In order from most basic to most acidic:
0.0023 M HCl
pH = 5.45 and pOH = 8.55
0.0018 M KOH
What is acidity of solution?The hydrogen ion concentration of a solution, which is a measure of its acidity, determines the solution's pH. Pure water slightly separates into ions of hydrogen and hydroxyl (OH) in equal amounts. A substance's acid content is described. A chemical called an acid reacts with specific metals to create salts by releasing hydrogen ions into the water. Acidity is measured on a pH scale. A pH value between 7 and 0 denotes increasing acidity, while a pH value between 7 and 7 denotes neutrality.
Here,
Options are
pOH = 8.55
pH= 5.45
0.0023 M HCl
0.0018 M KOH
For pOH = 8.55
use equation A
pH + 8.55 = 14
pH = 5.45
For pH = 5.45
pH = 5.45
For 0.0023 M HCl
pH = - log (Molarity)
pH = - log (0.0023)
pH = - (-2.64)
pH = 2.64
For 0.0018 M KOH
pOH = - log (Molarity)
pOH = - log (0.0018)
pOH = 2.74
pH + 2.74 = 14
pH = 11.26
From the most basic to the acidic, in order:
0.0023 M HCl
pH = 5.45 and pOH = 8.55
0.0018 M KOH
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g in the beta oxidation pathway, when the starting fatty acid contains n carbons, what is the product of the enzyme acyl-coa synthetase? assume the starting saturated fatty acid contains n carbons and n is an even number.
Acyl-CoA synthetase is an enzyme that catalyzes the formation of acyl-CoA from a fatty acid and coenzyme A.
What is synthetase?Synthetase is an enzyme that catalyzes the formation of a covalent bond between two molecules. It is a type of transferase enzyme that works by transferring a specific functional group from a donor molecule to an acceptor molecule, thus creating a new chemical bond. Synthetase enzymes are responsible for the synthesis of various molecules, such as proteins, carbohydrates, nucleotides, lipids, and peptides.
The product of this reaction is an acyl-CoA molecule which contains n-2 carbons (where n is the number of carbons in the starting fatty acid). This acyl-CoA is then ready to enter the beta oxidation pathway, which breaks down the fatty acid into two-carbon molecules.
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write a balanced equation for this reaction: oxygen reacts with hydrogen to yield water
Answer:
Perfecto
Explanation:
2H2 + O2 -> 2H2O
1 mol of ethanol C₂H6O is oxidized by potassium permanganate solution which is acidified with sulphuric acid, forming ethanoic acid C₂H₂O₂, the percentage of the actual yield is 60% What is the mass of ethanoic acid which can be actually collected from the oxidation of 2.3 g of ethanol ? [C= 12, H = 1, O=16]
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 2.94g is the mass of ethanoic acid which can be actually collected from the oxidation of 2.3 g of ethanol .
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
C₂H₂O + K[tex]_2[/tex]Cr[tex]_2[/tex]O[tex]_7[/tex] [tex]\rightarrow[/tex] C₂H₂O₂+water
mole of ethanol= 2.3 g/ 46.07
=0.049 moles
mole ratio between ethanol and ethanoic acid is 1:1
mass of ethanoic acid= 0.049×60.05g/mol
=2.94g
Therefore, 2.94g is the mass of ethanoic acid which can be actually collected from the oxidation of 2.3 g of ethanol .
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2.00 L of 1.0 M NaCl solution is prepared in a flask. 400.0 mL of the solution is poured out of the flask into a beaker. What is the concentration of the salt solution in the beaker? Give your answer to two significant figures.
Answer:
Explanation:
The concentration of the salt solution in the beaker is 0.50 M.
When adding acid to base the phenolphthalein indicator changes Colour from Colourless to pink at the end of titration?
Because it is colorless by nature, phenolphthalein functions differently from litmus paper. In an alkaline solution or base, it also turns pink.
In addition, the substance is colorless in acids but turns pink at pH 8.2 and brilliant purple when exposed to strong bases. The mechanism that results in the compound's color shift is ionization (Phenolphthalein). Additionally, when a molecule loses or gains an electron, ionization takes place, giving the molecule a positive or negative charge.
Additionally, the ionized molecule repels the same charge and attracts the opposite change. Additionally, it has an impact on molecular form. Additionally, the charge affects how it will respond to light.
Normally, the Phenolphthalein solution appears colorless because it allows all hues of light to pass through it. However, as it is exposed to alkaline, it begins to obstruct the blue portion of the light spectrum, turning the light pink. Additionally, more phenolphthalein molecules will transform and result in a deeper color the stronger the alkaline solution.
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Listen to the audio and then choose the option that answers the question. What could be added after this audio
The audio simply implies that there are several stops before he reaches his final destination. so, Option A is the correct answer.
Audio is sound that is within the acoustic range of human hearing, and It is the audible portion of the spectrum of sound frequencies, distinct from inaudible sounds heard by certain animals or used in science and medicine.
Uses of Audio in daily life:
Audio defines any sound or noise in a range the human ear can hear. An audio signal is measured in hertz and on a computer is generated using a sound card and is heard through speakers or headphones.
In this case, the audio simply implies that there are several stops before he reaches his final destination.
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what could be a cause for your observation in the previous question? hint: think about what must happen for a chemical reaction to occur on an atomic level.
The cause of the observation is likely an activation energy barrier. A chemical reaction requires a certain amount of energy, called the activation energy, to occur.
What is reaction?A response or action that is made in reaction to a stimulus is referred to as a reaction. Reactions can be physical, chemical, or psychological. Physical reactions include movements, such as reflexes, and involve the body’s muscles, nerves, and other tissues. Chemical reactions involve the transformation of matter from one form to another and can be used to create new substances or break down existing ones. Psychological reactions involve emotions, thoughts, and behavior, and are often the result of a person’s response to an event or situation. All reactions involve changes in the environment of the individual or group and can involve both positive and negative responses.
If the activation energy barrier is too high, the reaction may not occur or occur at a very slow rate.
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given that the values of the formation constants are large, what can you deduce about the equilibrium concentration of cu(nh3)4 21 versus the equilibrium concentration of cu21?
If the formation constants of a complex are large, it means that the complex is more stable than the individual species and therefore, the equilibrium concentration of the complex will be greater than the equilibrium concentration of the individual species.
In the case of Cu(NH3)4^2+ versus Cu^2+ The large value of the formation constant for Cu(NH3)4^2+ suggests that it is more stable than Cu^2+ and the equilibrium concentration of Cu(NH3)4^2+ will be greater than the equilibrium concentration of Cu^2+.It should be noted that large formation constants also indicate that the complex is more difficult to dissociate, and more energy is required to do so.
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Can you explain what the boundaries are (6th grade science)
Answer:
Personal boundaries or the act of setting boundaries is a life skill that has been popularized by self help authors and support groups since the mid 1980s. It is the practice of openly communicating and asserting personal values as way to preserve and protect against having them compromised or violated.
monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
Giant macromolecules known as nucleic acids are composed of nucleotide monomers. Pentose sugar, phosphate group, and nitrogenous base are the three elements that make up nucleotides.
Is DNA or RNA made of phosphate sugar and bases?The nucleotides in a DNA sequence are joined by an alternating grey-dark grey sugar-phosphate backbone. The structural structure of nucleic acids, including DNA and RNA, is composed of the sugar-phosphate backbone. This molecule's directionality is determined by this backbone, which is made up of alternating sugar and phosphate groups.
What are the bases and sugars in RNA?However, RNA is often a single-stranded molecule, unlike DNA. Additionally, the name of the molecule is explained by the fact that ribose, rather than deoxyribose, is the sugar present in RNA. The four nitrogenous bases that make up RNA are adenine, cytosine, uracil and guanine.
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The complete question is: What are monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base called?
Rank these systems in order of decreasing entropy.
Rank from highest to lowest entropy. To rank items as equivalent, overlap them.
1 mol of
oxygen gas at
273 K and 40 L
1/2 mol of
xenon gas at
100 K and 20 L
1 mol of
xenon gas at
273 K and 20 L
1/2 mol of
liquid xenon
at 100 K
1 mol of
xenon gas at
273 K and 40 L
1 mol of
carbon tetrachloride gas at
273 K and 40 L
1/2 mol of
xenon gas at
273 K and 20 L
The systems, in order of decreasing entropy from highest to lowest entropy, will be
1 mol of oxygen gas at 273 K and 40 L
1 mol of xenon gas at 273 K and 40 L
1 mol of xenon gas at 273 K and 20 L
1/2 mol of xenon gas at 273 K and 20 L
1/2 mol of liquid xenon at 100 K
1/2 mol of xenon gas at 100 K and 20 L
1 mol of carbon tetrachloride gas at 273 K and 40 L
Entropy is a measure of the disorder or randomness of a system. Generally, a system with a higher temperature, a higher number of moles, or a larger volume will have a higher entropy.
In this case, the system with the highest entropy is the 1 mol of oxygen gas at 273 K and 40 L. The reason is that the temperature is high, the number of moles is high, and the volume is large.
The systems with the lowest entropy are the 1/2 mol of liquid xenon at 100 K and the 1/2 mol of xenon gas at 100 K and 20 L. The reason is that the temperature is low, and the number of moles is low.
The other systems fall in between these extremes, in order of increasing entropy: 1 mol of xenon gas at 273 K and 40 L,1 mol of xenon gas at 273 K and 20 L, 1/2 mol of xenon gas at 273 K and 20 L, and 1 mol of carbon tetrachloride gas at 273 K and 40 L.
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which of the following best represents the titration halfway to the equivalence point half of the h2o2 has reacted
5 H2O2 ions and 2 Mn ions best represents the titration halfway to the equivalence point half of the h2o2 has reacted.
The equivalence point of an acid is a measure of the strength of the acid. The closer the pH is to 7.0, the stronger the acid, and the more basic (> 7.0 pH) the weaker the acid. If there is a half equivalence point where the pH curve flattens, the flatter and wider the range, the more buffering the acid.
The half equivalence point represents the point at which exactly half of the acid in the buffer has reacted with the titrant. At the half equivalence point, the pKa of the acid is equal to the pH of the solution, so the half equivalence point is relatively easy to determine.
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how many moles of h2o are produced when 1 mole of mg(oh)2 reacts with 1 mole of h2so4?
In the reaction between one molecule of magnesium hydroxide and one mole of sulfuric acid, 1 molecule of magnesium sulfate with 2 moles of water are produced.
What purpose does magnesium hydroxide serve?Magnesium chloride is a relatively brief remedy for occasional constipation in both kids and adults. Magnesium hydroxide is a component of a class of medications known as saline natural remedies. It works by causing the feces to hold onto water.
Does magnesium hydroxide work well to neutralize acids?Heartburn, acid reflux, and gastrointestinal issues are all treated using antacids that combine hypochlorous acid and hydroxides. They can be used to treat patients from peptic ulcer disease, gastritis, peptic ulcer disease, hiatal hernias, or excessive digestive fluids (gastric hyperacidity).
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Bacterial fermentation of sugars usually results in results in ___________ end products. end products whereas breakdown of proteins and amino acids the formation of __________ Multiple Choice O acidic........alkaline O acidic.....alcoholic O alkaline.......sulfide O alcohol........acidicO alkaline........acidic
Acidic end products are typically produced when bacteria digest carbohydrates. alkaline is produced as a result of the degradation of proteins and amino acids.
Which 20 necessary amino acids are there?
Histidine, valine, leucine, lysine, homocysteine, phenylalanine, threonine, tryptophan, & valine are the necessary amino acids. Alanine, asparagine, asparagine, glutamic acid, & serine are the non-essential amino acids.
What does a skin amino acid do?
All protein, including the most prevalent protein filaments in the skin, keratins, collagen, and elastin, are made up of amino acids. Skin that is chronically sun-damaged, aged, and neglected exhibits sagging and wrinkles, which are mostly attributed to the degeneration of collagen fibres.
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why does the usda recommends limiting foods with added sugars, saturated fat, and high levels of sodium?
Usda recommends limiting foods with added sugars, saturated fat, and high levels of sodium because it disturbs the iodine level in the body.
Saturated fats are one type of fat in the foods we eat and the beverages we drink. Most come from animal products, like dairy, meat, and poultry. To limit the amount of saturated fats you eat, choose lower-fat and lean options of dairy, meat, and poultry — like skim milk, lean beef, and grilled chicken breast without the skin.
Eating too many foods high in saturated fats can be bad for your health. By replacing saturated fats with unsaturated fats, you may lower your risk of getting heart disease.
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microscale reactions involve reaction mixtures with volumes ?
Microscale reactions involve reaction mixtures with volumes of 5 ml or less than 5 ml.
What exactly is a microscale reaction?Microscale chemistry (also known as tiny-scale chemistry, in German: Chemie am Mikromaßstab) is an analytical approach as well as a teaching method that works with small quantities of chemical compounds. Benefits of Teaching with Microscale Chemistry explains how microscale chemistry allows you to perform more experiments in less time while also being safer, more exact, less expensive, and creating less waste.
A chemical reaction includes the transformation of reactant atoms, ions, and/or molecules into product atoms, ions, and/or molecules at the microscopic level. This necessitates the breaking of certain connections, the formation of others, and the relocation of some nuclei.
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BCD Chemical Distributors has prepared a barrel of hazardous chemicals to be shipped to your employer. Select from the options to determine which items must be in place before it can be shipped. Select all that apply.answer choicesSDSPrice TagWarning LabelShipping Item Sheet
Specified elements including pictograms, signal words and hazard and precautionary statements.
What is necessary for each hazardous chemical on a construction site?Employers are required to keep copies of SDSs for any hazardous substances in their workplaces. If you do not immediately receive an SDS from your provider, you must request one. You must also make sure that SDSs are easily available to employees when they are in their work areas during their shifts.
OSHA has modified the criteria for hazardous chemical labeling under its Hazard Communication Standard (HCS). Pictograms, a signal word, hazard and precautionary remarks, the product identity, and supplier identification are all needed on all labels.
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The lattice energy of MgCl2 is the energy change for which one of the following processes?a. Mg(s) + Cl2(g) → MgCl2(s)b. Mg(g) + 2Cl(g) → MgCl2(s)c. Mg2+(s) + 2Cl−(g) → MgCl2(g)d. Mg2+(g) + 2Cl−(g) → MgCl2(s)e. MgCl2(aq) → MgCl2(s)
The lattice energy of MgCl2 is the energy change for Option D Mg2+(g) + 2Cl−(g) → MgCl2(s)e. MgCl2(aq) → MgCl2(s)
The energy necessary to turn one mole of ionic solid into gaseous ionic components is defined as lattice energy. Or, put that another way, it is the energy is released whenever an ionic solid is established from its gaseous ionic constituents. The lattice energy in chemistry is the energy change that occurs during the creation of one molarity of a crystalline ionic compound from its constituent ions, which also are assumed to be in the gaseous form at the start. It is a measurement of the cohesive forces that hold ionic solids together. The highest lattice energy is displayed by NaF. The greater the attraction between ions, the smaller the surface area of the cation. When ions of opposite charge are small, the bond between them is strongest. Hence lattice energy for MgCl2 is given by Mg2+(g) + 2Cl-(g) --> MgCl2(s). So option D is correct.
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a chemist mixes two liquids, a and b, to form a homogeneous mixture. the densities of the liquids are 2.0514 g/ml for a and 2.6678 g/ml for b. when she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is, it neither sinks nor floats. if the mixture is made of 41.37 percent a and 58.63 percent b by volume, what is the density of the metal?
If the mixture is made of 41.37 percent a and 58.63 percent by volume, then the density of the object is calculated as 1.9302 g/mL.
What is density?Density is a mass of a unit volume of a material substance. It is commonly expressed in units of grams per cubic centimeter.
Given, vA = 413.7 mL and vB = 586.3 mL
total (A+B) density = mass AB / volume AB
As, mAB = mA + mB
mA = vA * dA = 413.7 mL * 2.0514 g/mL
= 848.664 g A
mB = vB * dB = 586.3 mL * 2.6678 g/mL
= 1564.13 g B
Hence, mAB = 2412.795 g AB
total density = 2412.795 g / 1000 mL = 2.4127 g/mL AB
Use principle of Archimedes' to find the density of a solid suspended in a liquid:
E = dAB * g * Vs
Vs is submerged solid volume; E : fluid weight displaced by the solid
and dAB : mix density ; g : gravity
As, ∑F = 0
E - Wsolid = 0
Hence, E = Wsolid
∴ Wsolid = msolid * g
Now, msolid * g = dAB * g * Vs
msolid = dsolid * Vs
So, msolid = dsolid * Vsolid
Assuming that 80% of solid is submerged in mixture, we have: Vs = 0.8 * Vsolid
Then, dsolid * Vsolid = dAB * 0.8 * Vsolid
dsolid = dAB * o.8
dsolid = 2.4127 g/mL * 0.8
So, dsolid = 1.9302 g/mL
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consider the two binary compounds al2o3 and n2o3. which is a binary ionic compound and which is a binary covalent compound? explain. al2o3 is properly named aluminum oxide, but n2o3 is named dinitrogen trioxide. explain fully why one name uses greek prefixes and the other does not.
N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What you mean when you compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
b) The named dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
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N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What is compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
The named Dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
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in an experiment, the concentration of a is monitored every 20 seconds as the reaction proceeds. explain how you can use the data from the experiment to determine the rate constant, k, of the reaction mentioned above.
The rate constant, k, of a reaction can be calculated from the data collected from an experiment by fitting the data to the integrated rate law equation for a given order reaction.
What is reaction?Reaction is a response to a stimulus or event. It can be conscious or unconscious, and can range from physical changes, such as a reflex or a dilation of the pupils, to psychological changes, such as an emotional reaction or a change in behaviour.
The integrated rate law equation for a first-order reaction is ln(A) = -kt + ln(A0), where A is the concentration of the reactant at any given time, A0 is the initial concentration of the reactant, and k is the rate constant. By plotting ln(A) versus time and fitting the data to the equation, the rate constant k can be calculated from the slope of the best-fit line.
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butane, a natural gas used in lighters, has a molar mass of 58.12 g/mol. How many particles are present inside a lighter if there is 1.00 gram of butane in it?
Number of particles of Butane present inside a lighter is 0.1 x 10^23 particles
It is given that
molar mass of Butane = 58.12 g/mol
given mass of Butane = 1.00 gram
Moles of Butane = given mass/molar mass
1/58.12 g/mol = 0.017 moles
1 moles of Butane = 6.022 x 10^23 particles
0.017 moles = 6.022 x 10^23 x 0.017
= 0.1 x 10^23 particles
Particle number, N, is defined as the number of particles per unit weight of a powder and can be obtained in the following manner.
Hence, Number of particles of Butane present inside a lighter is 0.1 x 10^23 particles
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what happens inside an air-filled balloon is squeezed on all sides?responsesthe air molecules remain in the same place.the air molecules remain in the same place.the air molecules move closer together.the air molecules move closer together.the air molecules move farther apart.the air molecules move farther apart.the air molecules move more slowly.the air molecules move more slowly.
The air molecules move closer together. This works on Boyle's law.
A balloon is an instance of Boyle's law in action. The balloon is filled with air, and the pressure of that air thrusts on the rubber, causing the balloon to expand. When one end of the balloon is squeezed, the pressure inside increases, causing the un-squeezed portion of the balloon to expand out. Boyle's Law is a fundamental law of chemistry that describes the behaviour of a gas at a fixed temperature. Robert A. Boyle discovered the law in 1662, which states that at a constant temperature, the volume of a gas is inversely proportional to the pressure exercised by the gas.
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hydrogen (h) atoms have an atomic number of 1. in a nuclear fusion reaction, one atom of hydrogen with a mass number of 2, and one atom of hydrogen with a mass number of 3 are smashed together. they form a new atom and lose one neutron into the environment. what atom is produced and what atomic number and what mass number does it have as a result of this reaction? you should use the periodic table to answer this question.
When deuterium and tritium fuse, the atom produced is helium nucleus, which atomic number 2 and mass number 4.
How much energy does the fusion of deuterium and tritium produce?One deuterium nucleus and one tritium nucleus fuse to produce one helium nucleus, one free neutron, and 17.6 MeV of energy in a process known as deuterium-tritium fusion (also abbreviated as D+T). For fusion devices, it is the type of fusion that is most effective.
What is the reaction known as when the deuterium and tritium nuclei combine?Illustration of the fusion reaction between deuterium (D) and tritium (T), which results in the production of helium nuclei (or alpha particles) and high-energy neutrons. The Sun and other stars are propelled by nuclear fusion processes. Two light nuclei combine to form one heavy nucleus during a fusion process.
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which of the following statement(s) are false? question 50 options: smaller drops have smaller curvature and require greater vapor pressure to keep water molecules from evaporating away. larger drops have greater curvature and require greater vapor pressure to keep water molecules from evaporating away. as the drop size increases, the required relative humidity (rh) for equilibrium increases. as the drop size decreases, the required relative humidity (rh) for equilibrium decreases. a
The false statement are the drop size decreases, the required relative humidity for equilibrium decreases and the drop size increases, the required relative humidity for equilibrium increases.
What more strongly affects droplet size?Droplet size decreases with both rising fluid temperature and pressure. Droplet size is reduced by both increased viscosity and surface tension. By taking into account these variables, you may adjust the droplet sizes to best meet the demands of each situation.
What is the relative humidity at equilibrium?The relative humidity of the atmosphere at a specific temperature when a material neither absorbs nor loses moisture is known as equilibrium relative humidity (ERH). Hygroscopic materials enter the ERH by collecting or releasing moisture at a specific relative humidity of the surrounding air.
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what is viscosity? how does viscosity depend on intermolecular forces? what other factors affect viscosity?
The inability of a liquid to flow freely is known as viscosity. When molecules are more strongly attracted to one another, they do not flow around one another as freely, and this causes greater viscosity in substances with stronger IMF.
How do intermolecular forces affect viscosity, and what is it?In terms of flow resistance, a liquid's viscosity is its density. High viscosities are common in liquids with powerful intermolecular forces.
The type of crude oil, temperature, pressure, amount of dissolved gas, and composition all affect viscosity. Reduced viscosity will occur as temperature rises. Therefore, measurements of viscosity are always reported along with the temperature that they were made at.
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Select the element(s) that will have one unpaired electron in the p orbital.
A. Ar
B. Mg
C. Al
D. O
E. Cl
The element that will have one unpaired electron in the p orbital will be aluminum (Al).
The electronic configuration of the given element as follows:
The atomic number of argon (Ar) will be 18: 1s22s22p63s23p6
The atomic number of magnesium (Mg) will be 12: 1s22s22p63s2
The atomic number of aluminum (Al) will be 11: 1s22s22p63s23p1
The atomic number of oxygen (O) will be 8: 1s22s22p4
The atomic number of chlorine (Cl) will be 17: 1s22s22p63s23p5
Therefore, aluminum is the only element hat will have one unpaired electron in the p orbital.
Thus be concluded that element Al will have one unpaired electron.
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what is the wavelength λ of the photon that has been released in part b?
Delta E=2.05×10−18 {\rm J}
the photon that was released in part b's wavelength Additionally, it has been demonstrated for graphene that emission flux can approach an excitonic convergence threshold of 106 eV.
What is the photon that was released in part b's lambda wavelength?Rate constant = −2.04×10−18 J E=hc, where is the photon's wavelength in meters, 6.6261034 Js is Planck's characteristic, and 3.00108 m/s is the frequency of light in a vacuum relates the photon's energy to its wavelength.
What connection exists between wavelength and energy E?A photon's energy E is equal to hv = hc/, where v is the electromagnetic radiation's frequency and is its wavelength. the forces in Wavelengths are normally specified in micrometres (1 nm = 109 m), while megajoules (1 eV = 1.6 109 J) are commonly used to express quantum physics.
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there are three primary gases in the atmosphere n2 makes up 78%, o2 is 21%, and ar is ~1%. (we're ignoring the thousands of trace gases.) a sample of atmosphere is placed in a flask at stp. what is the partial pressure of o2 in the flask?
The flask's partial oxygen pressure is 0.78 atm. 1.72 x 102 mol, -0.21 x atm, and -6.38 x 102 mol
What is the atmosphere of Earth?Vision Learning, a website for learning, claims The composition of the Earth's atmosphere is roughly 78% nitrogen, 21% oxygen, 0.93% argon, 0.04% carbon dioxide, and trace amounts of neon, helium, methane, krypton, ozone, hydrogen, and water vapor.
How do you define atmosphere in a sentence?As it made contact with Earth's atmosphere, the spacecraft broke apart. 2 They were unhealthyly cramped in their living conditions. 3 The ambiance there strikes me as being somewhat impersonal. 4 The environment in towns and cities is contaminated by these pollutants.
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carbon tetrachloride displays a triple point at 249.0 k and a melting point (at 1 atm) of 250.3 k. which state of carbon tetrachloride is more dense, the solid or the liquid? explain.
Chlorine is really the main liquid used in extinguishers, which is why it works so well to put out tiny flames. It doesn't ignite at any temperature and is not flammable.
The usage of carbon tetrachloride extinguishers has been discontinued.Dichromate extinguishers were abandoned in the 1950s because to the chemical's toxicity, which causes the nerves and major organs to be destroyed when exposed to large doses. A fire's heat can also transform CTC into hydrogen cyanide gas, a chemical agent that was occasionally used.
What is the proper way to get rid of carbon tetrachloride?Get in connect with a licensed, professional rubbish disposal company to have this material removed. After combining it in or combining it with an explosive solution, burn the chemical in a thermal crematorium with an intake and scrubber;
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