To calculate the percent yield, we need to divide the actual yield (the amount of product produced) by the theoretical yield (the amount of product that should be produced based on the stoichiometry of the reaction) and multiply by 100.
Actual yield = 280 kg acetaminophen
Theoretical yield = 280 kg acetaminophen + 70 kg waste
percent yield = (actual yield / theoretical yield) x 100
percent yield = (280 / (280 + 70)) x 100 = 280/350 x 100 = 80%.
So the percent yield is 80%. This means that 80% of the theoretical yield was actually produced, and 20% of the theoretical yield was lost as waste.
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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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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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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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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rank the following molecules by their increasing vapor pressure. molecule a: a small, nonpolar hydrocarbon molecule b: a small, polar molecule with an h-n bond molecule c: a salt molecule d: a small, polar molecule 1
C < B < D < A, For the weakest IMFs, the vapor pressure will be at its maximum. Small, nonpolar hydrocarbon molecule A = forces of dispersion, Molecule B is a tiny, polar molecule containing hydrogen bonds between its hydrogen atoms. ion-ion = a salt in molecule C. Small, polar molecule Molecule D: dipole-dipole
Why is vapor pressure significant and what does it mean?The pressure at which a liquid and its vapour are in equilibrium at a particular temperature is known as the vapour pressure. It is believed that the vapour is "pushing" against the atmosphere.
What succinct sentences best explain vapor pressure?Vapor pressure is the force that a gas in thermal equilibrium with a solid or liquid in a closed container produces.
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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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find the formula of an oxide of carbon in which the ratio by mass of oxygen to carbon is 2.00:1.00.
Since there are three oxygen atoms and a total of 16 times as much carbon as there are carbon atoms, the formula 03C2 will result in a gigantic oxygen to carbon ratio of 2 to 1.
Describe carbon.Carbon is an element with symbol 'C' and atomic number 6 (from the Latin carbo, meaning "coal"). It has a tetravalent atom, which means that four of its electrons can be used to create covalent chemical bonds. It is nonmetallic. The periodic table's group 14 includes it. The crust of the Earth contains 0.025 percent carbon.
Why does carbon matter so much?Without carbon, life on the planet would not be conceivable. This is partly because carbon can easily make bonds to other atoms, allowing biomolecules like RNA and DNA which are crucial for the development and replication that characterizes life, to take on a variety of shapes and functions.
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After a candle is blown out, the wax of the candle decreases in temperature. What happens to the molecules of the wax when the temperature of the wax decreases?
Answer:The energy of the molecules of the wax decreases.
Explanation:
C25H52 + 38 O2 → 25 CO2 + 26 H2O
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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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.
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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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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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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determine the ph of a 0.188 m nh3 solution at 25°c. the kb of nh3 is 1.76 × 10-5.
Answer A. 5.480 B. 2.740 C. 8.520 D. 11.260 E. 12.656
pH is 11.26 of a 0.188 m NH₃ solution at 25°c and the kb of nh3 is 1.76 × 10⁻⁵.
When NH₃ is dissolved in water, it will dissociates partially producing NH⁴⁺ ions and OH⁻ ions. Equation will be:
NH₃ + H₂O → NH₄⁺ + OH⁻
We using the Kb expression to determine the [OH-] concentration,
Kb = [NH⁴⁺] [OH⁻] /* [NH₃]
We can write NH₄⁺ as OH⁻ since they are in equal ratio.
(1.76*10^-5) = [OH-]² / 0.188
[OH-]² = 3.3088*10^-6
[OH-] = 1.819*10^-3
Therefore, we calculate for H+ concentration as follows:
[H⁺] [OH⁻] = 10^-14
[H⁺] = 10^-14 / [OH-]
[H⁺] = 10^-14 / (1.819*10^-3)
[H⁺] = 5.50*10^-12
pH = -log [H⁺]
pH = -log (5.5*10^-12)
pH = 11.26
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CH4 + 202 -> CO2 + 2H20 What mass of oxygen would be needed to form 10 grams of carbon dioxide?
Carbon dioxide has a molar mass of 44 g/mol. Therefore, 10 g of carbon dioxide would require 10/44 = 0.227 mol of oxygen. The molar mass of oxygen is 32 g/mol, so 0.227 mol of oxygen would require 0.227 x 32 = 7.264 g of oxygen.
What is the oxygen?
Oxygen is a colorless, odorless, tasteless gas that is essential for human life. It is the most abundant element found in the Earth's atmosphere, making up about 21% of the air we breathe. Oxygen is also found in the ocean, in rocks, and in most living things. After hydrogen and helium, it is the third most prevalent element in the universe. Oxygen is essential for cellular respiration, which is the process by which cells obtain energy from food molecules. Oxygen is also used in many industrial processes, such as metal fabrication, welding, and chemical reactions. Oxygen also plays a vital role in creating Earth's ozone layer, which helps protect us from harmful ultraviolet radiation from the sun.
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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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what mass of sodium benzoate should you add to 150.0 ml of a 0.15 m benzoic acid solution to obtain a buffer with a ph of 4.25?
The mass of sodium benzoate that should you add to 150.0 ml of a 0.15 m benzoic acid solution to obtain a buffer with a ph of 4.25 is 3.72 g.
What is mass?Mass is the quantity of matter of a physical body.
The Pka value = 4.19
so, we are going to use H-H equation:
PH = Pka + ㏒[benzoate/benzoic acid]
when we have PH = 4.25
and Pka = 4.19
By substitution:
4.25 = 4.19 + ㏒[benzaoate/ benzoic acid]
[benzaoate/benzoic acid] = 1.148 M
when the [benzoic acid ] = 0.15 m
[benzaoate] = 1.148M x 0.15m = 0.1722 M
The moles of sodium benzoate = molarity x volume L
0.1722 M x 0.15 L = 0.02583 moles
The mass = moles x molar mass
0.02583 moles x 144 g/mol = 3.72 g
Therefore, the mass of sodium benzoate is 3.72 grams.
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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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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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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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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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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.
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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without making or breaking bonds, the pictured molecule can change its shape because ...
The pictured molecule can change its shape because it is composed of atoms held together by non-covalent interactions, such as hydrogen bonds, van der Waals forces, and ionic interactions.
What is hydrogen bonds?Hydrogen bonds are a type of chemical bond that occurs when a hydrogen atom is covalently bonded to either a highly electronegative atom such as oxygen, nitrogen, or fluorine, or an atom that has an unshared pair of electrons. Hydrogen bonds are weaker than covalent or ionic bonds but much stronger than van der Waals forces.
These types of bonds are relatively weak and can be easily disrupted and reformed, allowing the molecule to bend, twist, and move in various directions. This allows the molecule to change its shape without making or breaking bonds.
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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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what substance is often referred to as mother nature's best cleaning agent and can be heated up and used to wash your knives?
The substance that is often referred to as mother nature's best cleaning agent and can be heated up and used to wash your knives is vinegar.
What is vinegar?Vinegar is a flavoring-free aqueous solution of acetic acid and trace chemicals. Vinegar normally has an acetic acid content of 5-8% by volume.
It can be used to remove stains, cut through filth, and even in the garden. Pouring vinegar down the drain is both safe and useful. It works as a natural cleaning agent, removing obstructions and dangerous germs that create odors.
Therefore, Vinegar is often considered to be nature's best cleaning agent because it can be heated and used to clean your blades.
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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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how long (in minutes) must a 5.40 a current be passed through an aqueous solution of zinc nitrate to deposit 87.5 g zn
Zn=65,4Zn^+2 (n=2) This equation states that it will take 47818 seconds or 797 minutes to deposit 87.5 g of zinc nitrate when a current is run through an aqueous of the metal.
How can I obtain zinc nitrate?Typically, zinc nitrate is made by dissolving zn metal, metal oxides, or other similar compounds in nitric acid as follows: Zn + 2 HNO 3 Zn (NO 3) 3 Zn = 2 Plus H. ZnO Plus 2 HNO (NO 3) 2 plus H 2O. The zinc nitrate hydrates as a result of these processes.
Does zinc vaporize in liquid?5 mg Zn2+/L was cited as the legal maximum by the World Health Organization. What form and how does zinc mix with water This process releases hydrogen, which violently interacts with oxygen.
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consider the atoms in the molecules in model 3 that are bonded to hydrogen. locate those at- oms on the periodic table. based on their location on the periodic table, which atom is the most electronegative?
From the given diagram, the atoms F, Cl, Br and I are bonded to hydrogen in which Fluorine is the most electronegative atom in the periodic table.
All of the elements classified as halogens are found in group 7 of the periodic table. The outer shell of each one of them has 7 valence electrons. Because it has one fewer shell than chlorine, fluorine has a higher electronegativity. The halogen elements have the highest electronegativity of any other group in the periodic table because they only require one electron to occupy their valence orbital. Halogens' electro-negativity is ranked F, Cl, Br, and I in decreasing order. Out of all the elements that are known, fluorine has the highest electronegativity.
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