The N2H2 polarity is non. it is a non - polar compound present in the globe.
A molecule or its chemical groups have an electric dipole moment with a negatively charged end and a positively charged end when they are polarity, which in chemistry is the separation of electric charge. Because the bonded atoms' electronegativity differs, polar compounds must have one or more polar bonds. If the bond dipoles cancel one other out via symmetry, molecules with polar bonds are not polar. Dipole-dipole intermolecular forces and hydrogen bonding are how polar molecules communicate with one another. Many physical characteristics, including as surface tension, solubility, and melting and boiling points, are based on polarity. The force with which an atom pulls an electron is not constant. The electronegativity of an atom refers to the strength of the "pull" it applies to its electrons. Fluorine, oxygen, and nitrogen atoms, as well as those with high electronegativities, pull on electrons more strongly than do alkali metals and alkaline earth metals and atoms with low electronegativities. This causes an unequal distribution of electrons among the atoms in a bond because electrons are attracted to the atom with the higher electronegativity.
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identify the following compound. c5h10o: nmr: δ 9.8 (1h, s), δ 1.1 (9h, s)
The problem is based on NMR spectroscopy, so the structure of the compound is given below:
What is NMR spectroscopy?NMR (nuclear magnetic resonance) spectroscopy is a well-known technique in organic chemistry which is used to determine the structure of the organic compound. It works on the principle in the presence of an external magnetic field some nuclei which have spin are transferred from lower energy level to higher energy.
The double bond equivalence/ degree of unsaturation gives an idea about the number of double bonds or rings present. It can be calculated as:
DBE = C - H/2 - N/2 + 1
Here, C, H and N is number of carbon, hydrogen and nitrogen atom respectively. Determination of the DBE, gives us a preliminary idea about the structure.
By substituting the value of C, H and N as 5,10 and 0 in equation (1), we calculate the Double bond equivalence as:
DBE = 5 - 10/2 - 0/2 +1
DBE = 1
The peak obtained at δ1.1 for 9H indicates the presence of 9 equivalent hydrogen atoms which are saturated. The peak obtained for a single H at
δ9.8 indicates the presence of a C=O bond, and usually is associated with an aldehyde.
The DBE is found to be 1 indicating the presence of a double bond or the presence of a ring.
By analyzing, the given values of the shift, the structure is found to be:
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if deficient, which of the following minerals would have the least affect on bone health?
Calcium plays a crucial role in affecting a bone health, and if chloride is present in deficient amount then it will have least effect on bone health.
Bone fitness as a public fitness trouble with an emphasis on prevention and early intervention to sell robust bones and save you fractures and their consequences. Vitamin D facilitates the frame take in and system calcium. Together, those vitamins are the cornerstone of healthful bones. Poor diet, low in nutrients and calcium. Changes in hormones (from smoking or menopause) Age. Medical situations like rheumatoid arthritis, persistent kidney disease, overactive parathyroid gland or celiac sprue.
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which of the following is true about the total entropy of the universe? a) it is always increasing b) it is always decreasing c) it remains constant at a given t d) it always remains constant
The total amount of entropy in the universe is constantly increasing because energy never flows in the opposite direction. So, option A is correct .
Entropy is a measure of a system's unpredictability or disorder, according to its definition.
Entropy rises as a result of the constant downward flow of energy. Energy spreads as widely as it can, and entropy is the dispersion of energy. It moves independently from a hot (highly energetic) location to a chilly (lowly energetic).
As a result, energy is distributed equally across the two locations, and temperatures are the same in both. The identical procedure takes place on a much larger scale. Energy is released into the universe by all stars, including the Sun.
There won't be any warmer or cooler objects because the heat will have dispersed to the point where the stars eventually cool down. It will continue to be the extremely cold.
The overall entropy of the system rises. The total amount of entropy in the universe is constantly rising because energy never flows in the opposite direction.
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in a titration, 4l of a 1.5 m mg(oh)2 are needed to neutralize 1000 ml of h3po4. what is the concentration of the acid solution?
The answer is 7200 milliliters, but since moles are a significant quantity, you'd need a very, very large volume of solution, making this impractical for the sake of many experiments. We will translate the molarity provided into normalcy. It is evident from the description above that 5 ml of 1M [H2S O 4] is needed to neutralize 10 ml of 1N NaOH.
For "NaOH, M=N," The formula is "N (1)V (1)=100 ml xx 1N=100" ml (N) N (2)V (2)=10mlxx10 N=100' ml (N) for "H (2)SO (4)" Thus, "N (1)V (1)=N (2)V (2)" is true. You may clear your doubts and achieve good exam results with the help of step-by-step solutions provided by specialists. NaOH has a 1M molecular weight. The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per litre of a solution is known as molarity. The molar concentration of a solution is another name for molarity. We divide the number of moles of solute by the total volume of litres of solution to determine the molarity of a solution. The moles of solute per litre of solution is measured as molarity. For instance, when table salt is dissolved in water, water serves as both the solution and the solute. Sodium chloride weights 58.44 grams per mole. One molar solution, or 1M, is created by dissolving 58.44 grams of sodium chloride in one litre of water.
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15.14 briefly explain how each of the following influences the tensile modulus of a semicrystalline polymer and why: (a) molecular weight (b) degree of crystallinity (c) deformation by drawing (d) annealing of an undeformed material (e) annealing of a drawn material
A semicrystalline polymer's tensile modulus rises with molecular weight, crystallinity, drawing deformation, annealing of an undeformed material, and decreasing annealing of a drawn material.
What impact does drawing deformation have on the tensile strength of a semicrystalline polymer?Increased secondary bonding forces between molecules prevent molecules from moving and boost tensile strength. A semicrystalline polymer's tensile strength is thereby increased by drawing-induced deformation.
How does tensile modulus change as a result of drawing deformation?The tensile modulus is also increased by drawing-induced deformation. Drawing results in a highly orientated molecular structure and a high level of interchain secondary bonding.
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ammonia gas reacts with oxygen gas, o2(g), to produce nitrogen dioxide and water. when 28.5 g of ammonia gas reacts with 83.4 g of oxygen gas to produce 61.9 g of nitrogen dioxide, what is the percent yield of the reaction?
The percent yield of the reaction between ammonia gas with oxygen gas is 90.52%.
A chemical reaction between ammonia gas (NH3) with oxygen gas (O2)
NH₃ + O₂ → NO₂ + H₂O
The balanced reaction 4NH₃ + 7O₂ → 4NO₂ + 6H₂O
Calculate the number of moles from the reactant
Ammonia gasAccording to stoichiometry, the number of moles NO₂ with the number of moles O₂ has the ratio with the coefficient in reaction.
Theoretically the number moles of NO₂The percent yield NO₂ is the ratio of the actual number of moles NO₂ with the theoretical number of moles NO₂ times 100%.
P = (1.35 ÷ 1.49) × 100%
P = 0.9052 × 100%
P = 90.52%
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carbonyl sulfide intermolecular forces
Carbonyl sulfide contains hydrogen bonds as its intermolecular force.
It is stronger than van der Waals forces but weaker than ionic or covalent bonds when two atoms with high electron affinities engage with one another through hydrogen bond. It is important to note that hydrogen bonds are not covalent bonds to hydrogen atoms, but rather an unique kind of dipole-dipole attraction between molecules. It originates from the attractive attraction between a hydrogen atom covalently bound to an extremely electronegative atom, like an N, O, or F atom, and an additional extremely electronegative atom.
A bond known as a hydrogen bond is formed between the hydrogen atom and more electronegative elements like N, O, and F. H O H, NH 3, etc.
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Fill in the blanks to match the appropriate phrases.
WORDS
K+ permeability
Membrane potential of -90 and mV
Membrane potential of -70mV
Na+ permeability
PHRASES
The point at which there is no net movement of K+ into or out of the cell
Since there are several open channels, the membrane is permeable to K+ when at rest. The equilibrium potentials for sodium (ENa) and potassium (ENa) are +60 mV and 90 mV, respectively.
The main determinant of the resting membrane potential is K+ permeability. The permeability of Na+ Although it contributes, the resting membrane potential is not primarily determined by this factor.-70 mV membrane potential: The cell's resting membrane potential-90 mV membrane potential: the time when neither a net inflow nor an outflow of K + occurs in the cell.The membrane is more permeable to potassium than sodium while it is at rest because significantly more potassium channels are open than sodium channels.
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they are substances that produce ions when they dissolve in water.
Electrolytes are substances that produce ions when they dissolve in water.
What are electrolytes?
When some substances are dissolved in water, they undergo physical or chemical changes, creating ions in solution. These substances form an important class of compounds called electrolytes. Substances that do not release ions when dissolved are called non-electrolytes. A substance is said to be a strong electrolyte if the physical or chemical process that produces ions is inherently 100% efficient (all dissolved compounds produce ions). A solute is said to be a weak electrolyte if only a relatively small portion of the solute undergoes ion production processes.
By measuring the electrical conductivity of aqueous solutions containing substances, substances can be identified as strong, weak, or non-electrolyte. To conduct electricity, a substance must contain free-moving charged species. The best known is the conduction of electricity through metal wires. In this case, the mobile charged unit is the electron.
Therefore, Electrolytes are substances that produce ions when they dissolve in water.
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which of the components of the mixture is most likely to be extracted from the organic solvent phase into the aqueous phase?
Citric acid, malic acid, and lactic acid, among other organic acids present in the mixture, are more likely to be extracted into the aqueous phase from the organic solvent phase.
Organic compounds with acidic characteristics are known as organic acids. The most prevalent organic acids are those that include the carboxyl group COOH, which is what gives them their acidity. Everyone uses organic solvents in the majority of their daily operations, from disinfectant treatment to the elimination of challenging grease stains. The cologne or perfume we wear, as well as laundry detergents needed to keep garments clean and fresh. HOC(CO2H)(CH2CO2H)2 is the chemical formula for citric acid, an organic molecule. This organic acid is weak and colourless. Citrus fruits contain it naturally.
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the two reactants shown below are combined to bring about a nucleophilic substitution reaction.
1) Substitution occurs on carbon b
2) The leaving group is g
3) The nucleophile e
What is a nucleophilic substitution reaction?We know that when we are talking about a substitution reaction, we have to be looking at the kind of reaction that is going to occur when a particular moiety leaves a compound and is replaced by another moiety. When the attacking agent in the reaction is a specie that is rich in electrons (either a lone pair or a negative charge) and the attack is on a positive center in the substrate, we say that the reaction is a nucleophilic substitution reaction.
The leaving group has to do with the chemical moiety that is seen to depart from the substrate in the course of the reaction while the nucleophile is the specie that attacks the substrate.
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Another series of lines is the Lyman series whose energy transitions end in the n=1 state. List the
wavelengths and the energy levels involved in these transitions. In what region of the spectrum are
these lines found?
These lines are located in the spectrum's =1. 64106 region.
What are the wavelengths and hues of the hydrogen visible spectrum emission lines?Due to this, the emission spectra of hydrogen has emission lines at 410 nm (violet), 434 nm (blue), 486 nm (blue-green), and 656 nm (blue-green) (red). The electrons that fall the farthest emit light with the highest energy and shortest wavelength.
Which electron transition has the highest energy content?The highest energetic transition, which results in violet light with a wavelength of 410 nm, is from n=6 to n=2. Page 35 21. Take Model 3's electron transitions into consideration. b) Based on your comprehension of the forces that attract each other, describe why this transition requires the most energy.
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Why is Gold non-reactive?
Metals such as copper, silver, and gold are the least reactive and are at the bottom of the reactivity scale, this is the reason tha gold is non-reacive.
Why is Gold non-reactive?The one electron in the 6s orbital is more closely bonded to the nucleus and has less space to form bonds with other atoms as a result of the contraction of the 6s orbital. The 4f and 5d orbitals expand but cannot participate in bond formation since they are totally filled. This explains why gold is largely inert.
Due to its low reactivity in the reactivity series and its propensity to resist reactions with moisture or air, gold does not corrode. Most acids and oxygen have little effect on gold. Compared to other substances like sulphides or oxides, gold is the most stable.
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draw a product of bromination of this alkene. clearly indicate stereochemistry at each chiral carbon by drawing a wedged bond, a dashed bond and two in‑plane bonds.
Alkene is produced during bromination. When pure liquid bromine or bromine dissolved in a solvent such tetrachloromethane is present, alkenes will react with it in the cold.
What exactly does bromination entail?Bromination In a chemical process known as bromination, a compound is subjected to bromination, which adds bromine to the substance. Following bromination, the result will possess traits distinct from the original reactant.
Give me an instance of bromination?An instance of an electron donating aromatic substitution process is benzene's bromination. In this process, the electrophile (bromine) joins the benzene ring with a sigma bond to produce an intermediate. After that, the intermediate undergoes a proton removal to create a substituted ring structure.
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Draw the major organic product of the following process: 1) Hg(OAc)z, CH3OH 2) NaBH4, NaOH 2 Edit no reaction
The major organic product of the mentioned reaction is tetralin with an alkoxy functional group and the diagram is attached below:
What is a functional group?In organic chemistry, a functional group is a specific group of atoms or bonds within a compound that are responsible for the characteristic chemical reaction of that compound. The same functional group will behave in similar ways and undergo similar reactions regardless of the compound it is part of.
Alkoxy groups are functional groups based on oxygen, carbon, and hydrogen. A functional group is a chemical substituent attached to an organic backbone. It is a characteristic substituent of various molecules attached to an organic carbon skeleton.
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The complete question is as follows:
Consider the Lewis structure for glycine, the simplest amino acid: (a) What are the approximate bond angles about each of the two carbon atoms, and what are the hybridizations of the orbitals on each of them? (b) What are the hybridizations of the orbitals on the two oxygens and the nitrogen atom, and what are the approximate bond angles at the nitrogen? (c) What is the total number of σ bonds in the entire molecule, and what is the total number of π bonds?
Each carbon is tetrahedrally planar and has three sections, making all bond angles in (a) 120°.(b) hybridization with sp2.(c) If a double bond is present in the compounds, one of the bonds is a sigma connection and the other a pi bond.
What is an example of an amino acid?A basic amino group (NH2), a carboxyl group group (COOH), and an organic Aromatic rings that really is specific to each amino acid make up an amino acid, an organic molecule.
Which five amino acids are there?You must obtain the nine essential amino acids cytochrome c, isoleucine, hcl, lysine, methionine, phenylalanine, alanine, tryptophan, and valine through your food.They are essential for several bodily processes, such as protein biosynthesis, tissue regeneration, and nutrient uptake.
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if a reaction produces an insoluble salt what will you notice happening in the test tube
When a reaction produces an insoluble salt we will notice cloudiness and solids accumulating at bottom of the test tube.
We refer to a substance as a precipitate if it creates an insoluble salt as a result of soluble compounds reacting in water (see image).Most carbonates other than sodium and potassium, most hydroxides other than sodium and potassium, lead sulfate, barium sulfate, silver chloride, silver bromide, lead iodide, and lead chloride, lead bromide, lead iodide, are insoluble in water.AgCl, PbBr2, and Hg2Cl2 are hence insoluble. The majority of silver salts are soluble. Common silver salts that are soluble are AgNO3 and Ag(C2H3O2); practically all others are insoluble. Salts of sulfate are often soluble.
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Draw the organic product of the reaction: H" heat OH OH
A scientist can determine a reaction's exothermicity (or whether it produces heat) using the formula Delta H. (or is endothermic). Delta H generally equals m x s x Delta T, where Delta T is the temperature change caused by the reaction and m is the mass of the reactants.
Is H an endotherm or an exotherm?
When a chemical reaction has a positive H value, it is said to be endothermic; when it has a negative H value, it is said to be exothermic. What does it signify when a process's H value is positive. It indicates an increase in energy for the system hosting the chemical reaction.
What in thermodynamics is H?
H stands for "enthalpy change," Hf for the system's final enthalpy (in a chemical reaction, this would be the enthalpy of the products or the system at equilibrium), and Hi for the system's starting enthalpy (in a chemical reaction, the enthalpy of the reactants).
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Why is electromagnetic radiation a transverse wave?
Since the direction of particle displacement in electromagnetic waves is also perpendicular to the direction of motion, generating the waveform of visible light and other forms of electromagnetic radiation, they are also transverse waves.
In a transverse wave, the displacement is perpendicular to the direction of motion (at an angle of 90 degrees Celsius). The direction of displacement (up and down) in the case of the ocean wave is perpendicular to the direction of wave motion (horizontally along the water), making it a transverse wave.
How far a particle has moved from its original starting position, or, in the case of an ocean wave, how high or low the water is, is measured by its displacement or amplitude.
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29) The molecular geometry of the PF4+ ion is octahedral B) tetrahedral trigonal pyramidal D) trigonal planar E) trigonal bipyramidal '
It has a tetrahedron shape, etc. Tetrahedral in form and with a positive charge on the phosphorus atom, PF4+ has a Lewis structure.
A triangular bipyramid formation is a molecular shape in chemistry that has one atom in the middle and five additional atoms at each of its four corners. The bond angles in a tetrahedral structure with a central atom are around 109.5 degrees IF5 is shaped like a square pyramid, whereas PCl5 is a trigonal bipyramid.
There is no electron lone pair on the phosphorus atom in the PH+4 ion. Tetrahedral in shape, it has a bond angle of 10928′.
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What is the name of the compound: CoN: #spelling counts! Answer: Name the following acid: HI
Iodides are made by reacting hydrogen iodide (HI), also known as hydroiodic acid, with metals or their oxides, hydroxides, and carbonates.
The acid in this instance is Hydroiodic acid (HI) entirely dissociates in water, making it a powerful acid. Iodine is bigger than hydrogen, which is smaller. As a result, the electron cloud's overlapping is likewise not very appropriate. This results in an extremely low binding energy between hydrogen and iodine. An aqueous solution of hydrogen iodide is known as hydroiodic acid (or hydriodic acid). It is a potent acid that totally ionizes in aqueous solutions. It has no color. Concentrated solutions typically range in HI from 48% to 57%.
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which substance would you expect to have the highest melting point? which substance would you expect to have the highest melting point? ch3ch2ohch3ch2oh ch3clch3cl ch3ch3ch3ch3 c2h2
ch3ch2ohch3ch2oh has high melting point.
What is Melting point?
The liquefying point of a substance is the temperature at which a strong and fluid stage might coincide in balance and the temperature at which matter changes from strong to fluid structure. The term applies to unadulterated fluids and arrangements. Dissolving point relies upon pressure, so it ought to be determined. Commonly, tables of softening focuses are for standard tension, like 100 kPa or 1 climate. Softening point may likewise be known as the liquefaction point.
Liquefying point is the temperature at which a given strong material changes from a strong state to a fluid, or melts. As the system or pace of synthetic corruption of a medication is probably going to be different in strong and fluid state.
Now that we recognize some thing about degree outlines, it will appear good enough why researchers represent softening factor the way in which they do. In the first region, in normal phrases, the softening The liquefying factor is equal to the threshold of freezing over! At the give up of the day, it goes from a strong to a fluid on the very temperature that it is going from a fluid to a sturdy.
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A population of a wild animal is a frequent target for hunters. Hunters tend to hunt the larger animals with big horns. How might this affect the populations in the wild?
A.
Animals with average horns will increase in number.
B.
Smaller animals with a trait for short horns will become endangered.
C.
Traits for larger animals with big horns will be selected.
D.
Traits for smaller animals with short horns will be selected.
Traits for larger animals with big horns will be selected.
Draw the structure of the product of the reaction between the compound shown below and BF3. CH3SCH3 You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. If the reaction involves proton transfer, draw the products in separate sketchers. If the reaction is a Lewis acid-base reaction, draw the product in one sketcher only.
stereochemistry of triphenyl. Methyl benzoate with too much phenylmagnesium bromide engage in a Grignard reaction, which results in the formation of methanol.
In this situation, there will be a decrease response. From an ester group, we go on to an alcohol group. The LiAlH4 group must first transfer a hydride to the carbonyl group. After then, the ethyl group splits into ethanol and an aldehyde, which continue to interact with LiAlH4. In this instance, another hydride is transferred to the carbonyl group and alcohol is produced as a result. (See Figure. The stereochemical outcome of the Grignard reaction between excess phenylmagnesium bromide and methyl benzoate is triphenyl methanol. The reaction advances through a nucleophillic reaction as the carbonyl moiety is attacked. A tetrahedral structure is developing.
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a sample of argon with a volume of 6.18 l, a pressure of 1.00 atm, and a temperature of 293 k expanded to a volume of 9.45 l and pressure of 0.49 atm. what was its final temperature?
The final temperature for the following sample of argon with a volume of 6.18 l, a pressure of 1.00 atm, is 219.5 K.
The ideal gas equation is generally PV =nRT but for the pressure and temperature the equation is P1V1 / T1 = P2V2 /T2. The P is pressure T is temperature and V us volume that us given along with the temperature and pressure in the ideal gas equation.
Here we have the ideal gas equation as ;
P1 ,= 1.00 atmP2= 0.49 atmV1= 6.18 LV2= 9.45 lT1= 293k T2= ?So the formula is P1V1 / T1 = P2V2 /T2= 1.00*6.18/293 = 0.49*9.45/T2= T2 = 0.49*9.45*293/1.00*6.18 = 219.5 KThen T2 is = 219.5 KRead more about volumes;
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2. When water flows over limestone, is dissolved,
O Icreating hard water.
O sodium chlorine
O carbon
O calcium
The correct option is D.
When water flows over limestone, Calcium is dissolved.
What is limestone?A hard sedimentary rock, composed principally of calcium carbonate or dolomite, used as building item and in the making of cement is called limestone.
What is calcium carbonate?
A chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite and is the main component of eggshells, gastropod shells, shellfish skeletons and pearls is called calcium carbonate. Things containing much calcium carbonate or approximative it are explained as calcareous. Calcium carbonate is the active component in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be dangerous and reason hypercalcemia and digestive issues.
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URGENT.
Describe the electronegativity differences between the atoms involved in ionic polar covalent and nonpolar covalent bonds
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, ionic bond is polar and covalent bond is non polar.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
The compound that is ionic in nature can be dissociated very easily in water. Since ionic compounds are polar in nature, they readily dissolve in water.
Ionic bond is formed by element whose difference in electronegativity is high, these are polar. Whereas, covalent bond is formed by element whose electronegativity difference is zero.
Therefore, ionic bond is polar and covalent bond is non polar.
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Draw the electron distribution diagram for water: Begin with 1 central water molecule. Show the chemistry of each element within the central water molecule (all electron orbits, lone pair electrons, type of chemical bond, polarity/charge, and correct shape). What type of bond creates a water molecule? What type of bond holds water molecule to another water molecule? Next; draw the correct number of other water molecules bonding to thc central water molecule How many other water molecules bond to a central molecule of water?
Hydrogen bonds are formed between neighboring water molecules' hydrogen and oxygen atoms. The attraction between individual water molecules results in the formation of a bond known as a hydrogen bond.
How many water molecules can bond together?A water molecule comprises two hydrogen atoms. Both of these atoms are capable of creating hydrogen bonds with the oxygen atoms of different water molecules. The greatest number of hydrogen bonds that can be formed by a water molecule is three.
How many lone and bonded pairs are there in water?The coordination geometry of oxygen is based on a tetrahedral arrangement of electron pairs, while water has four electron pairs. There are two lone pairings because there are only two bound groupings.
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A scientist measures the standard enthalpy change for the following reaction to be -14.1 kJ: 3Fe2O3(s) + H2(g)2Fe3O4(s) + H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is kJ/mol.
b. A scientist measures the standard enthalpy change for the following reaction to be -582.2 kJ : H2CO(g) + O2(g)CO2(g) + H2O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) is kJ/mol.
(a)The standard enthalpy of formation of H2O(g) is -249.3 kJ/mol
(b)The standard enthalpy of formation of CO2 is -187.25 kJ/mol
ΔHrxn = ΔHf(products) - ΔHf(reactants)
(a) Standard enthalpy of formation of the following is:-
Fe2O3(s) = -824 kJ/mol
H2(g) = 0 kJ/mol
Fe3O4(s) = -1118.4 kJ/mol
H2O(g)= Let it be x kJ/mol
Putting these values in the given equations, we get:-
-14.1 = [ 2(-1118.4) + 1(x) ] - [ 3(-824) + 1(0) ]
-14.1 = (-2236.8 + x) - (-2472)
-14.1 = -2236.8 + x + 2472
-14.1 = x + 235.2
x = -14.1- 235.2
x = -249.3
Hence, standard enthalpy of formation of H20(g) is -249.3 kJ/mol
(b) Standard enthalpy of formation of the following is:-
H2CO(g) = -109.15 kJ/mol
02(g) = 0
CO2(g) = Let it be x kJ/mol
H2O(l) = −285.8 kJ/mol
Putting these values in the given equations, we get:-
-582.2 = [ 1(x) + 1(−285.8) ] - [ 1(-109.15) + 1(0) ]
-582.2 = x −285.8 + 109.15
x = -582.2 + 285.8 + 109.15
x = -187.25
Hence, standard enthalpy of formation of CO2 is -187.25 kJ/mol
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identify the following compound. c5h10o: nmr: δ 9.8 (1h, s), δ 1.1 (9h, s)
The Nuclear magnetic resonance data provided in question tells that the molecule is 1-pentanol.
The compound described is likely 1-Pentanol, a simple alcohol with the chemical formula C5H10O. The nuclear magnetic resonance (NMR) spectrum is provided indicates the presence of two types of protons, one with a chemical shift of 9.8 and the other with a chemical shift of 1.1. The "s" notation indicates that these protons are singlet peaks, which means that they are not split by any neighboring protons. The number of protons in each peak (1 and 9) is also consistent with the expected number of protons in a C5H10O molecule.
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