mass were increased? explain your reasoning.
Increased mass would not change the orbital period because Kepler's third law does not take mass into account.
Define Kepler's third law.The cubes of the semi-major axes of the planets' orbits are directly proportional to the squares of the planets' orbital periods. According to Kepler's Third Law, as orbiting planet's radius increases, same the time of its orbit around the Sun.
Thus, we learn that Mercury, the innermost planet, completes its orbit of the Sun in just 88 days. Saturn needs 10,759 days to complete the same task as the earth does in 365 days. Despite the fact that Kepler had no knowledge of gravitation at the time he developed his three laws, Isaac Newton used them to derive his theory of universal gravitation, which explains the mysterious force behind Kepler's Third Law.
To know more about Kepler's third law, visit:
https://brainly.com/question/1086445
#SPJ4
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.
Learn more about elements and mass here:
https://brainly.com/question/1622054
#SPJ4
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.
Learn more about the Beer-Lambert law here: https://brainly.com/question/8831959
#SPJ4
consider the electron configuration of the element mn. how many unpaired electrons are there in the ground state electron configuration of mn?
In its ground state in the d orbital, manganese possesses a total of five unpaired electrons.
Define Manganese.Manganese is a trace mineral that the body contains in very small amounts. The liver, kidneys, pancreas, and bones are where it is most commonly found. In the body, manganese helps to build sex hormones, connective tissue, bones, and blood clotting components. Additionally, it aids in calcium absorption, blood sugar regulation, and the metabolism of fats and carbs. Additionally essential for healthy nerve and brain function is manganese.
Superoxide dismutase (SOD), an antioxidant enzyme that aids in the battle against free radicals, is made up in part of manganese. Free radicals are produced by the body normally, but they can harm DNA and cell membranes. They might contribute to aging and the emergence of several diseases, such as cancer and heart disease.
To know more about Manganese, visit:
https://brainly.com/question/26448840
#SPJ4
If cell length is held constant, a lambert-beer’s law plot of a given analyte will result in a linear relationship between?.
If the length of the cell is constant, a beer-lambert law plot will give a linear relationship between the concentration and the wavelength.
The Beer-Lambert law states that there is a linear relationship between the concentration and absorbance of a solution and that the concentration of a solution can be calculated by measuring its absorbance.
The Beer-Lambert Law is a linear relationship between the absorbance of a solution and its concentration, molar extinction coefficient, and optical coefficient:
A = εCL
where A is the absorbance
ε is the extinction coefficient
C is the concentration
L is the length of the cell.
Learn more about the beer-lambert's law in
https://brainly.com/question/8831959
#SPJ4
Which of these molecular structures could be found in a lipid, but not a carbohydrate, protein, or nucleic acid?.
The molecular structures that could be found in a lipid, but not in a carbohydrate, protein, or nucleic acid is a long chain made only of carbon and hydrogen atoms.
What is a lipid?Lipids аre hydrophobic (“wаter-feаring”), or insoluble in wаter, becаuse they аre nonpolаr molecules. This is becаuse they аre hydrocаrbons thаt include only nonpolаr cаrbon-cаrbon or cаrbon-hydrogen bonds. Lipids perform mаny different functions in а cells. Cells store energy for long-term use in the form of lipids cаlled fаts.
Lipids аnd cаrbohydrаtes аre composed of cаrbon, hydrogen аnd oxygen аtoms. Proteins аnd nucleic аcids hаve nitrogen аtoms. However, even though lipids аnd cаrbohydrаtes hаve cаrbon, hydrogen аnd oxygen аtoms, cаrbohydrаtes аre mostly cyclic structures аnd not strаight chаin molecules like lipids аnd they do not hаve а long chаin mаde only of cаrbon аnd hydrogen аtoms.
Your question is incomplete, but most probably your full options were
A. a long chain of carbon, oxygen, and nitrogen atoms
B. a long chain made only of carbon and hydrogen atoms
C. a phosphate group joined to a chain of carbon atoms
D. an amino group and a carboxyl group bonded together
Thus, the correct option is B.
For more information about molecular structures refer to the link:
https://brainly.com/question/503958
#SPJ4
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)
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.
To know more about crenation from the given link
https://brainly.com/question/14799222
#SPJ4
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.
learn more about Rf values refer
https://brainly.com/question/26639192
#SPJ4
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.
To know about volume visit:
https://brainly.com/question/25252629
#SPJ1
How do you know if a valence shell is full?.
The Atoms which is fully occupied by 8 electrons in their outermost shell is said to be full valence shell.
If the atoms have 8 valence electrons in their outermost shell it is said to be compounds are full. this explains the octet rule. The full valence shell means, the valence shell is fully occupied and forms a stable octet. The halogens like Helium, Neon, Argon, Xenon, etc. have fully filled valence shells. Valence electrons are the electrons located at the outermost shell of an atom. full valence shell is the most stable electron configuration. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration. Group 0 elements that are helium, neon, argon, krypton, xenon and radon have full outer shells. atoms are most stable and least reactive when their outermost electron shell is full.
To know more about Valence shell Electrons please visit:
https://brainly.com/question/15216746
#SPJ4
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.
To learn more about the law of definite proportions, follow the link;
https://brainly.com/question/28458716
#SPJ1
the mineral stibnite, antimony(iii) sulfide, is treated with hydrochloric acid to give antimony(iii) chloride and hydrogen sulfide gas. part a what mass of sbcl3 is produced from a 3.05 g sample of stibnite?
The mineral stibnite, antimony(iii) sulfide, is treated with hydrochloric acid to give antimony(iii) chloride and hydrogen sulfide gas. Mass of sbcl3 is produced from a 3.05 g sample of stibnite will be 4.50 g.
Antimony(III) sulfide + hydrochloric acid → antimony(III) chloride and hydrogen sulfide gas.
Sb₂S₃ + HCl → SbCl₃ + H₂S
Sb₂S₃ + 6HCl → 2SbCl₃ +3H₂S
1 mol Sb₂S₃ : 2SbCl₃
Molar mass Sb₂S₃ = 339.715 g/mol
Number of moles = mass in grams / molar mass = 3.35 g / 339.715 g/mol = 0.00986 mol
1 mol Sb₂S₃ / 2 mol SbCl₃ = 0.00986 mol Sb₂S₃ / x
x = 0.01972 mol SbCl₃
Molar mass SbCl₃ = 228.13 g/mol
mass in grams = molar mass × number of moles = 228.13 g/mol × 0.01972 mol = 4.50 g.
In the food, textile, metal, and rubber sectors, hydrogen chloride (HCl) is frequently employed as a bleaching agent to neutralise alkaline substances. When discharged into the soil, it is neutralised, and when it comes into contact with water, it hydrolyzes quickly.
Learn more about hydrochloric acid :
https://brainly.com/question/24586675
#SPJ4
what is the atom for each formula of 4 P4010
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.
To know more about ideal gas equation, visit:
https://brainly.com/question/28837405
#SPJ4
HELP ME PLEASE JUST BALANCE THE EQUATION
Answer:
2CO2 + 3H2O ---> C2H5OH + 3O2
The working is in the picture.
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
To know more about heat visit:
https://brainly.com/question/16555534
#SPJ4
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:
https://brainly.com/question/11985826
https://brainly.com/question/2614077
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.
To know more about Concentration of molarity visit:-
https://brainly.com/question/15532279
#SPJ4
