3. Use trifluoroacetic acid as a remedy 4. Use isothiocyanate to treat 5. Use dinitrofluorobenzene as a treatment 6. Take the amino acid that has been derivatized.
What role does phenyl isothiocyanate play in the degradation of Edman?The first amino acid's uncharged alpha amino group combines with phenyl isothiocyanate to generate an intermediary molecule during the Edman degradation process. An identified amino acid is now present in this intermediate protein molecule. Edman's Reagent, commonly known as phenylisothiocyanate (PITC), permits the progressive breakdown of a polypeptide chain's amino acids chain to provide initial structural data.
Why is Sanger technique superior to Edman degradation?Edman's methodology required first uppercut ting the protein, as was the case with Sanger's approach, however this was accomplished using a chemical reagent as opposed to acids and enzymes. He utilized a reagent called
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A 0.1 m solution is diluted by three orders of magnitude. what is the new concentration?
0.1 m solution is diluted by three orders of magnitude. The new concentration is 0.0001M.
What is meant by solution?A homogenous mixture of one or more solutes that have been dissolved in a solvent is referred to as a solution. A solute dissolve in a solvent to form a homogenous mixture. Solute: A material that dissolves in a solvent to form a homogenous mixture.
In chemistry, a solution is a homogeneous mixture of two or more compounds in relative proportions that can be constantly changed up to what is referred to as the limit of solubility. Although the term "solution" is frequently used to refer to the liquid state of matter, solutions of gases and solids are also possible.
Calculation:The new concentration will be 0.1/10x10x10 = 0.0001 m
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where does the equivalence point occur on a titration curve for a strong acid/strong base titration?
When a strong acid and a strong base are titrated, the curve starts off acidic and then turns basic after reaching the equivalence point, which happens at pH = 7.
When a solution is titrated, the pH is represented graphically by a titration curve. During a titration between a strong acid and strong base, the equivalence point occurs when the moles of acid and base are the same and the pH is 7. The point at which chemically equivalent amounts of reactants have been combined is known as the equivalence point, also known as the stoichiometric point, in a chemical process. The equivalence point for an acid-base reaction is the point at which, in accordance with the chemical reaction, equal amounts of acid and base would neutralize one another.
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A5 M solution of 100 mL of glucose contains how many grams of glucose, molecular mass = 180 Daltons? 1.0 90 360 6.02 x 10^23 180
A 1.0 M solution of 100 mL of glucose contains 180 grams of glucose.
What is glucose?Glucose is a simple sugar molecule and the most important carbohydrate in human metabolism. It is a monosaccharide, meaning it has a single sugar unit, and is found in a variety of plant and animal sources.
The molecular mass of glucose is 180 Daltons. To calculate the amount of glucose in the M solution of 100 mL of glucose, we need to multiply the molecular mass of glucose (180 Daltons) by the molarity of the solution (1.0 M):180 Daltons x 1.0 M = 180 grams of glucose.
Therefore, a 1.0 M solution of 100 mL of glucose contains 180 grams of glucose.
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Which properties of an element are determined by valence electrons?
Select all correct answers.
electricity conduction
magnetism
atomic mass
O reactivity
The valence electrons play a major role in determining the chemical characteristics of the elements. Due to their shared valence shell electron arrangement, the elements in a group have comparable chemical characteristics.
Why are there electrons in an atom?The negatively charged atom's electrons are responsible for this. An atom's total negative charge, which is produced by all of its electrons, counteracts the positive charge of the protons in the atomic nucleus. In comparison to all the other atom's constituents, electrons are quite tiny.
Why is it that our bodies require electrons?To carry electrical currents, our cells have been specially designed. We cannot move or think without the help of electricity, which the nervous system needs to deliver impulses to the brain and throughout the body.
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Answer:
Explanation:
The correct answerers are Magnetism, Reactivity, and Electricity conduction.
For a theoretical yield of 5.3 g and actual yield of 4.00551 g, calculate the percent yield for a chemical reaction.
Select all that apply
To calculate the percent yield for a chemical reaction, you need to know the theoretical yield and the actual yield of the product.
The percent yield is calculated using the following formula:
% yield = (actual yield / theoretical yield) x 100
In this case, the theoretical yield is 5.3 g and the actual yield is 4.00551 g.
So, the percent yield is:
% yield = (4.00551 g / 5.3 g) x 100 = 75.59 %
Therefore, the percent yield for the chemical reaction is 75.59%.
It's important to note that percent yield is a measure of the efficiency of a chemical reaction, it is the ratio of the actual yield of product to the theoretical yield, multiplied by 100. The theoretical yield is calculated from the stoichiometry of the balanced equation for the reaction, and the actual yield is the amount of product obtained in the laboratory. A yield of 100% indicates that all the reactant has been converted to product, while a yield less than 100% means that some of the reactant has been lost or wasted, and a yield greater than 100% is not possible in real chemistry.
0.50 moles of gas take up 10.5 L
of space under constant pressure
and temperature conditions.
What volume is required to hold
2.0 moles of the gas?
Answer:
The volume required to hold 2 moles of the gas is 42 L
Explanation:
By setting up mole and volume ratio:
moles : volume
0.50 : 10.5
2.0 : X
thus X would be equal to:
(2.0 x 10.5)/0.50
= 21/0.50
= 42 L
Answer: 42
Explanation:
how many moles of o are in 1 mole of al(no3)3?
a. 3 mol b. 9 mol c. 12 mol d. 1 mol e. 6 mol
In total, there are nine oxygen atoms in every one aluminum nitrate. Since one mole of aluminum nitrate contains nine moles of oxygen, the answer will be nine when discussing mole units.
How many O atoms make up an Al no2 3 compound?
Each unit of aluminum nitrate's chemical formula comprises three nitrate ions, as can be seen by looking at the compound's chemical formula. Additionally, three oxygen atoms make up each nitrate ion. This indicates that there are nine oxygen atoms in one formula unit of aluminum nitrate.
How many oxygen atoms are there in al2o3?
Aluminum oxide has three oxygen atoms because its structure is made up of two aluminum atoms bound to two oxygen atoms each.
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State 4 evidences to show
that matter Consists of particles
Answer:
All matter are composed of small particle which is known as atom.The atom cannot be divided into smaller particle, atom can neither be created nor can destroyed.All atoms in same element have same mass and properties.More that one atom combine to form compound.What is the force that exists between two atoms within a single molecule?
Answer:Intermolecular forces
Explanation:See in a molecule these intermolecular forces hold the atoms together which decides the rigidity of the material.
I hope the answer was helpful
7. The percent by mass of chlorine in C2H5Cl is A) 51.94% B) 53.94% C) 64.94% D) 54.94%
The percent by mass of chlorine in C2H5Cl is D) 54.94%.
In C2H5Cl, The molecular weight of C2H5Cl is (12.01 + (2*1.01) + 35.45) = 64.47 g/mol
The weight of chlorine in the compound is 35.45 g/mol.
The mass percent of chlorine in the compound can be calculated by (mass of chlorine/total mass) x 100%.
Therefore, (35.45/64.47) x 100% = 54.94%
So, The percent by mass of chlorine in C2H5Cl is 54.94%.
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at a certain temperature, the solubility of n2 gas in water at 2.04 atm is 48.0 mg of n2 gas/100 g water . calculate the solubility of n2 gas in water, at the same temperature, if the partial pressure of n2 gas over the solution is increased from 2.04 atm to 6.00 atm .
According to henry's law, The solubility of n2 gas in water, at the same temperature is, 141 mg/100 g water.
What qualities make up solubility?The maximum amount of a chemical which will dissolves in a volume of solvent at a given temperature is referred to as its solubility. Varying compounds have quite different solubilities, which is a characteristic of a specific solute-solvent pair.
Henry's Law says that the solubility of a gas is directly proportional to the pressure so:
S1/P1 = S2/P2
48 mg/100g / 2.04 atm = S2/6 atm
S2 = 141 mg/100 g water
solubility of n2 gas is 141 mg/100 g water
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Pansy has measured the volume of a sample of oxygen gas and has found that she has a total of 9.03 moles of the gas. What is the mass of this sample of oxygen gas? Please round your answer to two digits after the decimal point, and remember to include correct, complete units (including substance formula).
Answer:
Pansy has measured the volume of a sample of oxygen gas and has found that she has a total of 13.44 moles of the gas. What is the mass of this
Explanation:
n=m/Mr. m= nxMr = 13.44 x 32 = 430.08 g of oxygen
1. I. CH₂=CH-CH₂
II, CH₂-C
CH₂
III.
CH₂
1Ct₂
Which of the following orders is correct for the stability of these radicals?
a) I > II > III
c) I > III > II
b) III >II>I
d) III >1>II
Answer:
Option A: I > II > III.
Explanation:
The stability of radicals depends on the number of bonds and electrons they have. In general, radicals with more bonds and electrons are more stable than those with fewer bonds and electrons.
In this case, the correct order of stability of the radicals is option (a) I > II > III.
I. CH₂-C• is the most stable radical because it has the most number of bonds and electrons, it has 4 sigma bonds and 4 pi electrons.
II. CH₂• is less stable than I because it has 3 sigma bonds and 2 pi electrons.
III. CH• is the least stable of the three radicals because it has only 2 sigma bonds and 1 pi electron.
Option III >II>I, or III >1>II, is not correct because it doesn't match with the stability order of the given radicals.
chemical elements that do not exist in nature but can be created in the laboratory are known as synthetic elements. moscovium (\ce{mc}mcm, c), a synthetic element with atomic number 115115115, was first synthesized in 200320032003. a hypothetical mass spectrum for a sample of \ce{mc}mcm, c containing 101010 atoms is shown below.using the information in the spectrum, calculate the average atomic mass of \ce{mc}mcm, c in the sample. write your answer using four significant figures.
Nihonium (Nh) mass is 285.7 u, a synthetic element with atomic number 113, was the first synthesized chemical elements that do not exist in nature but can be created in laboratory.
How are laboratory-produced synthetic elements made?Particle accelerators produce synthetic elements. Two tiny elements are propelled at breakneck velocities and crash with one another. Their nuclei combine to form one bigger element. Before it degrades, the element is examined using lab equipment.
Mass of Nb from the figure:
=> 10% x 284.2 + 30% 285.2 + 60% x 286.2
=> 285.7 u (atomic mass unit)
What purposes serve artificial elements?Transuranium elements and the actinoid series are typically found in period 7, along with occasionally created artificially. These elements can be utilised for detectors and spectrophotometers in addition to being the typical fuel for chemical reactors. Some are applied in the pharmaceutical sector.
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Chemical elements known as synthetic that do not exist in nature but = was elements_ Nihonium can be created in the laboratory are the first synthesized in 2004. (Nh), synthetic element with atomic number 113, hypothetical mass spectrum for sample of Nh containing 10 atoms shown in the picture. Using this spectrum information, calculate the mass of Nh in this sample
Answer:
285.7 u.
Explanation:
1 / 4
The equation for average atomic mass is
average atomic mass
=
∑
�
=
1
�
(
relative abundance
×
atomic mass
)
�
average atomic mass=
i=1
∑
n
(relative abundance×atomic mass)
i
start text, a, v, e, r, a, g, e, space, a, t, o, m, i, c, space, m, a, s, s, end text, equals, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, left parenthesis, start text, r, e, l, a, t, i, v, e, space, a, b, u, n, d, a, n, c, e, end text, times, start text, a, t, o, m, i, c, space, m, a, s, s, end text, right parenthesis, start subscript, i, end subscript
We can use this equation, along with the relative abundances and atomic masses of each isotope in the mass spectrum, to calculate the average atomic mass of
N
h
Nh in the sample.
Hint #22 / 4
The mass spectrum shows three peaks, each corresponding to a different isotope of
N
h
Nh. We can determine the relative abundance of each isotope by dividing the number of atoms of that isotope present in the sample by the total number of atoms in the sample:
Isotope
N
h
-
284
Nh-284
N
h
-
285
Nh-285
N
h
-
286
Nh-286
Atomic mass (
u
u)
284.2
284.2284, point, 2
285.2
285.2285, point, 2
286.2
286.2286, point, 2
Relative abundance
1
a
t
o
m
10
a
t
o
m
s
=
.
1
10 atoms
1 atom
=.1
3
a
t
o
m
s
10
a
t
o
m
s
=
.
3
10 atoms
3 atoms
=.3
6
a
t
o
m
s
10
a
t
o
m
s
=
.
6
10 atoms
6 atoms
=.6
Hint #33 / 4
Plugging the relative abundances and atomic masses into the equation for average atomic mass, we get:
average atomic mass
=
∑
�
=
1
�
(
relative abundance
×
atomic mass
)
�
=
(
.
1
×
284.2
u
)
+
(
.
3
×
285.2
u
)
+
(
.
6
×
286.2
u
)
=
28.42
u
+
85.56
u
+
171.7
u
=
285.7
u
average atomic mass
=
i=1
∑
n
(relative abundance×atomic mass)
i
=(.1×284.2 u)+(.3×285.2 u)+(.6×286.2 u)
=28.42 u+85.56 u+171.7 u
=285.7 u
Hint #44 / 4
So, based on the mass spectrum, the average atomic mass of
N
h
Nh in the sample is
285.7
u
285.7 u.
When is an object acceleration? Choose all that apply
Any
procedure
where the velocity varies is referred to as
object acceleration.
There are only two ways to accelerate
changing your
speed
or
changing your
direction
, or
changing both.
This is because
velocity
is both a speed and a direction.
No matter how quickly you're moving, you can't possibly be accelerating if you're not also altering your direction and speed.
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acceleration
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given the bright-line spectra of three elements and the spectrum of a mixture formed from at least two of these elements: which elements are present in this mixture?
By analyzing the spectra of the three elements and the spectrum of the mixture, it should be possible to identify which elements are present in the mixture.
What is mixture?Mixture is a combination of two or more substances that are mixed together but not chemically combined. This means that the individual components remain separate, and can be separated from each other. Mixtures can be found in nature and in everyday life; they can be solid, liquid, or gas.
In most cases, the spectral lines of each element will be distinct and recognizable, allowing for a clear identification of which elements are present in the mixture.
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Imagine yourself in the shoes of Dimitri Mendeleev. You are provided with two sets of cards that list properties of various elements. These cards resemble the cards used by Mendeleev when he grouped elements. One set of cards lists the names of known elements and their properties, while the other set of cards lists the properties of a few unknown elements. These sets are shown below.
I would use the information from both sets of cards to create a comprehensive table of elements that organizes the elements according to their properties. This table would allow for easy prediction of the properties of new elements based on their position within the table.
Who invented the periodic table?As a theoretical chemist and inventor of the periodic table, I would approach this task by first organizing the known elements based on their properties, such as atomic weight, melting point, boiling point, and valence. I would then look for patterns and trends in the properties of the known elements and group them together accordingly.
Next, I would examine the properties of the unknown elements and compare them to the known elements. I would try to find a place for each unknown element within the table of known elements, based on its properties. If the properties of the unknown element did not match any of the known elements, I would consider the possibility of a new element that should be added to the table.
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if 25 milliliters of 0.80 m hcl is used to completely neutralize 40 milliliters of naoh solution, what is the molarity of the base? group of answer choices 5.0 m 50 m 0.05 m 0.50 m
The base has a molarity of 0.5M if 25 milliliters of 0.80M HCl are used to fully neutralize 40 milliliters of NaOH solution.
How do you determine molarity?The following expression can be used to determine a solution's molarity:
M1V1 = M2V2
Where M1 is the acid's molarity.
M2 stands for the base's molarity.
V1 is equal to the acid's volume.
V2 is the volume of the base.
25 × 0.80 = 40 × M2
20 = 40M2\sM2 = 20/40\sM2 = 0.5M
As a result, the molarity of the base is 0.5M if 25 milliliters of 0.80 M HCl are used to totally neutralize 40 milliliters of NaOH solution.
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3 Cu 8HNO3 --> 3 Cu(NO3)2 2 NO 4 H2O In the above equation how many moles of water can be made when 158.4 grams of HNO3 are consumed?
The generated grammes of water are requested by the stated statement and are discovered to be 1427.17 g.
What are an equation and a reaction?A new substance is produced as a result of a chemical reaction in which bonds between the units of the reactant and product are broke and new groups are attached. Simply said, a stoichiometry is a mathematics statement that describes how reactants produce products. The five basic categories of chemical reactions are combination, hydro, mono, quintuple, and combustion.
[tex]158.4 \mathrm{~mol} \mathrm{HNO} \mathrm{NO}_3 * \frac{4 \mathrm{molH}_2 \mathrm{O}}{8 \mathrm{molHNO}_3} * \frac{18.02 \mathrm{gH}_2 \mathrm{O}}{1 \mathrm{molH}_2 \mathrm{O}}[/tex]
where 18.02 is just the molar water content and 4:8 is the water-to-nitric acid molecule ratio. Thus, the following is the result:
1427.17 g of H2O
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What type of connecting force is permanent until the molecules go through a chemical reaction?
Answer: B intermolecular force
Explanation:
The answer to this question is Intermolecular force, since particles are connected to each other with a respective force prior to chemical reaction and this respective force is categorized on the basis of the nature of the particle all these forces are majorly considered an intermolecular force.
inter means between, molecular means molecules, resulting in binding force between molecules.
there are several different types of intermolecular forces :
Dispersion,
Dipole-Dipole,
Hydrogen Bonding
Ion-Dipole.
several types of intramolecular forces are:
Ionic bond( formed between ions)
Covalent bond (formed between carbon atoms)
metallic bond( formed between metallic atoms)
Answer: C. intarmolecular
Explanation:
3. When atoms bond, the electron configuration of each atom in the bond
resembles those of the nearest
1.Halogen
2.Noble Gas
3.Alkaline earth metal
4.Alkali metal
Answer:
Noble gas
Explanation:
Noble gases are the most stable elements on the periodic table, so every element aims to bond in a way that will make them have the same number of valence electrons as the noble gases. Valence electrons are the electrons in the outer ring of an element. Noble gases have eight valence electrons, which is the most possible. All elements aim to be unreactive in this manner. Hope this helps!
Calculate the percent ionization of 8.0×10−3 M butanoic acid (Ka=1.5×10−5) B. Calculate the percent ionization of 8.0×10−3 M butanoic acid in a solution containing 8.0×10−2 M sodium butanoate.
4.325% of 8.0 × [tex]10^{-3}[/tex] M butanoic acid be ionised, while only 0.018% of 8.0 ×[tex]10^{-3}[/tex] M butanoic acid be ionised in a solution that contains 8.0 ×[tex]10^{-2}[/tex] M sodium butanoate.
Ionization: What is it?Ionization is any process that involves adding or removing electrons to change electrically neutral molecules or atoms (ions) into electrical charges atoms or molecules (ions).
A. [Butanoic acid] = 8.0*10−3 M
Ka = 1.5*10∧-5
Butanoic acid ionizes as:
HA ⇄ H+ + A-
Initially 8.0*10−3 0 0
Finally 8.0*10−3 - x x x
Ka = x*x / 8.0*10−3 - x
1.5*10−5 = x*x / 8.0*10−3
1.2*10^-7 = x*x
x = 3.46*10^-4 M
Percent ionization = (3.46*10^-4 / 8.0*10−3) * 100
= 4.325 %
B). [Sodium butanoate] = 8.0*10^-2 M
HA ⇄ H+ + A-
Initially 8.0*10−3 0 0
Finally 8.0*10−3 - x x 8.0*10^-2 + x
Ka = x*(8.0*10^-2 + x) / 8.0*10−3 - x
1.5*10−5 = x*8.0*10^-2 + x*x / 8.0*10−3
1.2*10^-7 = x*x + x*8.0*10^-2
x*x + x*8.0*10^-2 - 1.2*10^-7 = 0
x = 1.49*10^-6 M
Percent ionization = (1.49*10^-6 / 8.0*10−3) * 100
= 0.018 %
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(a) Sketch the molecular orbitals of the H2 - ion and draw its energy-level diagram. (b) Write the electron configuration of the ion in terms of its MOs. (c) Calculate the bond order in H2 -. (d) Suppose that the ion is excited by light, so that an electron moves from a lower-energy to a higher-energy molecular orbital. Would you expect the excited-state H2 - ion to be stable
(a) Sketch the H 2 - ion's molecular orbitals and create an energy-level diagram for it. Indicate the ion's electron configuration using its MOs.
(b) The image below shows how two electrons will be positioned in a bonding molecular orbital. As a result, the electron configuration of the molecular orbitals will be 1 s 2, 1 s 1, and 1 s 2 sigma 1s*1.
(c) Bond order for H2 is 1/2 (2-0) = 1, indicating that there is only one bond in H2. The orbital for antibonding is void. H2 is a stable molecule as a result.
(d) Assume that an electron in the ion transfers from a lower-energy to a higher-energy molecular orbital as a result of the ion being activated by light.
What is molecular orbital theory explain?According to the molecular orbital hypothesis, every atom has a tendency to group together to create molecular orbitals. As a result of this configuration, electrons can be found in a variety of atomic orbitals and are frequently linked to diverse nuclei. Similar to how the energy states of atomic orbitals are filled, the electrons of molecules fill the new energy states of molecular orbitals.
What is the purpose of molecular orbitals?A molecular orbital, which is used in chemistry, is a mathematical function that describes the position and wave-like activity of an electron in a molecule. Calculations involving chemical and physical characteristics, such as the likelihood of discovering an electron in a certain area, can be made using this function.
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The amount of carbon 14 present after t years is given by the exponential equation A(t)=A0ekt, with k=− ln2/5600. Using carbon 14 dating of charcoal found along with fossilized leaf fragments, botanists arrived at an age of 48,000 years for a plant. What percent of the original carbon 14 in the charcoal was present?
The exponential formula (A/Ao) x 100 ≈ 2.63 x 10-3 x 100 ≈ 0.263 gives the quantity of carbon 14 that was present after t years, meaning that 0.263 % of the original was still there.
What is a carbon's purpose?Metals are melted using coke made from coal and charcoal, two forms of impure carbon. Inside the steel and iron sectors, it is particularly crucial. Pencil leads, electric motor brushes, and furnace linings all include graphite. For filtration and purification, activated charcoal is employed.
Are people harmed by carbon?This information on health risks is predicated on exposures with carbon black, and elemental carbon. Chronic inhalation of carbon black can harm the heart and lungs, either permanently or temporarily.
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what is the ph and poh of a solution made by adding water to 15g of hcl until the final solution was 2500 ml
The pH and pOH of the solution made by adding water to 15g of HCl until the final solution was 2500 mL are 3.79 and 10.21, respectively.
What is final solution?The final solution is a term used in chemistry to refer to the last step in a sequence of reactions or processes. The final solution is the one that yields the desired product or result.
The pH and pOH of a solution made by adding water to 15g of HCl until the final solution was 2500 ml can be calculated using the following equation:
pH = -log [HCl]
Where [HCl] is the molarity of the HCl solution.
To calculate the molarity of the HCl solution, we need to know the number of moles of HCl in the solution. We can calculate this by using the following equation:
Number of moles = (mass of HCl) / (molar mass of HCl)
Using this equation, we can calculate the number of moles of HCl in the solution:
Number of moles = (15 g) / (36.46 g/mol) = 0.41 mol
Now, we can calculate the molarity of the HCl solution using the following equation:
Molarity = (Number of moles) / (Volume of solution)
Using this equation, we can calculate the molarity of the HCl solution:
Molarity = (0.41 mol) / (2500 mL) = 0.00164 M
Now, we can use this molarity to calculate the pH of the solution using the following equation:
pH = -log [HCl] = -log (0.00164 M) = 3.79
The pOH of the solution can be calculated using the following equation:
pOH = 14 - pH = 14 - 3.79 = 10.21
Therefore, the pH and pOH of the solution made by adding water to 15g of HCl until the final solution was 2500 mL are 3.79 and 10.21, respectively.
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what is the assumption of idea gas? question 4 options: a) perfect collision between all molecules and container walls b) negligible molecular interaction c) negligible volume occupies by the melecules d) all of the above are correct
There are four guiding presumptions for a fuel to be "ideal": The gas particles' volume is minuscule. There are no intermolecular forces (attraction and repulsion) between the equal-sized gas particles and other gas particles. According to Newton's Laws of Motion, the gas particles travel at random.
What exactly is an ideal gas?An ideal gas is one with both the quantity of such molecules and the forces between them are so negligibly small as to not affect the behavior of such gas.
Describe ideal gas versus actual gas.Ideal gas is a fictitious gas that, under all temperature and pressure conditions, complies with the Ideal Gas Law. Real gases are any gases that exist in the natural world. Only in conditions of extremely high temperatures and low pressure do real gases adhere to the Ideal Gas Law. Therefore, ideal gas isn't a true gas.
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calculate the ph of a 0.20 m solution of nh4br at 25.0 ∘c.
The pH of a 0.20 m solution of NH₄Br at 25.0 ∘c is 4.96.
pH is defined as the measure of the concentration of H⁺ ions, the acidity as well as alkalinity of a solution. Aqueous solutions at 25 ° C with a pH of less than 7 are basic and acidic or the alkaline solutions are those having pH greater than 7. All the acids and bases does not react with the same chemical compound at the same rate. Some will react vigorously, some moderately while others not show any reaction.
Use the Ka=5.6x10^-10
NH₄+(aq)+H₂0(l)=NH₃(aq)+H₃O+(aq)
I 0.20 0 0
C -x +x +x
E 0.20-x x x
(x^2)/(0.20-x)=5.6x10^-10
x=0.000011=[H₃O+]
pH=-log[H₃O+]
-log(0.000011)
pH=4.96
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which phase transitions result in a decrease in the entropy of their surroundings? select all that apply. group of answer choices fusion sublimation vaporization freezing condensation deposition
Condensation reduces a system's entropy by changing a gas into a liquid state while also dissipating heat outside the system.
What affects the environment's entropy?Since heat (heat) is being released from the system into the environment, the entropy of a environment will rise.The subscript "systems" is frequently omitted from the heat in the previous iteration of this equation since heat is typically defined from the viewpoint of the system.
What modifications cause an increase in entropy?As the temperature rises, entropy increases.The kinetic energy of the substance's particles increases as temperature rises.
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he accident occurred during a safety test on the steam turbine of an RBMK-type nuclear reactor. During a planned decrease of reactor power in preparation for the test, the power output unexpectedly dropped to near-zero. The operators were unable to restore the power level specified by the test program, which put the reactor in an unstable condition. This risk was not made evident in the operating instructions, so the operators proceeded with the test. Upon test completion, the operators triggered a reactor shutdown. But a combination of operator negligence and critical design flaws had made the reactor primed to explode. Instead of shutting down, an uncontrolled nuclear chain reaction began
The operators were unable to restore the power level specified by the test program, which put the reactor in an unstable condition.
What is a project Reactor?Project Reactor is a fully non-blocking foundation with back-pressure support included. It's the foundation of the reactive stack in the Spring ecosystem and is featured in projects such as Spring WebFlux, Spring Data, and Spring Cloud Gateway.
What is basic reactor?Light-water reactors (LWRs) are power reactors that are cooled and moderated with ordinary water. There are two basic types: the pressurized-water reactor (PWR) and the boiling-water reactor (BWR). In the PWR, water at high pressure and temperature removes heat from the core and is transported to a steam generator.
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use the information in the aleks data tab to sort the following chemical species by reducing power.
species : Zn(s) ; Ni(s) ; Ag(s) ; Na(s)
reducing power : choose one choose one choose one choose one
As per the aleks data tab the chemical species can be given as per the following: Ag<Zn<Mg<Na
This is not a redox reaction. None of the species are reduced and none are oxidized.
The decreasing power will be greater the lower the reduction potential.
A chemical reaction known as an oxidation-reduction (redox) reaction includes the exchange of electrons between two substances. An oxidation-reduction reaction is any chemical process in which a molecule, atom, or ion experiences a change in its oxidation number as a result of gaining or losing an electron.
Redox reactions are those in which one chemical is reduced and another is oxidized. Here, oxygen is being introduced, which causes C to oxidize into CO, and oxygen is being removed, which causes ZnO to decrease to Zn. It is a redox reaction as a result.
Redox reactions are those in which there is a change in the oxidation number, with both an increase and a drop in number.
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