There are three structures possible-
Pentan-1-olPentan-2-olPentan-3-olStructures of Isomeric Alcohols
Here are the structures of the isomeric alcohols (C5H12O) that can be prepared by reduction of a ketone using sodium borohydride:
Pentan-1-ol:
H3C-CH2-CH2-CH2-CH2-OH
Pentan-2-ol:
H3C-CH(OH)-CH2-CH2-CH3
Pentan-3-ol:
H3C-CH2-CH(OH)-CH2-CH3
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be sure to answer all parts. what is the ph of 0.00026 m csoh? is the solution neutral, acidic, or basic? the ph is:
The pH of 0.00026 M H2CO3 is 4.58 and the solution is acidic.the concentration of hydrogen ions in the solution.
The pH of a solution can be calculated from the concentration of hydrogen ions in the solution.
In this case, the concentration of hydrogen ions can be calculated from the concentration of H2CO3 (carbonic acid) using the equation:
H2CO3 ⇌ H+ + HCO3-
The concentration of hydrogen ions is equal to the concentration of H2CO3 at equilibrium, which can be calculated using the equilibrium constant (Kb) for the reaction.
Kb = Kw / Ka
where Kw is the ion product constant for water and Ka is the acid dissociation constant for H2CO3.
Using the calculated concentration of hydrogen ions, the pH of the solution can be calculated using the formula:
pH = -log[H+]
where [H+] is the concentration of hydrogen ions in moles per liter.
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acetylene is a fuel used in welding torches. calculate the heat released in the reaction for the combustion of acetylene
Acetylene and oxygen are converted throughout the process into carbon dioxide and water vapour, producing 566 kJ of heat for each mole of acetylene burned.
The heat released throughout the process may be calculated using the change in enthalpy, often known as the heat of reaction or the enthalpy of reaction. Using the enthalpy values of the products and reactants, one can determine the change in enthalpy, which is determined by the difference between the enthalpies of the products and the reactants. The balanced chemical equation for the burning of acetylene is 2 C2H2 + 5O2 4 CO2 + 2 H2O, and the change in enthalpy, or heat released, is -566 kJ/mol. This indicates that the process transforms acetylene and oxygen into carbon dioxide and water vapour, releasing 566 kJ of heat for every mole of acetylene burnt.
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You are carrying a load of hazardous class. What should be included in the shipping papers ?
Prepare a shipping paper with a description of the hazardous, the UN identification number, the correct shipping name, the hazard class, the packing group, the quantity, and the number and type of parcels.
When transporting a shipment of danger class 8, what should be included with the shipping papers?A hazardous material's identification number, proper shipping name, hazardous class, and packing group are all part of its basic description (when applicable). These details must be written on the shipping paper in the precise order specified in HMR Part 172, Subpart C.
What exactly are hazardous shipping materials?Compressed gases, infectious agents, radioactive substances, hazardous chemicals, lithium batteries, dry ice, liquid nitrogen, and more are examples of hazardous materials.
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Which of the following are true about balanced chemical reactions? (Select all that apply)
a.
Atoms of each element are equal on both sides.
b.
All chemical formulas have a coefficient greater than one.
c.
It is better to change subscripts to balance equations.
d.
Coefficients are added to balance the equation.
e.
Chemical equations must be balanced to satisfy the Law of Conservation of Mass.
f.
Balanced chemical equations help to determine the number of moles needed in the reaction.
Balanced chemical equations help to determine the number of moles needed in the reaction. Therefore, the correct options are option A, D, E, F.
What is balanced equation?An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction. In other words, opposite components of the reaction have an equal balance of mass and charge.
Atoms of each element are equal on both sides. Coefficients are added to balance the equation. Chemical equations must be balanced to satisfy the Law of Conservation of Mass. Balanced chemical equations help to determine the number of moles needed in the reaction.
Therefore, the correct options are option A, D, E, F.
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how many electrons can vanadium lend or borrow
According to the electronic configuration, vanadium can lend three electrons.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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a piece of metal with mass of 3.4 is heated to 344.67 k. the metal is placed in a water bath of mass 54.2 at an initial temperature of 292.37 k. the final temperature of the water is measured to be 295.53 k. the metal is at equilibrium with the water and thus has the same temperature. calculate the specific heat of the metal given the specific heat of water is 4.184 j g-1 k-1. report your answer to two decimal places. note: this example is based on a small range of actual data. your experimental numbers may or may not fall within this range. the purpose of this question is to be an example and to give you practice in performing the calculation.
The heat transfer from the metal to the water is equal to the heat absorbed by the metal. Therefore, the specific heat of the metal is 386.34 J/g°C, rounded to two decimal places.
Determining the Specific Heat of a Metal using Heat TransferIn this experiment, the specific heat of a metal with a mass of 3.4 g is determined by calculating the heat transfer between the metal and a water bath with a mass of 54.2 g. The metal is heated to a temperature of 344.67 K and placed in a water bath at an initial temperature of 292.37 K. The final temperature of the water is measured to be 295.53 K, and since the metal and water are in thermal equilibrium, the metal also has the same final temperature. Using the equation Q = mcΔT, where Q is the heat transfer, m is the mass, c is the specific heat, and ΔT is the change in temperature, the heat transfer from the metal to the water can be calculated. Knowing that the specific heat of water is 4.184 J/g°C, the change in temperature of the water can be calculated as 3.16 K. Substituting these values into the equation, the heat transfer from the metal to the water can be determined as 706.06 J. The specific heat of the metal can then be calculated using the equation c = Q / (m * ΔT) as 386.34 J/g°C, rounded to two decimal places.
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Water consists of one oxygen atom joined to two hydrogen atoms by what type of bonds?
Answer:
covalent
Explanation:
as opposed to ionic bonds
the science of carbon-containing molecules is known as
we have an aqueous solution that contains 29% (by mass) of a hypothetical solute z. the formula weight of the solute z is 164 g/mol. the density of the solution is observed to be 1.2 g/ml. what is the molarity of z in this solution? answer in units of mol/l. answer in units of mol/l.
The molarity of solute z in this solution is 2.12 mol/L.
29% (by mass) indicates that there are 29 grams of solute in 100 g of solution.
We may therefore determine our volume by using the solution density.
We know that density = mass/volume
We are given, density of solution = 1.2 g/mL and mass of solution = 100 g
So, [tex]volume=\frac{mass}{density}[/tex]
or, volume of solution = 100/1.2 = 83.33 mL
In light of the fact that we have just learned that 29 g of solute z are present in 83.33 mL, we must first determine its mass in 1 L before calculating its molarity.
We have, 1 L = 1000 mL
and 83.33 mL has 29 g of solute
So, 1000 mL solution will have = (29 × 1000)/83.33 g of solute = 348.01 g
We may determine the moles using the molar mass (formula weight).
We have, moles = mass/molar mass
molarity = 348.01/164
or, molarity = 2.12 mol/L
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Complete question:
We have an aqueous solution that contains 29% (by mass) of a hypothetical solute z. The formula weight of the solute z is 164 g/mol. The density of the solution is observed to be 1.2 g/mL. What is the molarity of z in this solution? Answer in units of mol/L.
a reactant decomposes with a half-life of 103 s when its initial concentration is 0.336 m. when the initial concentration is 0.573 m, this same reactant decomposes with the same half-life of 103 s. what is the order of the reaction? 2 1 0 what is the value and unit of the rate constant for this reaction?
The half-life of a reaction is independent of the initial concentration and remains constant for a given reaction, hence the half-life of 103s is the same for both initial concentrations.
Determining the Order and Rate Constant of a Chemical ReactionA chemical reaction's rate can be described by its order and rate constant. The order of a reaction refers to the power to which the concentration of each reactant is raised in the rate equation. For example, if a reaction is first order, the rate is proportional to the concentration of one of the reactants raised to the power of 1. On the other hand, if the reaction is in zero order, the rate is independent of the concentration of the reactants. To determine the order of a reaction, you would need to examine the effect of changing the concentration of the reactants on the rate of the reaction
The rate constant, on the other hand, is a measure of the speed of the reaction and has units of reciprocal time (e.g. per second). It is determined from the rate equation and can be used to predict the rate of the reaction under different conditions. To find the rate constant, you would need to measure the rate of the reaction at a specific temperature and concentration.
It is important to note that the half-life of a reaction is independent of the initial concentration and remains constant for a given reaction. The half-life of a reaction is defined as the time taken for the concentration of a reactant to decrease to half its initial value.
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What question did Mendeleev use to guide his science inquiry
Mendeleev used the question "What is the underlying pattern that governs the properties and relationships of elements?" to guide his scientific inquiry and eventually lead to the creation of the periodic table of elements.
What is a periodic table?According to their atomic number, electron configurations, and chemical properties, elements are arranged in the periodic table. To display the recurring patterns of an element's chemical and physical properties, it is arranged in rows and columns. Each element has a distinctive symbol that denotes its atomic number, and the elements are listed in ascending order of atomic number. A crucial tool for chemists, the periodic table is used to forecast the properties of new elements as well as the chemical behavior of existing elements. A periodic table is a crucial tool for scientists working in the fields of chemistry, physics, and other sciences.
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how many formula units make up 31.4 g of magnesium chloride ( mgcl2 )? express the number of formula units numerically.
The number of formula units in the given amount of magnesium chloride is 1.93*10^23
To calculate the number of moles, we use the equation:
Given mass of magnesium chloride = 31.4 g
Molar mass of magnesium chloride = 95.2 g/mol
Putting values in above equation, we get:
Moles of Magnesium chloride=31.4/95.2=0.32mol
Formula units is defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is 6.022*10^23
We are given:
Number of moles of magnesium chloride = 0.32 moles
No. of formula unit =0.32*6.022*10^23=1.93*10^23
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A large beaker of water is filled to its rim with water. a block of wood is then carefully lowered into the beaker until the block is floating. in this process, some water is pushed over the edge and collects in a tray. the weight of the water in the tray is?
Weight of water = V * 1000 kg/m^3 * 9.8 m/s^2 = V * 98000 N/m^3
What is weight?
The weight of an object is described as the force acting on the object due to gravity.
The weight of the water pushed over the edge of the beaker will be equal to the buoyant force acting on the floating block of wood, hence the buoyant force is equal to the weight of the water displaced by the block.
We can calculate using the following formula:
Weight of water = Volume of water displaced * Density of water * g
We do not have the values of V
Weight of water = V * 1000 kg/m^3 * 9.8 m/s^2 = V * 98000 N/m^3
In conclusion, this weight will be in Newtons, which is the unit of force. \
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which of the following is an example of hydrolysis? question 19 options: the reaction of two monosaccharides, forming a disaccharide with the release of water. the synthesis of two amino acids, forming a peptide with the release of water, the reaction of a fat, forming glycerol and fatty acids with the release of water the reaction of a fat, forming glycerol and fatty acids with the utilization of water.
The example of hydrolysis is the reaction of a fat, forming glycerol and fatty acids with the release of water the reaction of a fat, forming glycerol and fatty acids with the utilization of water.
Hydrolysis is described as the reaction that involves the reaction of an organic chemical with water to form two or more new substances and usually means the cleavage of chemical bonds by the addition of water.
In other words, hydrolysis is defined as a common form of a chemical reaction where water is mostly used to break down the chemical bonds that exists between a particular substance. The word 'Hydrolysis' is derived from a Greek word hydro which means water and lysis which translates to the word break or to unbind.
An example of hydrolysis is the reaction of a fat, forming glycerol and fatty acids with the release of water the reaction of a fat, forming glycerol and fatty acids with the utilization of water.
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which of the following are involved during chemical bonding? a. neutrons b. valence electrons c. beta particles d. alpha particles
b.valence electron
In
chemical
bonding, valence
electrons
play a role.
An element's atomic structure contains
electrons
, which are subatomic particles with a negative charge. They take part in chemical reactions and bonding while revolving around the atom's nucleus. An element's chemical makeup and place in the periodic table are determined by the number of electrons it contains in each
atom
. The movement of electricity in conductors and the operation of electronic equipment are both greatly influenced by electrons. A lot of natural phenomena, like light and heat, are caused by the fact that electrons have the ability to be excited to greater energy levels by
absorbing
energy and by releasing energy when they return to their initial condition. Quantum mechanics and classical mechanics both provide descriptions of the
behaviour
and motion of electrons.
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what is the name of the protein that travels in the phloem to shoot meristems and interacts with other proteins there to start the process of flower production? A. Flowering locus time B. Flowring locus c C. Cyclodeia d. LEC1 protein
Locator of flowers The protein that goes through the phloem towards shoot meristems and connects with those other proteins always there initiate the flower-formation process is known as T.
Describe protein.a structure composed of amino acids. The body need molecules to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymatic, cytokines, including antibodies.
Why are proteins important to the body?Protein is present in every human cell. An sequence of amino acids makes up the basic building block of proteins. For your body to repair damaged cells and create new ones, you needed protein in your meals. For toddlers, teenagers, and pregnant women, protein is crucial for their growth and development.
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The isomerization of cyclopropane to propylene is a first-order process with a half-life of 19 minutes at 500 °C. The time it takes for the partial pressure of cyclopropane to decrease from 1.0 atmosphere to 0.125 atmospheres at 500 °C is closest to... (A) 38 minutes (B) 57 minutes (C) 76 minutes (D) 152 minutes (E) 190 minutes
t = 57 min., Therefore, we can say that it takes 57 minutes for cyclopropane's partial pressure to drop from 1 atm to 0.125 atm at 500°C.
Is the first-order isomerization of cyclopropane to propylene?Propene (CH3CH=CH2) is produced by the isomerization of cyclopropane, which is a first-order process. A sample of cyclopropane converts to propene in 79 minutes at 760 K.
Isomerization: first-order reaction or not?The reaction is a first-order reaction because it is an isomerization reaction, and its rate constant is expressed in terms of minutes. The sum of the powers or exponents that the concentration terms are raised in the rate law expression can be used to define the order of a reaction.
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when using myplate to plan meals, which food groups should make up half the plate?
Looking at MyPlate, you can quickly see that vegetables and fruits make up half the plate, and grains and protein foods make up about a quarter of the plate each.
The United States Department of Agriculture (USDA) has developed her MyPlate, an easy-to-follow nutrition guide to help parents understand how to feed their children nutritious, balanced meals. Colorfully divided plates contain sections for vegetables, fruits, grains and protein foods. The MyPlate plan is a personalized nutrition plan based on your age, gender, height, weight and physical activity level. This helps you understand how many calories you need each day and shows you your food group goals (what and how much to eat within your caloric intake).
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"Which one of the following can be classified as a strong electrolyte?
A) C₆H₁₂O₆
B) CH₃OH
C) NH₄NO₃
D) HC₂H₃O₂
E) H₂O"
Explanation:
C) NH₄NO₃ can be classified as a strong electrolyte
groups of atoms with characteristic chemical features and properties are called
Answer:
functional group
Explanation:
the atmospheric pressure of the day is 1,086.9 torr and the temperature of the water is 27 c. what is the pressure of the hydrogen gas? express your answer in torr
The pressure of the hydrogen gas is 79.37 torr.the atmospheric pressure of the day is 1,086.9 torr and the temperature of the water is 27 c.
The pressure of the hydrogen gas can be calculated using the ideal gas law, which states that Pressure = (Number of moles x Gas Constant x Temperature) / Volume. In this case, the number of moles would be 1, the gas constant would be 0.08206 L atm mol-1 K-1, the temperature would be 300K, and the volume would be 1L.
p= nrt/v
= 1* 0.08206 L atm mol-1 K-1*300K/1L
= 79.37 torr
PV = nRT, can be used, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. In order to find the pressure of hydrogen gas, information about its volume, amount, and temperature must also be known.
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in general, increasing the temperature of the solvent . select one: a. increases the solubility of liquid solutes, but not solid solutes b. increases the solubility of solid, liquid, but decreases the solubility of gaseous solute. c. affects the solubility of solid solutes only d. increases the solubility of gaseous solute
In general increasing the temperature of the solvent increases the solubility of solid, liquid, but decreases the solubility of gaseous solute.
Generally, the solubility of a solid or liquid solute in a solvent increases with increasing temperature. This happens because the increased temperature in return increases the kinetic energy of the solvent molecules, which enables solute to dissolve more effectively by breaking apart its particles. This results in an increased rate of solubility of the solute in the solvent.
On the other hand, the solubility of a gas solute in a solvent generally decreases with increasing temperature. This happens because the increase in temperature leads to an increase in the kinetic energy of the gas molecules also, which causes them to escape from the solvent more readily. This results in a decrease rate of solubility of the gas in the solvent.
Hence, option b is correct.
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What are the charges of the metal ions in the compounds FeO and Fe2O3? Use the periodic table to help you.
Select the correct answer from each drop-down menu.
The charge of the Fe ion in the compound FeO is
.
The charge of the Fe ions in the compound Fe2O3 is
.
The charge of the Fe ion in the compound FeO is +2.
The charge of the Fe ions in the compound Fe2O3 is +3.
What is the charge of the Fe?The charge of iron (Fe) in a compound depends on the oxidation state of the iron ion in that compound. The oxidation state of an element in a compound indicates the number of electrons it has lost or gained relative to its elemental form. Iron can have different oxidation states such as +2 or +3, depending on the compound.
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if we triple the number of moles in the gas vessel at constant pressure, what would the new volume be?
An increase in moles (n) would result in an increase in volume if pressure remained constant (V).
The new volume would be three times larger.
This is because, according to the Ideal Gas Law, PV = nRT,
where P is pressure,
V is volume,
n is the number of moles,
R is the gas constant, and
T is temperature.
If pressure is constant, an increase in the number of moles
(n) would lead to an increase in volume (V).
The Ideal Gas Law defines a gas's behaviour under ideal circumstances by relating a gas's pressure, volume, and temperature. According to this, the relationship between a gas's pressure and volume is proportional to its temperature in kelvins for a certain amount of gas.
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the normal boiling point of a certain liquid is , but when of urea are dissolved in of , it is found that the solution boils at instead. use this information to calculate the molal boiling point elevation constant of . round your answer to significant digits.
To calculate the molal boiling point elevation constant (Kb) of the liquid, you need to first determine the boiling point of the pure solvent, which is.
Then subtract the boiling point of the solution, which is , from the boiling point of the pure solvent. The difference is the boiling point elevation, which is . Thus, the molal boiling point elevation constant (Kb) is equal to.
The molal boiling point is the boiling point of a solution at a given molal concentration. The boiling point is affected by the intermolecular forces of the molecules in the solution, and the molal boiling point is determined by the boiling point of the solvent and the magnitude of the intermolecular forces of the solute.
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How many moles of water are produced when 7 moles of hydrogen gas react with 3 moles of oxygen gas?
2H₂O₂->2H2 ,O
O 2 moles of water
O 3 moles of water
O 5 moles of water
O 6 moles of water
5 moles of water is the correct answer
What is mole ?
A mole is a unit of measurement used in chemistry to quantify the amount of a substance. It is defined as the amount of a substance that contains Avogadro's number of entities, which is approximately 6.022 x 10^23 particles. The mole is used to express the amount of a substance in terms of its molecular or atomic count. The mole is particularly useful in chemical reactions, where it is used to balance the number of atoms or molecules of the reactants and products. For example, in a balanced chemical equation, the number of moles of each reactant must be equal to the number of moles of the corresponding product.
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2.26 (a) calculate %ic of the interatomic bonds for the intermetallic compound tial3. (b) on the basis of this result what type of interatomic bonding would you expect to be found in tial3?
The percentage of ionic characters in compounds that have several covalent characters can be calculated by the following equation:
Percent ionic character = observed dipole moment / calculated dipole moment, assuming 100% * 100 ionic bond
The % ionic character is a function of the electronegativity of the XA and XB ions.
The electronegativity of titanium, X[tex]__{Ti}[/tex] = 1.54The electronegativity of aluminum, X[tex]__{Al}[/tex] = 1.61Percentage of ionic character for TiAl₃ ;
%IC = {1-exp [-0.25(X[tex]__{Ti}[/tex] - X[tex]__{Al}[/tex])]} * 100
= {1-exp [-0.25(-0.07)]} * 100
= {1-exp [0.0175)]} * 100
= {1-1.0176} * 100
= {0.176} * 100
= 1.76%
Since the percent ionic character is very small (1.76%), and this intermetallic compound is composed of two metals Al and Ti, the bond is strictly metallic.
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calculate the molar mass of magnesium sulfate heptahydrate, mgso4·7h2o.
The molar mass of magnesium sulfate heptahydrate, mgso4·7h2o is 246 g/mol.
Molar mass simple: What is it?The mass in grams of one mole of a substance is known as its molar mass. The symbol for molar mass is g/mol, or grams per mole.
Why is it referred to as molar mass?The total mass of all the atoms that make up a mole of a specific molecule, measured in grams, is known as the molar mass or molecular weight. The measurement is made in grams per mole.
What does MgSO4 7H2O's molecular formula look like?Magnesium sulfate heptahydrate, often known as epsomite, is a mineral with the chemical formula MgSO47H2O. Epsomite often takes the form of vast encrustations, however the orthorhombic system can occasionally produce acicular or fibrous crystals.
Molar mass of MgSO₄⋅ 7H₂O:
Molar mass = 24.305 + 32.065 + 16×4 + 7 (1.008×2 +16)
Molar mass = 24.305 + 32.065 + 64 + 7 (18.016)
Molar mass = 24.305 + 32.065 + 64 + 126.112
Molar mass = 246.482 g /mol
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separation of proteins in the first dimension of 2d gel electrophoresis is based on a protein’s molecular weight. T/F
The above statement is True.
The first dimension of 2D gel electrophoresis is usually isoelectric focusing, which separates proteins based on their isoelectric point (pI), which is related to their molecular weight.
By using the equation y = mx + b, we may utilize gel electroscopes to calculate the molecular weight of a protein.
DNA fragments are divided using the gel electroscopes method based on their size. By formulating the equation y = mx + b and solving for y, it is possible to determine the Molecular Weight of the unknown protein. Samples and standards are run across the gel using SDS-PAGE. Apply the desired dye to the gel, then de-stain it to reveal the protein bands. Use the Quantity One analytical application to do the calculation graphically or otherwise (or equivalent).
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You mix 2 moles of HBr with 3 moles of KOH in enough water to make 1 L of solution. How much KBr do you expect to make?
a. 2 moles
b. 5 moles
c. 3 moles
d. 1 moles
If two moles of HBr and three moles of KOH are mixed with enough water to make one liter of solution, two moles of KBr are produced. Hence option 'a' is correct.
Write about a mole.A mole is the quantity of a substance made up from 6.022 X 1023 of it's own constituent constituents, including such particle, atoms, ion, molecules, etc. The unit of measurement for atoms, molecules, and ions is called a mole.
According to the chemical reaction between HBr and KOH, which is balanced: HBr + KOH KBr + H2O
As can be seen, 1 mole of HBr reacts with 1 mole of KOH to form 1 mole of KBr. Because of this, when 2 moles of HBr & 3 mole of KOH are mixed, all of the HBr will react whereas only 2 mole of KOH are required. You can expect to produce two mole of KBr as a result.
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