draw complete lewis dot structures for ethyl acetate, acetaminophen, phenacetin, caffeine, and aspirin. after analysis of the lewis structure of ethyl acetate (which is used as the mobile phase in this experiment), determine its polar or nonpolar nature. using the structure of ethyl acetate, is it a polar or a non-polar solvent?
Answers
The Lewis structure is a simplified representation of the valence shell electrons in a molecule. It is used to show how electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or to connect electrons as a line between two atoms.
1) Ethyl acetate: \(C_{4}H_{8}O_{2}\)
Ethyl acetate is a widely used solvent, especially for paints, varnishes, lacquers, cleaning compounds, and perfumes. Like last week's MOTW, dichloromethane, is used as a solvent to reduce coffee grounds. In the laboratory, ethyl acetate is a common solvent for column and thin layer chromatography.
2. Acetaminophen:
Acetaminophen is an active ingredient in hundreds of over-the-counter (OTC) and prescription medications. It relieves pain and fever. Acetaminophen can also be combined with other active ingredients in medications that treat allergies, coughs, colds, flu, and insomnia. In prescription acetaminophen is found along with other active ingredients to treat severe pain. Acetaminophen can cause serious liver damage if used more than prescribed. The FDA has taken action to improve consumer safety when using acetaminophen.
3) Phenacetin:
Phenacetin has been used as an analgesic and antipyretic in both human and veterinary medicine for many years. It was introduced in treatment in 1887 and was widely used in analgesic mixtures until it was included in kidney diseases (nephropathy) due to the abuse of analgesics. Phenacetin was also once used as a stabilizer for hydrogen peroxide in hair bleaching preparations.
4-Caffeine
Caffeine is a stimulant, which means it increases activity in your brain and nervous system. Caffeine also increases the circulation of chemicals in the body like cortisol and adrenaline. In small doses, caffeine can make you feel relaxed and focused.
5.Aspirin
Aspirin is a common medicine to relieve minor aches, pains, and fever. Also, people use it as an anti-inflammatory or blood thinner.
Aspirin can buy by people can buy over the counter without a prescription. Daily benefits include relieving headaches, reducing inflammation, and reducing fever.
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Related Questions
High solubility of ammonia in water what type of interaction is responsible for?
Answers
Answer:
The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).
Answer:
Hydrogen Bonding
Explanation:
The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).
The citric acid cycle is the central reaction sequence in the cellular metabolism of humans and many other organisms. One of the key steps is catalyzed by the enzyme isocitrate dehydrogenase and the oxidizing agent NAD⁺. In yeast, the reaction is eleventh order:Rate = K[ enzyme ] [isocitrate]⁴[AMP]²[NAD⁺]m [Mg²⁺]²What is the order with respect to NAD⁺?
Answers
In yeast, the reaction is eleventh order:Rate = K[ enzyme ] [isocitrate]⁴[AMP]²[NAD⁺]m [Mg²⁺]². The order with respect to NAD⁺ is 2.
What is a citric acid cycle?The citric acid cycle is also called the Krebs cycle. This is the main source of energy that happens in aerobic conditions.
The coefficient that is raised to the active concentration of the reactants is the order in the mass action law. It is determined experimentally and can be fractional, positive, negative, or zero.
Each reactant's order, which is increased to its power in the rate law, is added to determine the order of the entire reaction.
The overall rate = 11
Rate of overall reaction = 1 + 4 + 2 + m + 2 = 11
9 + m = 11
m = 2
Thus, the order with respect to NAD⁺ is 2.
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A mixture of three peptides is provided to you to separate. The sequences of the three peptides are known: I. KMWRR(pl=12.01) II. DHEIE(pI=4.13) III. YWIFW (pI=5.52) Assuming the concentration of all three peptides in the mixture is equal, Which of the three peptides will have the least absorbance at 280 nm ? Which of the three peptides will have the greatest absorbance at 280 nm ? Which of the three peptides listed in question #4 would bind to an anion exchange column at pH14 ? Select all that apply. Peptide I Peptide II Peptide III None of them would bind At pH 9.0, which of the peptides listed in Question #4 would bind tightest to a hydrophobic interaction chromatography column? Peptide I Peptide II Peptide III
Answers
Peptide III will have the least absorbance at 280 nm, while Peptide I will have the greatest absorbance at 280 nm.
The absorbance at 280 nm is primarily associated with the presence of aromatic amino acids, such as tryptophan and tyrosine, in a peptide sequence.
Absorbance at 280 nm is primarily attributed to the presence of aromatic amino acids, such as tryptophan and tyrosine. Peptide III (YWIFW) contains tryptophan, which has a high molar absorptivity at 280 nm. Therefore, it will exhibit the least absorbance at this wavelength. On the other hand, Peptide I (KMWRR) contains multiple tryptophan and arginine residues, both of which contribute significantly to absorbance at 280 nm, resulting in the highest absorbance among the three peptides.
For the anion exchange column at pH 14, Peptide II (DHEIE) would bind due to its acidic nature. At this high pH, the peptide will be deprotonated, forming negatively charged groups (anions) that can interact with the positively charged stationary phase of the column. Peptide I (KMWRR) and Peptide III (YWIFW) do not possess acidic residues and, therefore, will not bind to the anion exchange column at pH 14.
Regarding the hydrophobic interaction chromatography column at pH 9.0, none of the listed peptides (Peptide I, Peptide II, Peptide III) would bind tightly. Hydrophobic interaction chromatography relies on the interaction between hydrophobic regions of peptides/proteins and the hydrophobic stationary phase. However, at pH 9.0, the peptides are likely to be in their charged forms, which reduces hydrophobic interactions. Therefore, none of the listed peptides would bind tightly to the hydrophobic interaction chromatography column at pH 9.0.
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a chemist prepares 0.100 mol at a certain pressure and temperature in an expandable container. another 0.010 mol is then added to the same container. how must the volume be changed to keep the pressure and temperature the same?
Answers
According to ideal gas equation, volume must change by 0.5 factor to keep the pressure and temperature the same.
The ideal gas equation is a equation which is applicable in a hypothetical state of an ideal gas.It is a combination of Boyle's law, Charle's law,Avogadro's law and Gay-Lussac's law . It is given as, PV=nRT where R= gas constant whose value is 8.314.The law has several limitations.
Since there are two conditions before addition and after addition which is 0.1×RT/V=0.2×RT/V thus volume changes by factor of 0.5 which is pressure.
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How much water is needed to make 7.2moles of glucose?\(6CO2 + 6H2O -\ \textgreater \ C6H12O6 + 6O2\)
Answers
Approximately 777.6 grams of water is needed to make 7.2 moles of glucose based on the balanced equation.
The balanced equation provided is:
6CO2 + 6H2O -> C6H12O6 + 6O2
From the equation, we can see that for every 6 moles of water (H2O), 1 mole of glucose (C6H12O6) is produced. Therefore, we need to determine the amount of water required to produce 7.2 moles of glucose.
The mole ratio between water and glucose is 6:1. This means that for every 6 moles of water, we obtain 1 mole of glucose. To find the amount of water needed for 7.2 moles of glucose, we set up a proportion using the mole ratio:
(6 moles H2O / 1 mole glucose) = (x moles H2O / 7.2 moles glucose)
Solving for x, we can cross-multiply:
6 moles H2O * 7.2 moles glucose = x moles H2O * 1 mole glucose
43.2 moles H2O = x moles H2O
Therefore, we need 43.2 moles of water to produce 7.2 moles of glucose.
To convert moles of water to grams, we need to know the molar mass of water, which is approximately 18 g/mol. Using the molar mass, we can calculate the mass of water needed:
Mass of water = moles of water * molar mass of water
Mass of water = 43.2 moles * 18 g/mol
Mass of water = 777.6 g
Therefore, approximately 777.6 grams of water is needed to make 7.2 moles of glucose based on the balanced equation.
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Pls big test What are openings in the ground that release energy from deep inside the planet? * 1clouds 2volcanoes 3sun 4hurricanes
Answers
Answer:
2. Volcanoes
Explanation:
The interior of some planets (e.g earth) contains some hot flowing fluids called lava which has a very high thermal energy. The lava as a means of escaping the confinement within the planet, burst out by creating an opening through the ground to the surface of the planet to release the energy (lava).
This process in which the energy is released to the surface of the planet is termed volcanic eruptions. Which occurs majorly in some susceptible regions of the earth.
The openings in the ground that release energy from deep inside the planet is thus called volcanoes.
Work is the transfer of energy through motion. Force and distance are in the same direction
A. True
B. False
Answers
Answer:
True
Explanation:
the long term survival of any species of organnism is possible only if the organisms cansm
Answers
The long term survival of any species of organism is possible only if the organisms can adapt the environment it living and to reproduce.
What is natural adaptation ?Not all kind of living things are fittest to survive in the world to live. Some of them are pray of their predators. Some are unhealthy to survive while some others are competing to find food and shelter.
There are many organisms which have some natural adaptations, like some strategies or physical peculiarities to hide from their predators and survive for ling time. For example, chameleon can hide from others by their color mimicking know as camoflouge.
The fittest one will survive and will be able to maintain their population through reproduction. Therefore, the organisms which can adapt to the environment it lives can survive for ling time.
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In a particular experiment, the reaction of 1. 0g of S with O2 produced 0. 80 g of SO3. The % yield in this experiment is how much %?
Answers
The actual yield of the product obtained in the experiment must be divided by the theoretical yield of the product that could be achieved. The reaction's percent yield is 32% as a result.
The amount of product produced in a chemical reaction or manufacturing process is referred to as yield, and it is typically expressed in mass or volume. Theoretical yield, actual yield, and percent yield are a few of the several types of yield. Theoretical yield, under the assumption that the reaction continues to completion without any losses or side reactions, is the greatest quantity of product that can be produced from a specific amount of reactants. The amount of product that is actually produced during an experiment or production process is known as the "actual yield." The actual yield to theoretical yield ratio, stated as a percentage, is known as percent yield. The efficiency and profitability of a chemical reaction or manufacturing process are significantly influenced by yield.
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Help with chemistry problem 6 please and how to put values in equation in the brackets underneath of the problem (so I can show my work)
Answers
Answer
449.4 grams
Explanation
The balanced chemical equation of the reaction is;
\(N_2+3H_2\rightarrow2NH_3\)From the balanced chemical equation;
3 moles of H₂ reacted with 1 mole of N₂ to produce 2 moles of NH₃
Molar mass of H₂ = 2.016 g/mol
Molar mass of N₂ = 28.0134 g/mol
Molar mass of NH₃ = 17.031 g/mol
Convert mole to gram using the formula;
\(Mole=\frac{\text{mass}}{\text{Molar mass}}\)For 1 mole N₂
\(\begin{gathered} 1=\frac{\text{mass}}{28.0134} \\ mass=28.0134\text{ grams} \end{gathered}\)For 3 moles H₂
\(\begin{gathered} 3=\frac{\text{mass}}{2.016} \\ m=3\times2.016=6.048\text{ grams} \end{gathered}\)For 2 moles NH₃
\(\begin{gathered} 2=\frac{\text{mass}}{17.031} \\ m=2\times17.031=34.062\text{ grams} \end{gathered}\)We can now calculate, the mass of NH₃ that can be produced from 79.8 grams of H₂ as follows:
From the balanced equation we can say;
6.048 grams H₂ → 34.062 grams NH₃
∴ 79.8 grams H₂ → x grams NH₃
\(\begin{gathered} \text{x grams }NH_3=\frac{34.062\times79.8}{6.048} \\ \text{x grams }NH_3=\frac{2718.1476}{6.048} \\ \text{x grams }NH_3=449.4291667\text{ grams} \\ \text{x grams }NH_3=449.4\text{ grams} \end{gathered}\)Therefore, 449.4 grams of Ammonia is produced if you started with 79.8 grams of Hydrogen.
1. Pressure of a gas (decreases, increases) if the volume decreases when temperature
is constant.
Answers
Answer:
If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase. ... Gay-Lussac's law states that at constant volume, the pressure and temperature of a gas are directly proportional.
Explanation:
i hope this helped
PLEASE HELP ME QUICK RIGHT ANSWERS ONLY 40 POINTS :)
What does point f on the phase diagram represent?
Answers
The point F on the phase diagram represents normal melting point. Therefore, the correct option is option A.
A phase diagram is a sort of figure that is used throughout physical chemistry, technology, mineralogy, or materials science to demonstrate the circumstances (pressure, temperature, quantity, etc.) under which thermodynamically different phases (such solid, liquid, or gaseous states) arise or coexist at equilibrium. Lines of equilibrium, also known as phase boundaries, or circumstances under which different phases may remain at equilibrium, are typical elements of a phase diagram. The point F on the phase diagram represents normal melting point.
Therefore, the correct option is option A.
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Helpppp ASAP DON’T GUESS
Which of the following best describe an atomic number? An element identity is defined by its atomic number this means it represents the number of
A) electrons in the element
B) protons plus neutrons in its nucleus
C)neutrons in its nucleus
D)protons in its nucleus
Answers
Answer:
d) protons in its nucleus
Explanation:
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A bowling ball rests on the floor. The bowling ball is given a push.
Which of the following is the most likely change to happen to the bowling ball?
It will move.
It will gain mass.
It will change colors.
It will change shape.
Answers
Answer:
A. It will move.
Which statement best explains the temperatures of a desert environment? A. The high amount of moisture in the air traps heat causing extreme temperature differences. B. The high amount of moisture in the air traps heat causing a very stable temperature range. C. The lack of moisture in the air allows heat to escape quickly at night causing a very stable temperature range. D. The lack of moisture in the air allows heat to escape quickly at night causing extreme temperature differences.
Answers
The high amount of moisture in the air traps heat causing extreme temperature differences.
A narrow range of temperatures allows organisms to survive. It varies between five degrees Celsius and thirty-five degrees Celsius. It best describes a desert climate with warm to hot temperatures year-round without a rainy season.
The desert environment is so dry that it supports only very sparse vegetation. There are few trees and shrubs or herbaceous plants that only form a very incomplete ground cover under normal climatic conditions. Deserts form when there is a lack of sunlight due to a lack of moisture. Evaporation is less due to the relatively low water content. There are also fewer clouds reflecting sunlight.
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Answer:
d
Explanation:
What is velocity?
O A. How fast something moves in a specific direction
B. The distance something moves in a certain time
O C. How much force is applied to something
O D. How much speed changes in a certain time
Answers
55 points plz help
which is not a way to separate the components of a mixture?
A filtering
B distilling
C evaporating
D Stirring
Answers
Answer: A FILTERING
Explanation:
WHEN YOU FILTER YOU SEPARATE (sorry for caps) btw can you check out my recent question plz
In an exothermic reaction is energy transferred to or from the surroundings?
Answers
Answer:
transfer energy to the surroundings
Explanation:
Exo means exit
What is the ph value of neutral substance
Answers
Answer:
Acidity and alkalinity are measured using a pH scale, for which 7.0 is neutral. The lower a substance's pH (less than 7), the more acidic it is; the higher a substance's pH (greater than 7), the more alkaline it is. Average rain has a pH of about 5.6; it is slightly acidic because carbon dioxide (CO2) dissolves into it, forming weak carbonic acid. Acid rain usually has a pH between 4.2 and 4.4. The most common nitrogen-related compounds emitted into the air by human activities are nitrogen oxides. Ammonia is another nitrogen compound emitted into the atmosphere, primarily from agricultural activities and fossil fuels. Most of the nitrogen oxides released in the U.S. due to human activity are from the burning of fossil fuels associated with transportation and industry.
Explanation:
.Which of the following are characteristics of a gas? It moves slowly. It has a fixed volume. It can be compressed. It has a fixed shape.
Answers
Answer:
It has a fixed volume it can also be compressed
Explanation:
1: A gases molecules don't move slow because they are not solid and are not compacted.
Answer:
It can be compressed
Explanation:
The Properties of Gases. Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form.
PLS ANSWER ASAP The following reaction occurs in a car’s catalytic converter.
2NO(g) + 2CO(g) ----> N2(g) + 2CO2(g)
Which answer BEST describes the reducing and oxidizing processes in this reaction?
a. NO and CO are both reducing agents.
b. NO and CO are both oxidizing agents.
c. The oxidation state of nitrogen in NO changes from +2 to 0, and the oxidation state of carbon in CO changes from +2 to +4 as the reaction proceeds.
d. The oxidation state of nitrogen in NO changes from 0 to +2, and the oxidation state of carbon in CO changes from +4 to +2 as the reaction proceeds.
Answers
Answer:
Its B
Explanation: I did the test passed btw
which material allowed house to have highest average internal Temperature? explain your answer
A.Fiberglass
B.Brick
C.Soil
Answers
Brick retains the most heat out of all the choices.
How many mole are there in 7.2 x 1023 formula units of H2S04?
Answers
How can Thermal energy be transformed into mechanical energy?
Answers
Answer:
The devise used to convert thermal energy to mechanical energy are called heat enignes
Low mass stars are stars that _________ solar masses or less.
Answers
gaseous butane ch3ch22ch3 reacts with gaseous oxygen gas o2 to produce gaseous carbon dioxide co2 and gaseous water h2o. what is the theoretical yield of water formed from the reaction of 2.91g of butane and 13.5g of oxygen gas? be sure your answer has the correct number of significant digits in it.
Answers
The balanced chemical equation for the reaction between butane and oxygen to form carbon dioxide and water is shown below.2 C4H10(g) + 13 O2(g) → 8 CO2(g) + 10 H2O(g)We need to calculate the theoretical yield of water formed from the reaction of 2.91 g of butane and 13.5 g of oxygen gas.
To do this, we need to determine which of the two reactants is limiting and then use stoichiometry to calculate the amount of water produced. Butane reacts with oxygen in a ratio of 2:13. Therefore, to calculate the amount of oxygen needed to react with 2.91 g of butane, we use the following calculation: moles of butane = mass / molar mass = 2.91 g / 58.12 g/mol = 0.05 mol The moles of oxygen required = 0.05 mol × (13 mol of O2 / 2 mol of butane) = 0.325 mol So, the limiting reactant is oxygen because there is less of it than required. Using the stoichiometric ratio of the balanced chemical equation, we know that 10 mol of water is produced for every 13 mol of oxygen consumed.
Therefore, the number of moles of water produced can be calculated as follows: number of moles of water = 0.325 mol × (10 mol of H2O / 13 mol of O2) = 0.25 mol The mass of water produced can be calculated using its molar mass: mass of water = number of moles × molar mass = 0.25 mol × 18.02 g/mol = 4.505 g The theoretical yield of water formed from the reaction of 2.91 g of butane and 13.5 g of oxygen gas is 4.505 g of water.
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the volume of the compartment that holds this reaction inside your cars steering column is approximately 0.050 l before the airbag inflates. Calculate the pressure in this compartment if it could hold the same number of moles of n2 from above at a temp of 45.0 c
Answers
The pressure in the compartment would be approximately 52.29 atmospheres
The ideal gas law equation can be applied here: PV = nRT
where P is the pressure (in atmospheres or Pascals).
Volume (measured in litres)
The number of moles is n.
R = 0.0821 L atm/mol K, the ideal gas constant.
Temperature (in Kelvin) equals T.
The provided temperature must first be converted from Celsius to Kelvin:
T(K) equals T(°C) plus 273.15 K = 45.0 + 273.15 K = 318.15 K
We may rearrange the ideal gas law equation to solve for pressure if the volume is 0.050 L, we want to determine the pressure, and we have the same number of moles of N2 as in the prior situation.
P = (nRT) / V
P = (1 mol * 0.0821 L atm/mol K * 318.15 K) / 0.050 L P = 52.29 atm is the result of substituting the variables.
Consequently, 52.29 atmospheres would be the compartment's pressure.
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How many moles of oxygen will occupy a volume of 2.5 liters at 1.2 atm
and 25°C? C°C +273 = °K) (R=0.0821 L.atm/mol-K)
Answers
We are given:_______________________________________________
Volume of Gas (V) = 2.5L
Pressure (P) = 1.2 atm
Temperature (T) = 25°C OR 25+273 = 298 K
Universal Gravitational Constant (R) = 0.0821
Solving for number of moles:___________________________________
From the Ideal Gas Equation,
PV = nRT
(1.2)(2.5) = n(0.0821)(298) [plugging the given values]
n = [(1.2)(2.5)] / [0.0821*298]
n = 300 / [298*8.21]
n = 0.12 moles
Hence, there are 0.12 moles of Oxygen in 2.5L of 1.2 atm gas when the temperature is 25°C
In which of the following cases is the vapor pressure of ethanol greatest?
A. mole fraction of ethanol in water = 0.10
B. mole fraction of ethanol in water = 0.25
C. mole fraction of ethanol in water = 0.50
D. pure ethanol
Answers
Answer:
The answer Is c. mole fraction of ethanol in water=0.50
Explanation:
concentrated hydrochloric acid is 38.0% hci by mass, and it has a density of 1.189 g/ml at 20°c. the density of water at 20°c is 0.9982 g/ml.
Answers
739 ml volume of water would remain
Stepsvolume of solution = 1Litre = 1000 ml
density of solution = 1.189 g/ml
mass of solution = volume of solution × density of solution
= 1000 × 1.189 = 1189 g
conc of HCL is 38% by weight.
so, mass of HCL in 1189g of solution = 38% of 1189 = 451.82g
mass of H2O in solution = mass of solution - mass of HCl
= 1189g - 451.82g
= 737.18g
volume of H2O = mass of H2O/density of H2O
= 737.18/0.9982 ml
=739 ml volume of water would remain.
Hydrochloric acid A colourless to yellowish, smelly liquid, concentrated hydrochloric acid (36.5-38.0%) with a strong smell. Muriatic acid is another name for hydrochloric acid. Though extremely corrosive, it is not flammable. Benzene, alcohol, and water soluble. It is a serious skin and eye irritant, and breathing in the fumes can be dangerous.learn more about hydrochloric acid here
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the question you are looking for is
Concentrated hydrochloric acid is 38% HCl by mass, and it has a density of 1.189 g/ml at 20 celsius. The density of water at 20 celsius is 0.9982 g/ml. If all the HCl were somehow removed from 1.000 liters of this solution at 20 celsius, what volume of water would remain?