A gas occupies 37. 5 mL at 102. 3 kPa. At 27. 5 mL, what will the pressure be?
Answers
The pressure will be 139.92 kPa at a volume of 27.5 mL.
To answer this question, we will use Boyle's Law formula, which states that the product of the initial pressure (P1) and volume (V1) of a gas is equal to the product of the final pressure (P2) and volume (V2) when the temperature remains constant.
Step 1: Identify the initial pressure (P1), initial volume (V1), and final volume (V2).
P1 = 102.3 kPa
V1 = 37.5 mL
V2 = 27.5 mL
Step 2: Apply Boyle's Law formula, which is P1 * V1 = P2 * V2. We need to find the final pressure (P2).
102.3 kPa * 37.5 mL = P2 * 27.5 mL
Step 3: Solve for P2.
P2 = (102.3 kPa * 37.5 mL) / 27.5 mL
Step 4: Calculate the value of P2.
P2 ≈ 139.64 kPa
At 27.5 mL, the pressure of the gas will be approximately 139.64 kPa.
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Related Questions
Name: Ellie Bair ♡
CONDUCTION, CONVECTION OR RADIATION?
CONDUCTION
THERMAL ENERGY
& heal
Frying an egg
Date: 1/26/23
Fill in each box with the following examples:
Frying an egg, boiling water, toaster, steam from a cup of tea, lava lamp, Ironing clothes,
baking a cake, using a space heater to keep warm when it's cold, the inside of your car
feeling hot on a Summer day, holding hands, chocolate melting in your hand
Answers
Heat is thermal energy and is classified into three types based on the type of transfer from the source to the target body through a suitable medium. They are conduction, convection, and radiation.
Conduction - The process by which heat energy transfers from one hot non-fluid body to a cold non-fluid body in contact without the movement of each is called conduction.
Convection - The process by which heat energy transfers from a hot fluid to a cold fluid in contact with a change in density and molecular movement is called convection.
Radiation- The process by which heat transfers from one hot body to another cold body without any contact or movement is called radiation. This transfer happens by air space.
Thermal energy - The form of energy concerned with the orientation of molecules in a body due to heat content is called thermal energy which is responsible for changes in temperature. These include latent heat, evaporation, and condensation.
The following are the types of heat transfer in the following examples;
Frying an egg - conductionBoiling Water - convectionToaster - convectionSteam from a cup of tea - convectionLava Lamp - convectionIroning Clothes - conductionBaking a cake - radiationUsing a space heater to keep warm when it's cold - convectionThe inside of a Car - convectionFeeling hot on a summer day- radiationHolding Hands - convectionChocolate Melting in hand - radiationHeat transfer depends on the type of medium as well. These media are; conductors, which allow heat to pass easily, insulators that do not allow heat to pass easily, and radiators that allow heat transfer with respect to adjoining air space.
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What is the major product formed upon treatment of (R) 2-bromohexane with sodium cyanide? a. (R) 2-cyano hexane b. (S) 2-cyanohexane c. 1-hexene d. 2-hexene
Answers
The major product formed upon treatment of (R) 2-bromohexane with sodium cyanide is (S) 2-cyanohexane. The correct option is b.
When (R) 2-bromohexane is treated with sodium cyanide (NaCN), a nucleophilic substitution reaction takes place. The nucleophile, cyanide ion (CN⁻), attacks the electrophilic carbon of the bromoalkane, resulting in the replacement of the bromine atom with a cyanide group.
Since the starting compound, (R) 2-bromohexane, has a chirality center at the second carbon atom, the reaction proceeds with inversion of configuration due to the nucleophilic attack at the backside of the molecule. As a result, the major product formed is the (S) enantiomer of 2-cyanohexane.
The reason for this inversion of configuration is due to the SN2 (substitution nucleophilic bimolecular) mechanism, where the nucleophile attacks the carbon atom bearing the leaving group from the opposite side, leading to a complete reversal of stereochemistry.
Therefore, the correct answer is b. (S) 2-cyanohexane, which represents the major product obtained from the reaction between (R) 2-bromohexane and sodium cyanide.
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The table above shows the structural formulas and molar masses for three different compounds. Which of the following is a list of the compounds in order of increasing boiling points?
A. Butane < 1-propanol < acetone
B. Butane < acetone < 1-propanol
C. 1-propanol < acetone < butane
D. Acetone = butane < 1-propanol
Answers
Butane < acetone < 1-propanol is a list of the compounds in order of increasing boiling points.
Which substance has a greater boiling point?The intermolecular interactions between molecules in a compound play a major role in boiling point. Higher boiling temperatures are a result of greater intermolecular interactions, bigger masses, and less branching.
The highest boiling point is for HF. As we go from HF to HI, the van der Waals forces of attraction between all hydrogen halides get stronger.
Boiling point rises as the difference in electronegativity grows. Additionally, the bp grows as the molecule's size does. So the sequence is CO2, CS2, CCl4, and then H2O.
Van der Waals attraction and dipole-dipole attraction draw acetone molecules together.
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NH_3 + H_2O <-> NH_4(+) + OH(-)
Given the dissociation equation for ammonia, would you predict ammonia is a good conductor of electricity? Explain in terms of ions present in solution and level of dissociation. .
Answers
\((NH_4(+))\) No, ammonia is not a good conductor of electricity due to its low level of dissociation and the resulting low concentration of ions in the solution.
Ammonia (NH3) is not a good conductor of electricity in aqueous solution. In the dissociation equation \(NH_3 + H_2O < - > NH_4(+) + OH(-)\) , it can be observed that ammonia (\(NH3\)) reacts with water (H2O) to form ammonium ions \((NH_4(+))\) and hydroxide ions\((OH(-))\).Ammonium ions \((NH_4(+))\) and hydroxide ions \((OH(-))\)are present in the solution and can conduct electricity. However, the level of dissociation of ammonia is relatively low. Ammonia molecules tend to stay intact rather than dissociating into ions. As a result, the concentration of ions in the solution is low, leading to a poor conductivity of electricity.In order for a substance to be a good conductor of electricity, it requires a high concentration of ions and a significant level of dissociation. In the case of ammonia, the limited dissociation hinders the formation of a substantial number of ions in the solution, thereby reducing its conductivity.For more questions on electricity
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Diuris are common orchids found in Australia. The flowers of this species display a large number of variations in color and markings. Insects rely on the ability to learn the specific colors and markings of unfavorable flowers to avoid them in the future.
How is the variation in color and markings beneficial to the orchid plant?
Answers
From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.
Why is color a protection mechanism?This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.
Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.
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If the concentration of nitrosyl bromide in Calculation 4 was was doubled, what would be the effect on the rate of the reaction? What would be the effect on the rate constant?
Here is the info from Calculation 4 (also our unknown was first order if that is helpful):
Answers
If the concentration of nitrosyl bromide is doubled, the rate of the reaction will also increase. This is because the rate of a reaction is directly proportional to the concentration of reactants.
As for the effect on the rate constant, it depends on whether the reaction is affected by the concentration of nitrosyl bromide alone or if other factors like temperature, pressure, or the presence of a catalyst are also influencing the rate constant. If the rate constant is dependent solely on the concentration of nitrosyl bromide, then it will also double when the concentration of the reactant is doubled. However, if other factors are influencing the rate constant, then the effect may be more complex.
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All materials are made of _____________.
A. Insulators
B. Atoms
C. Stuff
D. Conductors
Answers
Answer:
b atoms
Explanation:
everything is made up of atoms
How many moles are in 45.8 g of calcium nitrate, Ca(NO3),?
Answers
Answer:
the number of moles is 0.279
Explanation:
The calculation of the number of moles of calcium nitrate, is given below;
As We know that
Number of moles = mass of substance ÷ molecular weight
where
Mass of substance is 45.8g
And, the molecular weight is 164.088
so,
= 45.8 g ÷ 164.088
= 0.279moles
Thus , the number of moles is 0.279
We simply used the above formula so that the accurate value could arrive
Si se sabe que el bronce se forma con 60% de cobre y 40% de estaño¿cual sera la masa de cobre contenida en 200 gramos de bronce
Answers
Answer:
Mass of copper in 200 g bronze is 120 g.
Explanation:
If it is known that bronze is formed with 60% copper and 40% tin, what will be the mass of copper contained in 200 grams of bronze?
Percentage of copper in bronze = 60 %
Percentage of tin in bronze = 40 %
Mass of bronze = 200 grams
Mass of copper in bronze = 60 % of 200 g
= 0.6 x 200 = 120 grams
Mass of copper in 200 g bronze is 120 g.
How large a net force is required to accelerate a 2000-kg suv from rest with an acceleration of 0. 14 m/s2?.
Answers
A large net force of 280N is required to accelerate a 2000 kg suv from rest with an acceleration of 0.14m/s2 .
According to Newton’s 2nd law of motion, force is equal to the change in momentum per change in time.Acceleration of an object depends on the mass of the object and the amount of force applied.
Force=mass* acceleration
Here, mass is equal to 2000 kg and acceleration is equals to 0.14m/s/s.putting these values,
F= ma
F= 2000kg * 0.14 m/s2
= 280 kg m/s2
=280N
So, 280N of force is required.
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The image shows particles of salt dissolved in water.
How will the arrangement of salt particles most likely change?
Salt particles will move toward the left through diffusion.
Salt particles will move toward the left through active transport.
Salt particles will move toward the right through diffusion.
Salt particles will move toward the right through active transport.
Answers
Answer: Hope it may help you
Explanation:
Diffusion can be defined as the movement of particles from a region where there a more concentration of solute to the region having less concentration of the solute.
Here, the salt particles will move from right side of the box to the left side of the box.
This is because the right side has more particle and the left side has less particles so they will move towards the left side.
Answer:
A
Explanation:
consider the structure of lorazapam. provide numbers only, 6, not six. how many lone pairs does the complete lewis structure have?
Answers
The complete Lewis structure of Lorazepam has 6 lone pairs.
Lewis structures, also known as Lewis dot formulas, electron dot structures, or Lewis electron dot structures, are diagrams that depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.
Lorazepam is a medication used to treat insomnia and anxiety. The time it takes for lorazepam to start working can vary based on the form it is taken in. Specifically, there are a total of 6 lone pairs in the molecule, with two on each of the oxygen atoms and one on each of the nitrogen atoms.
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In order to be able to absorb UV light, a compound must have a(n) _____________________.
Answers
In order to be able to absorb UV light, a compound must have a(n) conjugated system. A compound needs a conjugated system to effectively absorb UV light, as this system allows for the necessary electron movement and energy absorption.
The reason is because:
1. UV light refers to ultraviolet light, which is a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays.
2. A compound is a substance made up of atoms of two or more different elements that are chemically bonded together.
3. A conjugated system refers to a series of alternating single and double bonds in a molecule, where electrons are delocalized and can move freely through the pi orbitals.
4. When a compound has a conjugated system, it allows for greater electron movement, which in turn makes it easier for the compound to absorb energy from UV light.
5. The absorption of UV light promotes electrons from lower energy levels to higher energy levels, causing the compound to become excited. This process is critical for various chemical and biological processes, such as photosynthesis and the detection of certain substances.
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One lawn chair is made of aluminum (c=0.89 j/g°c) and another is made of iron (c=0.45 j/g°c). both chairs are painted the same color. on a sunny day, which chair you want to sit on? why?
Answers
The preferred chair to sit on a sunny day is the one made of aluminum. It offers a more comfortable seating experience compared to the iron chair. The aluminum chair's higher specific heat capacity helps it absorb less heat and stay cooler.
Why is the aluminum chair preferred on a sunny day?Aluminum is the preferred choice for sitting on a sunny day due to its higher specific heat capacity (c=0.89 J/g°C) compared to iron (c=0.45 J/g°C). Specific heat capacity refers to the amount of heat energy required to raise the temperature of a substance by one degree Celsius per gram.
When exposed to the sun, both chairs will absorb heat energy from the sunlight. However, aluminum has a higher specific heat capacity, meaning it can absorb more heat energy per gram compared to iron. This results in the aluminum chair heating up at a slower rate than the iron chair.
The slower rate of heat absorption by the aluminum chair makes it more comfortable to sit on during a sunny day. It will take longer for the aluminum chair to reach an uncomfortable temperature compared to the iron chair, providing a more pleasant seating experience.
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The mass number is equal to the number of blank in the nucleus of the atom
Answers
Answer:
c
Explanation:
what are parts of this water wheel system?
Answers
Answer: Explanation:
Water wheels have several important parts that work together (see diagram).
*Flowing water (delivered via a channel called a mill race)
*Large wooden or metal wheels.
*Paddles or buckets (arranged evenly around the wheel)
*Axle.
*Belts or gears.
For the following reaction, 35.0 grams of zinc oxide are allowed to react with 6.85 grams of water . zinc oxide (s) + water (I) ⟶ zinc hydroxide ( aq ) What is the maximum amount of zinc hydroxide that can be formed? grams What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete?
Answers
10.63 grams of ZnO remain after the reaction is complete.
The balanced chemical equation for the reaction between zinc oxide and water is:
ZnO(s) + H2O(l) → Zn(OH)2(aq)
No. of moles of ZnO = Mass of ZnO / Molar mass of ZnO= 35.0 g / 65.38 g/mol= 0.535 moles of ZnO
The amount of water is given as 6.85 g
The molar mass of water is:H2O = 18.02 g/mol
No. of moles of H2O = Mass of H2O / Molar mass of H2O= 6.85 g / 18.02 g/mol= 0.380 moles of H2O
Now, we need to find out the limiting reagent.
.No. of moles of Zn(OH)2 formed from 0.535 moles of ZnO = 0.535 molesNo. of moles of Zn(OH)2 formed from 0.380 moles of H2O = 0.380 moles
Therefore, since the amount of ZnO (0.535 moles) is greater than the amount of H2O (0.380 moles), H2O is the limiting reagent and ZnO is the excess reagent.
The maximum amount of Zn(OH)2 that can be formed is given by the amount of ZnO that reacts with H2O, which is 0.380 moles.
No. of grams of Zn(OH)2 = No. of moles of Zn(OH)2 × Molar mass of Zn(OH)2= 0.380 mol × (97.41 g/mol)= 37.08 gThe formula for the limiting reagent is H2O. The amount of excess reagent remaining after the reaction is complete can be calculated by subtracting the amount of limiting reagent used from the initial amount of excess reagent
.Initial amount of excess reagent (ZnO) = 35.0 g
No. of moles of ZnO = Mass of ZnO / Molar mass of ZnO= 35.0 g / 65.38 g/mol= 0.535 moles of ZnO
Amount of ZnO used in the reaction = No. of moles of Zn(OH)2 formed × Ratio of ZnO to Zn(OH)2= 0.380 mol × (1 mol ZnO / 1 mol Zn(OH)2)= 0.380 moles of ZnO used
Amount of ZnO remaining after the reaction = Initial amount of ZnO − Amount of ZnO used= 35.0 g − (0.380 mol × 65.38 g/mol)= 10.63 g
Therefore, 10.63 grams of ZnO remain after the reaction is complete.
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A compound has a TH NMR signal around 0 10.0 ppm. What structural feature is likely to be present in the compound? a) A cyclohexyl ring b) A carbon-carbon triple bond c) An aromatic ring d) A hydroxyl group e) A carbonyl group f) An aldehyde
Answers
The structural feature likely to be present in the compound is a carbonyl group (e).
A chemical shift of around 10.0 ppm in the TH (proton) NMR spectrum suggests the presence of a carbonyl group. Carbonyl groups, such as those found in aldehydes, ketones, esters, and carboxylic acids, typically exhibit signals in the region between 9.0 and 10.5 ppm in the proton NMR spectrum.
This chemical shift range arises due to the deshielding effect caused by the electron-withdrawing nature of the carbonyl group. The carbon-oxygen double bond in the carbonyl group pulls electron density away from the attached hydrogen atom, making it more susceptible to the influence of the magnetic field and resulting in a higher chemical shift value.
Based on the provided information, the presence of a TH NMR signal around 10.0 ppm suggests the presence of a carbonyl group in the compound.
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What's the difference between polar and nonpolar?
Answers
The distinction between polar and nonpolar molecules is important in many areas of chemistry, including biochemistry, pharmacology, and materials science.
Polarity refers to the distribution of electrical charge in a molecule or compound. In chemistry, polar and nonpolar are used to describe the nature of chemical bonds between atoms.
Polar molecules have a net dipole moment, meaning that the electrons in the molecule are not evenly distributed, creating a positive and negative end. This creates a separation of charge, and the molecule has a positive and negative end. Water is a common example of a polar molecule. The oxygen atom in water has a slightly negative charge, while the hydrogen atoms have a slightly positive charge.
Nonpolar molecules, on the other hand, have a symmetric distribution of electrons, meaning that the electrons in the molecule are evenly distributed. This creates a lack of separation of charge, and the molecule has no positive or negative end. An example of a nonpolar molecule is methane (CH4). The electrons are evenly distributed among the carbon and hydrogen atoms, creating a symmetric molecule with no separation of charge.
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Reactions review please help
Answers
What atom tends to not form an ion of any sort
Answers
Consider the word equation.
calcium hydroxide + hydrochloric acid → calcium chloride + water
Which is the corresponding formula equation?
A: CaCl2(1)→ Ca(s) + Cl2(g)
B: O CaO(s)+ H2O(1)>Ca(OH)2(aq)
C: NaOH(aq) + 2HCl(aq) → NaCl(aq) + 2H2O(1)
D: Ca(OH)2(S) + 2HCI(I) → CaCl2(aq) + 2H20(1)
Answers
The chemical equation for the given word equation is Ca(OH)\(_2\)(S) + 2HCI(I) → CaCl\(_2\)(aq) + 2H\(_2\)0(1). Therefore, the correct option is option D.
Chemical equations are symbols or chemical formulas that depict a chemical reaction symbolically. With a plus sign separating the entities in the reactants and products, the reactant objects are listed on the left as well as the result entities are listed on the right.
An arrow indicating the reaction's direction points in the path of the products. The chemical formulas could be mixed, symbolic, or structural. The critical values of a stoichiometric figures are shown as coefficients beside the symbols as well as formulas of the various entities. The chemical equation for the given word equation is Ca(OH)\(_2\)(S) + 2HCI(I) → CaCl\(_2\)(aq) + 2H\(_2\)0(1).
Therefore, the correct option is option D.
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Someone know the answer for that question
Answers
Reset the simulation again. Set the ruler at 50 and the left platform at 20. Don't add any molecules yet. Predict what will happen when you add 30 molecules of substance A. Why do you think this will happen?
Answers
Answer:
The conversion of substance A to substance B will happen extremely slowly because of the very high activation energy that each molecule must obtain to convert.
Explanation:
Plato answer
The conversion of substance A to substance B will happen extremely slowly.
What are molecules?A molecule is two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance.
The conversion of substance A to substance B will happen extremely slowly because of the very high activation energy that each molecule must obtain to convert.
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Which commercial technology commonly uses plasmas?
a radio
a race car
a television
a microwave oven
Answers
The correct answer is C. A television
Explanation:
Plasma is a particular state of matter that differs from liquid, solid, and gas because plasma is a gas but contains mainly particles that have lost their electrons or ions. This makes plasma have properties other states do not have. Additionally, plasma is now widely used in technologies, including televisions, this is because plasma is used in thousands of small containers to create the images in a Tv. This leads to high quality and precise images. Therefore, the commercial technology that commonly uses plasmas is a television.
Answer:
c
Explanation:
edge
Balance this equation
Fe2O2 + C -> Fe + CO2
Answers
2 FeO + 1 C ===》2 Fe + 1 CO2
Explanation:
Fe2O2+C-----> 2Fe+CO2
balanced equation..
hope it helps.
stay safe healthy and happy.......Using the Periodic Table, Which of the following has the largest atomic radius/size?
So
Ti
О а
Ob
Ос
Od
Y
Zr
Answers
Answer:
vp jokhimon vf dpp gl fl vk hggjuvg7vvohohohohojj
2. 93g of N2 fills a volume of 17. 3 L at a temperature of 40 °C. What is the pressure of the N2 in atmospheres?
Answers
The pressure of N₂ in the atmosphere at the given volume and temperature is 3.00 atm, which can be solved using ideal gas law equation.
A key equation in thermodynamics, the ideal gas law connects a gas's pressure, volume, temperature, and number of moles. As per the ideal gas law,
PV = nRT
where P is the gas's pressure, V is its volume, n is its number of moles, R is its gas constant, and T is the gas's temperature in Kelvin.
Firstly, we would determine the number of moles of N₂:
n = m/MW
where m is the mass of N₂ and MW is the molecular weight.
MW of N₂ = 28.0134 g/mol
Thus, n = 93 g / 28.0134 g/mol
n = 3.3192 mol
Now, we would convert the temperature from Celsius to Kelvin:
T = 40°C + 273.15
T = 313.15 K
Now we can solve for the pressure:
P = nRT / V
P = (3.3192 mol) x (0.08206 L atm/mol K) x (313.15 K) / (17.3 L)
P = 3.00 atm
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d. i) Describe the structure of an atom.
Answers
Answer:
An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton).
Answer:
Atoms consist of an extremely small, positively charged nucleus in which the protons and neutrons can be found, and is surrounded by a cloud of negatively charged electrons.
Calculate the number of grams Fe2O3 produced from 8.93 g 02.
4 Fe +302 → 2 Fe2O3
Answers
Hey there!:
Molar mass :
Fe₂O₃ = 159.69 g/mol
O₂ = 31.99 g/mol
By reaction stochiometry :
4 Fe + 3 O₂ = 2 Fe₂O₃
3 * (31.99 g O₂ ) ------------------ 2 * ( 159.69 ) g Fe₂O₃
8.93 g O₂ --------------------------- ( mass O₂)
mass O₂ = ( 8.93 * 2 * 159.69 ) / ( 3 * 31.99 )
mass O₂ = 2852.0634 / 95.97
mass O₂ = 29.71 g Of Fe₂O₃
Hope this helps!