Answer: If 550 ml of gas at 1 atm expands to 960 ml, the pressure will be 0.57 atm.
Explanation:
It is an exercise of Boyle's Law that says: "At constant temperature the volume of a mass of a gas is inversely proportional to the pressure it exerts".
This means that if the volume is doubled the pressure is halved, and if the pressure is increased three times as much, the volume will be one third (1/3) of what it originally was.
The word inversely proportional means that if the pressure increases the volume decreases but proportionally.
550 mL of gas at I atm is expanded to 960 mL. What will the pressure be?
Data:
V₁ = 550 mL
P₁ = 1 atm
V₂ = 960 mL
P₂ = ?
The formula of this law is:
P₁V₁ = P₂V₂Where
P₁ = Initial pressureV₁ = Initial volumeP₂ = Final pressureV₂ = Final volumeHe asks us what the pressure would be after 960 mL, we solve the formula for the final pressure, then
[tex]\boxed{\bold{P_1V_1=P_2V_2 \iff \ P_2=\frac{P_1V_1}{V_2} }}[/tex]
We substitute our data in the cleared formula and solve:
[tex]\boxed{\bf{P_2=\dfrac{(1 \ atm \ \times \ 550\not{mL}) }{960\not{mL}} }}[/tex]
[tex]\boxed{\bf{P_2=0.57 \ atm }}[/tex]
If 550 ml of gas at 1 atm expands to 960 ml, the pressure will be 0.57 atm.
one of the stable isotopes of lithium has 3 protons and 4 neutrons, so its atomic mass is 7. assume that a lithium atom initially at rest radiates a photon of energy 1.8488 ev and recoils. how long does it take for the recoiling atom to travel 1 mm? assume that the lithium atom travels in a straight line without any collisions. note: 1 amu
The time it takes for the recoiling lithium atom to travel 1 mm depends on the velocity of the atom after the photon is emitted.
The velocity of the atom can be calculated using the conservation of momentum: the momentum of the atom before the photon is emitted and the momentum of the photon must be equal to the momentum of the atom after the photon is emitted.
The mass of the lithium atom is 7 amu, and the energy of the photon is 1.8488 eV. The momentum of the photon is then given by E/c, or 1.8488eV/2.99792458e8 m/s, which is approximately 6.14e-24 kg m/s.
Assuming that the atom starts from rest, the momentum of the atom after the photon is emitted is also 6.14e-24 kg m/s. This gives us the velocity of the atom after the photon is emitted. The time it takes for the atom to travel 1 mm is then equal to the distance travelled (1 mm) divided by the velocity of the atom (6.14e-24 kg m/s). This gives us a time of 1.63e-17 seconds, or 16.3 femtoseconds.
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explain why the particle size of the perovskite increases when synthesised at a higher temperature and predict with explanation how the particle size would change upon increasing the reaction time
The particle size of perovskite increases when synthesized at a higher temperature because high temperature promotes faster nucleation and growth of the perovskite crystals.
The high temperature provides more thermal energy for the reaction, which causes the molecules to diffuse more quickly and collide more frequently, leading to an increased rate of nucleation and crystal growth.
If the reaction time is increased, the particle size may increase or remain unchanged, depending on the specific synthesis conditions. If the reaction conditions are such that the rate of crystal growth is limited by the availability of reactants, then increasing the reaction time will result in larger particle size. On the other hand, if the reaction conditions are such that the rate of crystal growth is limited by other factors, such as the rate of surface transport of reactants or the rate of crystal-crystal interactions, then increasing the reaction time may not result in any significant change in particle size.
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Some people think that hydroelectric and solar power should be used to supply all of the electricity for the United States. Which of the following would be a flaw in this plan?
There are several places where wind power can indeed be employed. The following could pose a problem with this strategy
By wind power, what do you mean?When the breeze is used to produce mechanical or electrical energy, the process is known as wind power of wind energy. Wind turbines produce mechanical power from the kinetic energy of the wind.
Where does wind energy come from?The rotor blades of contemporary wind turbines are rotated by the wind, which transforms kinetic energy to rotational energy. A shaft that connects to the generator transfers this rotational energy, resulting in the creation of electrical energy.
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Answer: its C trust
Explanation:
energy flows through our system that consists of the stove the pan the boiling water and the air around these objects which of the following statements describe it the direction that energy is moving the systems left out
Conduction, best describe the direction that energy is moving the systems left out. Energy is the ability to perform work in physics.
What is energy?Energy is the ability to perform work in physics. It might exist in several different forms, such as potential, kinetic, thermodynamic, electrical, chemical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred through one body to the other. Motion is a property of all energy types. For instance, if a body is moving, it possesses kinetic energy.
Energy flows through our system that consists of the stove the pan the boiling water and the air around these objects. Conduction, best describe the direction that energy is moving the systems left out.
Therefore, conduction, best describe the direction that energy is moving the systems left out.
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HELP
Combustion Reactions : Fuel +O2 (g)->CO2 (g) +H2O(g)
Hexane , C6H14(l) oxygen ( g ) ->carbon dioxide ( g ) water ( g )
Combustion reactions involve the oxidation of a fuel by oxygen gas to produce carbon dioxide and water.
Combustion reactionsC6H14 (l) + 15O2 (g) -> 6CO2 (g) + 7H2O (g).In the case of hexane (C6H14), the combustion reaction is C6H14(l) + 9O2(g) -> 6CO2(g) + 7H2O(g).The hexane is oxidized by the oxygen to form six molecules of carbon dioxide and seven molecules of water.The hexane is the fuel, while the oxygen is the oxidizing agent.The reaction is exothermic and releases a large amount of energy.This energy is typically used to do work, such as heating and powering engines.Combustion reactions are important for producing energy in the form of heat, light, and motion, and are also necessary for the production of many of the materials used in everyday life.Combustion reactions involve the burning of a fuel with oxygen to produce carbon dioxide and water. In the combustion of hexane, C6H14(l), the hydrocarbon reacts with oxygen gas (O2) to produce carbon dioxide gas (CO2) and water vapor (H2O). The balanced chemical equation for this reaction is:2 C6H14(l) + 19 O2(g) -> 12 CO2(g) + 14 H2O(g).
The reaction is exothermic, meaning that heat is released when the reaction takes place. This heat helps to further break down the molecules of hexane, allowing the reaction to proceed. The reaction can be thought of as a combination of oxidation and combustion. The oxygen molecules oxidize the carbon atoms in the hexane, causing them to break down and bind to the oxygen molecules. The result is the production of carbon dioxide and water, the products of combustion. The reaction also produces large amounts of energy, which is released in the form of heat and light.To learn more about Combustion reactions refer to:
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If triangle abc is isosceles where an=bc and m
△ABC is an isosceles right-angled triangle If triangle abc is isosceles where Mole an=bc and m
What is mole and its formula?One mole of any substance is equal to the value of 6.023 x 1023. It can be used to measure the products obtained from the chemical reaction. The unit is denoted by mol. The formula for the number of moles formula is expressed as. Number of Moles = Mass of substance / Mass of one mole.
What is mole explained simply?The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter. A mole is defined as the amount of substance containing the same number of discrete entitie
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metals outnumber nonmetals on the periodic table because most of the elements a) are close to having a full octet b) have 1 to 2 valence electrons c) have high ionization energy d) have high electronegativity
The correct answer is option (b): metals outnumber nonmetals on the periodic table because most elements have 1 to 2 valence electrons.
Valence electrons are the outermost electrons of an atom and are involved in chemical bonding. Since metals have fewer valence electrons than nonmetals, they tend to outnumber nonmetals on the periodic table.
This is because metals are more likely to form cations (positively charged ions) when they release their valence electrons, while nonmetals are more likely to form anions (negatively charged ions) when they accept additional valence electrons. This overall imbalance of positive and negative charges leads to metal atoms outnumbering nonmetals on the periodic table.
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4. All materials are made of atoms and molecules that are always
5.
motion is
The energy of atoms and molecules due to their
is the energy carried by an electric current.
Atoms and molecules are the fundamental building blocks of all materials, and they are always in motion due to their kinetic energy.
What is kinetic energy?Kinetic energy is a type of energy that is associated with the motion of an object. It is the energy of a moving object, or the energy that an object possesses due to its motion. Kinetic energy can be calculated by multiplying half of an object’s mass by its velocity squared.
This kinetic energy is the energy carried by an electric current, which is created when the atoms and molecules move and interact with each other. This kinetic energy is the source of many of the properties of materials, such as conductivity and elasticity.
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usually if you see oh you know you are seeing a base. what type of compound is the main exception to this rule?
The base of OH: The exceptions to this rule are metal carbonates like Na2(CO)3 and Lewis bases like amines (NH3, RNH2).
The chemical compound known as washing soda has the formula Na2CO3. 10H2O. Sodium carbonate is present as an inorganic hydrate. Its name, soda ash, comes from the fact that it was made from plants whose ashes were taken from soils rich in salt. The alkalinizing sodium salt of carbonic acid is called sodium carbonate. Sodium carbonate dissolves in water to produce carbonic acid and sodium hydroxide. Strong base sodium hydroxide acts as an antacid by neutralizing stomach acid. Due to Li's lower electropositivity than sodium's, lithium carbonate is less stable than sodium carbonate. Due to its thermal instability, lithium carbonate decomposes at lower temperatures.
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anhydrous sodium sulfate is used at the end of the procedure to dry the product. what are the intermolecular forces at play that allow the sodium sulfate to dry the product?
The intermolecular forces at play that allow the sodium sulfate to dry the product are hydrogen bonding and van der Waals forces.
When anhydrous sodium sulfate is added to a solution, it readily absorbs water molecules by forming hydrogen bonds with them. This removal of water molecules results in a reduction in the number of water molecules present in the mixture and thus, the product is dried.
Additionally, van der Waals forces also play a role in the drying process. Van der Waals forces are weak, non-covalent forces that arise due to the fluctuation of electron density in a molecule. They are responsible for the interaction between molecules, including the attraction between sodium sulfate and water molecules.
The combined effect of hydrogen bonding and van der Waals forces results in the absorption of water by the anhydrous sodium sulfate, leading to the drying of the product.
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which chemical waste situation should always be supervised or performed by an instructor? note that you still may need to alert your instructor about the described incident, even if you clean it up yourself.
It is always best practice to have a qualified instructor supervise any chemical waste situation, even if you are capable of cleaning it up yourself.
This is because the instructor will be able to ensure the safety of all individuals involved and ensure that the waste is disposed of properly.
Additionally, you should always alert the instructor about any described incident, even if you are able to clean it up yourself, as this will ensure that appropriate action is taken.
When disposing of chemical waste, it is important to ensure that the waste is disposed of according to local regulations. Depending on the type of waste, there may be specific requirements for how to dispose of it safely and legally. Additionally, it is important to ensure that all containers used for storing or transporting the chemical waste are labeled properly and securely closed.
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is neutra
- On the basis of Rutherford's
model of an atom, which sub-
atomic particle is present in the
nucleus of an atom?
why is it important that k is more concentrated inside the cell and na and ca2 are more concentrated outside the cell?
It is important that K is more concentrated inside the cell and Na and Ca2 are more concentrated outside the cell because it helps to maintain the cell's resting membrane potential.
This is important in order for the cell to function properly. The resting membrane potential is maintained by the presence of ion channels in the cell membrane that allow ions to flow in and out of the cell. The concentration gradient of K, Na, and Ca2 creates a potential difference across the cell membrane, which serves as the basis of the cell's ability to generate and transmit electrical signals.
This helps the cell to communicate with other cells, which is important for normal cellular functions.
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what volume of air contains 11.9 gg of oxygen gas at 273 kk and 1.00 atmatm ? express your answer using two significant figures.
16 ml of oxygen contains 11.9 gg of oxygen gas at 273 K and 1.00 atm.
Perfect Gas Law. PV = nRT. The number of moles of a gas times a constant (R) times the temperature of the gas equals the pressure of the gas times its volume. Because it links the amount of a gas (in terms of moles) to its pressure, volume, and temperature, the ideal gas law is the last and most useful expression of the gas laws.
Using the ideal gas equation i.e
PV = nRT
where P = pressure = 1.00 atm
V = volume of gas = unknown
n = moles of gas = Given mass / molar mass
= 11.9 / 16 = 0.74 moles
R = universal gas constant =0.0821 J mol-1 K-1
T = temperature of gas = 273 K
Using the above equation we have
1 x V = 0.73 x 0.0821 x 273
volume of gas = 16.34 ml
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a molecule is group of answer choices less stable than its constituent atoms separated. a combination of two or more atoms. electrically charged. none of these a carrier of one or more extra neutrons.
A molecule is a combination of two or more atoms.
A molecule is the smallest unit into which a pure substance may be divided while still retaining its composition and chemical properties, and it is made up of two or more atoms. Substances retain their chemical and physical properties even after being subdivided into smaller and smaller pieces, all the way down to the level of individual molecules. When a substance is broken down even more, the resulting fragments have different chemical properties and, in most cases, a different chemical composition. After this point, the chemical links between the atoms in the molecule are broken.
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if an individual performed 5,000 foot pounds of work in 1 minute, how many kilojoules of work were accomplished?
If an individual performed 5,000 foot-pounds of work in 1 minute, the amount of work accomplished would be 6.78 kilojoules (kJ).
This can be calculated by dividing the foot-pounds by 737.56, which is the number of foot-pounds in 1 kilojoule.
When it comes to calculating the amount of work done, it is important to use the equation W = Fd, which stands for work equals force multiplied by distance.
This equation can be used to calculate the amount of work done, and then the amount of energy transferred, when a force is applied over a certain distance. In the case of the individual performing 5,000 foot-pounds of work in one minute, the amount of work done can be calculated by multiplying 5,000 foot-pounds by the number of feet in one minute, which is 60. This will give a result of 300,000 foot-pounds of work done in one minute. To convert this to kilojoules (kJ), the result is then divided by 737.56, which is the number of foot-pounds in one kilojoule. This will give the result of 6.78 kilojoules (kJ) of work done in one minute.
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based on vsepr theory, what is the approximate cˆnˆh bond angle in glycine? explain.
In glycine, the approximate CˆNˆH bond angle is 109.5 degrees. This is so because it is an amino acid made up of two hydrogen atoms on either side of a core carbon atom, a nitrogen atom, and a sulphur atom.
The carbon and nitrogen atoms form a linear geometry in accordance with VSEPR theory, and the two hydrogen atoms at either end of the line form two angles. Since the nitrogen and carbon atoms are in the same group, they repel one another equally, resulting in a 109.5 degree bond angle. Since it is smaller than the angle of a conventional tetrahedron, which would be 109.5 degrees, this angle is referred to as a "bent" angle.
As a result of the attraction between the two electronegative atoms, the CˆNˆH bond angle in glycine is a little shorter than the typical tetrahedral angle.
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Give one property of sodium chloride that is not a property of sodium or chloride
Answer:
Explanation:
Sodium:
A soft, silver-white, metallic element that oxidizes rapidly in moist air, occurring in nature only in the combined state, and used in the synthesis of sodium peroxide, sodium cyanide, and tetraethyllead: a necessary element in the body for maintenance of normal fluid balance and other physiological functions. Symbol: Na; atomic weight: 9898; atomic number: 11; specific gravity: 0.97 at 20°C.
Chloride:
A salt of hydrochloric acid consisting of two elements, one of which is chlorine, as sodium chloride, NaCl
Sodium chloride:
Salt, a crystalline compound, sodium chloride, NaCl, occurring as a mineral, a constituent of seawater, etc., and used for seasoning food, as a preservative, etc.
Now we must discuss the differences.
The sodium ion and chlorine anion combine to generate sodium chloride, an ionic molecule. The chlorine atom obtains an electron to form the chlorine ion, while the sodium ion is created from the sodium metal by removing one valence electron from its outermost electronic state.
The compounds that are created by a cation and an anion and have an ionic connection between the two ions are referred to as ionic compounds. The definition of an ionic bond is a bond created by an electron transfer between two atoms.
The characteristics of the individual atoms or the ions are different from those of the ionic complex. The chlorine atom is a yellow-green gas that corrodes the metal and is dangerous, whereas the sodium atom is a silvery white that aggressively burns in the air and becomes explosive when it comes into touch with water. The ionic compound sodium chloride has a white crystalline form and is frequently used as table salt in daily life for ingestion and other activities.
Properties:
Sodium chloride
Ionic compoundTable salt and is consumedBoiling point is 1465 degree CelsiusMelting point is high 800.7 degree CelsiusSodium
Metal elementExplosive when reacted with waterSoft and harmfulBoiling point is 882.940 degree CelsiusMelting point is 97.794 degree CelsiusChloride:
Non-metalSoluble in waterPoisonousBoiling point is -34.04 degree Celsius.Melting point is -101.5 degree CelsiusThis is how the sodium chloride varies from sodium and chlorine atoms in terms of properties.
Note: As sodium is a very soft metal, it is maintained and stored in mineral oil to stop it from interacting with the air and water. Metal sodium should be treated cautiously while being used.
- Eddie
A solution of potassium hydroxide
(KOH) was titrated against a solution
of hydrochloric acid. It took 35 cm³
of the hydrochloric acid to
completely neutralise 50 cm³ of
potassium hydroxide. Work out the
concentration of the potassium
hydroxide solution in mol/dm³ if the
concentration of the acid was 2
mol/dm³. Round your answer to 1
d.p.
Answer:
first you'd need to write the balanced symbol equation of the reaction between KOH and HCL which would be:
KOH+HCL-> KCL+H20
you know that 35cm^3 of 2 mol/dm^3 HCL has been used, and you need to work out the moles of the HCL from this info using the equation:
concentration(mol/dm^3 )=moles(mol)/volume(dm^3)
rearranging the equation to make moles the subject, you'd get: moles=concentration x volume
plugging in the info, you'd get moles of HCL= 35/1000 dm^3 x 2 moldm^3= 0.07 mol
because there's a 1:1 ratio of HCL:KOH, the moles of KOH would also equal 0.07 mol
now using the con equation, you'd get the concentration of KOH= 0.07mol/(50/1000) dm^3= 1.4 moldm^3
Explanation:
hope this helps and sorry if any of my calculations are wrong! you may want to double check all the calculations.
Sodium chloride is a soluble salt that can be made by mixing sodium hydroxide
with which acid? Give the name, not the formula.
By neutralizing hydrochloric acid with sodium hydroxide, sodium chloride (NaCl) is produced.
What acid reacts with sodium hydroxide and sodium chloride?The remaining acid and alkali molecules combine to create a new chemical, which also contains water. We call this a salt.An acid and an alkali combine to make a salt in chemistry. However, in common usage, the term solely applies to sodium chloride, sometimes known as table salt.Sodium hydroxide neutralizes hydrochloric acid, resulting in the formation of sodium chloride (NaCl).When the water evaporates, only the salt is left.As was previously explained, heartburn develops when stomach acid reflux denatures the tissue (protein) lining the oesophagus.Antacids are medications that treat heartburn by neutralizing stomach acid and relieving oesophagitis.MgOH2, an alkali magnesium hydroxide, is a typical component of antacids.To Learn more About hydrochloric acid Refer To:
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why is chlorine +5? It's not a balanced equation if it is 5 because the sum of the whole thing equals +4 when isn't the whole point to make it b balanced to 0
Answer:
Explanation:
KClO₃ ⇒ KCl+ O₂
Oxidation state for each oxygen in O₃ = -2. There are 3 oxygens so the total is -6 (3 x -2 = -6) .
Oxidation state for K = +1.
Solve the oxidation state for chlorine. Treat chlorine as an unknown and solve for its oxidation state using the two known oxidation values for K and O.
+1 - 6 + chlorine = 0
-5 + chlorine = 0
+5 - 5 + chlorine = 0 + 5
chlorine = +5
twenty different amino acids are found in the proteins of cells. what distinguishes these molecules
Amino acids differ from each other with respect to their side chains, which are referred to as R groups. The R group for each of the amino acids will differ in the structure, electrical charge, as well as polarity.
Amino acids are the compounds or the building blocks that make up peptides as well as proteins. Each amino acid is structured from an amino group and a carboxyl group bound to the tetrahedral carbon. This carbon is denoted as the α-carbon.
Proteins are the chains of the amino acids which is assemble via amide bonds called as peptide linkages. The difference in the side-chain group or the R-group is what determines the unique properties of each of the amino acid.
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A substance that conducts an electrical current when dissolved in water is called 1.a catalyst 4 metalloid 3 . a nonelectrolyte an electrolyte 10. Which are the relative ion concentrations in an acid solution? more H+ ions than OH" ions fewer H ions than OH- ions an equal number ofH t ions and OH- ions Ht ions but no OH- ions
When dissolved in a polar solvent, like water, an electrolyte is a chemical that results in an electrically conducting solution.
A chemical that separates into charged ions in water is called an electrolyte. The term "cation" refers to positively charged ions. Anions are the name for negatively charged ions. An electrolyte is a material that, when melted or dissolved in water, may conduct an electric current. Electrolytes are materials that disperse in water to create electrically conductive solutions. Electrolytes are materials that break down in water to produce ions. When dissolved in water, electrolytes can either be ionic compounds that break down into their component cations and anions or covalent compounds that chemically react with water to form ions (such as acids and bases).
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C3H8 + 5 O2 = 3 CO2 + 4 H20
1) How many moles of O2 are necessary to react completely with 12.0 moles of C3H8
2) How many moles of H2O will be formed from 13.5 moles of O2
3) If 1.35 moles of CO2 are produced, how many moles of H2O are produced
1. In the balanced equation, 1 mole of C3H8 reacts with 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O. Therefore, if we have 12.0 moles of C3H8, we need 5*12.0 = 60.0 moles of O2 to react completely.
2. In the balanced equation, 1 mole of C3H8 reacts with 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O. Therefore, if we have 13.5 moles of O2, we would produce 4*13.5 = 54.0 moles of H2O
3. In the balanced equation, 1 mole of C3H8 reacts with 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O. If we know that we have 1.35 moles of CO2, we can use this relationship to find the amount of H2O produced. Since the ratio of CO2 to H2O is 3:4, for every 3 moles of CO2 produced, we would produce 4 moles of H2O. Therefore, if 1.35 moles of CO2 are produced, we can divide 1.35 by 3 to find the number of moles of H2O produced, which is 1.35/3 = 0.45 moles of H2O.
why are water's chemical and physical properties so unique?
The specific heat, thermal conductivity, surface tension, dipole moment, and other properties of water are higher than those of other liquids. These makes the physical properties so unique
Water molecules have a bent overall structure, partial positive charges on the hydrogens, partial negative charges on the oxygen, and are polar. This is due to the fact that oxygen is more electronegative than hydrogen, making it more effective in drawing electrons. Excellent solvents include water. An oxygen (O) atom and two hydrogen (H) atoms make up water. Because it is bipolar, with a little positive charge on one side (where the hydrogen atoms are connected) and a slightly negative charge on the other, it is special (just oxygen). The distinctive physical characteristics of water, such as its high heat of vaporization, high specific heat, and almost universal solvent qualities, are also a result of hydrogen bonding.
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Please help me with this Chemistry homework! i will give 15 points :D
Answer:
1. one particle
2. to represent different states of matter and/or different particles or elements
3. multiple particles or an element with multiple particles
4. the grey bricks would connect to the black one in a triangle shaped way
5. the white bricks would connect with the grey one in the middle with the white ones on both sides of it
extension
1. when you freeze water it becomes ice and vice versa- when you melt it it becomes water
2. it is the same identity either way- ice is only frozen water and when you melt it it will become that once again
I really hope this helps because this was really confusing!
A student plotted the movement of an object over time.
Which line segment indicates that the object is slowing down?
An object is travelling at a constant speed if the line is horizontal.Slowing down is shown by a downward-sloping line.
On a speed-time graph, how can you determine if an object is moving quickly or slowly? An object is travelling at a constant speed if the line is horizontal.Slowing down is shown by a downward-sloping line.A speed that is constant is shown as a horizontal line on a speed-time graph.On a speed-time graph, an acceleration is shown as a sloping line.A changing object's speed is shown by the sloping line.In either case, the item is changing its speed.Any curve on a position graph indicates that the velocity is changing, as well as the slope.Acceleration is implied by changing velocity.Thus, if an item is speeding and changing velocity or slope on a graph, it is curving.On the V-T graph, constant velocity is represented by a horizontal line.
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According to law of conservation of mass, during a chemical reaction:
A
that matter can be created but not destroyed in a chemical reaction.
B
that matter can neither be created nor be destroyed in a chemical reaction.
C
that matter cannot be created but destroyed in a chemical reaction.
D
that matter can be created as well as destroyed in a chemical reaction.
B. that matter can neither be created nor destroyed in a chemical reaction. According to the law of conservation of mass, during a chemical reaction matter can neither be created nor destroyed.
What is the chemical reaction's law of mass conservation?Antoine Lavoisier discovered in 1789 that mass is neither created nor destroyed in chemical reactions, which led to the formulation of the Law of Conservation of Mass. That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass after the conclusion of the reaction.
What is the first principle of mass conservation?According to the rule of conservation of mass, mass is neither generated nor destroyed during a chemical process. For instance, when coal is burned, the carbon atom in it transforms into carbon dioxide. The carbon atom transforms from a solid to a gas, yet its mass remains constant.
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Which set of approximate bond angles at C1, C2, and C3 of the following molecule indicates the correct shape? C3 C2 C1 NFC-CH=CH2 Select one: a. C1 180, C2 120, C3 109.5 b. C1 180, C2 120, C3 120 c. C1 120, C2 120, C3 120 d. C1 120, C2 120, C3 180
The correct set of approximate bond angles at C1, C2, and C3 of the molecule "NFC-CH=CH2" is: a. C1 180, C2 120, C3 109.5.
This molecule is a linear alkene, where the double bond (C=C) is located between C2 and C3. The bond angles reflect the shape of the molecule, which is linear. The C1 atom is bonded to two other carbons and forms a 180-degree bond angle with them, indicating a straight line. The C2 and C3 atoms, which are bonded to a carbon and a double bond, form 120-degree bond angles with each other and the neighboring carbons, again indicating a straight line. The bond angle between the two double bonded carbons (C2-C3) is slightly less than the ideal value of 120 degrees due to the pi bond between them, which pushes the atoms slightly apart. The correct set of approximate bond angles at C1, C2, and C3 of the molecule "NFC-CH=CH2" is: a. C1 180, C2 120, C3 109.5.
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How would the temperature of a gas change when its volume is decreasing at a constant pressure?
Answer: See Explanation
Explanation:
When the volume of a gas is decreasing at a constant pressure, the temperature of the gas will increase. This is because of the relationship between the pressure, volume, and temperature of a gas, which is described by the Ideal Gas Law (PV = nRT), where P is pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.
In this scenario, the pressure is constant, and the volume is decreasing, so the product PV must remain constant in order to maintain the balance of the equation. Therefore, the only way to balance this equation is to increase the temperature T, in order to make the product PV remains constant.
This relationship is also described by Gay-Lussac's Law, which states that the pressure of a fixed mass of a gas is directly proportional to its absolute temperature at a constant volume. This means that if the volume of the gas is decreasing, the pressure will remain constant, the only way to balance the equation is to increase the temperature.
So in conclusion, as the volume of a gas decreases at constant pressure, the temperature of the gas will increase.
