The sequence of raw meat, poultry, and fish in the refrigerator should be entire fish, whole cuts if beef and pig, ground protein foods, as well as the whole mixed ground chicken.
Just what is food, please?food is a material that is mostly made up of nutrients such as protein, carbohydrates, and fat and is utilized by organisms to fuel their development and important operations.
Why is food such a big deal?One of life's fundamental needs is food. Nutrients are compounds that are necessary for the control of important activities as well as the development, repair, as well as maintenance of bodily tissues.
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which of the following reaction energies is the least exothermic (but still an exothermic reaction)? group of answer choices -540 kj/mole -125 kj/mole not enough information given 125 kj/mole 540 kj/mole
The reaction which gives -125 kj /mole of energy is the least exothermic but still an exothermic reaction.
What is exothermic reaction?An exothermic reaction is a chemical reaction that releases energy in the form of heat or light. These reactions are the opposite of endothermic reactions and can be represented by the following chemical formula: reactant → product + energyAn exothermic reaction is one in which energy is released in the form of light or heat. Therefore, in exothermic reactions, energy is transferred to the environment instead of taking energy from the environment as in endothermic reactions. For exothermic reactions, the change in enthalpy (ΔH) is negative.Can learn more about exothermic reaction from: https://brainly.com/question/2924714
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the scores in an introductory statistic class were normally distributed with a mean of 78 and a standard deviation of 8 points. 1. the proportion of the scores between 70 and 80 would be about
The proportion of the scores between 70 and 80 would be about 0.75.
The mean is 78, sd= 8
formula= X-Mean/ SD
First, calculate with 70 then 80, and then mention from the "normal distribution" table to find both values and subtract them.
A continuous probability distribution for a random variable with an accurate value is known as a normal distribution or a Gaussian distribution in statistics.
formula= X-Mean/ SD
i) Normal distribution is
70-78/ 8
= -1
take the modulus of -1
| -1 | = 1
ii) normal distribution is
80-78/8
=2/8
= 0.25
now subtract i) from ii)
0.25-1 = -0.75
take the modulus of -0.75
|-0.75| = 0.75
∴0.75 is the proportion of the score.
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how can you use ir and nmr as tools to indicate a successful reaction? mention which stretch(es) you would see in the starting material, but not in the product, or vice versa. give approximate wavenumber ranges for the peaks.
IR and NMR as tools to indicate a successful reaction .stretch(es) would see in the starting material, but not in the product, or vice versa. wavenumber ranges for the peaks is vanillyl alcohol lacks the peak about the 1700 cm⁻¹. range 9.5 - 10 ppm.
In the IR and NMR: The vanillyl alcohol lacks the peak of 1700 cm⁻¹ from C double bond O . the range is 9.5 - 10 ppm. IR tells the functionality present in the given product or the reactant.
Thus, IR and NMR as tools to indicate a successful reaction .stretch(es) would see in the starting material, but not in the product, or vice versa. wavenumber ranges for the peaks is vanillyl alchol lacks the peak about the 1700 cm⁻¹.
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In which one of the following is the best Lewis structure a resonance structure? (central atoms are bold)
A.
CO2
B.
ClO3-
C.
COCl2
D.
NO2+
E.
HCN
The one of the following is the best Lewis structure a resonance structure. (central atoms are bold) is ClO₃⁻.
The molecules which are described by the multiple structure by using the Lewis structure are called as the resonance structures. in the given options the best Lewis structure a resonance structure is ClO₃⁻. the central atom in this molecule is the chlorine Cl. in this Cl atoms form double bonds with two O atoms and a single bond with one oxygen atom. the single bonded O will carry a negative charge so. due to this there will three equally stable structures are possible.
Thus, The one of the following is the best Lewis structure a resonance structure. (central atoms are bold) is ClO₃⁻.
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five identical 1.0-l flasks contain the following gases each at 0 oc and 1 atm pressure. the densities (g/l) of the gases are listed below. which gas has the smallest molar mass?
All following gases are present in five identical 1.0-l flasks, each at 0 oC and 1 atm of pressure. He, Cl2, CH4, & NH3 gas have the smallest molar masses among the gases.
What is gas explain?In spite despite gravity or regardless of how much of material present, a gas is a material sample that adopts the form of the container that it is housed and develops an uniform distribution inside the container.
What is gas and example?Undefined in terms of shape or volume, gas is a sort of stuff. One element, like hydrogen gas (H2), one molecule, like dioxide (CO2), or indeed a combination of numerous gasenitrous oxides can make up a gas (N2O).
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name the following peptide using both the one-letter and the three-letter abbreviations for the names of the component amino acids. be sure to answer all parts.
The Arg-Asn-Val is the three-letter acronym for the name of the individual amino acids. Basically, it is made up of three amino chains.
Describe amino acids in simple terms.Proteins are made up of substances called amino acids. Antibodies and amino acids are the components of life. Proteins are the byproducts of the digestion or decomposition of proteins. Amino acids are used by the human body to build proteins that aid in: Deconstruct food.
Why are amino acids necessary?Body protein as well as other vital nitrogen-containing substances including creatine, related proteins, and also some neurotransmitters cannot be produced without amino acids. Although allowance are expressed in terms of protein, proteins are a biological necessity.
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What are some factors that influence the effectiveness of a chemical sanitizer?.
The efficiency of chemical sanitizers depends on a number of variables. Volume, temperature, contact time, total alkalinity, and pH are among the most important.
What instances from chemistry?The substances, such as copper, nitrogen, and oxygen, as well as compounds comprised of components like alcohol, carbon dioxide, and salt, as well as more complicated materials, such as a computers, the air you breathe, precipitation, a chicken, a car, etc., are examples of chemicals.
What materials make up chemical?Chemicals are another name for matter, which is everything composed of atoms. Chemicals are the buildings you can create using atoms as the building pieces in a LEGO set. They could be solid, liquid, or gas in any form. Chemical can be a combination or a pure substance.
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which of the following major pollutants or polluters are subject to regulations that are rarely enforced? choose all that apply. group of answer choices motor vehicles cafos mercury carbon dioxide
The correct answer is motor vehicles.
The Clean Air Act primarily intended to set the parameters or standards for ambient air quality in the United States and plans associated with implementation of these standards. These are to prevent pollution caused by motor vehicles.
It requires air pollution controls to be installed on motor vehicles' that would assist in maintaining the air quality standards and keep the air safe for the citizens.
Motor vehicles, chimneys, and drainage pipes are all examples of point source pollution.
Therefore, the major pollutants are released by motor vehicles causing the highest level of pollution.
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If 2 g of element x combines with 7 g of element y to form compound xy, how many grams of y are needed to form compound xy2? explain your reasoning.
If 2 g of element x combines with 7 g of element y to form compound xy, grams of y are needed to form compound xy₂ is 14g.
According to the given condition :
2g of x + 7g of y ----> xy
7g of y form xy where y = 1
let a g of y form xy₂ , where y = 2
therefore a = 2 × 7 g
a = 14 g
so y are needed to form xy₂ = 14g
According to conservation of mass neither be created nor be destroyed.
Thus, the grams of y are needed to form compound xy₂ is 14g.
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Draw an alkyl bromide with proper stereochemistry that can be used to synthesize the given alkene as the exclusive product via an E2 reaction. All chiral centers must have four bonds drawn. Does the alkyl bromide drawn give the provided alkene product via an E2 mechanism? Did you take stereochemistry and regiochemistry into account? Does every chiral center have all four bonds drawn
There is a cyclohexane with four methyl groups. Two of them are angled in the direction of the molecule with the darker bond. As a result, one of the bonds in the alkyl bromide's structure should contain bromine.
And this bromine should be facing the other way from the methyl groups, who should be facing toward for an E2 reaction to occur. This is so that an E2 reaction can take place when there is less steric interference in the molecule. An E2 reaction will require a lot more work to complete if the bromine is facing in the same direction as the methyl group. I will instead advocate for an E1 or a replacement product.
A cycloalkane, cyclohexane has the chemical formula C6H12. It is non-polar, cyclohexane. Colorless and combustible, cyclohexane has a characteristic detergent-like stench.
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why is it necessary to measure volumes carefeull when preparing teh acetic acid solution but not necessary to measure vbolumes too carefully when preparing the dilute naoh solution
The calculated molar mass will be too high.
What is volume?
A closed surface-enclosed three-dimensional space's physical quantity. As an illustration, consider the area or shape that a substance like a solid, liquid, gas, or plasma occupies. Additionally, the cubic meter, an SI-derived unit, is frequently used to express volume numerically.
What is acetic acid?
Acetic acid, which has the chemical formula CH3COOH, is also known as ethanoic acid, ethylic acid, vinegar acid, and methane carboxylic acid. In water, vinegar contains 4-6% acetic acid.
When we add water it does not affect the reuse of titration, this it is not necessary to have exact reacting of the volume of dilute NaOH solution but it is necessary for acetic acid, since we are interested for number of moles of acid in the flash.
2, we need to know initial at volume of reading of brunette and not round it to a absolute value, since the error of the brunette reading should be of the range = I 0.07 √(initial)^2 +(final)^2
3, we want to know the moles of acetic acid, then adding water does not affect titration of acetic acid, since water is not acid.
4,Even in the presence of air bubble due to incompletely filled, burette, the acid will use the same amount of base it would normally use but the brunette will read higher than it should because of air bubble.
Hence the calculated molar mass will be too high.
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What is a reduction reaction give an example?.
There are several applications for reduction processes, which result in oxygen loss. For instance, reducing ores is accomplished via the reduction reaction method.
Is a Reduction reaction N2 + 3 H2 → 2NH3. Create electrochemical cells and convert ammonia into nitric acid to acquire metals. An instance of a chemical process in which reduction and oxidation take place simultaneously is known as a reduction-oxidation or redox reaction. In contrast to oxidized species, reduced species gains electrons. Oxygen is not required for an oxidation process.
The chemical element with the letters O and the atomic number 8 is called oxygen. It belongs to the periodic table's chalcogen group and is a very reactive nonmetal.
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How many drinks are contained in a 60 ounce pitcher of beer with an ABV of 5%?.
Twelve ounces of beer constitute a drink. 5 drinks x 12 ounces = 60 ounces of beer in five drinks.
A standard beverage is defined as 12 ounces of beer 5 ounces of wine, or 1.5 ounces of spirits containing the same amount of alcohol. The 60-ounce mug holds five of his 12-ounce beers and is the most common mug in restaurants and bars, according to Sound Brewery.
So if you're rushing through this article in the middle of a bar five beers might be the answer. The 22-ounce bottle format, interchangeably referred to as the bomber 22 or 2 helped facilitate the expansion of small local breweries to statewide and regional breweries. After years of the growing popularity and shelf space, the format appeared to be in decline, and its demise was accelerated by the explosive growth of cans.
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What is the formula for finding geometric sequence?.
The nth term of the series in geometric sequence is, aₙ = a · rⁿ⁻¹
The geometric sequence formulas include the formulas for finding its nth term and the sum of its n terms.
We will see the geometric sequence formulas related to a geometric sequence with its first term 'a' and common ratio 'r'
The nth term of the geometric sequence is, aₙ = a · rⁿ⁻¹
The sum of the first 'n' terms of the geometric sequence is,
Sn = a (1 - rⁿ) / (1 - r), when |r| < 1
[OR]
Sn = a (rⁿ- 1) / (r - 1), when r > 1 (or) when r < -1
Therefore, the nth term of the geometric sequence is, aₙ = a · rⁿ⁻¹
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What should be done to a thermometer before using it to test a food temperature?.
Before measuring the temperature of a different food, the thermometer's probe must be cleaned and sanitized because it will be placed into food.
The probe of a thermometer can be cleaned and sanitized by following the steps listed below:
washing the probe in warm water with detergentsanitizing the probe according to your thermometer's needs (alcoholic swabs are frequently used)rinsing the sanitizer away, if necessary (refer to the sanitizer's instructions)allowing the probe to dry naturally or completely with a disposable towel.Hence, cleaned and sanitized thermometer prevent food spoiling due bacterial contamination.
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Does sugar and salt dissolve in oil?.
No, oil does not cause sugar or salt to dissolve. Because they are made up of ions, salt and sugar do not dissolve in oil. Atoms with one or more missing electrons are known as carbohydrates.
Their good or negative nature results from this. Cations and anions, respectively, make up the two salts and the sugar. Furthermore, although you can't usually state something doesn't dissolve at all, sugar would not dissolve well in oil because it is polar and oil isn't. Polar solvents facilitate the better dissolution of polar compounds.
These sugars have simple chemical structures made up of just one sugar (monosaccharides) or just two sugars (such as glucose and fructose), which are what these carbohydrates are made of (disaccharides). Is called carbohydrates.
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What happens on an atomic level when a reaction between two elements such as sodium and chlorine results in two oppositely charged ions?.
On an atomic level when a reaction takes place between two elements such as sodium and chlorine result in
two oppositely charged ions is they combine to form an ionic compound, sodium loses its one electron to
chlorine so chlorine gains one electron.
It forms a chloride ion and forms the ionic compound sodium chloride.
be sure to answer all parts. predict the minor product of the following reaction, then draw a stepwise mechanism for the formation of the major product: mech402a part 1 out of 4 minor product: draw structure ...
The minor product of the following reaction will be (1R,3S)-1-chloro-3-methylcyclohexane.
The intermediate "chlorosulfite" is produced by both processes. However, pyridine, a competitive nucleophile, can engage the chlorosulfite, displace the chloride ion, and create a charged intermediate. If the leaving group forms a carbocation, there's no lone pair on the same face that may attack.
This process, known as the SN1 reaction mechanism, involves the coordination of SOCl₂ with alcohol while losing HCl and generating a strong leaving group (chlorosulfite). The carbocation that is generated when the chlorosulfite leaving group spontaneously departs is known as an "intimate ion pair" because the carbocation and leaving group are bonded closely together in space. Following the expulsion of SO₂, an alkyl chloride is formed with configuration retention. From this point, the chlorine can act as a nucleophile by engaging the carbocation.
The reaction process along with the complete question is attached.
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Calculate the theoretical yield of C2H5Cl if 112 g of C2H5OH is reacted with 58.3 g of PCl3. If only 61.8 g of C2H5Cl are produced, what is the percent yield?
The theoretical yield of C₂H₅Cl if 112 g of C₂H₅OH is reacted with 58.3 g of PCl₃ is 82.2 g and percent yield is 0.7518.
The balanced chemical equation for the reaction of C₂H₅Cl and PCl₃ is given as:
3 C₂H₅OH + PCl₃ → 3 C₂H₅Cl + H₃PO₃
1 mole of C₂H₅OH = 46 g
1 mole of PCl₃ = 137.33 g
1 mole of C₂H₅Cl = 64.51 g
3 moles of ethanol react with 1 mole of PCl₃
112 g of ethanol react with PCl₃ = (137.33 × 112) / (3 × 46)
= 111.45 g of PCl₃
Given amount of PCl₃ = 58.3 g
Hence, PCl₃ is the limiting reagent.
1 mole of PCl₃ produces 3 moles of C₂H₅Cl.
58.3 g of PCl₃ produces C₂H₅Cl = (3 × 64.51 × 58.3) / (137.33)
= 11282.7 / 137.33
= 82.2 g
Hence, the theoretical yield of C₂H₅Cl is 82.2 g.
For C₂H₅Cl,
Actual yield = 61.8 g
Theoretical yield = 82.2 g
∵ Percent yield = (Actual yield / Theoretical yield) × 100%
Substituting the values,
Percent yield of C₂H₅Cl = (61.8 / 82.2) × 100%
= 0.7518 × 100%
= 0.7518
Hence the percent yield is 0.7518.
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Place a check mark [√] next to the things that are expected to INCREASE the rate of an enzymatic reaction a. Add more enzyme [√] b. Add more substrate c. Adjust pH to optimal level [√] d. Add a non-competitive inhibitor e. Freezing
Adding more substrate, more enzyme and adjusting the pH to the optimal level will increase the rate of the enzymatic reaction.
When we increase the enzyme concentration, more and more substrate are reacted and hence the rate of the reaction is increased.
Also, when the substrate is present in a large amount the enzyme works more efficiently because it has more allosteric sites to binds to.
As the enzymes are pH as well as temperature specific, the activity of the enzyme highly depends on the pH value, so, adjusting the pH to optimal level and freezing will decrease the activity of the enzyme.
The addition of non-competitive inhibitor will also decrease the rate of reaction because it will decrease the number of active sites to bind for the enzyme,
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Consider the following double-displacement reactions. For each, identify the driving force that causes the reaction to go to completion.
(reaction formula)
For each, identify the driving force that causes the reaction to go to completion riding pressure at the back of double-substitute reactions is the formation of a solid product.
Double substitute reactions have the shape. Ions in compounds AB and CD transfer partners. A precipitate bureaucracy in a double-substitute response whilst the cations from one of the reactants integrate with the anions from the alternative reactant to shape an insoluble ionic compound.
Double substitute reactions have ionic compounds which are replacing anions or cations. Precipitation reactions and neutralization reactions are not unusual place styles of double substitute reactions.
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What happens if lithium loses an electron?.
Answer:
When lithium loses one electron. It completes duplet state.
Which information is sufficient to differentiate a sample of sodium from a sample of silver?.
The reactivity of each sample with water is sufficient to differentiate a sample of sodium from a sample of silver.
Silver is a highly reactive metal and will react with water to form silver hydroxide and hydrogen gas. The reaction of silver with water can be represented as follows:
2Ag (s) + 2H₂O (l) → 2AgOH (aq) + H₂ (g)
Sodium is also a highly reactive metal and will react with water to form sodium hydroxide and hydrogen gas. The reaction of sodium with water can be represented as follows:
2Na (s) + 2H₂O (l) → 2NaOH (aq) + H₂ (g)
Both of these reactions are highly exothermic, meaning they release a large amount of energy. This energy can be dangerous if not handled properly. The reaction between sodium and water is particularly dangerous because it releases a large amount of heat and can cause the water to boil violently. This can result in the water splashing and burning the skin. For this reason, it is important to handle these reactions with caution.
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Write a balanced half-reaction for the reduction of permanganate ions in acidic solution. What are the oxidation states of manganese in this reaction?.
The oxidation state of manganese in the reaction is +2 and a balanced half-reaction for the reduction of permanganate ions in an acidic solution can be given as; [tex]MnO_{4}^{-} + 8H^{+} + 5e^{-} ---- > Mn^{2+} + 4H_{2}O[/tex]
Permanganate in chemistry is a general name for the chemical compound which consists of manganate (VII) ion. Permanganate(VII) ion is a strong oxidizing agent because manganese is in a +7 oxidation state and it can be easily reduced and oxidized by other agents.
An acidic solution is a solution that has a high concentration of hydrogen ions therefore the balanced half-reaction for the reduction of permanganate ions in such a solution can be given as;
[tex]MnO_{4}^{-} + 8H^{+} + 5e^{-} ---- > Mn^{2+} + 4H_{2}O[/tex]
Therefore the oxidation state of manganese from this balanced half-reaction is determined to be +2 and water is produced as a by-product
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which of the following represents the portion of the protein molecule coded for by the mrna sequence above?use the mrna sequence ugc - uuc - gag - ucg
The sequence represents the portion of the protein molecule coded for by the mRNA sequence is Leucine-lysine-cysteines phenylalanine. The correct option is c.
What is an mRNA sequence?The order of amino acids in a protein from the N-terminus (methionine) to the C-terminus is specified by mRNA codons, which are read from 5' to 3'. 5'-AUGAUCUCGUAA-5' is the mRNA sequence.
The mRNA interacts with a specialized complex known as a ribosome, which "reads" the mRNA nucleotide sequence. A codon is a three-nucleotide sequence that normally codes for one amino acid.
Therefore, the correct option is c, Leucine-lysine-cysteines phenylalanine.
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The question is incomplete. Your most probably complete question is given below:
threonine-lysine-leucine-serine
arginine lysine leucine cystiene
Leucine-lysine-cysteines phenylalanine
Cisteine phenylalanine glutamic acid serine.
which of the statements is correct? please choose the correct answer from the following choices, and then select the submit answer button. answer choices nacl leaves the ascending limb of the loop of henle through active transport. nacl enters the ascending limb of the loop of henle through diffusion. water enters the descending limb of the loop of henle through osmosis. water leaves the descending limb of the loop of henle through active transport. nacl leaves the descending limb of the loop of henle through active transport, and water enters the ascending limb of the loop of henle through osmosis.
NaCl leaves the ascending limb and water leaves the descending limbs of the loop of henle through active transport. NaCl enters the ascending limb of the loop of henle through diffusion. Water enters the descending limb of the loop of henle through osmosis.
What is ascending limb?The ascending limb of the loop of Henle is a segment of the heterogenous loop of Henle downstream of the descending limb, after the sharp bend of the loop. This part of the renal tubule is divided into a thin and thick ascending limb; the thick portion is also known as the distal straight tubule, in contrast with the distal convoluted tubule downstream.
What is descending limb?The descending limb of loop of Henle is the portion of the renal tubule constituting the first part of the loop of Henle. Descending limb of loop of Henle. Scheme of renal tubule and its vascular supply.
What is osmosis?Osmosis, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes).
What is active transport?Active transport is the process of moving molecules across a cellular membrane through the use of cellular energy.
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two clauses are shown. select if either, neither, or both are false. (i) glycerol is the backbone of triacylglycerides (ii) it is [redacted] during fatty acid mobilization
In this question we are given with two statements and are asked to determine the true ones.
Statement 1: Glycerol is the backbone of triacylglycerides, is true as Glycerol, which is a three-carbon molecule.
It forms the backbone of triglycerides and phospholipids.
Generally, Triglycerides includes three fatty acids, each attached to each of the carbons in glycerol.
Whereas, the structure of Phospholipids includes two fatty acids attached to the two carbons of glycerol and the third carbon is to bind a phosphate group.
Statement 2: it is [redacted] during fatty acid mobilization is also true as the glycerol on after mobilization of fatty acids moves into liver cells, where it gets metabolized into glycolytic/gluconeogenetic intermediates.
Whereas, fatty acids are insoluble in water and are dependent on a protein carrier serum called albumin that helps in transport them to their target cell.
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What is the molecular shape of glucose?.
The molecular geometry or molecular shape of glucose is that the ring structure of glucose has tetrahedral geometry.
What is molecular geometry?
Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.
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What is the molar mass of ammonia gas?.
Ammonia gas has a molar mass of 17.031 g/mol.
How much ammonia causes harm to people?Ammonia has a 25 ppm recommended exposure limit (REL) from NIOSH, which is calculated as an average over an eight-hour workday. The Short Term Exposure Limit (STEL) should be 35 ppm for any 15-minute period during the day, according to NIOSH. Over any 15-minute period, no worker should be exposed to more than that amount.
What is cleaned with ammonia?Additionally, home filth or stains from vegetable or animal oils, such as cooking grease and wine stains, can be effectively removed with ammonia. Ammonia is frequently used in glass cleaning solutions because of how quickly it evaportates, which helps prevent streaks.
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All molecules have energy that causes thermal motion. One result of thermal motion is diffusion: the tendency of substances to spread out evenly in the available space. Although the motion of each individual molecule is random, there can be directional motion of an entire population of molecules.
Consider a chamber containing two different types of dye molecules, purple and orange. The chamber is divided into two compartments (A and B) by a membrane that is permeable to both types of dye. Initially (left image), the concentration of the orange dye is greater on side A, and the concentration of the purple dye is greater on side B. With time, the dye molecules diffuse to a final, equilibrium state (right image) where they are evenly distributed throughout the chamber.
Drag the labels onto the table to indicate when each statement is true. Labels can be used once, more than once, or not at all.
Thermal motion is caused by energy that exists in all molecules. Diffusion—the propensity for substances to disperse uniformly in the available space—is one effect of thermal motion.
Which of the following chemical types can most easily pass through a cell membrane?Phospholipid bilayers only allow tiny, uncharged molecules to freely diffuse across them. Small nonpolar molecules can easily traverse cell membranes because they are soluble in the lipid bilayer. Examples of these molecules include O2 and CO2.
Which membrane proteins are in charge of facilitating the passage of substances across cellular membranes? Select all that apply.The two main kinds of membrane transport proteins are carrier proteins and channel proteins. The specific solute to be transported binds to carrier proteins, also known as carriers, permeases, or transporters, and goes through a series of changes in conformation to move the bound solute across the membrane.
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