There are significantly more thunderstorms in Florida than in California D: "The ocean currents near Florida are warmer than the ocean currents near California".
The primary reason why there are significantly more thunderstorms in Florida than in California is because of the difference in ocean currents. The ocean currents near Florida, specifically the Gulf Stream, are much warmer than the currents near California. This leads to a more unstable atmosphere, which creates the ideal conditions for thunderstorm formation. In addition, the warm and moist air that moves inland from the Atlantic and the Gulf of Mexico also contributes to the formation of thunderstorms in Florida.
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Based on your knowledge of intra- and intermolecular forces, choose the answer with the compounds listed in order of increasing boiling point.
The strongest types of bonds are ionic bonds, covalent bonds, hydrogen bonds, and van der waals forces.
What is meant by intermolecular forces?The Coulomb or electrostatic force is the strongest intermolecular force and is also the cause of the ionic bonding of salts like NaCl. Although that oversimplifies what actually happens between atoms, it is true that the electrostatic force is attracting for atoms with opposite charges. The attracting and repellent forces that develop between the molecules of a substance are known as intermolecular forces, or IMF for short.These forces operate as an intermediary between the individual molecules of a substance.Intermolecular forces are responsible for the majority of the physical and chemical characteristics of matter.Intermolecular forces are those that operate between molecules. On the other hand, intramolecular forces work only within molecules.To learn more about intermolecular forces, refer to:
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What is the number of moles in 3.2 x 10^24 atoms of nitrogen?
A. 1.9 moles
B. 5.3 moles
C. 9.5 moles
D. 19.2 moles
To convert from molecules/atoms to moles, divide by Avogadro's Number:
[tex]6.02*10^{23}[/tex]
Solving the QuestionWe're given:
[tex]3.2*10^{24}[/tex] atomsDivide by Avogadro's Number:
[tex]\dfrac{3.2*10^{24}}{6.02*10^{23}}[/tex]
[tex]= 5.3[/tex]
AnswerB. 5.3 moles
a chemical equation is a statement using chemical ____ that expresses both the identities and the relative ____ of the reactants and products involved in a chemical or physical change.A. QuantityB. Formulas
threonine is a standard amino acid with a polar side chain. Identify the chiral centers in threonine. How many optical isomers does threonine have?
D-, L-, and D-allo-threonine isomers of threonine have no nutritional or other advantages. More often than natural proteins, Thr is utilised to synthesise Thr.
What are the chiral centers of threonine?Chiral centres are those to which four distinct atom groups are bound. Carbon a cannot be a chiral carbon since it has three hydrogen atoms connected to it. Since it is doubly linked to oxygen, it is not the carboxyl carbon either. Furthermore, because it is bound to three rather than four separate groups of atoms, the amino nitrogen is ineligible in any case.
Due to the two chiral centres in threonine, there are four potential stereoisomers. Other than being rare in nature, the isomers of threonine (D-, L-, and D-allo-threonine) have no nutritional or other benefit. Nowadays, synthetic Thr is used more frequently than natural proteins to make Thr.
The chiral centres of amino acids can be one or many. Except for glycine, the a-carbon is chiral in all amino acids. There are extra chiral centres in some amino acids. Because there are four distinct groups connected to the carbon atom, these are chiral centres.
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Iron (Fe) does NOT fit in the pattern in column 7.
Give a reason why.
Iron (Fe) does NOT fit in the pattern in column 7 because Iron is a metal.
What are the characteristics of Iron (Fe)?
1. Iron (Fe) is a silvery-gray metal that is very malleable and ductile.
2. It has a melting point of 1538 °C (2798 °F) and a boiling point of 2862 °C (5164 °F).
3. It is the most abundant element in the Earth's crust, making up about 5.6% of its mass.
4. It is magnetic, and it is an important component of steel and other alloys.
5. Iron is also an essential element for biological processes, and it is necessary for the formation of hemoglobin in red blood cells.
Iron is not an element in column 7 of the periodic table because it is a transition metal, which is found in columns 3-12. Column 7 contains the halogens (Group 17), which are non-metallic elements. Allow (iron) had different properties (to oxygen and sulfur) and it ignore electrons.
Therefore, Iron is a metal is the answer.
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What is kinetic-molecular theory in solids?
The kinetic-molecular theory is a model that describes the behavior of matter at a microscopic level.
In solids, this theory suggests that the particles (atoms or molecules) that make up the solid are in constant motion and are held together by strong intermolecular forces. The particles vibrate about their fixed positions and the amplitude of the vibration increases as the temperature increases. This theory also explains properties such as thermal expansion, specific heat, and thermal conductivity of solids.
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The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2. 5.
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5 is (5^(γ-1))^(1/γ)
An adiabatic process is one in which there is no heat transfer to or from the system, so the change in internal energy of the system is due to the work done by the gas.
PV^γ = constant,
where P is the pressure, V is the volume, and γ (gamma) is the adiabatic index, which is equal to the ratio of specific heats for the gas (Cp/Cv). For a monatomic gas (such as helium), γ = 5/3, and for a diatomic gas (such as nitrogen), γ = 7/5.
If the volume of the gas is halved and the pressure is increased by a factor of 2.5 during an adiabatic compression, the new pressure and volume can be related as follows:
P2V2^γ = P1V1^γ
P2 = 2.5P1
V2 = V1/2
Substituting the new pressure and volume into the equation of state:
(2.5P1)(V1/2)^γ = P1V1^γ
Expanding and solving for the change in temperature:
2.5(V1/2)^γ = V1^γ
5^(1/γ)(V1/2) = V1
(V1/2)^(1-1/γ) = 5^(1/γ)
T2/T1 = (V1/2)^(γ-1)
=> (5^(1/γ))^(γ-1)
=> (5^(γ-1))^(1/γ)
The exponentiation of 5 raised to the power of (γ-1) gives the factor by which the temperature changes during the adiabatic compression. The exact temperature change will depend on the specific gas and its adiabatic index.
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What are the exceptions of the octet rule?
There are three prevailing exceptions to the octet rule: Molecules, such as NO, with an odd number of electrons; Molecules in which one or more atoms possess additionally than eight electrons, such as SF6.
Molecules such as BCl3, in which one or additional atoms possess less than eight electrons. General exceptions to the octet rule incorporate molecules that have an odd number of electrons and molecules in which one or more atoms possess more or fewer than eight electrons. Molecules with an odd number of electrons are somewhat rare in the s and p blocks but instead familiar among the d- and f- block elements. Compounds with more than an octet of electrons around an atom are named expanded-valence molecules.
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Which statement is true of the role of water in the coffee cup calorimeter you used in the laboratory?
O The water transmits the heat to the thermometer.
O The water is not insulated.
O The water provides an isolated environment.
O The water cools the thermometer.
Gases are most ideal at high temperature and low pressure. (T/F)
Answer:
true
Explanation:
what will happen if one tries to form a solution where the enthalpy of solvation is positive and very large and the entropy of solvation is positive, but small?
If the enthalpy of solvation is high and positive, it means that the solute wants to dissolve in the solvent. But if the entropy of solvation is only slightly positive, it means that the solute may not dissolve completely.
What does enthalpy of solvation mean?Enthalpy of solvation, also known as enthalpy of dissolution, refers to the change in enthalpy that occurs when a solute dissolves in a solvent to form a solution. Enthalpy is a measure of the total energy of a system, including both thermal and potential energies.
In the case of solvation, the enthalpy of solvation is the change in enthalpy that results from the interactions between the solute and solvent particles as the solute dissolves in the solvent. If the enthalpy of solvation is positive, it means that the solute-solvent interactions are exothermic, releasing energy and making the solution energetically favourable. If the enthalpy of solvation is negative, it means that the solute-solvent interactions are endothermic, absorbing energy and making the solution energetically unfavourable.
In context to the above:Enthalpy of Solvation is positive and very large: it means that the solute molecules are highly energetically favoured to be dissolved in the solvent. In other words, the solute-solvent interactions are very strong, making it energetically favourable for the solute to dissolve in the solvent.Entropy of Solvation is positive, but small: it means that the degree of disorder or randomness in the system is only slightly increased by the dissolution of the solute in the solvent. So while the solute is energetically favoured to dissolve, the increase in disorder is not as significant.In this case, the overall Gibbs free energy change of the solution would be dominated by the large positive enthalpy of solvation, making the solution energetically favourable. The solution would be thermodynamically stable and would tend to form spontaneously. However, the small positive entropy of solvation suggests that the solute may not dissolve completely, as the entropy increase is not very significant.
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T/F? At the same temperature and pressure, equal volume of gases contains the same number of molecules.
At the same temperature and pressure, equal volume of gases contains the same number of molecules is a true statement.
This statement is known as Avogadro's Law, which states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules (or moles) regardless of their chemical nature or physical properties.
This means that if we compare two different gases occupying the same volume at the same temperature and pressure, they will contain the same number of molecules.
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Draw hydrogen cyanide lewis structure
The hydrogen cyanide (HCN) lewis structure has a triple bond between the carbon (C) and nitrogen (N) atoms, with the hydrogen (H) attached to the carbon.║
Hydrogen cyanide is a polar molecule due to the unequal sharing of electrons between the C and N atoms. The C atom pulls the electrons more strongly, giving it a slight negative charge, while the H atom has a slight positive charge.
This polarity allows hydrogen cyanide to form hydrogen bonds with other polar molecules, making it a useful solvent and a building block for organic chemistry. However, hydrogen cyanide is also a highly toxic gas and can cause severe health effects if inhaled or ingested.
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how many molecules of water are needed to completely hydrolyze a polymer that is ten monomers long?
The number of the molecules of water are needed to completely hydrolyze the polymer that is ten monomers long is the 9 molecules of water.
A polymer can be defined as the macromolecule which is essentially is the combination of the many subunits. The Polymers will be break down into the monomers is called as the hydrolysis of the polymer, which is the reaction in which the water molecule will be utilize during the breakdown.
One water molecule is use to break the each bond present between the two adjacent monomers in the polymer during the hydrolysis. The ten-monomer of the long polymer that comprises the nine bonds because the two adjacent monomers are joined through the bond. Therefore, the nine water molecules are required to hydrolyze the ten monomers long polymer.
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The percent by mass of ethanol (mm = 46. 07 g/mol) in an aqueous solution is 16. 9%. What is the molality of the ethanol solution?.
The molality of the ethanol solution is 0.859 moles per kilogram of water.
To calculate the molality, divide the mass of the solute (ethanol) by the mass of the solvent (water) and multiply by the appropriate conversion factor to express the result in moles per kilogram. To calculate the molality, we first need to determine the mass of ethanol in the solution. We know that the solution is 16.9% ethanol by mass, so we can calculate the mass of ethanol in the solution as follows:
0.169 x total mass of solution = mass of ethanol.
To convert this mass of ethanol to moles, we divide by the molar mass of ethanol (46.07 g/mol), and then divide the number of moles by the mass of the solvent (water) to get the molality. Finally, we must convert the answer to the correct units (moles per kilogram) to express the molality of the solution.
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What is the name of FeSO4?
The name of FeSO₄ is Ferrous Sulfate
Green vitriol is the common name for the iron salt ferrous sulfate. Injectable iron includes iron dextran and inferno. Oral iron is known by the generic names ferrous fumarate, ferrous gluconate, and ferrous sulfate. The best and least expensive form of iron supplementation is ferrous sulfate.
It is created when iron filings are added to a solution of copper sulfate; because iron is more reactive than copper, it pushes the copper out of the way and forms iron sulfate in its place.
FeSO₄ =Ferrous Sulfate
Density =2.84 g/cm³
Molecular Weight/ Molar Mass = 151.908 g/mol
Boiling Point >300 °C
Melting Point 56-64 °C
Chemical Formula FeSO₄
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A compound has a molar mass of 123.22 g/mol. What is the molecular formula of a substance that has this molar mass? A Co₂H4. B PSF. C SrS 3 . D ZrO₂.
A compound which has molar mass 123.22g/mol will have a molecular formula as ZrO₂. so the correct option is D..
To determine the molecular formula of a substance with a given molar mass, we need to know the empirical formula of the compound and the number of empirical formula units in the molecular formula.
Let's calculate the empirical formula weight for each of the options:
A) Co₂H₄:
Co: 2 x 58.93 = 117.86
H: 4 x 1.01 = 4.04
Total: 121.9 g/mol
B) PSF:
P: 1 x 30.97 = 30.97
S: 1 x 32.06 = 32.06
F: 1 x 18.99 = 18.99
Total: 82.02 g/mol
C) SrS₃:
Sr: 1 x 87.62 = 87.62
S: 3 x 32.06 = 96.18
Total: 183.8 g/mol
D) ZrO₂:
Zr: 1 x 91.22 = 91.22
O: 2 x 16.00 = 32.00
Total: 123.22 g/mol
Now we can divide the given molar mass by the empirical formula weight to find the number of empirical formula units in the molecular formula:
A) Co₂H₄: 123.22 / 121.9 = 1.01, so the molecular formula is approximately the same as the empirical formula, Co₂H₄.
B) PSF: 123.22 / 82.02 = 1.50, so the molecular formula is 1.5 times the empirical formula, which we can round to PS₃F₃.
C) SrS₃: 123.22 / 183.8 = 0.67, so the molecular formula is 0.67 times the empirical formula, which we can round to SrS₂.
D) ZrO₂: The molar mass is already equal to the empirical formula weight, so the molecular formula is the same as the empirical formula, ZrO₂.
Therefore, the molecular formula for the compound with a molar mass of 123.22 g/mol is D) ZrO₂.
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what is function of gap junctions?
The function of the gap junction is that it allow the direct diffusion of the ions and the small molecules in between the adjacent cells.
The Gap junctions are the clusters of the intercellular channels that will allow the direct diffusion of the ions and the small molecules in between the adjacent cells. The Gap junctions will allow the exchange of the ions, the second messengers, and the small metabolites in between adjacent the cells and are formed by the two unrelated protein of the families, the pannexins and the connexins.
The gap junction is that allows the direct chemical communication in the between adjacent in the cytoplasm.
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How many molecules of NO2 are present in a 48.6g sample?
Answer:
7.72 moles
Explanation:
Answer:
344.312
or 334³⁹\¹²³
Explanation:
hope it helps
A NaCl solution is prepared by dissolving 50.0 g NaCl in 200.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25°C is 0.031 atm? 0.00115 atm 0.00207 atm O 0.0269 atm O 0.0288 atm 0.00222 atm
The solution to this question is option d. We can calculate it in this manner:
By using Raoult's Law:
Pi= Pi* Xi
Moles H20= (200g of H2O x 1 mol)/ 18.02 g of H20
=11.0987 mol H2O
Moles of NaCl= (50g of NaCl x 1 mol)/ 58.4427 mol NaCl
Now to calculate vapor pressure,
Mole fraction of H20= (Moles of H20)/ (Moles H20 + Moles of NaCl)
= 11.0987/ 11.95414
=0.92844
Partial pressure of solution is,
Pi= 0.92844 x 0.031
=0.2878 atm
Therefore vapor pressure of the solution is 0.2878 atm
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How many grams of NaCl are in 14.3 L of a 2.38 M solution of NaCl?
2.8 grams of NaCl are in 14.3 L of a 2.38 M solution of NaCl." The molarity is defined as the number of moles of solute present in 1 liter of solution.
What do you mean by molarity ?The term molarity is defined as the number of moles of solute present in 1 liter of solution.Molarity is also known as the molar concentration of a solution.
Given:
Volume of solution = 14300 mL
Molarity of sodium chloride = 2.38 M
Molar mass of sodium chloride (NaCl) = 59 g/mole
2.38 = mass of NaCl × 1000 / 59g × 14300
mass of NaCl = 2.38 × 59g × 14300 / 1000
= 2.8 grams
Thus, 2.8 grams of NaCl are in 14.3 L of a 2.38 M solution of NaCl.
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What is the molar mass of NaCl 2?
NaCl2 is not a valid compound because sodium chloride (NaCl) exists as discrete Na+ and Cl- ions, and not as a molecule that contains two chloride ions.
1) Sodium chloride(Na2Cl2)
2) Molecular Formula Cl2Na2
3) Molecular Weight 116.88
If you meant Na2Cl2, which is disodium dichloride, the molar mass can be calculated by adding the atomic masses of two sodium atoms and two chlorine atoms:
Na2Cl2:
1) Two sodium (Na) atoms have a total atomic mass of 2 × 22.99 g/mol = 45.98 g/mol.
2) Two chlorine (Cl) atoms have a total atomic mass of 2 × 35.45 g/mol = 70.90 g/mol.
So, the molar mass of Na2Cl2 is:
45.98 g/mol (Na) + 70.90 g/mol (Cl) = 116.88 g/mol
The molar mass of Na2Cl2 is 116.88 g/mol.
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during respiration, does glucose become more oxidized or more reduced?
During respiration, glucose becomes more oxidized.
What is oxidation?
This is because glucose is broken down into smaller molecules, and in the process, electrons are removed from glucose and transferred to other molecules such as oxygen, resulting in the formation of carbon dioxide and water.
Oxidation is defined as the loss of electrons, and reduction is defined as the gain of electrons. Therefore, when glucose loses electrons during respiration, it is undergoing oxidation, and when other molecules such as oxygen gain electrons, they are undergoing reduction. The overall process of respiration is therefore an oxidation-reduction reaction, where glucose serves as the reducing agent and oxygen serves as the oxidizing agent.
Hence, During respiration, glucose becomes more oxidized.
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How many moles of calcium hydroxide, Ca(OH)2, are needed to completely react with 18. 7 moles of hydrofluoric acid, HF?
The moles that are needed to completely react with 18. 7 moles of hydrofluoric acid are 9.35 moles.
Balanced chemical equationTo determine the number of moles of calcium hydroxide needed to completely react with 18.7 moles of hydrofluoric acid, we need to first write a balanced chemical equation for the reaction. The balanced equation is:
Ca(OH)₂ + 2HF → CaF₂ + 2H₂O
From the balanced equation, we can see that 1 mole of calcium hydroxide reacts with 2 moles of hydrofluoric acid.
Stoichiometric calculationThe number of moles of calcium hydroxide needed to react with 18.7 moles of hydrofluoric acid can be calculated as follows:
moles of calcium hydroxide = (moles of hydrofluoric acid) / 2
moles of calcium hydroxide= 18.7 / 2= 9.35 moles
So, 9.35 moles of calcium hydroxide are needed to completely react with 18.7 moles of hydrofluoric acid.
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The equilibrium constant Kc for the reaction
H2(g) + Br2(g) ⇆ 2HBr(g)
is 2.180 × 106 at 730°C. Starting with 5.20 moles of HBr in a 18.7−L reaction vessel, calculate the concentrations of H2, Br2, and HBr at equilibrium.
[H2] = ___M
[Br2]= ___ M
[HBr]= ___M
PLEASE I NEED ANSWER ASAP!
The equilibrium concentrations are approximately:
[H2] = 0 M
[Br2] = 0 M
[HBr] = 0.668 M.
What is equilibrium constant?At equilibrium, the equilibrium constant, K, indicates the connection between the reactants and products of a reaction. When the rates of forwarding and backward reactions are equal, a reaction has reached equilibrium.
The equilibrium constant expression for the reaction is:
Kc = [HBr]^2 / ([H2] * [Br2])
We are given that Kc = 2.180 × 10^6 at 730°C. We can use this information to set up an ICE (initial, change, equilibrium) table and solve for the equilibrium concentrations of the three species.
Initial concentrations:
[HBr] = 5.20 mol / 18.7 L = 0.278 M (since 2HBr are formed from 1 mol Br2 and 1 mol H2, initial [Br2] and [H2] are both 0)
Change in concentrations:
Let x be the change in concentration of HBr. Then, the change in concentration of H2 and Br2 will be -2x and -x, respectively.
Equilibrium concentrations:
[H2] = 0 - 2x
[Br2] = 0 - x
[HBr] = 0.278 + x
Substituting these concentrations into the equilibrium constant expression and solving for x gives:
Kc = [HBr]^2 / ([H2] * [Br2])
2.180 × 10^6 = (0.278 + x)^2 / (2x * x)
Solving for x using this equation gives:
x = 0.390 M
Therefore, the equilibrium concentrations are:
[H2] = 0 - 2x = -0.780 M (Note: negative concentration is unphysical, but indicates that all H2 reacted)
[Br2] = 0 - x = -0.390 M (Note: negative concentration is unphysical, but indicates that all Br2 reacted)
[HBr] = 0.278 + x = 0.668 M
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How many grams of NaCl are produced from 452.5 grams of NaOH?
Answer:
659.95 grams of NaCl are produced from 452.5 grams of NaOH when the reaction is complete.
Explanation:
To answer this question, we first need to calculate the number of moles of NaOH present in 452.5 grams of NaOH. We can use the molar mass of NaOH, which is 40.00 g/mol, to do this:
Moles of NaOH = Mass of NaOH / Molar mass of NaOH
Moles of NaOH = 452.5 g / 40.00 g/mol
Moles of NaOH = 11.31 mol
Now we can use the balanced chemical equation to determine the number of moles of NaCl produced when 11.31 moles of NaOH react:
NaOH + BaCl2 → NaCl + Ba(OH)2
According to the equation, 1 mole of NaOH produces 1 mole of NaCl. Therefore, 11.31 moles of NaOH will produce 11.31 moles of NaCl.
Finally, we can convert the number of moles of NaCl to grams using the molar mass of NaCl, which is 58.44 g/mol:
Mass of NaCl = Moles of NaCl x Molar mass of NaCl
Mass of NaCl = 11.31 mol x 58.44 g/mol
Mass of NaCl = 659.95 g
How many different codons (triplets) code for the amino acid Proline (Pro)?A. 1B. 2C. 3D. 4
The number of the different codons (triplets) code for the amino acid Proline (Pro) is the correct option is D. 4.
A codon is the sequence of the three consecutive nucleotides that present in the mRNA that is the messenger ribonucleic acid strand. The four nucleotides in the mRNA, are as : A U G C in which the A represents the adenine, the U represents uracil, the G represents guanine, and the C represents cytosine. The most of the amino acids is encoded with the multiple of the codons.
Thus, the amino acid proline (Pro) is encoded by the four codons, named as the CCU, CCG, CCC, and CCA.
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Calculate the volume of acetylene produced at 26 degrees Celsius and 0.9 atm from 0.05 CaC2 and excess H2O.
According to the ideal gas equation, the volume of acetylene produced at 26 degrees Celsius and 0.9 atm from 0.05 CaC₂ and excess H₂O is 138.10 liters.
What is ideal gas equation?The ideal gas equation is an equation which is applicable in a hypothetical state of an ideal gas.It is a combination of various laws such as Boyle's law, Charle's law,Avogadro's law and Gay-Lussac's law . It is given as, PV=nRT where R= gas constant whose value is 8.314.The law has several limitations.
On substitution of values, V= 0.05×8.314×299/0.9= 138.10 liters.
Thus, the volume of acetylene produced at 26 degrees Celsius and 0.9 atm from 0.05 CaC₂ and excess H₂O is 138.10 liters.
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e. Which alcohol above produces the most carbon dioxide per mole burned? (1 point)
The alcohol mentioned above generates carbon dioxide in Methanol per mole burnt.
Methanol is a substance with the chemical formula CH3OH. The simplest alcohol, it is a colorless, flammable, light, volatile liquid with a distinct odor that is gentle and sweeter than ethanol.
It functions as an antifreeze, fuel, and solvent for ethyl alcohol while a polar liquid at room temperature. With the help of oxygen and sunlight, methanol is converted into carbon dioxide and water.
Burning methanol in the air produces carbon dioxide and water:
2CH3OH + 3O2 - 2CO2 + 4H20
A methanol flame appears to be practically colorless. To prevent colorlessness on the nearly undetectable fire when burning methanol, precautions should be taken.
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What color absorbed by a solution should appear as the given color orange?
Blue is the color absorbed by a solution that should appear as the given color orange. If the material absorbs blue you will glimpse the color orange.
When sunlight shines through an orange solution, the violet, blue and green wavelengths are immersed. The different colors enact through. The transmitted light is the light we see, and it glances orange. Colored liquids or solutions glance colored because they absorb some of the light shined on them. Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The various wavelengths within the visible part are reliable for the different colors we see.
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