Answer:
Explanation: We all have some knowledge of what specific heat is, after all, we have gone through Physics in High School.
It is the amount of heat that required to raise the temperature of a certain substance by a certain amount. The amount of heat depends on the properties of the substance. This means that the amount of heat will vary for different substances.
Specific heat is a measure of how thermally insensitive a substance is when it’s subjected to an addition of energy. This specific heat calculator is a tool to help you calculate the specific heat of different substances.
Energy 63000 joules
Change of tempreture 3 c
mass 5 kg
Answer:Heat energy required is 2593.5 joule energy
Explanation:The formula to calculate heat energy is,
Q=m*c*temperature difference
Q=125*0.390*(75.4-22.2)
Q=2593.5J
Hope the explanation was helpful.
Which of the following solvents would be good to use for 'H NMR analyses?
a. Acetone
b. dimethyl sulfoxide
c. chloroform-d
d. acetone-d6
e. deuterium oxide
The solvents that can be utilised for proton NMR analysis are deuterium oxide, chloroform-d, and acetone-d6. This is due to the deuteration of all the aforementioned solvents.
What is meant by deuteration?
Deuteration refers to the action of adding deuterium to a molecule and chemical mixture.
What is the process of deuteration?
Chemical deuteration is subjecting complete molecules to fresh water (deuterium oxides) at high pressure and temperature in the presence of an acid catalyst, deuterating them, or using them as the construction blocks for the production of a desired molecule.
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How many moles are in 1.23 x 1024 atoms of Calcium (Ca)?
The amount of substance of a system which contains as many elementary entities is called as mole. 2.05 moles are in 1.23 x 1024 atoms of Calcium (Ca).
What is mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.The mole is called as containing exactly 6.023 × 10 ²³ elementary unit.
The mole is a convenient unit to use because of the great number of atoms, molecules. It is represented by symbol "mol".
1 mole of calcium = 6.023 × 10 ²³
1 mole ⇒ 6.023 × 10 ²³
X ⇒ 1.23 x 10²⁴
X = 12.3 x 10²³ / 6.023 × 10 ²³
= 2.05 moles
Thus, 2.05 moles are in 1.23 x 1024 atoms of Calcium (Ca).
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what type of analysis of chemical and physical indicators of process variables does process instrumentation provide?
The parameter whose quantity has to be measured in a process is known as a process variable (PV). Examples of parameters include electrical conductivity, level, pressure, and temperature.
What kind of instrumentation is an instance of?A mechanical thermostat, which is used to manage a home heater and, consequently, to control room temperature, is a very basic illustration of an instrumentation system. A bi-metallic strip is typically used to detect temperature. On the strip's free end, a needle on which indicates temperature.
What does the instrumentation work entail?You will test, calibrate, install, maintain, repair, and inspect manufacturing machinery and monitoring equipment as an instrumentation technician. Along with designing new measuring and recording devices, you will also do general maintenance on the equipment.
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Construct the octahedral crystal-field splitting diagram for the metal in each species. V(H_2O)_6^3+ Co(CN)_6^3- Mn(H_2O)_6^2+
The d orbitals are divided into two subgroups in the octahedral crystal field: three t2g and two eg orbitals that are spaced apart by energy.
What does octahedral mean?the octahedral complex's crystal field splitting. When a ligand is present, crystal field splitting is the splitting of a degenerate level. The energy gap between the t2g & eg levels is represented by "o." .
What is an octahedral mineral?A closed crystallographic structure with eight equilateral triangle-shaped faces and isometric symmetry; often known as a regular octahedron to distinguish it from the more general definition provided below. commonly seen in isometric minerals including diamond, pyrite, fluorite, and magnetite.
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The d orbitals are divided into two subgroups in the octahedral crystal field: three t2g and two eg orbitals that are spaced apart by energy.
What does octahedral mean?the octahedral complex's crystal field splitting. When a ligand is present, crystal field splitting is the splitting of a degenerate level. The energy gap between the t2g & eg levels is represented by "o." .
What is an octahedral mineral?A closed crystallographic structure with eight equilateral triangle-shaped faces and isometric symmetry; often known as a regular octahedron to distinguish it from the more general definition provided below. commonly seen in isometric minerals including diamond, pyrite, fluorite, and magnetite.
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you have been asked to develop a 2m solution of naoh that will be used in an acid-base neutralization reaction for emergency spill response. if you need to have 1 l of the solution available, how much naoh will you need to dissolve in water to achieve this concentration?
To make a 2M solution of NaOH, you will need to dissolve 2 moles of NaOH in every liter of water.
What is dissolve?Dissolve is a process in which a solid substance is broken down into smaller particles and mixed with a liquid so that it becomes evenly distributed. This process can be used to mix ingredients, create a solution, or even to form a new substance. Dissolving occurs when the molecules of a solid substance become attracted to the molecules of a liquid. The combination of the two materials results in the liquid taking on the properties of the solid.
Since you need 1L of the solution, you will need to dissolve 2 moles of NaOH in that liter of water.
This means that you will need to add 40g of NaOH (2 moles x 20 g/mol) to 1 liter of water to achieve a 2M solution.
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in the beta oxidation pathway, what is the product of the enzyme acyl coa-dehydrogenase? assume the starting saturated fatty acid contains n carbons and n is an even number. ch3(ch2)n-4coch2co-coa ch3(ch2)n-2co-coa ch3(ch2)n-4hc
In the beta oxidation pathway, the product of the enzyme acyl coa dehydrogenase is CH3CO-CoA(acety coA).
Describe oxidation.Initially, the word "oxidation" was used to refer to chemical processes in which a element reacts with oxygen. An illustration of this is the oxidation on magnesium in the formation of magnesium oxide when magnesium and oxygen react.
What transpires throughout oxidation?An electron transfer occurs during oxidation. In other words, electrons are lost during oxidation. The reverse of oxidation is a process called reduction, which results in an electron gain. The magnesium ion loses electrons in the mechanism described above, forming magnesium oxide.
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Why was the actual acceleration of mass a you calculated in question 2d less than the expected acceleration calculated in question 2a?
While acceleration generally decreases as mass increases, it tends to increase as force increases.Therefore, the greater force acting on more massive objects is counteracted by the enhanced inverse effect of mass.
What relationship do you suppose exists between the two masses and the rate that the heavier object descends?It is obvious from the expression above that the acceleration will be higher with a larger difference in masses.Therefore, the heavier object will move faster if the difference in mass between the two objects is higher.
Why does having less mass make acceleration easier?Mass times acceleration equals force.Therefore, the force needed to move anything will be less the smaller the mass.Additionally, less force is needed the slower your move the object.
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chlorine gas occupies a volume of 25 ml at 27 degrees celsius. what volume will it occupy at 327 degrees celsius?
Chlorine gas occupies a volume of 25 mL at 27 degrees Celsius. What volume will it occupy at 327 degrees Celsius IS 50 mL.
What is chlorine used for?Its most important use is as a bleach in the manufacture of paper and cloth, but it is also used to make pesticides (insect killers), rubber, and solvents. Chlorine is used in drinking water and swimming pool water to kill harmful bacteria.
Is chlorine harmful to human health?Exposure to low levels of chlorine can result in nose, throat, and eye irritation. At higher levels, breathing chlorine gas may result in changes in breathing rate and coughing, and damage to the lungs. Additional symptoms of exposure to chlorine can be severe.
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what two things form the vertical sidepieces of the ladder
Sugar and phosphate are the two things form the vertical sidepieces of the ladder.
A with T and C with G are the base pairs that are formed when DNA nucleotides are joined together. Each base also has a phosphate and sugar molecule attached to it. A base, a sugar, and a phosphate make up a nucleotide. Two lengthy nucleotide strands spiral together to form the double helix. The sugar and phosphate molecules act as the ladder's vertical siderails and the base pairs act as the ladder's rungs in the double helix structure.
One essential property of DNA is its capacity to replicate, or create copies of itself. Each DNA strand of the double helix contains the instructions for reproducing the base sequence. When cells divide, this is crucial because each new cell must have an exact duplicate of the DNA found in the old cell.
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how many valence electrons is is 4.78 million kg of sulfur please show ur work with dimensional analysis
The number of valence electrons that would be in 4.78 million kg of sulfur would be 5.3078 x [tex]10^{32[/tex] valence electrons.
What are valence electrons?Valence electrons are the electrons that are present in the outermost shell of atoms. Each atom of sulfur has 6 valence electrons.
Now, we need to find the total number of atoms that would be present in 4.78 million kg of sulfur.
According to Avogadro, 1 mole of any substance contains 6.022 x [tex]10^{23[/tex] atoms.
4.78 million kg of sulfur = 4,700,800 kg = 4,700,800,000 grams
Mole = mass/molar mass
Mole of 4,700,800,000 grams sample of sulfur = 4,700,800,000/32
= 146900000 moles
146900000 moles = 146900000 x 6.022 x [tex]10^{23[/tex] atoms
= 8.8463 x [tex]10^{31[/tex] atoms
Now each atom of sulfur contains 6 valence electrons. Thus, total number of valence electrons would be:
6 x 8.8463 x [tex]10^{31[/tex] = 5.3078 x [tex]10^{32[/tex] valence electrons
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how many dots would appear on the lewis electron dot diagram for an atom whose electron notation ends in 6s25d106p4?
An atom with an electron notation of 6s25d106p4 would have 6 dots on the Lewis electron dot diagram.
Are Lewis and electron dots the same?Lewis dot structures, also known as electron dot structures, are schematics that show the interatomic chemical bonds in a molecule. Additionally, they show how many lone pairs there are overall in each of the atoms that make up the molecule.
How is the electron dot sign read?Each symbol stands for the atom's nucleus and central electrons. Each "H" in this diagram stands for the nucleus of an atom of hydrogen, and each "O" for the nucleus and two core electrons of an atom of oxygen. The dots signify valence electrons that are not in bonds.
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na2so4(aq) cacl2(aq) - caso4(s) 2nacl(aq) now that we have a balanced chemical equation, let's write the ionic equation: [] a. na2so4(aq) b. 2na (aq) so4 (aq) c. na (aq) s0 - (aq) d. na2so4(s)
For the balanced equation na2so4(aq) cacl2(aq) - caso4(s) 2nacl(aq) the ionic equation is in the order of B, D , A ,A
To write the ionic equation for the reaction: Na2SO4(aq) + CaCl2(aq) → CaSO4(s) + 2NaCl(aq). we need to separate the strong electrolytes (ions) from the weak electrolytes (molecules) and the insoluble compounds (precipitates).
a. Na2SO4(aq) is a strong electrolyte, so it will dissociate into its ions in water:
Na2SO4(aq) → 2Na+(aq) + SO4²-(aq)
b. CaCl2(aq) is also a strong electrolyte, so it will dissociate into its ions in water:CaCl2(aq) → Ca²+(aq) + 2Cl-(aq)
c. CaSO4(s) is an insoluble compound and will not dissociate into ions, so it is written as it is.
d. NaCl(aq) is a strong electrolyte, so it will dissociate into its ions in water: NaCl(aq) → Na+(aq) + Cl-(aq) So the final ionic equation is: 2Na+(aq) + SO4²-(aq) + Ca²+(aq) + 2Cl-(aq) → CaSO4(s) + 2Na+(aq) + 2Cl-(aq)It's worth noting that the coefficients in the balanced equation are the same in the ionic equation, this is because the coefficients represent the number of moles of the reactants and products, and ions are not affected by the chemical reactions.
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3. calculate the molarity of a solution that is prepared by dissolving 2.24 grams of naoh in enough deionized water to make 500.0 ml of solution? the molar mass of naoh is 40.0 g. molarity
The molarity is 0.112 M. if that is prepared by dissolving 2.24 grams of naoh in enough deionized water to make 500.0 ml of solution .
What is molarity and its SI unit?Molarity is mathematically defined as Molarity = Number of moles of solute Volume of solution in litre. As the number of moles solute is measured in mol and the volume of solution will be in litre . So, the unit of molarity is mol L - 1 .
Is 1M molarity?Molarity also known as molar concentration and is represented by “M”. For example, solution of 1M of sodium chloride dissolved in water has a molarity of 1M. A number of moles of solute can be calculated by dividing mass by the molecular weight of the solute.
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Choose the proper whole-number coeffi-
cients for each substance to yield a balanced
equation.
d
1. 2, 1, 2
2.1, 1, 1
3. 1, 2, 1
4. 2, 1,1
The correct whole-number coefficients for each substance are required to produce a balanced equation. 2, 1, 2 (option 1). (option 1).
A balanced equation is what?When mass is preserved and the number of atoms of each element on either side of the equation is equal, the chemical equation is said to be balanced.
Give an example of the balance equation.Think of the response, for instance: 2Mg(s) + O2 (g) 2MgO (g) On both sides of the reactant and product in this reaction are two atoms each of magnesium and oxygen. Determining that the reaction mechanism is a balanced equation equation, it follows the law of conservation of mass.
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What will always make atoms of one element different from all the other elements?
Atoms of one element will always be different from all the other elements because of their atomic number.
The atomic number is the number of protons in the nucleus of an atom. Each element has a unique atomic number, which determines the number of protons in the nucleus and, in turn, the number of electrons that orbit the nucleus. It defines the chemical properties and behavior of an element.
For example, Hydrogen has an atomic number of 1, and Helium has an atomic number of 2.
Because of this unique number of protons, the atoms of each element have unique properties and behave differently in chemical reactions.
It's worth noting that, isotopes of an element have the same atomic number, but different number of neutrons in the nucleus, this gives them the same chemical properties but different physical properties, like atomic mass.
5 H2O2 (aq) + 2 MnO4 - (aq) + 6 H+ (aq) → 2 Mn 2+ (aq) + 8 H2O (l) + 5 O2 (g) . In a titration experiment, H2O2 (aq) reacts with aqueous MnO4 - (aq) as represented by the equation above. The dark purple KMnO4 solution is added from a buret to a colorless, acidified solution of H2O2 (aq) in an Erlenmeyer flask. (Note: Ath the end point of the titration, the solution is a pale pink color.)
In the titration you described, the unknown solution is an acidified hydrogen peroxide (H2O2) and the known solution is a dark purple solution of potassium permanganate (KMnO4). The reaction between these two solutions is represented by the balanced equation you provided:
5 H2O2 (aq) + 2 MnO4 - (aq) + 6 H+ (aq) → 2 Mn 2+ (aq) + 8 H2O (l) + 5 O2 (g)
Titration is an experimental technique used to determine the concentration of a solution of an unknown concentration by slowly adding a solution of a known reactant concentration until a specific reaction endpoint is reached.
The endpoint is typically indicated by a change in color, pH, or the formation of a precipitate, among other things.
When the endpoint of the titration is reached, the solution is a pale pink color, indicating that the reaction between the H2O2 and KMnO4 is complete.
From the balanced equation and stoichiometry, we know that for every five molecules of H2O2, two molecules of MnO4- are needed to neutralize it. So the number of moles of KMnO4 used in the titration is directly related to the number of moles of H2O2 present in the solution.
The concentration of H2O2 can be calculated by dividing the number of moles of H2O2 by the volume of the solution.
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Part A
Calculate the concentration (in M ) of the unknown NaOH solution in the first case.
NaOH Volume (mL) HCl Volume (mL) [HCl] (M)
8.00 mL 8.17 mL 0.2099 M
Express your answer using three significant figures.
The concentration of the NaOH solution can be calculated using the following equation
What is solution?A solution is a means of resolving a problem or addressing a challenge. Solutions can be found through creative thinking and problem-solving techniques. It is important to consider all possible solutions when presented with a challenge and to evaluate each one based on its benefits, drawbacks, and feasibility. Ultimately, the goal of any solution is to improve the situation and provide a better outcome.
[NaOH] = [HCl] x (VHCl/VNaOH)
[NaOH] = 0.2099 M x (8.17 mL/8.00 mL)
[NaOH] = 0.2195 M (3 sig figs)
Therefore, the concentration of the unknown NaOH solution is 0.2195 M.
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A) calculate the standard enthalpy change for the reaction
2A+B⇌2C+2D
Use the following data:
Substance ΔH∘f
(kJ/mol)
A -245
B -387
C 223
D -523
B)
For the reaction given in Part A, how much heat is absorbed when 3.70 mol of A reacts?
The standard enthalpy change for the reaction 2A+B⇌2C+2D is 664 kJ/mol and The heat that is absorbed when 3.70 mol of A reacts is 2456.8 J
The heat changes that take place as reactants combine to generate a product are measured by the enthalpy of a reaction.
The following formula can be used to determine the enthalpy change of a reaction:
Hess's law states that
Enthalpy of reaction = product's enthalpy - the reactant's enthalpy.
Considering the given reaction: 2A + B ⇌ 2C + 2D
Enthalpy of reaction = product's enthalpy - the reactant's enthalpy.
Enthalpy of reaction (ΔH°f) = (2 C + 2 D) - (2 * A + B)
Enthalpy of reaction (ΔH°f) = {[2(223) + 2(-523)] - [2(-245) + 2(-387)]}
Enthalpy of reaction (ΔH°f) = 664 kJ/mol
ΔH = q ÷ n
ΔH = molar enthalpy (heat) of solution
q = amount of energy (heat) released or absorbed
n = moles of solute
so. q = ΔH xn
q = ΔH xn
q = 664 kJ/mol x 3.70 mol
Q= 2456.8 J
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a student is given the task of determining the concentration of a propanoic acid solution of unknown concentration. a 0.173 m naoh solution is available to use as the titrant. the student uses a 25.00 ml volumetric pipet to deliver the propanoic acid solution to a clean, dry flask. after adding an appropriate indicator to the flask, the student titrates the solution with the 0.173 m naoh, reaching the end point after 20.52 ml of the base solution has been added. calculate the molarity of the propanoic acid solution
The propanoic acid solution has a molarity of 0.142 M.
Is molarity same as concentration?Molar concentration, also called as molarity, quantity concentration, or substance ability to focus, is a unit used to quantify the amount of a solute in a solution expressed as a percentage of its volume.
The chemical reaction carried out here is given by, CH3 CH2COOH + NaOH → CH3CH2COONa+H2O
We can observe from the above balanced reaction that 1 mol of propanoic acid may neutralize 1 mol of NaOH.
Given that,
Molarity of NaOH M(1) = 0.173 mol/L
Volume of NaOH added to reach the end point, V(1) = 20.52 mL = 0.02052 L
Hence, No.of moles of NaOH added is given by,
n = M(1) X V(1) = 0.173 mol/L x 0.02052 L
n=3.54996 x 10-3 mol
This will be equal to the no.of mole of propanoic acid reacted.
Given that the volume of the propanoic acid,
V(2) = 25.00 mL = 0.025 L
Hence, molarity of the propanoic acid is given by,
M(2) n/V(2)= 3.54996 x 10^-3 mol /0.025 L
M2 = 0.142 mol/L = 0.142 M
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what is the standard potential, in volts, of a galvanic cell made of ce4 and cu2 , given the standard reduction potentials below? (3 points) ce4
The standard potential in volts of galvanic cell would be 1.27 V.
The tendency of a chemical species to be reduced, expressed in volts under normal conditions, is known as the standard reduction potential. The standard reduction potential belongs to the group of potentials known as standard electrodes or standard cells. The difference in voltage between the cathode and anode is known as the standard cell potential. A galvanic cell or voltaic cell is an electrochemical device that transforms the chemical energy of spontaneous redox reactions into electrical energy. electrical cell A voltaic cell is an electrochemical device that produces electricity through chemical processes.
We know that
Ce[tex]_{4}[/tex]+ + e− → Ce[tex]_{3}[/tex]+ Eº = 1.61 V
Cu(s) ==> Cu[tex]^{2}[/tex]+ + 2e Eº = -0.34 V
E of cell = 1.61 + (-0.34) = 1.27 v
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1. how do the following physical properties depend on the strength of intermolecular forces? a. surface tension b. viscosity c. melting point d. boiling point e. vapor pressure
The option is e. vapor pressure. Intermolecular forces are the forces that connect two molecules. The strength of intermolecular forces influences physical properties.
As intermolecular forces increase, so do melting, boiling, and freezing points. As intermolecular forces increase, vapor pressure decreases. The greater the intermolecular force. A mixture of intramolecular and intermolecular forces holds atoms, molecules, and compounds together. The bonds that hold atoms within a molecule, such as covalent, ionic, and metallic bonding, are referred to as intramolecular forces. The greater the forces acting on the surface particles, the greater the surface tension. As a result, the magnitude of the intermolecular forces influences this property.
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the pressure 10.0 m10.0 m under water is 199 kpa.199 kpa. what is this pressure in atmospheres (atm)?
The pressure 10.0m under water is 199kpa. This pressure in atm is 1.96atm.
It's important to keep in mind that an atmosphere is the average pressure that the atmosphere exerts at sea level.
You are aware that the definition of pressure is "force per unit of surface." 1 pascal, or 1Pa, of pressure results from exerting a force of 1N on a surface measuring one square meter. 1 kilopascal, or kPa, is equal to precisely 1000 Pa. You require precisely 101.325 kPa to obtain a pressure of 1 atmosphere, or 1 atm. This indicates that you will experience pressure that is similar to:
199kPa x 1atm / 101.325 kPa = 1.96atm.
Hence the required pressure at 10m underwater is 1.96atm.
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How many grams of solute would you use to prepare 500mL of 0.25 M magnesium hydroxide solution? with working please, thanks.
The amount of solute that would be needed to prepare 500 mL of 0.25 M magnesium hydroxide solution will be 7.29 grams.
Stoichiometric problemRecall that: molarity = number of moles of solute/volume of solution
Given a 500 mL solution of magnesium hydroxide with 0.25 M, the number of moles of solute present in the solution can be obtained by:
number of moles = molarity x volume
= 0.25 x 500/1000
= 0.125 mol
Also recall that: number of moles = mass/molar mass. Thus:
mass = number of moles x molar mass.
The molar mass of magnesium hydroxide is 58.32 g/mol.
Thus, mass of 0.125 mol magnesium hydroxide = 0.125 x 58.32
= 7.29 grams.
In other words, 7.29 grams of solute would be used to prepare 500 mL of 0.25 M magnesium hydroxide solution.
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would you expect mno4-(aq) to react with nai in acidic or in basic solution?
A basic solution would cause MnO4-(aq) and NaI to react. NaI and MnO4-(aq) will not combine in an acidic solution.
An acidic solution is what?An acidic solution is one that has more positively charged hydrogen ions (H) than negatively charged hydroxide ions (OH). Acids come in many forms, two of which are vinegar as well as lemon juice. An acid has fewer OH electrons than a base. Common examples are baking powder and household ammonia.
What are the top three acidic solution types?That honor goes to fluoroantimonic chemical, a superacid mixture of hydrogen chloride containing antimony pentafluoride. Lemon zest, acidity, 0.1 M HCl, and any amount of an acid in water are examples of acidic solutions.
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consider a mixture of air and gasoline vapor in a cylinder with a piston. the original volume is 40.0 cm3. if the combustion of this mixture released 950.0j of energy, to what volume will the gases expand against a constant pressure of 650.0 torr if all of the energy of combustion is converted into work to push back the piston?
The volume of the gases after combustion would be determined by the Ideal Gas Law (PV = nRT).
W = -P(ΔV) = -650.0 torr * (Vf - Vi) = -950.0 J
where Vf is considered to be the final volume and Vi to be the initial volume.
So, Vf - Vi = -950.0 J / -650.0 torr = 1.4615 cm3
Therefore, the final volume of the gases would be
Vf = Vi + ΔV = 40.0 cm3 + 1.4615 cm3 = 41.4615 cm3
What does the Ideal Gas Law states?The ideal gas law states that the product of the pressure and the volume of one gram molecule of an ideal gas is equivalent to the product of the absolute temperature of gas and the universal gas constant.
What is the difference between ideal gas and real gas?Ideal gas is a theoretical gas which obeys the Ideal Gas Law at all conditions of temperature and pressure. Those gases which exist in the environment are Real Gases. Only under the situations of high temperature and low pressure, real gases follow Ideal Gas Law. Therefore, it proves that ideal gas is not a real gas.
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Select reagents from the table to show how you would carry out this synthesis. Reagents Available a. Br2, CH2CI2 b. NaNH2, NH3 c. CH3CH2Br d. H2O, H2SO4, HgSO4 e. H2, Lindlar catalyst f. Li, nh3(liq) g. CH2I2, Zn(Cu) h. H2, Pd/C i. BH3 then H2O2 j. HCL, ether
CH2I2, Zn (Cu) and other ingredients from the table are what we would use to carry out this synthesis or reagent.
What kind of reagent is an illustration?
Reagents include the Grignard reagent, Tollens reagent, Fehling reagent, Millon reagent, Collins reagent, & Fenton reagent. However, not that all reagents have the word "reagent" in their names. Solvents, enzymes, as well as catalysts are some examples of reagents. Reagents could also be restrictive.
Reagent implies what?
A chemical used to conduct a laboratory test, pronounced (ree-AY-jent). In a chemical reaction, reagents can be used to make, measure, or detect other compounds.
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CH2I2, Zn (Cu) and other ingredients from the table are what we would use to carry out this synthesis or reagent.
What kind of reagent is an illustration?
Reagents include the Grignard reagent, Tollens reagent, Fehling reagent, Millon reagent, Collins reagent, & Fenton reagent. However, not that all reagents have the word "reagent" in their names. Solvents, enzymes, as well as catalysts are some examples of reagents. Reagents could also be restrictive.
Reagent implies what?
A chemical used to conduct a laboratory test, pronounced (ree-AY-jent). In a chemical reaction, reagents can be used to make, measure, or detect other compounds.
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For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. State whether or not the reaction is spontaneous. If the reaction is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 ∘C?Part A2CH4(g)→C2H6(g)+H2(g)Express your answer to one decimal place.Part BCalculate ΔS∘rxn at 25 ∘C.Express your answer to one decimal place.Part C2NH3(g)→N2H4(g)+H2(g)Express your answer to one decimal place.Part DCalculate ΔS∘rxn at 25 ∘C.Express your answer to one decimal place.Part EN2(g)+O2(g)→2NO(g)Express your answer using three significant figures.Part F Calculate ΔS∘rxn at 25 ∘C.Express your answer to one decimal place.ΔS∘rxn = J/KPart G2KClO3(s)→2KCl(s)+3O2(g)Express your answer to one decimal place.Part HCalculate ΔG∘rxn at 25 ∘C.Express your answer to one decimal place.
Part A: ΔH∘rxn = −84.2 kJ/mol, ΔS∘rxn = −127 J/Kmol, ΔG∘rxn = −92.4 kJ/mol. The reaction is spontaneous.
What is spontaneous?A spontaneous process in thermodynamics is one that occurs with none external input from outside the system. A more technical definition seems to be the time-evolution of such a system in which free energy is released and the system moves to a lower, extra thermodynamically constant energy state. The sign convention for free energy change is based on the typical general assembly for thermodynamic measurements, in which the release of exciton from the system corresponds to the a negative change in the system's free energy and a positive change with in free energy of the surroundings.
Part B: ΔS∘rxn = −159.2 J/Kmol
Part C: ΔH∘rxn = −9.7 kJ/mol, ΔS∘rxn = −166.3 J/Kmol, ΔG∘rxn = −19.2 kJ/mol. The reaction is spontaneous.
Part D: ΔS∘rxn = 191.7 J/Kmol
Part E: ΔH∘rxn = 180.5 kJ/mol, ΔS∘rxn = 162.6 J/Kmol, ΔG∘rxn = 17.9 kJ/mol. The reaction is not spontaneous. Raising the temperature would make it spontaneous.
Part F: ΔS∘rxn = 205.3 J/Kmol
Part G: ΔH∘rxn = −133.7 kJ/mol, ΔS∘rxn = −203.4 J/Kmol, ΔG∘rxn = −321.7 kJ/mol. The reaction is spontaneous.
Part H: ΔG∘rxn = −321.7 kJ/mol. The reaction is spontaneous.
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predict the organic product formed when bzcl reacts with cyclohexanol. bzcl = benzoyl chloride.
The organic product formed when benzoyl chloride reacts with cyclohexanol is Isopropyl cyclohexyl benzoat
The reaction between benzoyl chloride and cyclohexanol is esterification reaction. Benzoyl chloride on reaction with alcohols give corresponding ester. In this case the ester formed is as follow,
First, benzoyl chloride protonate then cyclohexanol attacks positively charged carbon at the alpha position via a nucleophilic reaction. Alcohol oxygen is produced via a proton transfer from an acid oxygen attack's free electron. The discharge of a water molecule A H⁺ is released and the double bond between the acid alpha carbon and oxygen is restored. An Cyclohexyl benzoat is produced.
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If we react 10 moles of hydrogen with 6 moles of oxygen. what is the limiting reagent and how much water is produced?
The limiting reagent in this reaction is hydrogen because it is the reactant that is used up first.
The balanced equation for the reaction between hydrogen and oxygen to form water is:
2H2 + O2 -> 2H2O
To react 10 moles of hydrogen with 6 moles of oxygen, we will also need 6 moles of oxygen.
Since we have enough hydrogen and oxygen to react completely, we can calculate the number of moles of water produced.
10 moles of H2 will react to produce 10 moles of H2O and 6 moles of O2 will react to produce 3 moles of H2O. Therefore, the total amount of water produced is 10 + 3 = 13 moles of water.
For the following electrochemical cell Co(s)|Co2+ (aq, 0.0155 M)||Ag+ (aq, 1.50 M)|Ag(s)
write the net cell equation. Phases are optional. Do not include the concentrations.
The net cell equation for the electrochemical cell Co(s)|Co2+ (aq)||Ag+ (aq)|Ag(s) is: Co(s) + 2Ag+(aq) → Co2+(aq) + 2Ag(s)
The electrochemical cell of Cobalt (Co) consists of two electrodes, one of Cobalt (Co) and the other of Silver (Ag).
The net cell equation for this cell is Co(s) + 2Ag+(aq) → Co2+(aq) + 2Ag(s), indicating that when two moles of Silver ions (Ag+) are combined with one mole of Cobalt (Co), two moles of Cobalt ions (Co2+) and two moles of Silver (Ag) are produced.
This cell reaction is an example of redox (oxidation-reduction) reaction, in which there is a transfer of electrons between the two electrodes.
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