122 L of oxygen is produced at STP when water is decomposed to the reactants. here decomposition reaction occurs.
Decomposition Reaction is the process or effect of simplifying a single chemical entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis. Decomposition reaction of water can be written as,
2H2O → 2H2 + O2
Oxygen is produced at STP when 6.58 x 1024 molecules of water is decomposed. So there will be,
0.5 × 6.58 × 1024
= 3.29 × 1024 O2 molecules.
1mole = 6.02×1023 particles, so the amount produced is:
= 3.29×1024 / 6.02×1023
= 5.47mole
At an STP of 273K, 1atm the volume is 22.4L/mole
So the volume of oxygen is 5.47 × 22.4 = 122L
To learn more about Decomposition Reaction please visit:
https://brainly.com/question/27300160
#SPJ4
What process is represented by this redox equation?
-
6H20 + 6CO2
C6H1206 +602
A. Cellular respiration
B. Rusting
C. Photosynthesis
D. Combustion
The process that is represented by this redox equation
6 H₂O + 6 CO₂ ---> C₆H₁₂O₆ + 6 O₂ is photosynthesis.
The correct option is C.
What is a redox reaction?A redox reaction is a reaction in which oxidation and reduction occur simultaneously at the same time and to the same extent.
In a redox reaction, electrons are transferred from one species to another.
The species that transferred electrons becomes oxidized whereas the species that accepts electrons becomes reduced.
Hence, a reduction reaction is a reaction in which a chemical species accepts electrons while an oxidation reaction is a reaction in which a chemical species donates electrons.
Considering the given reaction:
6 H₂O + 6 CO₂ ---> C₆H₁₂O₆ + 6 O₂
In the given reaction, carbon is reduced while oxygen is oxidized.
The reaction shows the process of photosynthesis where carbon dioxide is reduced to produce glucose.
Learn more about redox reactions at: https://brainly.com/question/26263317
#SPJ1
Kinetic energy___ the speed and/or the masse of a raised object
Kinetic energy directly proportional to the speed and/or the masses of a raised object.
What is kinetic energy?An item possesses kinetic energy when it is in motion. Applying force is necessary if we wish to accelerate an item. We must put forth effort in order to apply a force. Once the job is finished, energy is transferred to the item, which then moves at a new, constant speed.
The amount of kinetic energy that is transmitted is determined by the mass and speed attained. The relationship between kinetic energy and an object's mass and squared velocity is given by K.E. = 1/2 mv².
Thus, Kinetic energy directly proportional to the speed and/or the masses of a raised object.
To know more about kinetic energy refer to:
https://brainly.com/question/8101588
#SPJ1
write a chemical equation for formation of a polymer via a condensation reaction from the monomers succinic acid (hoocch2ch2cooh) and ethylenediamine (h2nch2ch2nh2).
HOOCCH2CH2COOH + H2NCH2CH2NH2 ----> Polymer + H2O is the chemical equation for formation of a polymer via a condensation reaction from the monomers succinic acid (hoocch2ch2cooh) and ethylenediamine (h2nch2ch2nh2).
A condensation reaction is a chemical reaction in which two smaller molecules combine to form a larger molecule, releasing a small molecule such as water or methanol as a byproduct. Condensation reactions are often used to synthesize polymer, which are large molecules made up of repeating units called monomers.
To write a chemical equation for the formation of a polymer via a condensation reaction from the monomers succinic acid and ethylenediamine, we can start by representing the monomers as follows:
Succinic acid: HOOCCH2CH2COOH
Ethylenediamine: H2NCH2CH2NH2
In a condensation reaction, the monomers combine through a dehydration synthesis reaction, in which a molecule of water is released as a byproduct. The resulting polymer consists of repeating units of the monomers linked by a covalent bond.
The general chemical equation for a condensation reaction between two monomers can be written as follows:
Monomer 1 + Monomer 2 --> Polymer + byproduct
In this case, the polymer produced by the condensation reaction between succinic acid and ethylenediamine would be a polyamine with repeating units of the monomers linked by a covalent bond. The chemical equation for the formation of this polymer via a condensation reaction would be:
HOOCCH2CH2COOH + H2NCH2CH2NH2 -> Polymer + H2O
It is important to note that the actual structure of the polymer produced in this reaction will depend on the specific conditions of the reaction and the specific monomers involved. The chemical equation provided is a general representation of a condensation reaction between these monomers and does not represent the exact structure of the polymer that would be produced.
To know more about polymer please refer: https://brainly.com/question/8930717
#SPJ4
each drug has chemical and physical properties that must be considered when developing the pharmaceutical formulation, these include:
That the breakdown or dissolution of the drug after administration constitutes the pharmaceutic phase of drug activity, which must occur in medicine composition.
Describe healthcare.
Healthcare can be simply defined as organised medical care provided to an individual, group, or even community by a physician, nurse, or other qualified healthcare practitioner.
However, medically related Patients may contract infections from bacteria, viruses, fungi, and other pathogens while receiving therapy for another ailment.
For this reason, the primary goal of healthcare is to improve quality of life and healthy living through the provision of high-quality healthcare services.
As a result, the nurse is aware that the pharmaceutic phase of drug action, which must occur after administration of the medication, is the drug's breakdown or dissolution.
Learn more about pharmaceutic here:
https://brainly.com/question/16582232
#SPJ4
a compound is a chemical substance with a given set of properties that cannot be broken down into substances with other properties. true false
what is the concentration, in m/v percent, of a solution prepared from 50. g nacl and 2.5 l of water?
The concentration, in m/v percent, of a solution prepared from 50. g nacl and 2.5 l of water is 2 %.
The mass/volume percent is the ratio of a solution's total volume to the mass of the solute that makes up that solution. Since this type of concentration has been expressed as a percentage, the given proportion should be multiplied by 100.
The calculation if concentration is shown as:
It can be calculate as follows:
% NaCl = Mass of NaCl / Total mass × 100 %
% NaCl = 50 gram / 2500 × 100 %
% NaCl = 2 %.
As a result, the solution made from 50 g of nacl and 2.5 l of water will have a 2% concentration.
To know more about concentration
brainly.com/question/10695134
#SPJ4
a radioactive nuclear isotope spontaneously decays with a half-life of 63.3 min. if you begin with a 589 mg sample of that isotope, how much of it will be left after 3.40 hours?
The amount of sample left after 3.40 hours will be 338 mg.
T= Half life x log (m./m)/log(2)
You could use this formula:
Where Th = half-life.
M. = the beginning mount
M = the ending amount
T= 3.40 hours
Half life = 2.4463.3 min
M.= 0.589g
m= ?
Then plug the number into the given equation:
T= 2.4463 x log(0.589 /m)/log(2)
T= 2.4463 x log (0.589/m) /log(2)
T= 2.4463× -0.22/ log m× 0.3
3.4× 60 = 2.4463× log m ×0.3
log m= 3.4× 60/ 2.4463 ×0.3
log m= 279.4
m= 2.511 g = 251mg
So the amount left after the 3.40 hours will be = 589- 251 mg = 338 mg of the sample.
To know more about the isotopes , please refer:
https://brainly.com/question/14220416
#SPJ4
methanol (ch3oh) can be made by the controlled oxidation of methane: ch4(g)+12o2(g)→ch3oh(g)
The standard Gibbs free energy change for the reaction at 25°C is approximately - 111.158 KJ/mol.
To calculate the standard Gibbs free energy (ΔG°) at 25°C for the reaction CH4(g) + 1/2 O2(g) → CH3OH(g), we can use the formula:
ΔG° = ΔH° - TΔS°
where ΔH° is the standard enthalpy change for the reaction, T is the temperature in kelvin, and ΔS° is the standard entropy change for the reaction.
Assigning the respective values given in the question, we have:
ΔG° = (-126.4 kJ/mol) - (298 K)(-51.1 J/mol*K)
= -126.4 kJ/mol - (-15.2418 KJ/mol)
= - 111.158 KJ/mol
Therefore, the standard Gibbs free energy change for the reaction at 25°C is approximately - 111.158 KJ/mol. This value tells us that the reaction is thermodynamically favorable and will tend to occur spontaneously under standard conditions.
To knor more about standard Gibbs free energy click on below link:
https://brainly.com/question/28237924#
#SPJ4
Complete question:
Methanol, CH3OH, can be made by oxidation of methane in limited quantity.
CH4(g) + 1/2 O2(g) CH3OH(g)
ΔH = -126.4
ΔS = -51.1
Calculate ΔG° at 25°C.
what is one possible problem from regenerating a greensand bed by adding a higher dosage of potassium permanganate?
The chemical element KMnO4 is the same as potassium permanganate. Manganese is in the +7 oxidation state in this salt. The salt is also referred to as "potash permanganate." The ion of permanganate is a potent oxidizer.
Another popular technique for treating water to remove sulfur is manganese greensand. It is often advised for water with less hydrogen sulfide than 6.0 mg/l. A unique coating on a manganese greensand filter causes hydrogen sulfide gas to oxidize into solid sulfur particles, which are then filtered. Potassium permanganate is used to rejuvenate the greensand after all of the manganese oxide has been used up. Potassium permanganate is a purple oxidizing chemical that is added to the untreated water to maintain the manganese greensand filter.
To know more about Potassium permanganate please click on the link brainly.com/question/29526566
#SPJ4
a compound contains 27.04% sodium, 16.48% nitrogen and 56.52% oxygen what is the empirical formula of the compound?
NNaO3 is the empirical formula of the compound, a compound contains 27.04% sodium, 16.48% nitrogen and 56.52% oxygen
⇒Find molar mass of each component: N=14.0067, Na=22.98976928, O=15.9994
⇒Convert to moles: N=1.1765797796769, Na=1.1761753530743, O=3.5295073565259
⇒Find smallest mole value: 1.1761753530743
⇒Divide all components by the smallest value: N=1.0003438489011, Na=1, O=3.0008343120781
⇒Round to closest whole numbers: N=1, Na=1, O=3
⇒Combine to get the empirical formula: NNaO3,
The scientific name for nitrogen is N, and it is an element that has no colour nor smell. The ground beneath our feet, the water we drink, and the air we breathe all contain nitrogen. In reality, nitrogen makes up the majority of the atmosphere on Earth, making up around 78% of the atmosphere.
Learn more about empirical formula here:
https://brainly.com/question/11588623
#SPJ4
PLEASE HELP!! DUE SOON ILL GIVE BRAINLIST
A teacher divides her class into groups and assigns each group the task of measuring the length of the same object three times. The teacher already knows that the length of the object is 78.5 mm
based on the results the students record, which group makes the most accurate measurements of the object?
A. Group D: 75.0 mm,75.0 mm, 75.0 mm
B. Group B: 75.5 mm, 75.00 mm, 74.8 mm
C. Group C: 78.5 mm, 72.9 mm, 79.8 mm
D. Group A : 78.5 mm, 77,5 mm, 79.5 mm
There are two terms that are related to measurements, one is accuracy and other is precision. Therefore, Group A makes the most accurate measurements of the object. The correct option is option D.
What is accuracy?The capacity of an instrument to measure an exact number is known as accuracy. In other words, it refers to how closely the measured value resembles a reference or genuine value.
Small readings can be taken to determine accuracy. The modest reading decreases the calculation's inaccuracy. Group A makes the most accurate measurements of the object.
Therefore, Group A makes the most accurate measurements of the object. The correct option is option D.
To learn more about accuracy, here:
https://brainly.com/question/14244630
#SPJ1
copper (63.546 amu) has two isotopes: 63 cu (62.9396 amu) and 65 cu (64.9278 amu). what percent of copper atoms are 65 cu?
Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element. Still, they have different nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.
Along with 27 radioisotopes, copper (29Cu) has two stable isotopes: 63Cu and 65Cu. The radioisotope 67Cu, with a half-life of 61.83 hours, is the most durable; 54Cu, with a half-life of roughly 75 ns, is the least stable. A minute or less is the average half-life.
The percentage of copper atoms in 65 Cu is 25%.
To get a detailed explanation:
https://brainly.com/question/13307464
#SPJ4
The diagram illustrates an experiment where baking soda was
added to a container of vinegar. After five minutes, the balloon on
the top of the bottle started expanding. Explain what happened and
how this experiment demonstrates the Law of Conservation of
Matter.
A reaction between an acid and a base occurs when vinegar and baking soda are combined. Baking soda serves as the base, and vinegar is the acid. A gas known as carbon dioxide bubbles and foams as a result of this reaction between the two. Because there is nowhere else for this gas, it expands the balloon, resulting in the self-inflating balloon.
What happens when vinegar and baking soda are combined in a bottle and a balloon is inserted into the bottle's mouth?SCIENCE: Carbon dioxide is a gas produced when baking soda and vinegar are combined. The gas starts to extend in the jug and begins to expand the inflatable. The balloon will expand in size the more gas produced.
What is the balloon experiment's conclusion?Because their particles travel at high speeds in all directions, gases expand quickly. Since the carbon dioxide gas has nowhere else to go, it begins to fill the balloon as it fills the bottle. The balloon expands as the carbon dioxide gas fills it.
To learn more about carbon dioxide here
https://brainly.com/question/3049557
#SPJ1
Which among the chemicals is NOT an approved sanitizer for kitchen tools
D. Steam
and equipment?
A. Chlorine B. Iodine C. Quaternary ammonium D. Timsen
Which one of the following conditions would always result in an increase in the internal energy of a system? A) The system loses heat and does work on the surroundings. B) The system gains heat and does work or the surroundings. C) The system loses heat and has work done on it by the surroundings. D) The system gains heat and has work done on it by the surroundings. E) None of the above is correct
The system gains heat and has work done on it by the surrounding, this condition would always result in an increase in the internal energy of a system. thus the option D is correct.
When a system is heated or has work done on it by its environment, the internal energy of the system is constantly raised. Energy is an immaterial substance that is concerned with performing work on an item. One of the fundamental conservation rules that holds true throughout the cosmos is the conservation of energy. A type of energy is internal energy. The total kinetic energy of each gas molecule can be considered to be the internal energy U of our system. In other words, when the gas's temperature T rises, its molecules move more quickly and its internal energy U rises.
to know more about internal energy please visit.
https://brainly.com/question/14668303
#SPJ4
Lithium ha two iotope with ma number 6 and 7. If the relative atomic ma of
lithium i 6. 94, determine the percentage abundance of each iotope
The percentage abundance of lithium 6 is 6% and percentage abundance of lithium 7 is 94%.
Relative atomic mass is defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass constant. The atomic mass constant is defined as being 1/12 of the mass of a carbon-12 atom.
R.A.M = (Mass.no ×Abundance) / (Total abundance)
Let the abundance of Li-6 be x
Relative abundance of Li-7 will be 100−x.
6.94 = (6 × x)+ 7(100−x) / 100
6x + 700 – 7x = 694
X = 6%
Li-6 has 6%, Li-7 has 94% because the sum of the percent natural abundances of all the isotopes of any given element must total 100%. atoms that have the same atomic number (number of protons), but different mass numbers that is number of protons and neutrons are called isotopes.
To learn more about Relative atomic mass please visit:
https://brainly.com/question/1594226
#SPJ4
how did the study of the atom contribute to our understanding of the periodic table of the elements?(1 point) responses
The study of the atom contribute to our understanding of the periodic table of the elements by providing information about the structure of the atom and the arrangement of the elements.
What does research into the atom show?This study reveals how the elements are arranged.
Atomic weight (number of protons).Atomic weight (number of protons and neutrons).electron arrangement.Understanding atoms let scientists learn more about the building blocks of elements, which helped organize the periodic table. Scientists were able to organize the periodic table using the atomic weights and atomic numbers obtained from experiments that revealed the properties of individual atoms. Which is a system of categorizing the elements based on their atomic qualities, by comprehending the structure of the atom and the arrangement of the components.
Learn more about the atomic:
brainly.com/question/6258301
#SPJ4
at what temperature in k will 0.950 moles of oxygen gas occupy 7.50 l and exert 2.60 atm of pressure
At 25 K temperature, 0.950 moles of oxygen gas occupy 7.50 l and exert 2.60 atm of pressure.
Ideal gas law will be used to calculate the temperature -
PV = nRT, where Pis pressure, V is volume, n is number of moles, R is gas constant and T is temperature. The value of gas constant to be used in the formula is 0.082 L atm/mol/K
Temperature = (2.60×7.5)/(0.082×0.95)
Performing multiplication in both numerator and denominator on Right Hand Side of the equation
Temperature = 19.5/0.78
Performing division on Right Hand Side of the equation
Temperature = 25 K
Thus, the temperature of oxygen gas is 25 K.
Learn more about ideal gas law -
https://brainly.com/question/25290815
#SPJ4
given a concentrated solution of 50x concentration tae buffer, what volume (in ml) of this concentrated solution would we dilute to have 500ml of 1x tae buffer solution?'
We would dilute 10mL of this concentrated solution to make 500ml of a 1x TAE buffer solution.
Dilution is one of the easiest ways to make buffers. This is only applicable, though, if the working solution, which is the desired solution, has the same pH as the stock solution, which is the readily available, more concentrated solution. The dilution equation is employed in the preparation of buffer by dilution:
[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]
where V refers to volume and C represents concentration. The subscripts 1 and 2 often denote the working solution and stock, respectively. Notably, both sides of the equation must always use the same units for concentration and volume.
From a stock of 50X TAE buffer, make 500mL of 1.0X TAE buffer as follows:
[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]
(50X)V1=(1.0X)(500mL)
∴V1=10mL of 50X TAE Buffer
Calculating the volume of the water-based solvent is also necessary to finish the preparation. The remaining amount of water is needed to make the appropriate amount of working solution, which is 500mL.
[tex]V_{water}[/tex]=500mL−10mL=490mL
As a result, 490mL of water is used to dilute 10mL of 50X TAE Buffer.
To learn more about buffer solutions, refer:-
https://brainly.com/question/15709146
#SPJ4
2. In the equilibrium between carbonic acid, bicarbonate, and carbonate which
molecule(s) are favored at low pH?
There would be more of the bicarbonate ion present in the solution at low pH.
What specie is favored at low pH?We know that the pH has to do with the degree of the acidity of the alkalinity of a given solution. We know that carbonic acid can be able to dissociate in solution via a reversible reaction.
In this case, when the pH is low, we know that there would now be more of the bicarbonate ion as the acid would begin to dissociate so as to counter the constraint of the pH that has been imposed on the system.
Learn more about pH:https://brainly.com/question/15289741
#SPJ1
it takes 16.6 min for a 10.0 ml sample of an unknown as to effuse through a pinhole. a 10.0 ml sample of helium, he, required 5.00 min. what is the molecular weight of the unknown gas?
176.36g is the molecular weight of the unknown gas
At equal volumes, t2/t1= √M2 / √M1
Let the molecular mass of the unknown gas be x
16.6/5 = √x /4
√x = 16.4 × 4 / 5 = 13.28
x = 13.28*13.28
x = 176.36g
The entire mass of the atoms required to form a molecule per mole, expressed in grams, is what makes up the molar mass, also known as the molecular weight. Grams per mole are used to measure molar mass. The mass of 1 mole of a material, expressed in M grams, is its molecular weight, also known as its molar mass, abbreviated M. The mass of a given substance's molecules is its molecular weight. While molar mass and molecular weight have distinct definitions and measurement systems, their values are equivalent.
learn more about molecular weight/ mass here:
https://brainly.com/question/24727597
#SPJ4
if you are bombarded with 1.00 mol of photons with a wavelength of 390. nm, what amount of energy, in kilojoules per mole of photons, are you being subjected to?
The amount of energy required is 319kJ mol ⁻¹.
Wavelength is the distance between identical points in adjacent cycles of a waveform signal propagating in space or along a wire. In wireless systems, this length is usually expressed in meters, centimeters, or millimeters. Wavelength is the distance between two wave crests and the same for wave troughs.
Wavelength can be defined as the distance between two consecutive peaks or valleys. Measured in the direction of the wave. Wavelength is the distance between two wave crests and the same for wave troughs. Frequency is the number of oscillations that pass through a particular point in one second, measured in cycles per second.
Learn more about Wavelength here:- https://brainly.com/question/10728818
#SPJ4
an aqueous solution at has a h30 concentration of . calculate the concentration. be sure your answer has the correct number of significant digits
H3O+ is present in aqueous solutions with a concentration of 8.8 1012 M at 25 °C. Determine the amount of OH present. Please include significant digits in your response. OH ([OH]) concentration: Take water's ability to ionize itself as an example. 2 H2O(aq), H3O+(aq), and OH (aq)
Kw = [H3O+] [OH] = 1.0 1014 [OH] = 1.0 1014 / [H3O+][OH] = 1.0 1014 / 8.8 1012 [OH] = 1.1 103 M is the equilibrium constant for this reaction.
How much H3O+ is present in water?In pure water, there are 10-6mol dm-3 H3O + ions present.
How is the pH of a solution determined using H3O?The hydronium ion concentration in moles per liter must be known in order to compute the pH of an aqueous solution (molarity). After that, the pH is determined using the formula pH = - log [H3O+].
To know more about aqueous solution visit :-
https://brainly.com/question/26856926
#SPJ4
What volume will 3.21 moles of oxygen gas occupy at stp
Answer:
71.9 L
Explanation:
PV = nRT
STP means 273K and 1.00 atm
(1.00 atm)(V) = (3.21 mol)(0.08206 L*atm/mol*K)(273K)
V = 71.9 L
which of the following is not a ligand to the porphyrin ring fe(ii) ion in oxymyoglobin?
His E7 isn't a ligand for the porphyrin ring (Fe(II)) ion in oxymyoglobin.
In the porphyrin ring, four pyrrole nitrogens are bound to the a ferrous (Fe(II)) ion centre. The Fe(II) ion does have six coordination sites, four of which are inhabited by pyrrole nitrogen, one by proximal histidine, and the final site can form a reversible bond with an O2 molecule.
A porphyrin is a large ring molecule composed of four pyrroles, which are smaller rings with four carbons and one nitrogen. A series of single and double bonds connect these pyrrole molecules, causing the formation of a large ring. The technical term for four pyrroles linked together is tetrapyrrole. The ring is flat in space and has a fairly even electron distribution around in its circumference.
A porphyrin is thus categorized as an aromatic compound. This demonstrates how stable a porphyrin molecule is. Porphin is the general porphyrin model. This molecule appears as just an intermediate in nature only on rare occasions, but it serves as the foundation for all porphyrin molecules.
To know more about the Porphyrin ring, here
https://brainly.com/question/13057807
#SPJ4
which of the following geometries for the complex ion [co(en)(h2o)4]2+ are possible?
Octahedral type of molecular geometries are possible for the complex ion [Co(en)(H2O)4]2+.
In chemistry, an octahedral molecular geometry (also called a square bipyramid) is a compound with six atoms or groups of atoms or ligands arranged symmetrically around a central atom and defining the vertices of the octahedron represents the shape of The octahedron has eight faces, so the prefix is okta. The octahedral shape is characterized by Octahedral bond angle values of 90° and 180° define the octahedral shape. The angles between the four atoms forming the square bases of the two pyramids of the octahedral structure are 90°, as is the angle between each of these atoms and one of the apex atoms.
For more information on Molecular geometries , visit :
https://brainly.com/question/19557384
#SPJ4
Complete question :
Which of the following geometries for the complex ion [Co(en)(H2O)4]2+ are possible?
Check all that apply
trigonal bipyramidal or square pyramidal
octahedral
linear
tetrahedral or square planar
trigonal planar
consider two different isotopes of the same neutral element. which statements about these isotopes are true? (there may be more than one correct choice.)
The number of protons in each isotopes is the same. Because both isotopes have the same amount of orbital electrons, the claims made about them are accurate.
What does an element mean?An element is a basic thing that is difficult to divide into smaller parts. A material that cannot be broken down by non-nuclear processes is referred to as an element in chemistry and physics. An element is a unique component of a bigger system or set in computers and mathematics.
What makes anything an element?Any material that cannot be broken down into simpler compounds by regular chemical processes is a chemical element, often known as an element.
To know more about Elements visit:
https://brainly.com/question/13025901
#SPJ4
a paricular vitamin's chemical formula has one colat atom. what is the molar mass of the vitamin if it conatain 4.34% cobalt
You can use the molecular mass of Co with its percentage composition to discover the molar mass of cyanocobalamin is 59.903g.
Atomic mass Co = 58.901 amuPercent cobalt with the aid of using mass = 4.34%To discover the molar mass of 1 percentage of the molecule, divide the atomic mass of Co with the aid of using its percentage of general composition.1 percentage of cyancobalmin = 58.901 amu / 4.34% = 13.5715 amuSo now multiply this with the aid of using 100%1357.15 amuThe molar mass of cyanocobalmin is 1357.15 g/molCheck 4.34 percentage of 1357.15 is 59.903 .Read more about atom:
https://brainly.com/question/621740
#SPJ4
8) the above molecule is composed of/contains ? a) riboflavin b) deoxyribose c) phosphodiester bonds d) a and c only e) a and b only
The correct option is e)t a and b only. Riboflavin and deoxyribose are both components of the molecule, while phosphodiester bonds link the two together.
What is molecule?Molecule is a group of two or more atoms held together by covalent bonds. The atoms that make up a molecule can be from the same element, such as two hydrogen atoms, or from different elements, such as a hydrogen atom and an oxygen atom. Molecules can be as small as two atoms or as large as thousands of atoms. The properties of a molecule depend on how the atoms are arranged and the type of bonds that are formed.
Riboflavin is a B vitamin found in foods such as milk, eggs, and green vegetables, while deoxyribose is a five-carbon sugar that forms the backbone of DNA. Phosphodiester bonds are covalent chemical bonds which link the two components of the molecule together.
To know more about molecules click-
https://brainly.com/question/475709
#SPJ4
in the laboratory you are asked to make a 0.643 m nickel(ii) iodide solution using 355 grams of water. how many grams of nickel(ii) iodide should you add
The amount of nickel(ii) iodide that should be added for making the solution is 71.3 kilograms.
As the molality and weight of water is given, we will use the formula of molality to find the mass of nickel(ii) iodide.
Molality = number of moles of nickel(ii) iodide/weight of solvent in kilograms
Number of moles = mass/molar mass
Molar mass = 312.5 grams
Keep the values -
0.643 = moles/355
Moles = 228.3
Mass = 228.3 × 312.5
Performing multiplication on Right Hand Side of the equation
Mass = 71,332.8 grams
Mass = 71.3 kilograms
Learn more about molality -
https://brainly.com/question/24065939
#SPJ4