One mole of an ideal gas is expanded from a volume of 1.00 L to a volume of 10.18 L against a constant external pressure of 1.07 atm. Calculate the work. (1 L•atm = 101.3 J)
Question 20 options:
A)
–9.82 J
B)
–0.0970 J
C)
9.95 J
D)
–9.30 × 102 J
E)
–9.95× 102 J
Answers
The work done by the gas in the given scenario is approximately -994 J. This corresponds to option E) -9.95 × 10² J as the closest value.
To calculate the work done by the gas, we can use the formula:
Work = -Pext * ΔV
where Pext is the external pressure and ΔV is the change in volume.
Given:
Pext = 1.07 atm
ΔV = 10.18 L - 1.00 L = 9.18 L
Converting the units of pressure from atm to J/L (using the conversion factor 1 L•atm = 101.3 J), we have:
Pext = 1.07 atm * 101.3 J/L = 108.291 J/L
Now we can calculate the work:
Work = -Pext * ΔV
= -(108.291 J/L) * (9.18 L)
= -993.86538 J
Rounding to the appropriate number of significant figures, the work done by the gas is approximately -994 J.
Among the given options, the closest value to -994 J is option E) -9.95 × 10² J.
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Related Questions
. 11 gallons of gasoline for $26.29
or 6 gallons of gasoline for $14.45?
Answers
Answer:
6 gallons of gasoline for $14.45 is the best price
Explanation:
26.29/11=2.39 $ per gallon
14.45/11=1.31 $ per gallon
Explain how a true acid wave, with a pH below 7.0, can cause the hair to swell.
Answers
Answer:
Services raise the pH in the hair to a alkaline state in order to soften and swell the hair shaft. Disulfide, hydrogen, salt. Side bonds are responsible for the strength and elasticity of the hair. Altering these is what make wet setting, thermal styling, permanent waving, curl reforming, and relaxing possible
A pH of 7 is neutral, a pH below 7 is acidic, and pH above 7 is alkaline. ... Chemical Texturizers raise the pH of the hair to an alkaline state in order to soften and swell the hair shaft. This action lifts the cuticle layer, and allows the solution to reach the cortex layer where restructuring takes place.
Explanation:
A glucose solution has a volume of 2.0L and it contains 72g of glucose (C6H12O6). If glucose has a
molecular weight of 180g, what is the Molarity of this solution?
Answers
Answer:
0.2 mol/dm³
Explanation:
Glucose = C₆H₁₂O₆
Mr = 180
1 mole of glucose is 180g
The ratio of the moles of glucose we have to the mass is going to be the same as the ratio of 1 mole to 180g;
In other words, we can formulate an equation and solve to find the number of moles we have (we'll let it be x):
ˣ/₇₂ = ¹/₁₈₀
x = ⁷²/₁₈₀
x = 0.4
The solution we have has 0.4 moles of glucose;
A key concept in calculating or finding a particular variable or quantity such as concentration is the units, they give major clues as to how to calculate said variable when you consider it logically;
Molarity (or equally, concentration) is the number or moles of a substance found in a given volume of solution;
The units are typically mol/dm³;
mol stands for moles and dm³ is a measure of volume (1 dm³ = 1 L);
If we therefore want to find the molarity, we need to divide moles by volume;
Recognising that 1 L = 1 dm³, we can see we have the moles of glucose, calculated above, and the volume of the solution (2 L or 2 dm³);
Then, to get the molarity (M), we simply calculate:
M = 0.4/2
M = 0.2
What is the percent by mass of NaCl in solution if 4. 5 grams NaCl is present in 500g of solution?
Answers
Answer
Explanation:
he most recent Ebola virus outbreak in West Africa, which was unprecedented in the number of cases and fatalities, geographic distribution, and number of nations affected, highlights the need for safe, effective, and readily available antiviral agents for treatment and prevention of acute Ebola virus (EBOV) disease (EVD) or sequelae1. No antiviral therapeutics have yet received regulatory approval or demonstrated clinical efficacy. Here we report the discovery of a novel small molecule GS-5734, a monophosphoramidate prodrug of an adenosine analogue, with antiviral activity against EBOV. GS-5734 exhibits antiviral activity against multiple variants of EBOV and other filoviruses in cell-based assays. The pharmacologically active nucleoside triphosphate (NTP) is efficiently formed in multiple human cell types incubated with GS-5734 in vitro, and the NTP acts as an alternative substrate and RNA-chain terminator in primer-extension assays using a surrogate respiratory syncytial virus RNA polymerase. Intravenous administration of GS-5734 to nonhuman primates resulted in persistent NTP levels in peripheral blood mononuclear cells (half-life, 14 h) and distribution to sanctuary sites for viral replication including testes, eyes, and brain. In a rhesus monkey model of EVD, once-daily intravenous administration of 10 mg kg−1 GS-5734 for 12 days resulted in profound suppression of EBOV replication and protected 100% of EBOV-infected animals against lethal disease, ameliorating clinical disease signs and pathophysiological markers, even when treatments were initiated three days after virus exposure when systemic viral RNA was detected in two out of six treated animals. These results show the first substantive post-exposure protection by a small-molecule antiviral compound against EBOV in nonhuman primates. The broad-spectrum antiviral activity of GS-5734 in vitro against other pathogenic RNA viruses, including filoviruses, arenaviruses, and coronaviruses, suggests the potential for wider medical use. GS-5734 is amenable to large-scale manufacturing, and clinical studies investigating the drug safety and pharmacokinetics are ongoing.
Main
The 2013–2016 outbreak of EVD in West Africa was the largest and most complex EBOV outbreak in the recorded history of the disease, with >28,000 EVD cases and >11,000 reported deaths1. Medical infrastructures in Guinea, Sierra Leone, and Liberia were seriously impacted by a loss of >500 healthcare workers1. Additionally, EVD-related sequelae (joint and muscle pain, as well as neurological, ophthalmic, and other symptoms) together with viral persistence and recrudescence in individuals who survived the acute disease have been documented2,3,4,5.
EBOV is a single-stranded negative-sense non-segmented RNA virus from the Filoviridae family. In addition to EBOV, other related viruses, namely Marburg, Sudan, and Bundibugyo viruses, have caused outbreaks with high fatality rates6. Although the efficacy of various experimental small molecules and biologics have been assessed in EVD animal models and in multiple clinical trials during the West African outbreak7,8,9,10,11,12,13,14,15,16,17,18, there are no therapeutics for which clinical efficacy and safety have been established for treatment of acute EVD or its sequelae. The availability of broadly effective antiviral(s) with a favourable benefit/risk profile would address a serious unmet medical need for the treatment of EBOV infection.
A 1′-cyano-substituted adenine C-nucleoside ribose analogue (Nuc) exhibits antiviral activity against a number of RNA viruses19. The mechanism of action of Nuc requires intracellular anabolism to the active triphosphate metabolite (NTP), which is expected to interfere with the activity of viral RNA-dependent RNA-polymerases (RdRp). Structurally, the 1′-cyano group provides potency and selectivity towards viral RNA polymerases, but because of slow first phosphorylation kinetics, modification of parent nucleosides with monophosphate promoieties has the potential to greatly enhance intracellular NTP concentrations20. GS-5734, the single Sp isomer of the 2-ethylbutyl L-alaninate phosphoramidate prodrug (Supplementary Information), effectively bypasses the rate-limiting first phosphorylation step of the Nuc (Fig. 1a). In human monocyte-derived macrophages, incubation with GS-5734 caused rapid loading of cells with high levels of NTP that persist with a half-life (t1/2) of 24 h following removal of GS-5734 (Extended Data Fig. 1a), resulting in up to 30-fold higher levels compared to incubation with Nuc (Fig. 1b). In cell-based assays, GS-5734 is active against a broad range of filoviruses including Marburg virus and several variants of EBOV (Fig. 1c). GS-5734 inhibits EBOV replication in multiple relevant human cell types including primary macrophages and human endothelial cells with half-maxi
How many molecules are in 5.50 moles of sulfer dioxide
Answers
Answer:
(5.50) ( 6.02 *10^23)
Explanation:
The number of molecules equals the number of moles times Avagadro's number.
How many molecules of sucrose are
in 205 g C12H22011?
(C12H22O11, 342.34 g/mol)
[?]
[? ]×10¹²] molecules C12H22O11
Coefficient (green) Exponent (yellow)
I
Enter
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Answers
To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:
The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.
Is sucrose a good sugar to use?
Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.
Is sugar a healthy food?
Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.
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essential amino acid found in milk eggs and other foods
Answers
One essential amino acid found in milk, eggs, and other foods is called "leucine." Leucine is an essential amino acid, which means that our bodies cannot produce it and we must obtain it from our diet.
Leucine plays a crucial role in protein synthesis and muscle repair. It is also involved in regulating blood sugar levels, promoting wound healing, and producing growth hormones. It is especially important for athletes and individuals engaging in regular exercise, as it helps support muscle growth and recovery.
Apart from milk and eggs, other food sources rich in leucine include meat (such as beef, pork, and poultry), fish, soybeans, nuts, seeds, and legumes. Including a variety of these foods in your diet can help ensure an adequate intake of leucine and other essential amino acids.
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During ________________________, a new nuclear membrane forms around eachgroup of chromosomes.
Answers
Answer:
Telophase
Explanation:
I looked up the ending lol!hope this helps
FILL IN THE BLANK At 298 K and 1 atm, bromine is a liquid with a high vapor pressure, whereas chlorine is a gas. This provides evidence that, under these conditions, the forces among Br2 molecules are _______ than those among Cl2 molecules
Answers
Answer: stronger
Explanation: At higher temperatures, Br2 takes more energy to break apart the molecules. Therefore, the intermolecular forces, most likely london dispersion, will need more energy. Cl2 has weaker forces and takes less to break it apart.
How many electron shells/orbitals does the element Krypton (Kr) have?
Answers
Answer:
Krypton has 4 orbital shells
Extra Information:
Krypton has 36 electrons which are arranged in these 4 orbit shells,
The order in which electrons are arranged in these shells is 2,8,18,8
Which type of cloud forms close to the ground when the temperature is just above the dew point?
cirrus
cumulus
fog
stratus
Answers
Answer:
stratus
Explanation:
The type of cloud that forms close to the ground when the temperature is just above the dew point would be stratus.
Stratus cloud forms when moisture condenses at low-level as a result of light air current pushing cold air above a pocket of warm air.
Stratus clouds are the most similar to fog among all the cloud types because both are formed at low altitudes. However, while fogs are formed from ground moisture, stratus clouds are formed from air moisture.
Answer: C-fog
Explanation: Cirrus, cumulus, and stratus, all form high. Fog forms low.
What is the molarity of a solution in which 55.49 g of calcium chloride is dissolved in enough water to make 500. ml of solution?
Answers
The molarity of a solution in which 55.49 g of calcium chloride is dissolved in enough water to make 500. ml of solution will be 1M.
The quantity of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The term "molarity" can also refer to a solution's molar concentration.
Calculation of molarity is shown as:
Given data:
Mass of \(CaCl_{2}\) =55.49g
Molar mass of \(CaCl_{2}\) =40+35+35=110g
Moles = mass / molar mass
Moles = 55.43 / 110
Moles = 0.50 mol
Molarity can be calculated by using the formula:
Molarity = moles of solute / solution
Molarity = 0.5 × 1000 / 500
Molarity = 1 M
Therefore, the molarity of the calcium chloride solution will be 1 M.
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Why do the planets in our solar system orbit in approximately the same plane around the sun?
Answers
http://curious.astro.cornell.edu/about-us/57-our-solar-system/planets-and-dwarf-planets/orbits/242-why-do-all-the-planets-orbit-in-the-same-plane-intermediate
Which reason best explains why plasmas are good conductors of electricity? They have mobile charged particles. They are at extremely high temperatures. They are made up of particles in fixed positions. They have slow-moving nuclei that carry electricity.
Answers
Answer:
They have mobile charged particles.
Explanation:
Plasma refers to very hot matter such that the electrons in matter are ripped away from the atoms leading to the formation of an ionized gas.
We know that the carriers of electricity are charged particles. Any state of matter that has an abundance of charge carriers will definitely be a good conductor of electricity.
Therefore, plasmas are good conductors of electricity because they have a lot of mobile charged particles.
25. 22 the reaction of phenylmagnesium bromide with methyl benzoate followed by acidification produces triphenylcarbinol. what are the sources of phenyl groups in triphenylcarbinol?
Answers
Triphenylcarbinol( or triphenylmethanol) gets its phenyl groups from phenylmagnesium bromide.
Synthesis of triphenylcarbinol:
A typical laboratory experiment for demonstrating the Grignard reaction is the synthesis of triphenylmethanol using methyl benzoate, benzophenone, and phenylmagnesium bromide. Diethyl carbonate is a possible starting material.
Characteristics:
An organic substance is a triphenylmethanol. It is a white, crystalline substance that dissolves well in alcohol, diethyl ether, and benzene but not in water or petroleum ether. Due to the creation of a persistent "trityl" carbocation, it generates a bright yellow hue in very acidic solutions. Important dyes include several triphenylmethanol derivatives.Triphenylmethanol has a core tetrahedral carbon atom, three phenyls (Ph) rings, and an alcohol group attached to it. With lengths of around 1.47Å for all three C-Ph bonds and 1.42Å for the C-O link, these connections are characteristic of sp3-sp2 carbon-carbon bonds.Three neighboring phenyl groups give off specific qualities that are reflected in the alcohol's reactivity.Learn more about triphenylmethanol here:
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PLEASE HELP ASAPP!!!!! WILL MARK BRAINLIEST
if 500 g of iron absorbs 22000 cal of heat, what will be the change in temperature? (specific heat of iron = 0.11 cal/gC)
Answers
Answer:
400°C
Explanation:
22,000 cal / (0.11 cal/g°C x 500 g) = 400°C
Answer:
400 C degree change
Explanation:
22 000 cal = 500 g * (C) * .11 cal / g-C
C = 22 000 / (500*.11) = 400 C degree change
A rock mass is 100g. Determine the density of the rock if it has a volume of 20cm3.
Answers
Answer:
The answer is 5.0 g/cm³Explanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume} \\\)
From the question
mass = 100 g
volume = 20 cm³
We have
\(density = \frac{100}{20} = \frac{10}{2} \\ \)
We have the final answer as
5.0 g/cm³Hope this helps you
How many ml are in 3,764liters?
Hint: ‘mili’ means a thousandth (1/1,000)
Round your answer to the nearest whole number
Answers
Answer:
Your answer I think would be 3,764,000 .If Im wrong please correct me and comment below.
I got my answer by converting 3,764 liters to millileters using a converter calculator
then I rounded it to the nearest whole number using the rounding calculator from calculator soup. This has worked for me in the past.
Hope this helps, good luck!
]
Consider the following intermediate chemical equations.
C(s) +
CO(g) +
O₂(g) → CO(g)
How will oxygen appear in the final chemical equation?
O O2(g) as a product
O O2(g) as a reactant
OO(g) as a product
O 20(g) as a reactant
O₂(g) → CO₂(g)
Answers
In the above intermediate chemical equation, oxygen will appear as follows: O₂(g) as a reactant (option B).
What is a chemical equation?A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.
According to this question, an intermediate chemical equation is presented as follows:
CO(g) + O₂(g) → CO(g)C(s) + O₂(g) → CO₂(g)As observed in the above chemical equation, oxygen will react in its gaseous form i.e. as a reactant.
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100 PTS IM DESPERATE NEED BY TOMMOROW
Answers
Answer:
rest will do later mom is calling me plz understand promise will do it
Explanation:
Elements and compounds are similar in that they are both made of atoms and in some cases molecules.Methods of Breaking Down CompoundsThe only way to break down a compound is through a chemical change. Sometimes, energy is needed for a chemical change to happen. Two ways to add energy to break down a compound are to apply heat and to apply an electric current.Answer:
lol
Explanation:
its 5 points
How is melting similar to freezing? How is it different?
Answers
Melting and freezing refer to the changes in state which occur when the solid and liquid states interchange. Melting occurs when a solid is heated and turns to a liquid and freezing occurs when a liquid is cooled and turns to a solid.
Answer:
Melting and freezing both require energy, however melting involves the speeding up of molecules, and freezing involves slowing them down
Explanation:
Which chemical leads to a pleasurable sensation when released in the brain, such as in response to nicotine?.
Answers
One of these neurotransmitters, dopamine, is released in the reward area of the brain and results in pleasurable feelings and an uplifted mood. More nicotine is required to feel good the more you smoke.
What is Nicotine ?The nightshade plant family naturally produces nicotine, an alkaloid that is widely used recreationally as a stimulant and anxiolytic. It is a medication meant to decrease withdrawal symptoms in smokers who desire to quit.
Nicotine is a highly addictive and dangerous drug. It might cause a rise in blood pressure, an increase in heart rate, and arterial constriction (vessels that carry blood). The hardening of artery walls, which may lead to a heart attack, is another potential effect of nicotine.Learn more about Nicotine here:
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Please hurry Which of the following statements is true?
• A positively charged atom has more electrons than protons.
• A positively charged atom has more protons than neutrons.
• A positively charged atom has more neutrons than protons.
• A positively charged atom has no electrons.
• A positively charged atom has more protons than electrons.
Answers
Answer:
E, answer 5, A positively charged atom has more protons than electrons.
Explanation:
in ________ only one parent organism produces offspring
Answers
I believe the answer should be Asexual Reproduction.
What would happen to the biodiversity index of an ecosystem if a change in the ecosystem caused the number of species to stay the same and the total number of individuals to increase?
1-The biodiversity index would stay the same
2-The biodiversity index would decrease
3-The biodiversity would increase, and then decrease
4-The biodiversity index would increase
Answers
If a change in the ecosystem caused the number of species to stay the same and the total number of individuals to increase then The biodiversity index would increase".
An ecosystem's efficiency (the quantity of food energy transformed into biomass) and the quality of its services (which frequently include preserving the soil, cleaning the water that runs through it, as well as providing food and shade, etc.) both decrease with declining biodiversity.
An ecosystem's efficiency (the quantity of food energy transformed into biomass) as well as the quality of its services (which frequently include preserving the soil, cleaning the water which flows through it, as well as providing food as well as shade, etc.) both decrease with declining biodiversity.
Therefore, the correct option will be (4)
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does having the same temperature always mean having the same amount of heat? Defend your answer.
Answers
Answer:
No,
Explanation:
No, heat and temperature are closely related but having the same temperature doesn't always mean having the same amount of heat. The definition of heat is the transfer of energy from one object to another due to a difference in temperature. Whereas temperature means how fast the molecules in an object are moving. For instance, we attribute to objects that have a high temperature that they're hot, whereas those with lower temperatures are cold. So what you're asking is an object that has molecules moving at a certain rate has the same amount of the transfer of energy from one object to another due to a difference in temperature. Ok, now I'm confused but I'm still veering towards no as my answer, that is unless anyone can persuade me as to why the answer's yes.
How many atoms are in 34.2 grams of carbon?
Answers
Answer:
6.02*1022
Explanation:
I don't know why
what is the symbiotic relationship of bighorn sheep and worms
Answers
Answer:
Lungworms live in the lungs of bighorn sheep causing them to be sick, or even die.
Explanation:
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C3H8 +502 3CO₂ + 4H₂O + energy
Which type of reaction is shown?
(1 point)
O displacement
O combination
O decomposition
O combustion
Answers
Answer:
Combustion
Explanation:
All combustion reactions have carbon and hydrogen as reactants (and sometimes oxygen) and will always produce CO2 and water.
Water is a compound not a mixture. Justify this statement by giving two reasons.
Answers
Answer:
Water is a compound and not a mixture. The reasons are the following:
1) It is held tightly through bonds called chemical bonds which is the characteristic of compound and not mixture.
2) It cannot be separated by physical means but can be separated by chemical means.
Answer:
⇒ Water is formed from a chemical bond, the molecule cannot be separated physically. Water can be separated into hydrogen and oxygen by a chemical reaction.
⇒ Compounds are made up of different elements. Water is made up of hydrogen and oxygen, which are two different elements. Hydrogen and oxygen form a compound known as water.