Gram staining property of a bacterium is dependent on the structure of its cell wall, which either retains or loses the crystal violet dye during the staining process.
Gram staining is a laboratory technique used to differentiate bacterial species into two groups based on the structure of their cell walls: Gram-positive and Gram-negative. During the staining process, the bacterial cells are initially stained with crystal violet, then treated with iodine, and washed with alcohol. Gram-positive bacteria have a thick layer of peptidoglycan in their cell walls, which allows them to retain the crystal violet stain and appear purple under a microscope. In contrast, Gram-negative bacteria have a thin layer of peptidoglycan and an outer membrane that contains lipopolysaccharides, which causes them to lose the crystal violet stain and appear red or pink under a microscope. The Gram staining property of a bacterium is important for identifying and classifying bacterial species, as well as for selecting appropriate antibiotic treatments.
Peptidoglycan is a polymer consisting of sugars and amino acids that forms a mesh-like structure in the cell wall of bacteria, providing rigidity and protection against osmotic pressure. Lipopolysaccharides are complex molecules that are part of the outer membrane of Gram-negative bacteria, contributing to their structural integrity and resistance to antibiotics.
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If a student begins with 90.6 grams of Mg what would the theoretical yield of MgO in grams would be possible for the student to obtain?
2Mg +02->2MgO
The theoretical yield of MgO in grams would be 90.6 grams.
What do you mean by theoretical yield?
The theoretical yield is basically the amount of product that is expected to be produced from a given reaction, taking into account the limiting reactant, according to the stoichiometry of the reaction. It is calculated using the balanced equation for the reaction.
This is because the equation given is a 1:1 ratio, meaning that for every 1 mole of Mg, 1 mole of MgO would be produced. Since we know that the given amount of Mg is 90.6 grams, the theoretical yield of MgO would be the same: 90.6 grams.
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a sample of oxygen gas occupies a volume of.200 l at 60.0 and 500 mmhg of pressure what will what will its volume be in l at stp
The volume of sample at STP is 116.3L when a sample of oxygen gas occupies a volume of.200 l at 60.0 and 500 mmHg of pressure.
Given the initial volume of oxygen sample (V1) = 200L
The initial temperature (T1) = 60° = 60 + 273 = 333K
The initial pressure of sample (P1) = 500mmHg = 0.657895atm
The pressure at STP (P2) = 1 atm
The temperature at STP (T2) = 25 + 273= 298K
The volume at STP = V2
We know that from ideal gas law equation: PV = nRT such that at n is constant: P1V1/T1 = P2V2/T2. Then,
0.65 x 200/333 = 1 x V2/298
V2 = 116.3L
Hence the volume of sample at STP is = 116.3L
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ill in the missing information: symbol atom or ion? check all that apply number of protons number of electrons neutral atom cation anion neutral atom cation anion neutral atom cation anion
Number of protons number of electrons neutral atom cation anion neutral atom cation anion neutral atom cation anion number of proton is 7 So, atomic number is 7 atomic number is 7 for N charge.
Number of proton is 7 So, atomic number is 7 atomic number is 7 for N charge = number of proton - number of electron = 7 - 10 = -3 So, this is anion A .
Protons are the positively charged particles that are inside the nucleus of an atom. The protons are pushed apart by the electromagnetic force but pulled together by the strong force, which is stronger over short distances .
Cations are positively-charged ions (atoms or groups of atoms that have more protons than electrons due to having lost one or more electrons). Anions are negatively-charged ions (meaning they have more electrons than protons due to having gained one or more electrons).
The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
Electron, proton, neutron are subatomic particles which build the atom. The atom consists of a central nucleus containing neutron and proton. Electrons revolve around the nucleus. Electrons are negatively charged, proton is positively charged and neutron is neutral.
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why is there no change in volume when pressure is applied to liquids and solids?
Liquids and solids have fixed volumes because their particles are packed tightly and have little free space to move around.
When pressure is applied, the particles in these materials are forced closer together, but because of their fixed positions, they cannot move closer to each other. The result is that the volume remains constant.
The behavior of liquids and solids is different from gases, which are compressible and have variable volumes that can change when pressure is applied. This is because the particles in a gas have much more free space to move around and can be easily compressed or expanded by pressure.
It is important to note that while the volume of a liquid or solid may not change when pressure is applied, the density of the material can change. Increasing pressure can cause the particles to become more closely packed, increasing the material's density.
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if the calcium concentration inside a cell is 0.3% and the concentration in the surrounding fluid is 0.8%, through what process would the cell increase the amount of calcium inside the cell?
the cell can increase the amount of calcium ions inside the cell by active transport, facilitated diffusion, and endocytosis.
The movement of calcium ions across the cell membrane is crucial for several physiological processes, including muscle contraction, neurotransmitter release, and gene expression. When the concentration of calcium ions is low inside the cell compared to the surrounding fluid, the cell can increase the amount of calcium ions inside by several processes. One of the ways the cell can increase the amount of calcium inside cell is by active transport. Active transport involves the use of energy in the form of ATP to move ions against their concentration gradient. In this case, the cell would use ATP to move calcium ions from the area of lower concentration inside the cell to the area of higher concentration in the surrounding fluid. This process is carried out by membrane-bound protein pumps, such as the calcium ATPase and the sodium-calcium exchanger. Another way for the cell to increase the amount of calcium ions inside the cell is by facilitated diffusion. Facilitated diffusion is the process by which ions or molecules move across a membrane through a protein channel. Calcium ions can move inside the cell through specific protein channels such as voltage-gated calcium channels and ligand-gated calcium channels. These channels allow calcium ions to move down their concentration gradient, from an area of higher concentration in the surrounding fluid to an area of lower concentration inside the cell. Moreover, the cell can increase the amount of calcium inside the cell by endocytosis. In this process, the cell engulfs extracellular fluid containing calcium ions by forming a vesicle around it, which is then transported into the cytoplasm. Endocytosis can occur through various mechanisms, such as phagocytosis and pinocytosis, depending on the size and nature of the substance being engulfed. In conclusion, the cell can increase the amount of calcium ions inside the cell by active transport, facilitated diffusion, and endocytosis. Each process is important in maintaining the proper concentration of calcium ions within the cell and is regulated by various cellular mechanisms.
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Please help now ASAP pleaseeee
Answer:
166.1
Explanation:
297.6+45.0=342.6
342.6-176.5=166.1
A 25.0 g sample of metal at
16.0 °C is warmed to 22 1 °C
by 259 J of energy.
What is the change in temperature
for the metal?
The temperature change is 6.1 °C .
What is temperature change?Temperature change refers to a change in the degree of hotness or coldness of an object or system. It is a measure of the amount of heat added or removed from an object or system and is expressed in units of temperature.
Temperature change occurs when heat is transferred from one object to another or when heat is added to or removed from a system. This transfer of heat can be due to a variety of factors, including conduction, convection, radiation, and phase changes.
The temperature change is;
22.1°C - 16.0 °C
= 6.1 °C
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Lit + e- Li
In a lithium ion battery, the following reaction occurs. When the device is charging (adding e-) which direction does the reversible reaction occur?
A.Forward to make more products
B.Reverse to make more reactants
C.No change will occur in the system
D. The battery explodes
In a lithium ion battery, redox reaction occurs and hence no change will occur in the system when the device is charging.
What are redox reactions?Redox reactions comprise of two parts a reduced part and an oxidized part, which occur simultaneously . The part which is reduced gain electrons and hence there is a increase in oxidation state of the species.
While, the part which is oxidized looses electrons and hence there is a decrease in oxidation state of the species.During redox reactions, there is no net change in the number of electrons . Electrons which are given off in oxidation are used up in reduction.
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1. For a more difficult training session, the mass to be pushed is increased to 300 kg. If the players still produce a net force of 150 N, what is the acceleration of the 300 kg mass?
2. Did the acceleration go up or down with the increased mass to be pushed? Why did that happen?
please help hurry!
Acceleration of the car is the force divided by its mass. The acceleration of the mass of 300 kg with a force of 150 N is 0.5 m/s².
What is acceleration ?Acceleration is a physical quantity measuring the rate of change in velocity. It is a vector quantity having both magnitude and acceleration. Acceleration has the unit of m/s².
According to Newton's second law of motion, the force acting on a body is the product of its mass and acceleration.
F = ma
Given that, mass of the object = 300 kg
force applied = 150 N
acceleration = force/mass
a = 150 N/300 kg = 0.5m/s²
Therefore, the acceleration of the mass is 0.5 m/s². As the mass increases, acceleration of an object decreases. Then, acceleration goes down by increasing the mass.
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The dotted arrow in this reaction is a placeholder. Select the arrow that best describes the relationship between the reactants and products. Identify the correct arrow descriptor.
Organic chemistry uses organolithium as a highly strong base. It produces an acid base reaction when combined with any acidic material extremely fast.
As a result of its rapidity and spontaneity, this reaction is practically irreversible.
Therefore, an irreversible arrow, in which most of the reaction is moving forward, best represents the relationship between the reactant and product ( i.e shifting towards product side)
Fluorides are often not utilised, and halide reactivity in these processes rises in the following order: Cl Br I. The second reaction's alkyl magnesium halides are known as Grignard Reagents after the French scientist Victor Grignard, who made the discovery and was awarded the Nobel Prize in 1912 for it. Similar reactions occur with the other metals indicated above, but Grignard and Alky Lithium Reagents are the most popular.
In the image below, the appropriate response is circled:
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what is the highest oxidation state for nb?
The highest oxidation state for Nb (niobium) is +5.
Oxidation is the loss of electrons in a chemical reaction. For the element niobium (Nb), the highest oxidation state is +5. This is because niobium has five valence electrons in its outermost shell, which it can lose to form a +5 oxidation state.
This is commonly seen in compounds such as Nb₂O₅ (niobium pentoxide) and NbF₅ (niobium pentafluoride). That being said, it is important to note that niobium can also form lower oxidation states, such as oxidation state +3 and +4. However, the +5 state is the highest possible for niobium.
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What do resonance structures indicate?
Resonance structures are employed when a single Lewis structure for a molecule is insufficient to completely capture the bonding that occurs between adjacent atoms in relation to empirical data on the actual bond lengths between those atoms.
A group of two or more Lewis structures known as resonance structures explain the electronic bonding of a single polyatomic species, including fractional bonds and fractional charges. Unable to be described by a single Lewis formula with an integral number of covalent bonds, delocalized electrons can be described using resonance structures.
The bonding in certain molecules or ions can occasionally defy description by a single Lewis structure, even when formal charges are taken into account. When the bonding cannot be encapsulated by a single Lewis formula, resonance is a means to describe delocalized electrons inside specific molecules or polyatomic ions. There are several contributing structures that depict a molecule or an ion with such delocalized electrons (also called resonance structures or canonical forms).
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X
Find the value of x.
30°
135°
x = [?]°
The value of x in the figure is
55 degrees What is an angle?An angle is a geometric figure formed by two rays or line segments that share a common endpoint. This common endpoint is called the vertex of the angle, and the two rays or line segments that form the angle are called its sides.
Angles are measured in degrees, and a full circle contains 360 degrees. Angles can be classified based on their measure. A right angle measures exactly 90 degrees, an acute angle measures less than 90 degrees, and an obtuse angle measures more than 90 degrees but less than 180 degrees.
The figure consist of angel which is an acute angle, an acute angle are angles less than 90 hence 55 is the possible value
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how does benedict’s solution react when a very high amount of reducing sugar is present in a sample?
Benedict solution is aqua- blue in color. But as it is heated with high amount of reducing sugar its color changes to red.
Benedict solution is a complex mixture of pentahydrate of copper sulphate, sodium citrate and sodium carbonate. Carbohydrates, reducing sugars have reducing property. So when benedict solution is heated with reducing sugar the copper(II) ions is reduced to Cu(I) ions. From copper sulphate cupric oxide is formed, which is red in color.
If traces of reducing sugar is present, the color will turn to green. For moderate amounts the color will be yellow to orange. When high amount of reducing sugar is present more cupric oxide is formed and solution become red in color.
So in presence of high amount of reducing sugar, benedicts solution makes brick red precipitate.
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What is the molar mass of CoCl2•6H20?
Answer:
the molar mass of CoCl2•6H2O is 238.05 g/mol.
Explanation:
The molar mass of CoCl2•6H2O can be calculated by adding the atomic masses of each element in the compound.
Here's the calculation:
Cobalt (Co): 58.93 g/mol
Chlorine (Cl): 35.45 g/mol (2 atoms) = 70.9 g/mol
Hydrogen (H): 1.01 g/mol (12 atoms) = 12.12 g/mol
Oxygen (O): 16.00 g/mol (6 atoms) = 96.00 g/mol
Therefore, the molar mass of CoCl2•6H2O is:
58.93 + 70.9 + 12.12 + 96.00 = 238.05 g/mol
So, the molar mass of CoCl2•6H2O is 238.05 g/mol.
Carbon tetrachloride is a solvent which is used as a refrigerant and also as a cleaning agent. Today, methane and chlorine are mainly used to produce carbon tetrachloride:
CH4+4012-> CC14+4H1
How many grams of carbon tetrachloride can be produced from reacting 190.1 grams of chlorine with excess methane?
The amount of carbon tetrachloride that can be produced from reacting 190.1 grams of chlorine with excess methane is 159.8 grams.
What do you mean by chlorine?
Chlorine is basically a chemical element with symbol Cl and atomic number 17. It is a halogen, which means it is a highly reactive nonmetal. Chlorine is a yellow-green gas at room temperature and is highly soluble in water. It is most commonly used as a disinfectant and water purifier, but it has many other uses, including production of plastics, bleach, and synthetic fibers.
This is calculated using the equation:
mass of carbon tetrachloride = (mass of chlorine / molar mass of chlorine) x molar mass of carbon tetrachloride
= (190.1 / 70.906) x 153.82
= 159.8 grams
Hence, 159.8 grams of carbon tetrachloride can be produced from the reaction.
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explain why the can behave as it does. as long as the water is heated gently, no condensed water vapor is visible as steam exits the can.
When water is heated in a closed container, such as a can, the pressure inside the container increases as the water vaporizes into steam.
The pressure inside the can builds up until it reaches a point where it is high enough to overcome the pressure of the surrounding air, at which point the steam is able to escape through a small opening.
This can cause the steam to expand rapidly and violently, which can lead to the can exploding or bursting open. the warm, moist air from your lungs condenses into visible water vapor when it comes into contact with the colder air outside.
In contrast, if the water in the can is heated too quickly or to a very high temperature, the pressure inside the can can become so high that the steam that escapes is very hot and under high pressure. This is why it's important to be cautious when heating water in a closed container, and to avoid heating it too quickly or to too high a temperature.
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explain why a water or carbon dioxide fire extingisher might not be effective in putting out a sodium fire
Water and carbon dioxide are ineffective extinguishing agents for a sodium fire because they react with sodium to produce hydrogen gas and carbon monoxide, which can ignite and worsen the fire.
When sodium metal is exposed to air or water, it reacts vigorously and can ignite, producing a bright yellow flame. Sodium is highly reactive and has a low ignition temperature, so even a small amount of heat or moisture can cause it to ignite.
Water is not appropriate because it reacts with sodium to produce hydrogen gas, which can ignite and make the fire worse. This reaction also releases a large amount of heat, which can further fuel the fire.
Carbon dioxide can also be ineffective for extinguishing a sodium fire. While carbon dioxide does displace oxygen, it can also react with the sodium metal to produce carbon monoxide and sodium oxide. These products can also ignite and potentially increase the intensity of the fire.
Therefore, in the case of a sodium fire, specialized extinguishing agents such as dry powder, sand or graphite are recommended. These agents can help to smother the fire and prevent the sodium from coming into contact with air or moisture, which can further fuel the fire. It is important to note that sodium fires should be handled with extreme caution and should only be extinguished by trained professionals using the appropriate equipment and techniques
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magnesium and nitrogen react to form an ionic compound. predict which forms an anion, which forms a cation, and the charges of each ion. write the symbol for each ion and name them.
When magnesium and nitrogen react to form an ionic compound Magnesium (Mg) becomes a cation and Nitrogen (N) becomes a anion.
Mg2+ - magnesium cation or magnesium ion N3- - nitride anion or nitrogen ion.
Magnesium (Mg) is a metal that tends to lose two electrons when it reacts, becoming a cation with a charge of +2.
Nitrogen (N) is a non-metal that tends to gain three electrons when it reacts, becoming an anion with a charge of -3.
When magnesium and nitrogen react, the magnesium cation (Mg2+) and the nitrogen anion (N3-) combine to form the ionic compound magnesium nitride (Mg3N2).
The symbols and names for the ions are:
Mg2+ - magnesium cation or magnesium ion
N3- - nitride anion or nitrogen ion.
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name one cleaning compound you commonly used at home. Why do you use it commonly?
Answer:
Chlorine
Explanation:
Because this will remove dirt and stain and it will kill microorganisms that can cause diseases.
what do you think happens to the solubility of a gas as the temperature increases?
The solubility of a gas in a liquid generally decreases as the temperature increases. This means that as the temperature increases, the amount of gas that can dissolve in a given volume of liquid decreases.
This relationship between temperature and solubility of gases is described by Henry's Law, which states that the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid.
As the temperature increases, the pressure of the gas above the liquid increases, leading to an increase in the number of gas molecules escaping from the liquid into the gas phase. This increase in the number of gas molecules in the gas phase reduces the amount of gas that can dissolve in the liquid, thereby decreasing the solubility of the gas.
For example, when a carbonated beverage is heated, the solubility of carbon dioxide decreases, causing it to escape from the liquid and form bubbles. This is why the beverage becomes less carbonated as it is heated.
In conclusion, the solubility of a gas in a liquid generally decreases as the temperature increases due to the increase in the pressure of the gas above the liquid and the corresponding increase in the number of gas molecules escaping from the liquid.
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reggie puts a beaker of ice and water on a hot plate, and the ice slowly begins to melt as shown in diagram below. after a few minutes, only liquid water is in the beaker. eventually, the water becomes hot and boils. the liquid water changes to water vapor, which is a gas. how is the ice different from the water vapor that forms after the water begins to boil?
The ice particles have a lower average kinetic energy. Consequently, ice is distinct from the water vapour that develops as the water starts to boil.
Chemistry defines an object's kinetic energy as the amount of work it produces when in motion. Activities like walking, climbing, tossing, and dropping consume kinetic energy.
Kinetic energy is a type of energy that a moving object or particle has. When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy. A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its properties. Any combination of movements, including translation, rotation along an axis, and vibration, may be used as the kind of motion.
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what effect will increasing the volume of the system have on the mole fraction of cl2 in the equilibrium mixture?
Increasing the volume of the system will have no effect on the mole fraction of Cl2 in the equilibrium mixture.
This is because the mole fraction is the ratio of moles of a specific component to the total moles of all components in the system. Increasing the volume will not change the number of moles of any specific component in the system, hence the mole fraction of Cl2 will remain constant.
The only factor that would affect the mole fraction of Cl2 is a change in the number of moles of Cl2 or any other component in the system. This can be achieved by adding or removing a specific component or by changing the temperature or pressure of the system. However, changing the volume alone will not affect the mole fraction of Cl2 or any other component in the system.
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a 1.375 g sample of a sugar found in seaweed is burned completely in oxygen to give 1.993 g of co2 and 0.9519 g of h2o. what is the empirical formula of this sugary substance?
1.375 g sample of a sugar found in seaweed is burned completely in oxygen to give 1.993 g of co2 and 0.9519 g of h2o then the empirical formula for the sugar is C2H3O
To find the empirical formula of the sugar, we need to determine the number of moles of carbon, hydrogen, and oxygen in the sample.
First, we need to determine the number of moles of carbon in the sample. We can do this by dividing the mass of CO2 produced by the molar mass of CO2:
1.993 g CO2 / 44.01 g/mol = 0.04529 mol C
Next, we need to determine the number of moles of hydrogen in the sample. We can do this by dividing the mass of H2O produced by the molar mass of H2O:
0.9519 g H2O / 18.015 g/mol = 0.05278 mol H
Finally, we can calculate the number of moles of oxygen by subtracting the moles of carbon and hydrogen from the total number of moles in the sample:
0.135 g / (12.011 g/mol *0.04529mol) = 2.365 ≈ 2
0.135 g / (1.008 g/mol *0.05278mol) = 2.525 ≈ 3
0.135 g / (15.999 g/mol *2mol) = 0.00422 ≈ 0
Therefore, the empirical formula for the sugar is C2H3O.
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due to the conjugation between the alkene and the carbonyl group in the product, the two alkene hydrogen atoms will show up at very different chemical shift from each other. when drawing a reasonable resonance structure of the product that shows a charge on one of the two alkene carbons, will this resonance structure cause extra shielding or extra deshielding? why?
The resonance structure with a positive charge on one of the alkene carbons will cause extra deshielding, as the positive charge withdraws electron density from the alkene.
reducing its electron density and resulting in a downfield shift. A resonance structure is a theoretical construct in chemistry that describes a molecule or ion with delocalized electrons. It is represented by drawing alternative Lewis structures with the same arrangements of atoms but different locations of electrons. The resulting resonance hybrid is intermediate between these structures and has greater stability than any individual resonance structure due to the delocalization of electrons. Resonance structures are particularly useful for explaining the chemical properties and reactivity of certain molecules, especially those with conjugated pi systems. They are also used to explain phenomena such as acid-base behavior, reaction mechanisms, and molecular orbital theory. Overall, the concept of resonance is an important tool for understanding the electronic structure and properties of many different types of molecules.
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is stokes' law valid for droplets of oil falling in water? for air bubbles rising in benzene? for tiny particles falling in air, if the particle diameters are of the order of the mean free path of the molecules in the air?
Stakes' law is valid for any object falling into water or any other liquid. Yes, you can use Stokes' law if liquid oil is falling into water.
Stake's Law:
In 1851, George Gabriel Stokes derived Stokes' law (also called drag) for the frictional force acting on a spherical body with a very low Reynolds number in a viscous fluid. Stokes' law is derived by solving the Stokes flow limit for small Reynolds numbers in the Navier-Stokes equation.
Gambling's law is a mathematical equation that describes the rate of sedimentation of small spherical particles in a liquid medium. This law is derived by considering the force acting on a particular particle as it sinks in the thickness of a liquid under the influence of gravity. In a viscous fluid, the force slowing the sphere's motion is directly proportional to the velocity and radius of the sphere as well as the viscosity of the fluid.
From the viscosity equation according to Stake's law, we know that the viscous force acting on a sphere is directly proportional to the following parameters:
the radius of the sphere (r)coefficient of viscosity (η)the velocity of the object (v)The force of viscosity on a small sphere moving through a viscous fluid is given by:
[tex]F_{d}[/tex] = 6πμRv
Where,
[tex]F_{d}[/tex] is the frictional force known as Stokes drag, acting at the interface between the fluid and the particle
μ is the dynamic viscosity (some authors use the symbol η)
R is the radius of the spherical object
v is the velocity relative to the flowing object
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What is the empirical formula of with 4 significant digits Carbon:80.19 Hydrogen:9.62 Oxygen:10.19 keeping 4 significant digits
place the following in order of least to greatest mass : atom, gram, molecule, mole
The order for mass is atom, molecule, mole, gram. In current physics, mass has several meanings that are theoretically distinct but physically equal.
What is mass?A body's mass is an inherent attribute. Till the discovery of the atom as well as particle physics, it was thought to be tied to the amount of matter inside a physical body.
It was discovered that although having the same quantity of stuff, various atoms and fundamental particles had varying masses. In current physics, mass has several meanings that are theoretically distinct but physically equal. The order for mass is atom, molecule, mole, gram.
Therefore, the order for mass is atom, molecule, mole, gram.
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lysine is an essential amino acid. one experiment showed that each molecule of lysine contains two nitrogen atoms. another experiment showed that lysine contains 19.2% n, 9.64% h, 49.3% c, and 21.9% o by mass. what is the molecular formula for lysine?
The molecular formula of a substance can be determined from its elemental composition. In this case, we know that lysine contains two nitrogen atoms, 19.2% nitrogen, 9.64% hydrogen, 49.3% carbon, and 21.9% oxygen by mass.
For nitrogen, the atomic weight is 14.01 g/mol, so the number of nitrogen atoms in the molecule can be calculated as follows:
mass of nitrogen = 19.2 g N / 100 g lysine = 0.192 g N
number of nitrogen atoms = 0.192 g N / 14.01 g/mol = 0.0137 mol Nnumber of nitrogen atoms = 0.0137 mol N * Avogadro's number = 8 nitrogen atoms
mass of hydrogen = 9.64 g H / 100 g lysine = 0.0964 g H
number of hydrogen atoms = 0.0964 g H / 1.01 g/mol = 0.0953 mol H
number of hydrogen atoms = 0.0953 mol H * Avogadro's number = 17 hydrogen atoms
mass of carbon = 49.3 g C / 100 g lysine = 0.493 g Cnumber of carbon atoms = 0.493 g C / 12.01 g/mol = 0.0409 mol C
number of carbon atoms = 0.0409 mol C * Avogadro's number = 7 carbon atoms
mass of oxygen = 21.9 g O / 100 g lysine = 0.219 g O
number of oxygen atoms = 0.219 g O / 16.00 g/mol = 0.0137 mol O
number of oxygen atoms = 0.0137 mol O * Avogadro's number = 9 oxygen atoms
Since each molecule of lysine contains two nitrogen atoms, the formula for lysine must be C7H17N2O3.
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The smallest part of an element that retains the chemical properties of the element. A electron B molecule C atom D proton
The smallest part of an element that retains the chemical properties of the element is the atom.
An atom is the basic unit of matter, composed of protons, neutrons, and electrons. Each atom has a specific number of protons, which determines the element it represents. Atoms are incredibly small, with a diameter of about 10^-10 meters. However, they are crucial to understanding the behavior of matter.
The properties of atoms determine the physical and chemical properties of the materials they compose. For example, carbon atoms are a fundamental building block of organic molecules, which are essential to life. Oxygen atoms are necessary for respiration and the combustion of fuels. Understanding the structure of atoms and their interactions is essential to fields like chemistry, physics, and materials science.
Scientists have developed models to represent the behavior of atoms, such as the Bohr model and the quantum mechanical model. These models help us understand how atoms bond and react with each other, which is vital for developing new materials, drugs, and technologies. Overall, atoms are the building blocks of matter and play a critical role in shaping the world around us.
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