0.389×10^−19J is the change in energy for the combination of these processes.
λ1=410nm=410×10^−9m
λ2=2628nm=2628×10^−9m
E1−E2 = Energy absorbed by the atom in the process =hc[1/λ1−1/λ2]
=6.63×3[1/410−1/2628]×10^−9 = 0.389×10^−19J
We get, 0.389×10^−19J.
Energy is the quantitative property that is transferred to a body or to a bodily system, recognizable in the performance of work and in the structure of warmth and light. Energy is a conserved quantity—the regulation of conservation of energy states that strength can be transformed in form, however not created or destroyed. The unit of size for energy in the International System of Units (SI) is the joule (J).
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When the ____________ group of fatty acids reacts in a dehydration synthesis reaction with the ____________ group of glycerol, fats or oils are formed.
When the carboxyl group of fatty acids reacts in a dehydration synthesis reaction with the hydroxide group of glycerol, fats, or oils are formed.
Fats and oils are made up of fatty acids and glycerol.
A fatty acid has a carboxyl group attached to a long chain of carbon atoms.
Based on the presence or absence of double bonds, fatty acids are of two types, saturated (without double bond) or unsaturated (with one or more C=C double bonds), as shown in the adjoining diagram.
Glycerol is chemically trihydroxy propane. It has three hydroxyl groups.
When the carboxylic group of fatty reacts in a dehydration synthesis reaction with the hydroxyl group of glycerol, fats or oils are formed. When these groups react, an ester bond is formed.
This reaction is illustrated in the adjoining diagram.
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What are the approximate temperatures for southern great britain and northern newfoundland (white arrows)?
High temperature: 58 °F
Low Temperature: 43 °F
50 °F is the average temperature.
Precipitation: 3.12"
79% humidity
44 °F Dew Point
Wind speed: 9 mph
29.96 mmHg pressure "Hg
12-mile visibility
The average summer temperature on the island of Newfoundland is 16°C (61°F), while the winter temperature is around 0°C (32°F). The winter climate in Labrador is somewhat harsher, but temperatures can reach 25°C (77°F) during the short but pleasant summers.Southern Great BritainGreat Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. It is the largest of the British Isles, the largest European island, and the ninth-largest island in the world, with a total area of 209,331 km (80,823 sq mi). It is characterized by a maritime climate with a narrow temperature range.
Northern NewfoundlandNorthern Bay has about 290 permanent residents and is located on Route 70 between the neighboring communities of Gull Island and Ochre Pit Cove. It stretches from the "south side" of Northern Bay, where the beach is, to what was once known as the "Lower Rooms."
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A new element was discovered on the planet zeb ii. it was named zebnium, and given the symbol zb. if the formula for the zebnate ion is zbo43-, what would be the formula for the zebnite ion?
A new element was discovered on the planet zeb ii. The name of the element zebnium, and the symbol of the element, is zb. The formula for the zebnite ion is ZbO³⁻₃.
What is an element?Chemical elements are a substance that is present in the free form or mixed form in the earth's crust. They are represented in the periodic table.
The ion is the charged form of the element. So it will contain a negative or positive sign in with the charge in the compound.
Thus, if the formula for the zebnate ion is zbo43-, The formula for the zebnite ion is ZbO³⁻₃.
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Earth is made mostly of metals and rocks. where did the elements (carbon, silicon, iron, etc.) that make up these materials form?
Earth is made mostly of metals and rocks. the elements (carbon, silicon, iron, etc.) that make up these materials form, and they were produced by nuclear fusion in stars.
Metals are materials that, when freshly worked, polished, or crushed, have a lustrous appearance and are relatively good conductors of electricity and heat. Metals are typically ductile and malleable. These properties are the result of metallic bonding between the atoms or molecules of the metal.
Metal is very useful material. Metals have many properties such as B. Strength, toughness, and stiffness. When heated, the metal can be shaped into anything from tiny paper clips to giant airplanes. It is also an excellent conductor of electricity and heat, making it useful for electricity and cooking pots.
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Bubbling during a chemical reaction is an indicator that a ______
I has been produce
Answer: gas
Explanation:
why is lightning categorized as plasma? A. It consists of tightly packed particles B. it has a definite volume. C. it has no definite shape D. it has extremely high levels of energy
Lightning is categorized as plasma because it has extremely high levels of energy.
When the electrons are freed from their host atoms for a short time, due to high temperatures, it is plasma. An electrical discharge consisting of moving electrons and ions, is lightning. Lightning strikes create plasma via a very strong jolt of electricity.
By the passage of electricity through a gas, the plasma was created. An electrical discharge through air and it ionizes the atoms when this happens. The electrons from the atoms strips and leaves positively charged ions in the gas, is lightning.
Lightning as an example of plasma present at Earth's surface. Plasma temperatures approaches 30000 K and electron densities may exceed 10²⁴ m−³.
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Solid calcium carbide, cac2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, c2h2
Solid calcium carbide, cac2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, c2h2
CaC2(s)+2H2O(l)→Ca(OH)2(aq)+C2H2(g)
A solution is a homogeneous mixture of two or more components with particle sizes less than 1 nm. Common examples of solutions are the sugar in water and salt in water, soda water, etc. All components appear as one phase in the solution.
Examples of solutions include salt water, rubbing alcohol, and sugar dissolved in water. If you mix salt and water and look closely, you will not see any salt particles and you will have a homogeneous mixture.
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Which of the following correctly describes an oxidation-reduction reaction?
A.The element that is oxidized increases in electronegativity, and the element that is reduced decreases in electronegativity.
B.The element that is oxidized decreases in electronegativity, and the element that is reduced increases in electronegativity.
C.The element that is oxidized loses electrons, and the element that is reduced gains electrons.
D.The element that is oxidized gains electrons, and the element that is reduced loses electrons.
Answer:
C. The element that is oxidized loses electrons, and the element that is reduced gains electrons.
Explanation:
When an element is oxidized, it loses electrons. But when an element is reduced, it gains electrons. However, an oxidizing agent oxidizes something else, and gets reduced, therefore gaining electrons
The proper process(es) for disposing of liquid waste containing hazardous material could be?
Wastewater, another name for liquid waste, has a very diverse composition that primarily depends on its source. Residential, commercial, and industrial regions are the three primary sources in towns and cities.
What are liquid wastes?
Wastewater, fats, oils, or grease (FOG), used motor oil, liquids, solids, gases, or sludges are all examples of liquids that are considered to be hazardous household liquids. These liquids could be dangerous or damaging to the environment or human health. They can also be commercial products that have been labeled "Liquid Industrial Waste," such as cleaning agents or pesticides, or leftovers from production. The generation, storage, transport, treatment, and disposal of hazardous and liquid wastes are subject to special laws in addition to the standard waste regulations.Wastewater, another name for liquid waste, has a very diverse composition that primarily depends on its source. Residential, commercial, and industrial regions are the three primary sources in towns and cities.To know more about hazardous wastes, refer:
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The hydrogens and oxygen of a water molecule are held together by ______ bonds. select all that apply.
The hydrogens and oxygen of a water molecule are held together by covalent bonds.
What are covalent bonds?A covalent bond is an electron exchange that causes the production of electron pairs between atoms. Covalent bonding is a stable equilibrium of the attractive and repulsive forces between two atoms that occurs when they share electrons.
Bonding pairs or sharing pairs are other names for these electron pairs. Because electrons are shared among several molecules, each atom can reach the equivalent of a full valence shell, resulting in a stable electronic state.
In organic chemistry, covalent bonds are much more common than ionic bonds. Covalent bonds unite the atoms in a single water molecule, whereas hydrogen bonds join two water molecules. Water develops a covalent bond when oxygen shares an electron with each hydrogen atom.
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A solution of iron (III) chloride has a density of 1.118 g/mL. What volume of solution would have a mass of 1.75 kg?
The volume of a solution of iron (III) chloride is 1565.29 mL when it has a density of 1.118 g/mL and a mass of 1.75 kg.
What is Density?Density may be defined as a type of physical property that significantly deals with the description of how much space an object or substance takes up with respect to the amount of matter in that object or substance.
In a more simple sense, it is characterized as the measurement of quantity or mass per unit of volume in a particular substance.
According to the question,
The density of iron chloride solution = 1.118 g/mL.
The mass of iron chloride solution = 1.75 kg.= 1750 g.
The formula for calculating the density is as follows:
Density = mass/volumeVolume = mass/density.Volume = 1750 g/1.118g/mL = 1565.29 mL.
Therefore, the volume of a solution of iron (III) chloride is 1565.29 mL when it has a density of 1.118 g/mL and a mass of 1.75 kg.
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Suppose that the gene for a protein 500 amino acids in length undergoes a mutation. if the mutation causes the synthesis of a mutant protein in which just one of the 500 amino acids is:__________
Suppose that the gene for a protein 500 amino acids in length undergoes a mutation. If the mutation causes the synthesis of a mutant protein in which just one of the 500 amino acids is incorrect.
What is mutation?
The mutation is a condition in which there are changes in the DNA and gene. These changes are due to genetic mutation and other bio factors and radiation.
The protein may be folded incorrectly. And the protein will not attain its old structure. Because denature is an irreversible process and does not get the structure of its before.
Thus, the statement is incorrect.
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Which compound would be most easily formulated as an aqueous solution used to quickly provide energy to an athlete?
The compound would be most easily formulated as an aqueous solution used to quickly provide energy to an athlete is carbohydrate.
carbohydrate strategy is used for athletes to maximize the storage of energy , in form of glycogen, in muscles. simple carbohydrates are simple sugar such as fructose and glucose.Every athletes anywhere should consume 3 - 12 gm per kilo weight throughout the day, depending on their training routine.
Carbohydrates provide energy for the body including muscles , brain, nerves and other tissues present in body.thus, carbohydrates acts a master fuel in body.
carbohydrates are used for energy (glucose). athlete drinks contain carbohydrates ans electrolytes.
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In the mass spectrum of pentane, the presence of a peak with an m/z = 57 most likely is due to the loss of what radical from the molecule?
In the mass spectrum of pentane, the presence of a peak with an m/z = 57 most likely is due to the loss of methyl radical.
The electromagnetic spectrum is the gamut of electromagnetic radiation's frequencies, together with the corresponding wavelengths and photon energies. Electromagnetic waves having frequencies between 1 hertz and 1025 hertz are included in the electromagnetic spectrum. This translates to wavelengths that range from several hundreds of kilometers to only a small portion of an atomic nucleus in size.
Each of the bands that make up this frequency range has a unique name for the electromagnetic spectrum that it contains. The electromagnetic spectrum is made up of radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, starting at the low frequency (long wavelength) end and ending at the high frequency (short wavelength) end.
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Amino acids are built around a central ____________ atom bonded to a ____________ atom and three other groups of atoms.
Amino acids are built around a central Carbon atom bonded to a Hydrogen atom and three other groups of atoms.
Amino acids are molecules that are joined together in chains that combine to form proteins, and when these proteins are digested or broken down, the amino acids are used up.
Amino acids and proteins are essential for all living things, from microbes to humans. They make up approximately 50% of our solid body mass; they are the next largest component of our body after water.
They are classified into three groups:
Essential amino acidsNon-essential amino acidsConditional amino acidsWhat is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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The molecules in a sample of solid so2 are attracted to each other by a combination of?
The molecules in a sample of solid so2 are attracted to each other by a combination of London forces and dipole-dipole interactions.
What are London forces?Other names for London dispersion forces include dispersion forces, London forces, fluctuation induced dipole bonds, instantaneous dipole-induced dipole forces, and weakly van der Waals forces. Since the electrons are often arranged symmetrically with regard to the nucleus, they serve as a form of electrically symmetric force between atoms and molecules.
What are dipole dipole interactions?Dipole-dipole interactions, which result from the close association of induced or permanent dipoles, are weak interactions. Van der Waals interactions are the name given to these forces taken as a whole. These interactions are widespread in proteins and range widely in strength.
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N the secondary structure of a protein, what bonds, other than peptide bonds, are formed?
In secondary structure of a protein, other than peptide bonds, hydrogen bond are formed.
The secondary structure contains regions of amino acid chains that are stabilized by hydrogen bonds from the polypeptide backbone. arrangement of hydrogen bonds between the peptide it is an arrangement nitrogen's and the peptide carbonyl oxygens of different amino acid residues. the most common types of secondary structures are the α helix and the β pleated sheet. both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.
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Describe how plants promote mechanical and chemical weathering but inhibit erosion.
Rocks are wedged apart by plant roots that grow through fissures in quest of water and minerals. Additionally, some fungus, lichens, and plants create acids and other substances that help the chemical weathering of earth minerals. Root systems restrain by adhering to and stabilizing rocks and soils.
How do plants promote mechanical and chemical weathering?
Chemical and mechanical weathering can be brought on by plants. Plants' roots penetrate rocks and cause them to fracture as a result of mechanical weathering. It may also occur on sidewalks or in streets. Plants produce chemical weathering by releasing acids or other chemicals through their roots onto rocks, causing the rocks to fracture and develop fissures.Chemical weathering is also brought on by animals and plants. Plant roots draw components from the minerals as they absorb nutrition. The rock undergoes a chemical alteration as a result.
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For every 1.0 mole of glycine in the sample, how many molecules of methionine are present?
1.08 x 10²¹ molecules of methionine are present for every 1.0 mole of glycine in the sample.
Given data -
Glycine in the sample = 1.0 mole
Avogadro's number = 1.8 x 10⁻³ moles (we know)
To find the number of molecules of methionine , multiply the molar ratio by the Avogadro's number.
Number of molecules = Avogadro's number x molar ratio
= (1.8 x 10⁻³ moles) x (6.02 x 10²³ molecules/mole)
= 1.08 x 10²¹
Methionine is an essential amino acids for human. For the growth of new blood vessels and for he supplementation, it is an important amino acid. Too much methionine reslts in the damage to the brain and might be fatal.
Glycine is also an amino acid which has only one single hydrogen as its side chain. It is used in the treatment of some rare metabolic disorders and schizoprenia, stroke, etc.
Glycine is responsible to reduce the levels of methionine in the blood. Glycine is considered a precursor for many necessary metabolites such as purines, glutathione, creatinine and porphyrins. It acts as a neurotransmitter in CNS.
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What type of bonds occurs between neighboring amino acids in a secondary structure in creating alpha helices and beta pleats?.
Hydrogen bonds occur between neighboring amino acids in a secondary structure in creating alpha helices and beta pleats.
Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.
Protein is composed of amino acid linked with peptide bond, secundary structure can be α-helices and beta pleated sheet.
In a beta-pleated sheet, hydrogen bonds are formed between carbonyl and amino groups of backbone.
Fluorine atom has greater electronegativity than oxygen atom in carbony group, so the hydrogen bond with hydrogen atom is shorter and strands are closer.
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If you separated a gypsum stone cast from an alginate impression beyond the optimum time interval, you could expect the cast to be?
The 12-hour time of contact between alginate and therefore the plaster cast is not recommended because it influences the quality of the plaster cast
What is gypsum cast?Gypsum may be a resource that is found by doing a variety of activities. Gypsum are often crafted into Gypsum Orbs, which may then be turned into special caches is called Gypsum Casts. Gypsum Casts are gear type specific, and when opened, guarantee an Expertise bump for that sort of gear as well as an item of that type.
Is gypsum utilized in cast?Gypsum products are one among the most broadly utilized dental materials for fabrication of dental casts and dies which are used as for further construction of indirect dental restorations
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O Macmillan Learning
A hydrate of cobalt(II) chloride had a mass of 238.0 g before heating. After heating, the anhydrous CoC1, weighed 130.7 g.
What is the mass of the water that was removed by heating?
mass of the water =
How many moles of water were removed by heating?
moles of the water =
How many moles of anhydrous CoCl, remain?
moles of CoCl₂ =
What is the hydration number (moles of water per mole of compound)?
hydration number=
mol
mol
A hydrate of cobalt(II) chloride had a mass of 238.0 g before heating. After heating, the anhydrous CoC1, weighed 130.7 g.
from above statement, we found that,
before heating cobalt(II) chloride = 238.0g
Mass of hydrated cobalt(II) chloride After heating = 130.7 g
Mass of water = (1238.0 - 130.7) g = 107.39g
moles H2O = 107.39× 1 mole H2O÷18g H2O
= 5.96 mol H2O.
moles of anhydrous CoCl, remain = given mass of CoCl÷ molar mass of CoCl
=130÷94.5
= 1.375 mole
moles of CoCl₂ = given mass of CoCl₂÷ molar mass of CoCl₂
= 130÷ 130
= 1 mole.
hydration number = moles of water÷ mole of compound
= 5.96 mol÷ 1
= 5.96 hydration number
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What type of bond forms when the sulfur atoms in two adjacent protein chains are joined together?what type of bond forms when the sulfur atoms in two adjacent protein chains are joined together?
Disulfide bond forms when the sulfur atoms in two adjacent protein chains are joined together.
What kinds of side bonds are there in proteins?When the sulfur atoms in two adjacent protein chains come together, strong chemical side bonds form. Weak physical side bonds are caused by the attraction of opposite electrical charges. Polypeptide chains that are coiled. Chemical bonds that connect amino acids end to end in long chains.
How do peptides join together to form proteins?These peptide subunits can form complex structures by bonding with other peptides. Chemical bonds of various types hold proteins together and bind them to other molecules. Examine the chemical bonds that are responsible for protein structure. A protein's primary structure is made up of amino acids linked together in a chain.
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A 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically from a pressure of 5.01 atm and a volume of 12.5 l to a final volume of 29.3 l. (a) what is the final pressure of the gas?
By ideal gas approximation, the final pressure is 2.14 atm.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
V1 = 12.5 L
V2 = 29.3 L
P1 = 5.01 atm
When the initial and final temperature is the same, we can use the ratio of pressure and volume as
P1 . V1 = P2 . V2
5.01 . 12.5 = P2 . 29.3
P2 = 2.14 atm
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An element that has the electron configuration 1s22s22p 4 has how many electrons?
Electrons ruminate around the nucleus in particular circular path known as orbit called shell.
Electronic configuration is the dispense of electrons.
Electronic configuration is also known as electronic structure.
Also termed as spatial methodize.
More than one orbital in the electron shell is known as subshell, they have similar energy level.
In Electronic configuration there are four shell present namely k,l,m,n and there are 4 sub-shell namely s,p,d,f.
As we know that every subshell fills gradually s max 2 electrons p - 6 , d - 10 and f - 14.
So,
According to questions,
Thge element has configuration 1s2 2s2 2p4 hence 8 electrons.
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Which type of bond exemplifies a weak chemical bond? covalent bonds in solution hydrogen bonds in solution ionic bonds in solids nonpolar covalent bonds in solids
Covalent bonds in solution, hydrogen bonds in solution, ionic bonds in solids, nonpolar covalent bonds in solids- the weakest bond is hydrogen bond.
What is a chemical bond?
A chemical bond is a strong bond that can be formed between atoms, ions, or molecules to create chemical compounds. In covalent bonds, the electrons are shared, whereas in ionic bonds, the electrostatic attraction of two ions with opposing charges forms the link. Strong bonds, also known as primary bonds, include covalent, ionic, and metallic ties. Weak bonds, also known as secondary bonds, include dipole-dipole interactions, the London dispersion force, and hydrogen bonds.
Since there is no necessity for an electron exchange during formation, the hydrogen bond is weak. As a result, it is simpler to break apart a hydrogen connection between two molecules.
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What is the atomic number of mercury
Answer:
Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum
Source: Wikipedia
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how are wavelength, frequency and energy related in an electromagnetic wave?
There are actually two models of electromagnetic radiation. One is the wave model, of course, and the other is the particle model, which postulates that radiation is made up of a stream of discretely sized particles called light quanta.
Different ideas about the energy connected to radiation are produced by the two theories.
The energy is stored in the EM fields that are moving through a region when the radiation is thought of in the wave model as an EM wave.
The wave oscillations in the wave model hold the energy.
Conceptually, the particle model differs slightly. Since each discrete particle in radiation has a specific amount of energy, the total energy of the radiant beam is determined by the number of discrete particles that make up the radiation.
In this scenario, the energy of each quantum is denoted by the formula E = h v, where h is Planck's constant.
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How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons and protons?
About a century ago, in 1911, Rutherford discovered the atomic nucleus, then in 1919, he witnessed the proton.
For a long time, people believed that Atom was the final particle and the building block of every other component in the universe. However, in the year 1911, Rutherford's atomic model depicting the presence of nucleus shattered the argument that atom is the ultimate unbreakable particle.
Rutherford's experiment also approved that there must be more than just protons in the nucleus. For example, it was previously known that helium had an atomic number of 2, but a mass number of 4.
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A student in chm 11500 lab measured a 10. 00-ml sample of deionized water into a pre-weighed erlenmeyer flask using a 50-ml buret and recorded the mass as 9. 95 g. The temperature of the sample was 24 °c. The percent error in the volume measurement was __________________.
The percent error in the volume measurement was 0.238 %.
d(water) = 0.99738 g/ml; density of the water at 24°C
V(water) = 10.00 m; volume of the water sample
m(water) = d(water) × V(water)
m(water) = 0.99738 g/ml × 10.00 ml
m(water) = 9.9738 g; mass of the water sample
error = (9.9738 g - 9.95 g) ÷ 9.9738 g · 100%
error = 0.238 %
The percent error is an error between an observed value and the true value of a measurement.
In this problem, an observed value is 9.95 grams and the true value of a measurement is 9.9738 grams.
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