when a non-volatile solute is added to a volatile solvent, the vapor pressure of the solvent is reduced Because solute molecules occupy some of the surface sites. As a result, there is less room for the solvent molecule to vaporise.
nonvolatile solute is a material that doesn't vaporise easily. Furthermore, when dissolved into a solvent, it has no impact on the solution's vapour pressure. What exactly is indeed a nonvolatile liquid? Volatile and non - volatile liquids have a low moisture content and a large melting point. Non-volatile substances involve: Non-volatile substances are those that don't vaporise quickly. At normal room temperature and pressure, they don't have a higher vapour pressure. At ambient temperature, nonvolatile substances are mostly solids. Dissolved compounds include sodium chloride and silver nitrate. Water, with a boiling temperature of 100 degrees Celsius, is an excellent example of a non-volatile liquid. This is due to the influence of strong hydrogen bonds between molecules of water, as previously discussed. Mercury is a non-volatile liquid as well.
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a) (3 pts) Draw the Lewis structures of ICN, I, and CN_ b) (2 pts) Which of these particles obey the octet rule and which do not? c) (6 pts) The decomposition occurred under the action of light with the wavelength 306 nm. A single pulse of such light had a duration of 350 fs and energy of 150 QU. How many photons were present in the pulse? Report the answer to two significant figures: d) (4 pts) If this laser kept working continuously for 1.0 minute; how many Joules of energy would it deliver? e) (2 pts) After the laser flash, the atoms and CN radicals quickly react with each other in the dark yielding a mixture of the original ICN and also some Iz and (CN)z: Draw the Lewis structures of Iz and (CN)z:
Octet rule is obeyed by I and CN and ICN don't follow the rule. 350 Joules of energy would the laser light deliver.
The octet rule, a chemical guideline, is based on the idea that main-group elements normally bind so that each atom has eight electrons in its valence shell, giving it the same electrical configuration as a noble gas. The rule is particularly applicable to carbon, nitrogen, oxygen, and halogens, while it is more generally applicable to the s-block and p-block of the periodic table. The 18-electron rule for transition metals or the duplet rule for hydrogen and helium, for instance, apply to other elements. The valence electrons can be counted using a Lewis electron dot diagram, like the one for carbon dioxide on the right. The two shared electrons in a covalent link are counted twice, one for each atom. Four electrons are shared by each oxygen atom in carbon dioxide, two from the oxygen itself (shown in red) and two from the carbon. It can be claimed that both the carbon octet and the oxygen octet follow the octet rule because they both count all four of these electrons.
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■) Explain why the mass of 1 mol of zinc differs
from the mass of 1 mol of sulfur.
Answer:
A big load of icecream/ loaded cake.
Explanation:
Predict the electron pair geometry and the molecular structure of each of the following:(a) IOF5 (I is the central atom) (b) POCl3 (P is the central atom) (c) Cl2SeO (Se is the central atom) (d) ClSO+ (S is the central atom) (e) F2SO (S is the central atom) (f) NO−2 (g)SiO4−4
The electron pair geometry and the molecular structure of each of the following are IOF5 (I is the central atom) is Number of bond pairs = 6, variety of lone pairs = 0 ⇒ electron pair geometry = octahedral, molecular structure = octahedral.
The significant iodine atom belongs to the 17th organization of periodic desk so it has seven valence electrons.
For forming 5 single bonds and one double bond, all seven of the valence electrons are used.
Similarly, Number of bond pairs = 4, variety of lone pairs = 0 ⇒ electron pair geometry = tetrahedral, molecular structure = tetrahedral.Number of bond pairs = 3, variety of lone pairs = 1 ⇒ electron pair geometry = tetrahedral, molecular structure = trigonal pyramidal.Number of bond pairs = 2, variety of lone pairs = 1 ⇒ electron pair geometry = trigonal planar, molecular structure = bent.Number of bond pairs = 3, variety of lone pairs = 1 ⇒ electron pair geometry = tetrahedral, molecular structure = trigonal pyramidal.Number of bond pairs = 2, variety of lone pairs = 1 ⇒ electron pair geometry = trigonal planar, molecular structure = bent.Number of bond pairs = 4, variety of lone pairs = 0 ⇒ electron pair geometry = tetrahedral, molecular structure = tetrahedral.Read more about electron:
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16. (8 points) Why does sulfur have smaller atomic radius than phosphorus but oxygen? (Do not give me trends_ larger atomic radius than but describe the physical reasons behind their size difference)
The electrons are anticipated to be attracted nearer to the nucleus when there is a stronger attraction between the two. As a result, the atom will be smaller in size. The element with more protons will be smaller because silicon and sulfur are both in the same period. Sulfur will thus be smaller than silicon.
Why does sulfur's atomic radius differ from phosphorus'?
Sulfur's atomic radius is less than that of phosphorus.
This is because the effective nuclear charge varies depending on how many protons are present in the nucleus. Less protons make up the nucleus of phosphorus. This indicates that the nucleus is less drawn to attract electrons, resulting in a bigger size.
Why does oxygen's atomic radius differ from sulfur's?
The number of protons in oxygen is 8, while there are 16 protons in sulfur. This demonstrates unequivocally that sulfur is larger due to its greater proton density and greater orbital filling. Sulfur hence has a bigger atomic radius.
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calculate the ph of a buffer solution obtained by dissolving 22.0 g of kh2po4(s) and 42.0 g of na2hpo4(s) in water and then diluting to 1.00 l.
The given statement states because when 22.0 g of kh2po4(s) but also 42.0 g of na2hpo4(s) have been dissolved in water and afterwards diluted to 1.00 l, this same pH of a buffer is 7.49.
What is the dissolving in chemistry?Whenever the interaction between the solvent particles is strong enough to outweigh the affinity between the solute particles for one another, dissolving occurs. As water molecules move quickly enough to separate from a solution and disperse into the air, evaporation takes place.
Briefing:when Na2HPO4's molar mass= 42.0 g/mol
A is conjugate base HPO4-- ions, and as a result,
∴[A] = 26g / 42.0 g/mol
= 0.619 M
and when KH2PO4's molar mass is 22.0 g/mol
Additionally, AH is the acid H2PO4- ion.
∴[AH] = 13 g / 22.0g/mol
= 0.590 M
and with H3PO4 having a Pka value of 7.21
then, substituting∴ PH = 7.21 + ㏒ (0.619 / 0.590)
= 7.49
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a chemical reaction involes the reaction of species a and b a b --> products the below kinetic data is measured. what is the order with respect to species a? experiment
The order of the reaction with respect to species A is 3 when the chemical reaction involved is between A and B.
The given reaction is as follows:
A + B -----> P
We know that rate of the reaction is given by,
r α [A]^x [B]^y
Then,
r = k[A]^x [B]^y
Then, the order for any reaction is given by,
Order = x + y
Then, from the table given about the kinetic data, let us consider
0.001 = k[0.10]^x[0.10]^y............(1)
0.004 = k[0.10]^x[0.20]^y..........(2)
0.027 = k[0.30]^x[0.10]^y..........(3)
Dividing equation (1) by (3) we get,
0.027/0.001 = k[0.30]^x[0.10]^y/k[0.10]^x[0.10]^y
27 = 3^x
3^3 = 3^x
x = 3
Therefore the order of the reaction with respect to species A is 3.
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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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A student titrated a 25.00 mL sample of HCI with an unknown concentration with 0.150
M NaOH. Phenolphthalein was used as an indicator. The initial volume of NaOH solution before the titration was 1.07 mL.
a. Record the final volume of NaOH according to the picture of the buret.
b. Find the total volume of NaOH solution used to reach the end point.
c. Calculate the molar it’s if the HCl solution
The initial volume of NaOH solution are The final volume of NaOH solution is 6.80 mL.
What is the volume ?The volume of an object is a measure of the three-dimensional space it occupies. It is usually measured in units of cubic centimeters (cc) or cubic meters (m3). In mathematics, volume is the quantity of a three-dimensional figure that is measured in units of length cubed. It is a measure of the amount of space occupied by the object. Volume is an important physical property of matter and is often used to measure the amount of a substance present in a sample.
b. The total volume of NaOH solution used to reach the end point is 5.73 mL.
c. The molarity of the HCl solution is 0.634 M.
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1. What is the strongest intermolecular force present for each of the following molecules?
a. hydrogen (H2)________
b. carbon monoxide (CO)________
c. silicon tetrafluoride (SiF4)______
d. nitrogen tribromide (NBr3)_______
e. water (H2O)_______
f. acetone (CH2O)______
g. methane (CH4)_______
h. H benzene (C6H6)______
i. ammonia (NH3)_________
j. methanol (CH3OH)________
The strongest intermolecular forces present between these molecules includes London dispersion forces hydrogen bonding and dipole dipole forces.
Intermolecular forces are the force that are responsible for keeping the molecule is stable.
There are Several kind of intermolecular forces like dipole-dipole forces, London-dispersion forces, hydrogen-bonding etc.
In the given compound the strongest intermolecular forces present for each of the molecule is,
Hydrogen (H) London dispersion forces
Carbon monoxide (CO) London dispersion forces
Silicon Tetrafluoride (SiF₄) London dispersion forces
Nitrogen tribromide(NBr₃) dipole dipole forces
Water (H₂O) hydrogen bonding
Acetone (CH₂O) dipole dipole forces
Methane (CH₄) London dispersion forces
Benzene (C₆H₆) London dispersion forces
Ammonia (NH₃) hydrogen bonding
Methanol (CH₃OH) hydrogen bonding.
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A chemist makes aluminum sulfide according to the following chemical equation :
16Al (s) + 3S8(little 8) (s)->8Al2S3(little 2 and 3).
He runs the reaction to find that in the end, lots of Al2S3 is made, and the only other chemical present is S8. What is the limiting reaction?
According to the concept of stoichiometry and limiting reactant , the limiting reactant for the given reaction is aluminium as without it formation of product is not possible.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is an important concept while balancing chemical equations.
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Explain why each is an incorrect IUPAC name and write the correct IUPAC name for the intended compound. (a) 1,3-Dimethylbutane (b) 4-Methylpentane (c) 2,2-Diethylbutane (d) 2-Ethyl-3-methylpentane (e) 2-Propylpentane (f) 2,2-Diethylheptane (g) 2,2-Dimethylcyclopropane (h) 1-Ethyl-5-methylcyclohexane
Since the provided compounds are alkanes, we must go by three requirements in order to appropriately name them.
Rule 1: Since we do not have functional groups, we must choose the longest carbon chain that is also the most substituted and that also has a functional group.
Rule 2: Since there are no functional groups here, any substitution must have the fewest number of carbons attached to it.
Rule 3: After putting the first two principles into practice, use the alphabetical order to determine which of two substituents will have a lower number when you are choosing between them.
a)
given name: 1, 3-dimethylbutane
correct name: 2-methylpentane
b)
given name: 4-methylpentane
correct name: 2-methylpentane
c)
given name: 2, 2-dimethylbutane
correct name: 3-ethyl-3-methylpentane
d)
given name: 2-ethyl-3-methylpentane
correct name: 3, 4-dimethylhexane
e)
given name: 2-propylpentane
correct name: 4-methylheptane
f)
given name: 2, 2-diethylheptane
correct name: 3-ethyl-3-methyloctane
g)
given name: 2, 2-dimethylcyclopropane
correct name: 1, 1-dimethylciclopropane
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you are asked to determine how many moles of water you can produce from 4.0 mol of hydrogen and excess oxygen. (excess oxygen means that so much oxygen is available it will not run out.) which of the numbers that appear in the balanced chemical equation below are used to perform this calculation?
We used both the hydrogen and water coefficients from the aforesaid solution (mole ratio).
Chemical Reaction
[tex]2H_{2}[/tex] + [tex]O_{2}[/tex] → [tex]2H_{2}O (Balanced)[/tex]
Assuming moles of hydrogen are the limiting reactant, calculate the moles of water
[tex]moles H_{2}O = (4 moles H_{2} ) \frac{2moles H_{2}O }{2moles H_{2} } = 4 moles H_{2}O[/tex]
What is Moles?
A substance's mass, which is made up of the same number of essential components, is measured in moles. A 12 gram example has atoms that are the same as 12C. The basic building blocks of a substance could be molecules, atoms, or formula units.
The quantity of chemical elements is indicated by the mole fraction. One mole of any substance has a value of 6.023 x 1023. (Avogadro number). The byproducts of the chemical reaction can be measured using it. The unit is denoted by the sign mol.
The following expression represents the number of moles formula
Number of moles = Mass of substance / Mass of one mole .
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What is the pH of 10^(−2) M HCl solution?
A 0.010 M answer of hydrochloric acid, HCl, has a molarity of 0.010 M. This approach that [H+] = 1 x 10-2 M. The pH of this aqueous solution of H+ ions is pH = 2.
The alternative hand, materials inclusive of hydrochloric acid, HCl, are held collectively through polar ionic bonds and whilst positioned into water the hydrogen will destroy away to shape hydrogen ions, making the liquid acidic. HCl consequently has a completely low pH and is a completely robust acid.
Hydrochloric acid is a sturdy acid which dissociates into single hydrogen (H+) ions in an aqueous solution.
The pH of an answer is given with the aid of using the equation.Because [H+]=10−pH Therefore, the exponent of 10 is the pH and this makes feel due to the fact the pH (2) is much less than 7 , which shows that it need to be an acid. This is proper due to the fact HCl is a sturdy acid, i.e.[H+]=[HCl]pH=−log[H+] [H+] is the hydrogen ion awareness in phrases of molarityAnd so, we got: pH=−log[10−2] = 2Read more about pH;
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Select the charge and write the full ground-state electron configuration of the monoatomic ion most likely to be formed by nitrogen.
The ion of nitrogen will be negatively charged. Its electrical structure reveals that the outermost shell contains 5 electrons (valence shell).
The monatomic ion's charge that is most likely to develop is what?There is often only one atoms ion that is likely to develop for ions in and p- blocks. The columns or group that the chemical is in corresponds to the energy of that ion. For instance, because rubidium belongs to group 1, it is likely to produce an ion with a charge of 1+.
What is a monatomic ion's charge?A charged particle with just one atom is called a monatomic ion. Ions can have either a positive or negative charge. Furthermore, the
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The activation energy of a chemical reaction
a. is supplied by a catalyst.
b. is released at the end.
c. starts the reaction.
d. changes with time
Answer:
can we be friends my names ryan
Explanation:
Why is benzene an aromatic hydrocarbon?
Because it adheres to Hückel's criterion, benzoene is an aromatic hydrocarbon.Because of its scent, or "aromatic" smell, benzene was once thought to be aromatic.
What makes benzene an aromatic hydrocarbon?Because of their distinct scents, benzene-like compounds were previously referred to as aromatic hydrocarbons.Any substance that has a benzene ring or exhibits certain benzene-like characteristics is now considered to be an aromatic chemical.
How can you establish that benzene is aromatic?Benzene's aromatisability According to the Huckel rule, an aromatic ring must possess the following characteristics:Planarity.total delocalization of the ring's electrons.the ring contains (4n + 2) electrons, when n is a constant
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What is the Lewis Structure of CHF2Cl?
Each atom in a compound's structure is displayed in its position using the Lewis structure. The chemical name of CHF2Cl is chlorodifluoromethane.
What is Lewis structure?
Lewis structures, often referred to as Lewis dot formulas, electron dot structures, or Lewis electron dot structures, are diagrams that depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present. The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure.
Why Lewis structure is important?
When used in conjunction with hybrid orbitals, Lewis structures can also be helpful in predicting molecular geometry.
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how wide does this grating need to be to allow you to resolve the two lines 589.00 and 589.59 nanometers, which are a well known pair of lines for sodium, in the second order ( m
A. n = 105 lines/mm = 105000 lines/m
d*sin θ = m*λ
(1/105000) * sin θ = 1*498*10^-9 ⇒ θ = 3.0 degree
Also (1/105000) * sin θ = 1*569*10^-9 ⇒ θ = 3.43 degree
Δθ = 3.43° – 3.0°
Δθ = 0.43°
b) Chromatic Resolving power, R = λ / Δλ
λ / Δλ = m (width) n
589 /0.59 = 2 (width) (105000)
Width = 4.75 mm
Diffraction gratings can split beams of different wavelengths into a spectrum of related lines through the principle of diffraction. In certain directions, only waves of certain wavelengths have obtained the rest are destroyed by their respective interference. other.
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for which one of the following is the enthalpy of the reaction the same as the enthalpy of formation?
The enthalpy of production of a compound is the difference in enthalpy between the reactants (elements in their standard condition) and the complex itself (product).
What does enthalpy of formation mean?The standard reaction enthalpy for the creation of the chemical from its constituent parts (atoms or molecules) in the most stable reference states at the selected temperature (298.15K) so at 1bar pressure is known as the enthalpy of formation.
The reaction whose standard enthalpy of production is so named?The enthalpy change that occurs when one mole of any compound is created from its component components in their standard states is known as the "standard enthalpy of production." The reaction 2 C (graphite) + 3 H2 (g) C2H6 is what is referred to as the enthalpy of production of one mole of ethane gas (g).
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if two equilibrium reactions are added together, what is the relationship between the equilibrium constants for the individual reactions and that for the overall reaction?
The equilibrium constant for overall reaction is the product of the equilibrium constant of the added reaction.
If two equilibrium reactions are added together, the relationship between the equilibrium constants for the individual reactions and overall reaction is the equilibrium constant for overall reaction is the product of the equilibrium constant of the added reaction.
the reaction is given as :
A + B ⇄ AB
K1 = [AB] / [A] [B]
AB + A ⇄ A₂B
K2 = [A₂B] / [AB] [A]
now the addition of two equation is given as :
2A + B ⇄ A₂B
K overall = [ A₂B] / [A]² [B]
this means : equilibrium constant for overall reaction :
K overall = K1 K2
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br2 is a liquid with a density of 3.03 g/ml. determine the pressure in atm exerted by a column containing br2 at a height of 1000 mm. the density of mercury is 13.6 g/ml.
The mercury's density is 13.6 g/ml, hence the pressure exerted by a column of br2 at a height of 1000 mm is 0.2933 atm.
Density of liquid Br2 = 3.03 g/ml
Height of column = 1000mm =1m
Pressure exerted in N/[tex]m^{2}[/tex] = ρgh
pressure in atm = 2.972 × [tex]10^{4}[/tex]/101325 = 0.2933 atm
Temperature and pressure affect a substance's density. For solids and liquids, this difference is often negligible, but for gases, it can be very significant. A decrease in volume and subsequent increase in density result from applying more pressure to an object. (With a few exceptions) Increasing a substance's temperature causes its volume to increase, which reduces its density. As a result of the heated fluid's reduced density, which causes it to rise in relation to the denser unheated material, heating a fluid's bottom typically generates convection, or the transfer of heat from the bottom to the top.
The word "specific volume," which is sometimes used in thermodynamics, refers to a substance's reciprocal of density. The intensive quality of density.
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what is the final concentration of a solution prepared by dilutingwhich molecule below has hydrogen bonding? 6) a) ch 4 b) hcl c) ch 3 ch 2 oh d) h 2 e) all of the above35.0 ml of 12.0 m hcl to a final volume of 1.20 l?
The intermolecular Hydrogen-bonds between CH3CH2OH and H2O are very strong because H atoms are bound to the electronegative O atoms. Therefore, their boiling points are higher.
Does hydrogen bonding occur with CH3OH?Since hydrogen is covalently linked to the more electronegative atom oxygen in the molecule CH3OH, hydrogen bonding is present in this compound.
In ch3oh, how many hydrogen bonds are there?In fact, it results from the fact that whereas each molecule of H2O can generate up to four intermolecular hydrogen bonds, the same molecule of CH3OH can only form up to three.
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mineral resources are used for creating materials whereas resources are used for power.
Materials are produced using mineral resources, whereas power is produced using energy resources.
Metallic and nonmetallic mineral resources can be separated into two main groups. Resources that are considered to be metallic include things like gold, silver, tin, copper, lead, zinc, iron, nickel, chromium, and aluminum. Sand, gravel, gypsum, halite, uranium, and dimension stone are examples of nonmetallic resources. A quantity of rock that is rich in one or more beneficial materials is known as a mineral resource. This definition of a mineral differs from how we initially defined it in Chapter 5. It now refers to a valuable substance. Any earthly substance can be referred to here as a mineral.
The application of geological ideas that have been covered in this course or will be covered needs the discovery and exploitation of mineral resources. Some minerals are used in their natural form.
Question:
Mineral resources are used for creating materials whereas _____ resources are used for power
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What is the correct IUPAC name for Se₂I₈?
The correct IUPAC name for Se₂I₈ is diselenium octaiodide.
IUPAC stands for International Union of Pure and Applied Chemistry. It is an international scientific organization that sets standards for the naming of chemical compounds.
It is an international scientific organization that sets standards for the chemical nomenclature, terminology, and measurement used in science. The IUPAC name, also known as the systematic name, of a chemical compound is a technical term used to uniquely identify a substance. The IUPAC name is constructed according to specific rules and provides a way of identifying a chemical compound in a consistent manner.
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consider this reaction: 6 co2 6 h2o light c6h12o6 6 o2 if you actually produced 30g of c6h12o6 what would be the percent yield? calculate the theoretical yield from having 2.38 x 102 g of h2o, 18.6 moles of co2.
The potential yield is composed of 608.22 grams of C6H12O6 and 531.2 grams of oxygen.
Describe the mole.The quantity of a substance that contains precisely 6.02214076 X 1023 of its essential components is called a mole.
A material is considered to contain a mole of a substance if it has the same mass as 12.000 g of 12C and the same number of elementary particles as atoms.
Find the theoretical yield of the reaction:
Here is the response: C6H12O6 + O2 = 6 CO2 + 6 H2O.
A mass of 2.38 x 102 g of water is given.
18.6 moles of CO2 are provided.
C6H12O6 is formed from 6 CO2 and 6 H2O.
6 moles of water. C6H12O6 in 1 mole
0.6 moles of C6H12O6 are equal to 1 mole of water.
18 g of water equals 276/6 g of C6H12O6.
? gram of C6H12O6 = 2.38*102 gm of H2O
C6H12O6 is 2.38+102+276/618 = 608.22 grams.
1 mole of C6H12O6 is equal to 276g, so 1 mole of C6H12O6 is equal to 608.22g, which is equal o 2.2 moles of C6H12O6.
O2 is equal to 6 moles of CO2.
Moles of CO2 and O2 are equal. 18.6 moles of CO2 are equal to 18.6 moles of O2.
O2 in a mole equals 32 grams.
18.6 moles of oxygen are equal to? gm (18.6*32) or 531.2 gms of oxygen. The potential yield is composed of 608.22 grams of C6H12O6 and 531.2 grams of oxygen.
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how different does body systems communicate when the body as a fever
Answer:
When the body has a fever, the body systems may communicate differently in order to fight off infection. The body’s immune system may kick into gear, releasing cytokines and other immune mediators to fight off the infection. The body’s endocrine system may release hormones such as adrenaline, cortisol, and others to help fight the infection. The nervous system may become more active as the body works to regulate its temperature, causing shivering or sweating. The cardiovascular system may also become more active, pumping more blood to the skin surface to cool the body and to the organs where infection-fighting cells can be more easily delivered.
Explanation:
what is the coefficient of fe(oh)2 when the following redoxequation is balanced? bro- fe(oh)2 --> br- fe(oh)3 (basic solution)
The coefficient of fe(oh)2 in the balanced redox equation is 2.
What is redox reaction?
Any chemical reaction in which a participating chemical species' oxidation number changes is known as an oxidation-reduction reaction, often known as a redox reaction.
[tex]BrO- + H2O + 2e- > Br- + 2OH-[/tex]
[tex]Fe(OH)2 + OH- > Fe(OH)3 + e-[/tex]
[tex]BrO- +H2O + 2Fe(OH)2 = Br- +2Fe(OH)3[/tex]
The way of balancing is as follows
Step 1) divide the equations into two half reactions
oxidation half reaction reduction half reaction
Fe(OH)2 --> Fe(OH)3 BrO- --> Br-
Step 2) balance atoms other than oxygen and hydrogen
Fe(OH)2 --> Fe(OH)3 BrO- --> Br-
Step 3) add OH- ions ,where the oxygen atoms are deficient, add the H2O molecules in required number to balance H atoms
Fe(OH)2 + OH- --> Fe(OH)3 BrO-+H2O --> Br- + 2OH-
Step4) now add required number of electrons to balance the charge. don't forget the number of electrons loss in oxidation half reaction= the number of electrons gain in reduction half reaction
[tex]2Fe(OH)2 +2OH- -- > 2Fe(OH)3+2e-[/tex]
[tex]BrO- + H2O +2e--- > Br- + 2OH-[/tex]
Step5) now add the both half reactions ,re write
BrO- +H2O + 2Fe(OH)2 = Br- +2Fe(OH)3.
Therefore, the coefficient of fe(oh)2 in the balanced redox equation is 2.
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Predicting Ionic compounds formed by two elements Abdu Decide whether each pair of elements in the table below will form an onic compound. If they will, write the erpirical formula of the compound formed In te space provided_ element #1 element *2 Forms ionic compound? empirical forniula of ionic compound sulfur iodine sodium Aluorine Yes Iithium bromine 3 yes sulfur sodium
Yes, sulfur and sodium will form an ionic compound. The empirical formula of the compound formed is Na2S.
When two elements form an ionic compound, one element is usually a metal and the other is a non-metal. Ionic compounds are formed when electrons are transferred between the two elements. In the given pairs, sulfur and iodine, sodium and chlorine and lithium and bromine all contain one metal and one non-metal and therefore are likely to form ionic compounds. The empirical formulas of these compounds are
I2S, NaCl and LiBr, respectively.
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toxic chemicals dumped into a river are an example of .a.pollutionb.greenhouse gasesc.smogd.ozone
The correct answer is option a.
Toxic chemicals dumped into a river are an example of water pollution.
What is Pollution?Pollution is the process of making land, water, air or other parts of the environment dirty and not safe or suitable to use. This is done through the introduction of a contaminant into a natural environment.
Types of PollutionLand - Land can become polluted by household garbage and also by industrial waste. Households generate hazardous waste including paints and solvents, motor oil, fluorescent lights, aerosol cans and ammunition which are harmful to the environment.
Water - Water pollution happens when chemicals or dangerous foreign substances are introduced to water bodies, including chemicals, sewage, pesticides and fertilizers from farms, or metals like lead or mercury.
Air - Air pollution occurs when things that aren't normally there are added to the air. A common type of air pollution happens when people release particles into the air from burning fuels.
Noise - Noise pollution happens when the sound coming from planes, large machinery in industries or other sources reaches harmful levels.
Types and sources of water pollutantsWater bodies can be polluted by a wide variety of substances which include the following;
pathogenic microorganismorganic wastefertilizers and plant nutrientstoxic chemicalssedimentsheatpetroleum (oil)radioactive substances.Waste is toxic if it is poisonous, radioactive, explosive, carcinogenic (causing cancer), mutagenic (causing damage to chromosomes), teratogenic (causing birth defects), or bioaccumulative (that is, increasing in concentration at the higher ends of food chains).
Sources of toxic chemicals include improperly disposed wastewater from industrial plants and chemical process facilities (lead, mercury, chromium) as well as surface runoff containing pesticides used on agricultural areas.
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i forgot how to balance a chemical equation. can someone give me some examples? a simple one and then a more complex one would be preferrable.