The number of moles of sulfuric acid in the solution would be 0.005 mol.
Stoichiometric problemFirst, the balanced equation of the reaction is as below:
[tex]H_2SO_4 + 2NaOH -- > Na_2SO_4 + 2H_2O[/tex]
From the equation, the mole ratio of sodium hydroxide to sulfuric acid is 2:1. This means that for every 1 mole of sodium hydroxide used in the reaction, 0.5 moles of sulfuric acid is required.
Now, in this case, the indicator changed color after 0.01 mol of sodium hydroxide has been added to the sulfuric acid solution. This means that the reaction has been completed.
With 0.01 mol of sodium hydroxide used, the equivalent mole of sulfuric acid would be:
0.01/2 = 0.005 mol.
In other words, the number of moles of sulfuric acid in the solution would be 0.005 mol.
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Select the correct answer.
The benefits of a Supervised Agriculture, Experience include all the following EXCEPT
О А.
OB.
O c.
O D.
a guaranteed salary.
getting hands-on experience in the field.
developing skills those in agriscience need.
the opportunity to explore a potential career.
A. guaranteed salary.
Supervised Agricultural Experience (SAE)
A supervised agricultural experience (SAE) is an organized opportunity for experiential and work-based learning outside of the classroom in a setting other than a school setting that takes place outside of regular school hours in order to enhance a student's industry.
A few examples are cultivating and selling livestock or crops, making and selling farm machinery, purchasing and reselling feed, seeds, and fertilizer, running a pet-care business, or programming and installing computer hardware in tractors.
Programs for supervised agricultural experience fall into one of four categories: exploratory, entrepreneurial, placement, or research/experimentation. The SAE for each student is determined by their interests and the opportunities that are accessible.
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Vibrations of the hydrogen molecule can be H2modeled as a simple harmonic oscillator with the spring constant k=1.13x10^3N/m and mass m=1.67x10^-27 kg (a) What is the vibrational frequency of this molecule? (b) What are the energy and the wavelength of the emitted photon when the molecule makes transition between its third and second excited states?
The vibrational frequency of this molecule is 8.23×10¹⁴.
The energy of the emitted photon is 0.542eV.
The wavelength is 2290 nm.
The vibrational angular frequency:
W= √k/m = 8.23×10¹⁴
B) Energy difference= hw
∆E = 0.542eV
C) Wavelength = 1240/0.542 = 2290 nm
What is Wavelength?
Wavelength is equally commensurable to frequence, which refers to the number of surge cycles per second. The advanced the frequency of the signal, the shorter the wavelength. A sound surge is a disturbance pattern caused by the movement of energy through a medium, similar as air, water, or any other liquid or solid, as it propagates down from the sound source. A water surge is an illustration of a surge that involves a combination of longitudinal and transverse stir. An electromagnetic surge is created as a result of climate between an electric field and a glamorous field.To know more about Wavelength, click the link given below:
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Which of the following statements is true for ideal gases but is not always true for real gases?
(Select all that apply.)
a) Average molecular kinetic energy increases with temperature.
b) Replacing one gas with another under the same conditions has no effect on pressure.
c) There are no attractive forces between molecules.
d) Pressure is caused by molecule-wall collisions.
Replacing one gas with another under the same conditions, has no effect on pressure is true for ideal gases but is not always true for real gases.
What are ideal gases?A theoretical gas known as an ideal gas is made up of several randomly drifting point particles with no interparticle interactions. Because it complies with the ideal gas law, a condensed state equation and can be examined using statistical mechanics, the ideal gas concept is helpful.
Is nitrogen an ideal gas?Therefore, at room temperature (273 K), nitrogen is an acceptable "ideal gas," although CO2 and H20 may both be condense into liquids at the same temperature by applying pressure.
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An inlet stream consisting of 20% CH, and 80% water is fed into a continuous evaporator. The substances after the reaction will pass through the condenser, knowing the condenser's output consists of two streams, the steam stream containing C, H, CH3OH and water; dong long consists of the remains of C2H, CHOH and water. The vapor leaving the condenser cell will be recirculated and mixed with the original inlet stream before entering the reaction cell. Let the reaction take place as follows:
The vapor leaving the condenser cell will be recirculated and mixed with the original inlet stream before entering the reaction cell.
What is Thermal pollution?Thermal pollution is a term use to describe the final result caused from the water used as a coolant by power plants and/or industrial companies. It changes the water temperature and its quality. The substances after the reaction will pass through the condenser.
It is usually caused from humans or companies especially manufacturing companies - They use it for their personal needs. The end product of the water after being discarded is Thermal Pollution.
Therefore, The vapor leaving the condenser cell will be recirculated and mixed with the original inlet stream before entering the reaction cell.
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This graph shows the melting and boiling points of the alkali metals. Think about Francium, do you think it would have a higher or lower melting/boiling
point than lithium? Why? Can you predict it from the data?
There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, due to larger atomic size, francium has lower melting and boiling point than lithium.
What is periodic table?Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.
Francium has lower melting and boiling point than lithium because of the larger atomic size, due to which lattice energy becomes low.
Therefore, due to larger atomic size, francium has lower melting and boiling point than lithium.
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What mass (in grams) of fructose (C6H12O6) is contained in 125ml of a 0.500M fructose solution?
Taking into account the definition of molarity and molar mass, the mass of fructose contained in 125ml of a 0.500M fructose solution is 11.43 grams.
Definition of molarityMolarity is a measure of the concentration, which indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
molarity= number of moles of solute÷ volume
Molarity is expressed in units moles/L.
Molar massThe molar mass of substance is defined as its mass per unit quantity of substance. In other words, molar mass is the amount of mass that a substance contains in one mole.
Mass of fructoseIn this case, you have:
Molarity: 0.500 MNumber pf moles of fructose= ?Volume= 125 mL= 0.125 mL (being 1000 mL= 1 L)Replacing in the definition of molarity:
0.500 M= number of moles of fructose÷ 0.125 L
Solving:
0.500 M× 0.125 L= number of moles of fructose
0.0635 moles= number of moles of fructose
Being the molar mass of fructose 180 g/mole, the mass of the compound can be calculated as:
mass= molar mass× number of moles of fructose
mass= 180 g/mole× 0.0635 moles
mass= 11.43 grams
Finally, the mass of fructose is 11.43 grams.
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identify the types of business activities or operation
The types of business activities or operation are:
operatinginvesting financing.What are types of business activities ?The main types of business activities can be seen as the operating, investing, as well as the financing.
Investing business activities can be described as one that is capitalized over more than one year and it involves how the purchase of long-term assets is made and it can be recorded as a use of cash in the section.
Operating activities can be described a the daily activities of a company which could encompass the process of producing and selling its product, generating revenues, a which can aswell involves the maintenance activities.
Financing activities can be described as the transactions between a business as well as the lenders and owners to acquire or return resources it can be seen as the activities to fund the company, repay lenders.
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How many moles is equal to 44.27 grams of CO2?
Answer: 1.005919176541433
Explanation:
44.27 grams of CO2 is 1.0059 moles
as per given in the question,
the mass of [tex]Co_{2}[/tex] is given as 44.27g
need to find how many moles are equal to 44.27g
The molar mass of 1 mole of
[tex]Co_{2}[/tex]= Molar mass of C +2 x Molar mass of O
[tex]Co_2[/tex] = 12 + 2 x 16
[tex]Co_2[/tex]= 12 + 32 = 44 g
=> 44 gm of [tex]Co_2[/tex] = 1 mole of [tex]Co_2[/tex]
so, now 44.27 g of [tex]Co_2[/tex] is equal to [tex]\frac{given\ weight}{weight\ of \ 1 mole\ of\ compound }[/tex]
i.e,
number of moles of [tex]Co_2[/tex] = [tex]\frac{44.27}{44}[/tex]
number of moles of [tex]Co_2[/tex] = 1.0059 moles
the number of moles of 44.27 grams of [tex]Co_2[/tex] is 1.0059 moles
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what species are present in solution following the complete neutralization of sulfuric acid with potassium hydroxide?
Answer:
H2SO4 + 2KOH → K2SO4 + 2H2O
Explanation:
In a neutralization reaction between an acid and a base, the positive ion from the base and the negative ion from the acid usually form a salt. In this case, the positive potassium ion (K+) bonds with the polyatomic sulfate ( S O 2 4 ) to form the salt K 2 S O 4.
The water H O H or H 2 O is formed by the positive hydrogen (H + ) ion from the acid and the negative hydroxide ion (OH) from the base.
how many moles of hydrogen gas are produced from the reaction of 4.75 moles of zinc and an excess amount of hydrochloric acid
In the given question, the moles of hydrogen that can be obtained from the reaction is 4.75 moles.
The reaction of zinc with hydrochloric acid can be written as:
Zn + 2HCl ⇒ ZnCl₂ + H₂
This reaction is a displacement reaction, in which zinc displaces hydrogen from hydrochloric acid. Hydrogen is released from HCl and hydrogen gas appears at the end of the reaction.
It can be seen that 1 mole of zinc combines with 2 moles of HCl to produce 1 mole of hydrogen gas. If 4.75 moles of zinc is combined with an excess amount of HCl, then it will produce 4.75 moles of H₂.
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A pure substance does not conduct electricity in the solid state but it does dissolve in water and the resulting solution conducts electricity. The substance has a fairly high
melting point. The substance is most likely to be what type of compound?
An ionic compound
A crystalline compound
A covalent compound
A metallic compound
Use these two constants for the question that follows:
e = 1.6 × 10−19 C
k = 8.99 × 109 N m2/C2
Two positive charges are 10−16 m away from each other. Using Coulomb's law, what is the strength of the force of attraction between these two particles?
144 N
160 N
230 N
287 N
The force of repulsion between the positive charges has a magnitude of 230 N. Option B
What is the Coulomb's law?We know that the Coulomb's law deals with the way that two charges are able to interact. The interaction between the two charges could be such that the charges are attracted to each other or the charges are repelled from each other.
The forces of attraction and repulsion are the bases of the Coulomb's law. According to the Coulomb's law, the forces of attraction or repulsion between two charges would depend on the product of the magnitudes of the charges and inversely proportional to the distance that separates the charges.
Hence;
F = K[tex]q_{1}[/tex][tex]q_{2}[/tex]/r^2
F = Coulomb's force
[tex]q_{1}[/tex]and [tex]q_{2}[/tex] = magnitude of the charges
r = distance of separation
Then;
F = 8.99 × 10^9 * (1.6 × 10^−19)^2/(1 * 10^-16)^2
F = 2.3 * 10^3 N
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Oxygen and chlorine gas are mixed in a container with partial pressures of 3040 mmHg and
1.63 atm, respectively.
What is the TOTAL pressure inside the container in atm? *Don't forget to convert: 760mmHg
= 1atm*
Answer:5.63 atm
Explanation: Dalton's Law states that total pressure of a mixture of gasses is equal to the sum of partial pressure of each gas.
[tex]P_{tot} = P_{1} +P_{2}+ P_{3}...[/tex]
We are given pressure O2 and pressure Cl2.
Step 1: First, convert 3040mmHg to atm by dividing by 760.
[tex]\frac{3040mmHg}{760atm} = 4 atm[/tex]
Step 2: Plug your numbers into the equation
[tex]P_{tot} = P_{O2} +P_{Cl2}[/tex]
[tex]P_{tot} = 4atm + 1.63 atm = 5.63 atm[/tex]
A metallic ion is known as a..
Question 8
How many grams are in 3.9 moles of C3H5C13?
1
Answer:
Explanation:
To determine the number of grams in 3.9 moles of C3H5C13, we need to first determine the molar mass of C3H5C13. The molar mass of a substance is the mass of one mole of the substance, and it is calculated by adding up the atomic weights of all the atoms in the molecular formula.
In the case of C3H5C13, the molar mass is calculated as follows:
Molar mass of C3H5C13 = (3 x 12 g/mol) + (5 x 1 g/mol) + (13 x 35.5 g/mol) = 106.5 g/mol
Next, we need to multiply the molar mass by the number of moles to determine the number of grams:
3.9 moles x 106.5 g/mol = 421.05 g
Therefore, there are 421.05 grams in 3.9 moles of C3H5C13.
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3 points
You are starting your own business. Congratulations! A bank has reviewed your business plan with you and has created a model of the expected value of your
company. The graph shows the expected value (y) in hundreds of thousands of dollars over bx years.
What are the zeros of the function and what do they mean for your company?
Answer:yes
Explanation:
Scientists used radioactive hydrogen to make water. They grew plants using radioactive water. What happened to the radioactive hydrogen during photosynthesis? (1 point)
(A) It was recycled into water.
(B) It was recycled into light.
(C)It was recycled into glucose.
(D)It was recycled into hydrogen gas.
Radioactive hydrogen during photosynthesis It was recycled into glucose .The correct "option is C"
What is photosynthesis ?Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Therefore during this process hydrogen is combined with carbon dioxide to make glucose.
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suppose 0.086 mol of br2 is placed in a 1.26 l flask and heated to 1756 k, a temperature at which the halogen dissociates into atoms:
The halogen dissociates into atoms at 1756 K : the dissociation is 3.7 %. The value of Kc is 3.8 × 10⁻⁴.
the reaction is given as:
Br₂(g) ⇄ 2Br(g)
moles of Br₂ = 0.086 mol
volume = 1.26 L
concentration of [Br₂] = 0.086 / 1.26
= 0.0682 M
Br₂(g) ⇄ 2Br(g)
initial 0.0682 0
-x 2x
eq. 0.0682 - x 2x
the dissociation = 3.7 %
x = 0.0682 × 0.037
x = 0.00252
the equilibrium constant Kc is given as :
Kc = [Br]² / [Br₂]
Kc = ( 2 × 0.00252 )² / ( 0.0682 - 0.00252 )
Kc = 3.8 × 10⁻⁴
Thus, suppose 0.086 mol of Br₂ is placed in a 1.26 l flask and heated to 1756 k, a temperature at which the halogen dissociates into atoms: the dissociation is 3.7 % .then the value of Kc is 3.8 × 10⁻⁴.
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What is the meaning of "implicit"?
A) Found in a text
B) Implied by the text
C) Stated directly
D) Stated from evidence
yoo anyone know this one>
Which element, represented by X, reacts with chlorine to produce the compound XCl2?
Aluminum
Sodium
Calcium
Argon
Answer:
C.) Calcium
Explanation:
Because none of the answer choices are nonmetals, we can safely assume this compound is not covalent. This means that the atoms involved in this molecule were ions before they bonded.
Chlorine, located in the 17th column, typically ionizes to become the anion Cl⁻. This anion has a negative charge of -1. The subscript indicates that there are 2 chorine ions in the compound, increasing the overall negative charge to -2 (2 x -1 = -2).
Since ionic compounds are neutral, the correct answer choice is the atom that ionizes to form a cation that can make the overall charge of the compound 0. As such, the cation needs to have a positive charge of +2 (+2 + (-2) = 0).
Aluminum = Al³⁺
Sodium = Na⁺
Calcium = Ca²⁺
Argon = does not typically ionize
Therefore, calcium must be the unknown element (X), making the compound CaCl₂.
Mechanism and products
There are so many types of chemical reaction reaction like combination reaction, double displacement reaction, nucleophilic substitution reaction etc. Therefore, the reaction is nucleophilic substitution reaction. The product formed is 1-bromo-2-methyl-2-phenylethane.
What is nucleophilic substitution reaction?One nucleophile substitutes another in a family of organic reactions known as nucleophilic substitution reactions.
The characteristics of SN1 mechanism:
SN1 stands for nucleophilic substitution reaction.
Leaving group, a nucleophile, electrophile and a solvent are present
Because a link is being severed, the first step is the most laborious.
In the given reaction, firstly H⁺ will attack OH to make good leaving group, then generation of carbocation will take place. Thereafter Br⁻ will attack the carbocation forming C-Br bond. The product formed is 1-bromo-2-methyl-2-phenylethane.
Therefore, the reaction is nucleophilic substitution reaction. The product formed is 1-bromo-2-methyl-2-phenylethane.
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Calculate the value of the reaction quotient, Q, for the galvanic cell expressed using shorthand notation below.Use the balanced chemical equation that has the smallest, whole number stoichiometric coefficients.Zn(s) | Zn^2+(aq, 0.0100 M) || Ag+(aq, 1.25 M) | Ag(s)
The value of the reaction quotient, Q, for the galvanic cell for the galvanic cell expressed using shorthand notation is 64×10 ^−3
Zn(s)+2Ag (1.25M)Zn2+ (0.01M)+2Ag in a cell (s).
Q= [Zn ^2+ ]/[Ag ^⊕ ]
Q= 0.01 / (1.25)^2
Q= 64×10 ^−3
What is galvanic cell?An electrochemical cell called a galvanic cell or voltaic cell, respectively named after the scientists Luigi Galvani and Alessandro Volta, produces an electric current by spontaneous oxidation-reduction reactions.Voltaic or galvanic cells are electrochemical devices that use spontaneous oxidation-reduction events to generate electricity.A galvanic cell is an electrochemical cell that uses a chemical process to generate electricity. The electrolytic cell propagates a chemical process using an electric current. Chemical energy is transformed into electrical energy in this cell. Electrical energy is transformed into chemical energy.For more information on galvanic cell kindly visit to
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which of the following cofactors would be required to transfer a carboxyl group onto pyruvate to form oxaloacetate?
The cofactors would be required to transfer a carboxyl group onto pyruvate to form oxaloacetate is biotin.
What is pyruvate carboxylase?Pyruvаte cаrboxylаse (PC) is а mitochondriаl enzyme bound to biotin thаt cаtаlyzes the conversion of pyruvаte to oxаloаcetаte when аbundаnt аcetyl CoА is аvаilаble, replenishing Krebs cycle intermediаtes in the mitochondriаl mаtrix. PC pаrticipаtes in gluconeogenesis, lipogenesis, аnd neurotrаnsmitter synthesis.
Pyruvate carboxylase is found in the mitochondria and catalyzes the following reaction:
Pyruvate + CO2 + ATP → oxalacetate + ADP
Your question is incomplete, but most probably your full question was
Which of the following cofactors would be required to transfer a carboxyl group onto pyruvate to form oxaloacetate?
A. Thiamine pyrophosphate
B. Tetrahydrofolate
C. Ascorbic acid
D. Cobalamin
E. Biotin
Thus, the correct answer is E.
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Please help I need this by tomorrow morning!!!!
Are the following chemical reactions balanced? explain why or why not.
the reaction between solid copper and nitric acid to form copper ii ion nitrogen monoxide gas and water is represented by the folloiowng eqation
The reaction between solid copper and nitric acid to form copper ii ion nitrogen monoxide gas and water is represented below- - Cu(s) + 4 HNO3(aq) → Cu(NO3)2(s) + 2 NO2(g) + 2 H2O(l).
What is reaction?
One or more chemicals, sometimes referred to as reactants, are changed into one or more new substances, referred to as products, during a chemical reaction.
What is copper?
Throughout the body, copper is a mineral. It maintains the health of your nerve cells and immune system and aids in the production of red blood cells in your body. Additionally, it aids in the formation of collagen, which is essential for the formation of bones and connective tissue. By lowering free radicals that can harm DNA and cells, copper may also have antioxidant properties.
With dilute nitric acid:
3 Cu(s) + 8 HNO3(aq) → 3 Cu(NO3)2(s) + 2 NO(g) + 4 H2O(l)
With conc. nitric acid:
Cu(s) + 4 HNO3(aq) → Cu(NO3)2(s) + 2 NO2(g) + 2 H2O(l)
Therefore, reaction between solid copper and nitric acid to form copper ii ion nitrogen monoxide gas and water is represented below- Cu(s) + 4 HNO3(aq) → Cu(NO3)2(s) + 2 NO2(g) + 2 H2O(l).
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Calculate the number of particles in 5.60 moles of ammonium sulfate.
The number of particles in 5.60 moles of ammonium sulfate is equal to 5.06 × 10²⁵ atoms.
What is Avogadro's number?Avogadro’s number expresses the number of chemical entities in one mole of a given substance. Generally, Avogadro’s number can express electrons, protons, molecules, atoms, and ions, depending upon the type of chemical reaction or reactant.
The value of Avogadro’s constant is found to be approximately equal to 6.022× 10²³ mol⁻¹.
Given, the number of moles of ammonium sulfate. = 5.60 mol
The molecular formula of ammonium sulfate is (NH₄)₂SO₄.
Number of molecules of ammonium sulfate in one mole = 6.022 × 10²³
The number of atoms in ammonium sulfate in one molecule = 15
Number of atoms of ammonium sulfate in one mole = 15× 6.022 × 10²³
The number of particles in 5.60 mol in (NH₄)₂SO₄ = 15× 6.022 × 10²³×5.60
= 5.06 × 10²⁵ atoms
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If an unknown mass of aluminum dropped into a solution of CuCl2 * 2H20, and the temperature change was 11 degrees Celsius, what would have been its mass
Aluminum and copper(II) chloride react very vigorously, causing the reaction mixture to become extremely hot as heat is produced, the aluminum foil to disintegrate, a reddish brown solid to appear, and gas bubbles to be released.
What is copper chloride ?The chemical compound with the formula CuCl2 is copper(II) chloride. Anhydrous form is yellowish brown, but it slowly takes on moisture to become a dihydrate that is blue-green. The extremely uncommon minerals tolbachite and eriochalcite both naturally occur in the anhydrous and dihydrate forms.
The limiting reagent will be copper (II) chloride. The mole ratio is the most crucial tool you'll have to tackle this problem, or any other stoichiometry problem, for that matter. Keep in mind that in order to make 3 moles of copper from 3 moles of copper (II) chloride, you need 2 moles of aluminum.
Thus, Aluminum and copper(II) chloride react very vigorously, causing the reaction mixture to become extremely hot as heat is produced.
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In what order would you put these stages of melting candle wax, for the correct answer?
Liquid wax heating
Melting
Boiling
Gaseous wax heating
Solid Wax heating
Answer:
The correct order for the stages of melting candle wax is:
Solid wax heatingMeltingLiquid wax heatingBoilingGaseous wax heatingExplanation:
How is density different than weight?
Answer:
Density is the substance's mass per unit of volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume.
Weight is a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
One mole of carbon has a mass of 12 grams. One mole of sulfur has a mass of 32 grams. Why does one mole of each element not have the same mass?
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, one mole of each element not have the same mass as mole is directly proportional to the given mass.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically,
mole =given mass ÷ molar mass
For carbon For sulfur
number of moles of carbon= 1 number of moles of sulfur=1
mass of 1 mole of carbon=12g mass of 1 mole of sulfur=32 gram
From calculation
Molar mass of carbon=12g/mol Molar mass of sulfur=32g/mol
Therefore, one mole of each element not have the same mass as mole is directly proportional to the given mass.
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