nitric oxide reacts with oxygen to form nitrogen dioxide: what is for the forward reaction if the equilibrium concentration of is 0.200 m, is 0.100 m, and is 0.250 m at 25°c?
Answers
The forward reaction refers to the conversion of nitric oxide and oxygen into nitrogen dioxide. The equilibrium concentrations given suggest that the reaction has reached a state of balance, where the concentrations of the reactants and products remain constant over time.
To determine the forward reaction, we need to use the equilibrium constant, denoted as Kc. The equation for the reaction is:
NO(g) + 1/2 O2(g) ⇌ NO2(g)
The expression for Kc is:
Kc = [NO2]/[NO][O2]^(1/2)
where [ ] denotes concentration in molarity (M).
Using the given equilibrium concentrations, we can plug in the values to calculate Kc:
Kc = (0.250)/(0.200)(0.100)^(1/2)
Kc = 3.54
The value of Kc tells us that at equilibrium, the concentration of nitrogen dioxide is favored over nitric oxide and oxygen. In other words, the forward reaction is proceeding to a significant extent, since Kc is greater than 1.
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Related Questions
Could someone please help me with this?
Answers
B. The final speed of the ball when it hits the ground is determined as 24.2 m/s.
Final speed of the ballThe final speed of the ball can be determined by applying the principle of conservation of energy as follows;
K.E = P.E
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
v is the maximum velocity of the ballh is the initial height of the ballg is acceleration due to gravitySubstitute the given parameters and solve for the maximum speed of the ball.
v = √(2 x 9.8 x 30)
v = 24.2 m/s
Thus, the final speed of the ball when it hits the ground is determined as 24.2 m/s.
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What is Decomposition Reaction
Answers
Answer:
Explanation:
Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.
The decomposition reaction can be represented by the general equation:
AB → A + B
Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.
There are different types of decomposition reactions, including:
Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):
CaCO3 → CaO + CO2
Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):
2H2O → 2H2 + O2
Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:
Cl2 → 2Cl
These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.
Answer:
Explanation:
reaction in which a compound breaks down into simpler substances or elements
Which of the following options correctly describe enolate formation for a ketone such as the one shown? Select all that apply.
a. Deprotonation of the alpha carbon
b. Formation of a double bond between the alpha carbon and carbonyl carbon
c. Loss of a proton from the carbonyl oxygen
d. Formation of a nucleophile
Answers
The following options correctly describe enolate formation for a ketone such as the one shown are:
a. Deprotonation of the alpha carbon
d. Formation of a nucleophile
For a ketone, the process of enolate formation involves the following options:
a. Deprotonation of the alpha carbon: This option is correct. Enolate formation involves the removal of a proton (deprotonation) from the alpha carbon adjacent to the carbonyl group. The resulting species is called an enolate.
b. Formation of a double bond between the alpha carbon and carbonyl carbon: This option is incorrect. Enolate formation does not involve the direct formation of a double bond between the alpha carbon and the carbonyl carbon. Instead, the enolate is formed as an intermediate, which may subsequently tautomerize to form an enol, where the double bond forms between the alpha carbon and the carbonyl carbon.
c. Loss of a proton from the carbonyl oxygen: This option is incorrect. In the process of enolate formation, a proton is not lost from the carbonyl oxygen. Instead, a proton is removed from the alpha carbon, resulting in the formation of the enolate.
d. Formation of a nucleophile: This option is correct. Enolate formation leads to the creation of a nucleophilic species. The negative charge that develops on the oxygen of the carbonyl group makes it nucleophilic, and the alpha carbon becomes electron-rich and capable of nucleophilic attack.
Therefore, correct options are:
a. Deprotonation of the alpha carbon
d. Formation of a nucleophile
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How to determine intermolecular forces.
Answers
Answer:
Incase you have H and F and another H and F
How many different sublevels are in the first energy level.
Answers
Answer:
There is only one sub level in the first principal energy level, and it is 1s
Explanation:
trust
What is the volume of the apple?
1. 7ml
2. 10ml
3. 3ml
4. 17ml
Answers
Answer:
3ml
Explanation:
10ml-7ml=3ml
What pairs of aqueous solutions form percitipate when mixed?
Answers
When silver nitrate and sodium chloride are combined with water, silver chloride will solidify and precipitate out of solution. In this instance, silver chloride is the precipitate.
Which four liquid precipitation examples are there?Precipitation includes the following: rain, hail, sleet, and snow. Rain forms when water vapour in clouds condenses on dust particles, which eventually grow too big to stay in the cloud and fall to the ground, where they collect more water and enlarge further.
What does the precipitation reaction in aqueous solution look like as an example?The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride precipitated out, is among the greatest examples of precipitation reactions. This precipitation reaction resulted in the formation of an insoluble salt.
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lead crystallizes in a face-centered cubic unit cell with an edge length of 495.08 pm. calculate the density of the metal.
Answers
The density of the metal with an edge length of 495.08pm is 549.06pm
Lead crystallizes with FCC lattice, Z = 4
√2a = 4r
r = 175.01pm
The density is given as:-
D=ZM/N0(a3) =5.616
Edge length a=404.91pm
For a BCC lattice, the 3D diagonal (l) and edge length (a) is related as:-
l=√3al=1.732×317=549.06pm
The density (d) of a crystal depends on the number of atoms occupying each unit cell, the mass of each atom (m), and the edge length of the unit cell (a). There are three types of cubic lattices,
1. Simple Cubic
2. Body centered
3. Face centered
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On a hot summer day the temperature is 35.0∘C, barometric pressure is 103kPa, and the relative humidity is 95.0%. An air conditioner draws in outside air, cools it to 18.0∘C, and delivers it at a rate of 11.500 L/h. Caiculate the rate of moisture condensation (kgh) and the volumetric flow rate of the air drawn from the outside.
Answers
The rate of moisture condensation is ≈ 3.66 kg/h and the volumetric flow rate of air drawn from the outside is ≈ 1069 m³/h.
Temperature, T1 = 35.0 ∘C
Barometric pressure, P1 = 103 kPa
Relative humidity, RH = 95.0%
Temperature after cooling, T2 = 18.0 ∘C
Volumetric flow rate of air, Q = 11.500 L/h
1. Determine saturation vapor pressure, psat at T2
From steam tables, we find psat at T2 = 1.72 kPa
2. Determine the partial pressure of water vapor, p2
p2 = RH × psat = (95/100) × 1.72 = 1.63 kPa
3. Determine the partial pressure of dry air, p1-p2
p1-p2 = P1/100 - p2 = (103/100) - 1.63 = 1.06 kPa = 1060 Pa
4. Calculate the volumetric flow rate of air, V1
V1 = Q × P1/(R × T1) = (11.5 × 10⁻³ m³/s) × (103 × 10³ Pa) / [(287 J/(kg K)) × (35 + 273) K] ≈ 0.297 m³/s ≈ 1069 m³/h
5. Calculate the mass flow rate of dry air, ṁd
ṁd = V1 × (p1-p2) / (R × T2) ≈ 7.84 kg/h
6. Calculate the mass flow rate of water vapor, ṁw
ṁw = ṁ - ṁd ≈ 3.66 kg/h
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in an ionization counter, radioactive emissions collide with gas particles, producing and electrons, which can be detected as an electric current. a scintillation counter detects radioactive emissions by their ability to excite atoms and cause them to emit , which in turn creates an electric current through the effect.
Answers
In an ionization counter, radioactive emissions collide with gas particles, producing ion pairs, which can be detected as an electric current.
The radiation ionizes the gas atoms or molecules, creating charged particles that are then collected as a current, allowing for the detection and measurement of radioactivity.
On the other hand, a scintillation counter detects radioactive emissions by its ability to excite atoms and cause them to emit photons (light). The radiation interacts with certain materials, such as scintillators, which absorb the energy and re-emit it as visible light. The emitted light is then converted into an electric current through the photoelectric effect or the use of photomultiplier tubes, enabling the detection and measurement of radioactivity based on the emitted light intensity.
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can someone help me with it
Answers
Answer:
false, it is theory of how the universe started
Answer:
it's answer is false you can write it
The Liquified Petroleum Gas (LPG) has the composition of 60% Propane (C 3
H 8
) and 40% Butane (C 4
H 10
) by volume: (a) Find the wet volumetric and gravimetric analysis of the products of combustion when the equivalence ratio (Φ)=1.0. (b) What is the stoichiometric air to fuel ratio for the LPG.
Answers
The balanced combustion reaction for propane can be represented as:
C₃H₈ + (5/2)O₂ → 3CO₂ + 4H₂O
And the balanced combustion reaction for butane can be represented as:
C₄H₁₀ + (6.5)O₂ → 4CO₂ + 5H₂O
Since LPG is composed of 60% propane and 40% butane by volume, we can calculate the wet volumetric and gravimetric analysis based on these proportions.
Wet volumetric analysis:
For the wet volumetric analysis, we consider the volume of the products of combustion relative to the volume of the LPG consumed.
Propane (C₃H₈):
The stoichiometric coefficient of propane in the combustion reaction is 3. Therefore, for every mole of propane burned, we will have 3 moles of CO₂ and 4 moles of H₂O formed.
Butane (C₄H₁₀):
The stoichiometric coefficient of butane in the combustion reaction is 4. Therefore, for every mole of butane burned, we will have 4 moles of CO₂ and 5 moles of H₂O formed.
Considering the initial composition of 60% propane and 40% butane by volume, we can calculate the volumetric composition of the products of combustion:
Volumetric composition of CO₂:
(0.6 * 3) + (0.4 * 4) = 3.6
Volumetric composition of H₂O:
(0.6 * 4) + (0.4 * 5) = 4.6
Therefore, the wet volumetric analysis of the products of combustion is 3.6 parts CO₂ to 4.6 parts H₂O.
Wet gravimetric analysis:
For the wet gravimetric analysis, we consider the mass of the products of combustion relative to the mass of the LPG consumed.
Using the molar masses of the compounds involved in the combustion reaction:
Molar mass of CO₂ = 44 g/mol
Molar mass of H₂O = 18 g/mol
Gravimetric composition of CO₂:
(0.6 * 3 * 44 g/mol) + (0.4 * 4 * 44 g/mol) = 158.4 g
Gravimetric composition of H₂O:
(0.6 * 4 * 18 g/mol) + (0.4 * 5 * 18 g/mol) = 74.4 g
Therefore, the wet gravimetric analysis of the products of combustion is 158.4 grams CO₂ to 74.4 grams H₂O.
(b) The stoichiometric air to fuel ratio for LPG can be determined based on the balanced combustion equations for propane and butane.
For propane (C₃H₈):
C₃H₈ + (5/2)O₂ → 3CO₂ + 4H₂O
The stoichiometric coefficient for propane is 1, which means we need 5/2 moles of O₂ for every mole of propane.
For butane (C₄H₁₀):
C₄H₁₀ + (6.5)O₂ → 4CO₂ + 5H₂O
acetanilide is soluble in warm water, but trans-cinnamic acid is not. suggest an explanantion for this looking at ratios of polar SA and total SA
Answers
Acetanilide has a higher ratio of polar surface area (SA) to total SA compared to trans-cinnamic acid, which allows it to form stronger interactions with water molecules and be more soluble.
Acetanilide and trans-cinnamic acid have different solubility behaviors in warm water due to their molecular structures and the relative ratios of their polar surface area (SA) to total SA.
Acetanilide contains an amide functional group (-CONH2), which contributes to its polar nature. The amide group has a partial positive charge on the carbon and a partial negative charge on the oxygen and nitrogen atoms. This polar group increases the ratio of polar SA to total SA in acetanilide, allowing it to form stronger hydrogen bonds and interact more favorably with water molecules, making it soluble in warm water. On the other hand, trans-cinnamic acid contains a carboxylic acid functional group (-COOH), which is also polar but to a lesser extent compared to the amide group. The lower polar SA to total SA ratio in trans-cinnamic acid results in weaker interactions with water molecules, leading to lower solubility in warm water.
Thus, the differences in the ratios of polar SA to total SA between acetanilide and trans-cinnamic acid explain their contrasting solubility behaviors in warm water.
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Someone help with this question
Answers
Answer:
the answer is D the dominant over powers the resecive traits
According to the cup wall diagrams, why does the double wall vacuum
sealed cup outperform the other two cups
Because the particles are moving so fast in a vacuum that
they are able to pass through the walls and transfer more
kinetic energy to the liquid in the cup.
B
The vacuum allows for the all of the particles to pack in tightly
therefore nothing can pass through.
There is little to no transfer of kinetic energy between the
walls of the cups because there are no particles in a vacuum.
And since there is little to no transfer of kinetic energy there
is little to no transfer of temperature. Therefore the liquid
inside stays warmer/colder longer.
The particles in a vacuum do not move at all. Therefore there
is no kinetic energy and nothing can be transferred.
Answers
Answer:
i do not now
Explanation:
1. Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. 2. Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?
Answers
Answer: Yea yea please please
Explanation:
No more I don’t have any
Answer:
Sodium Hydride=NaH which has 1 sodium atom, and 1 hydrogen atom, i know this because there are no added numbers meaning theres one of each element.
yes you can form different compounds with the same elements. An example of separate compounds with the same elements are CO & CO2, CO has 1 carbon atom with one oxygen atom and is a flammable gas vs CO2 has 1 carbon atom and 2 oxygen atoms and is a non flammable. Therefore we knowCO & CO2 are two different compounds with the same elements.
Even though there is a limited # of elements there are a plethora of compounds due to being able to combine the same elements with different atom ratios.
Explanation:
for the reaction below, label each reactant as an electron pair acceptor or electron pair donor and as a lewis acid or a lewis base. alcl3 cl- → alcl4 -
Answers
AlCl3 is an electron pair acceptor and a Lewis acid, while Cl- is an electron pair donor and a Lewis base in this reaction.
In the reaction AlCl3 + Cl- → AlCl4-, we can label each reactant as follows:
1. AlCl3 is an electron pair acceptor and a Lewis acid. It accepts an electron pair from Cl- to form the AlCl4- ion.
2. Cl- is an electron pair donor and a Lewis base. It donates an electron pair to AlCl3, forming the AlCl4- ion.
A coordinate covalent bond is created when a Lewis acid and a Lewis base react. A covalent link that involves the exchange of an electron pair between two reactants is known as a coordinate covalent bond. In this instance, the Lewis base gives the Lewis acid its electrons. They indeed react in this manner, and the end result is what is known as an addition compound, or more often, an adduct.
An electrophile that accepts an electron pair, or Lewis acid, will have empty orbitals.
Species that contribute an electron pair (i.e., a nucleophile) and have lone-pair electrons are known as Lewis bases.
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if the molecular mass of a carbon atom is 12, the mass of a hydrogen atom is 1, and the mass of an oxygen atom is 16 daltons, how many molecules does one mole of table sugar (sucrose; c12h22o11) contain
Answers
The molecular mass of table sugar (Sucrose, C12H22O11) is 342 g/mol (grams/mole).
To find out how many molecules are in one mole of table sugar, you can use
Avogadro's number- is 6.022 x 1023 molecules/mol.
Using the molecular formula of table sugar, C12H22O11,
you can calculate its molecular mass as follows:
12 carbon atoms x 12 daltons each = 144 daltons
22 hydrogen atoms x 1 dalton each = 22 daltons
11 oxygen atoms x 16 daltons each = 176 daltons
Total = 342 daltons/mol
Calculate the number of molecules in one mole of table sugar as follows:
One mole of table sugar (342 g) contains 6.022 x 1023 molecules.
Therefore, one gram of table sugar contains -
6.022 x 1023 molecules/342 g = 1.76 x 1021 molecules
So, one mole of table sugar (Sucrose, C12H22O11) contains 6.022 x 1023 molecules.
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differentiate between true and metastable equilibrium
Answers
Answer:
True equilibriums are stable and they are always what it says it is in the scientific data and or experiments after the proof.
Metastable equilibriums are somewhat stable, but they tend to change their course at times. They will go up and down without ever really settling in one place very long. They vary.
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Explanation:
Which of the following factors affect the magnitude of the lattice energy for an ionic compound? Select all that apply.
a. The charges of the ions
b. The arrangement of the ions in the crystal
c. The size of the ions
Answers
The charges and size of the ions affect the magnitude of the lattice energy for an ionic compound. Therefore, option (a) and (c) is correct.
What is the lattice energy?Lattice energy can be described as the heat of formation when 1 mole of a crystalline ionic compound is produced from its constituent ions in their gaseous state.
For example, the lattice energy of a NaCl compound is the energy change of reaction when Na⁺ ions and Cl⁻ ions react to generate a NaCl crystal, which is -786 kJ/mol.
At constant pressure, the relation between lattice energy and lattice enthalpy is given by:
ΔU (lattice) = ΔH (lattice)- PΔV
Lattice energy for an ionic compound is directly proportional to the charge on ions and inversely proportional to the interionic distance between ions or the size of the ions.
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what type of severe weather occurs when there is a large amount of rainfall and runoff in a specific area?
Answers
Flash flood occurs when there is a large amount of rainfall and runoff in a specific area.
What is a flash flood?A flash flood can be described as rapid flooding of low-lying areas: washes, rivers, dry lakes, and depressions. This type of flood may be caused by heavy rain with a severe thunderstorm, hurricane, or tropical storm, or snowfields.
Flash floods also occur after the collapse of a natural ice or a human structure such as a man-made dam. Flash floods are differentiated from normal floods by having a timescale of less than six hours between rainfall and the onset of flooding.
If there is a large volume of surface runoff over a short period of time for a specific area can cause a flash flood.
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ketoses such as fructose are expected to give a positive tollens test because:
Answers
Ketoses such as fructose are expected to give a positive Tollens test because of their ability to reduce Tollens' reagent.
What is the Tollens Test?The Tollens test is a chemical reaction used to test for the presence of aldehydes. The test is named after the German chemist Bernhard Tollens. The Tollens reagent is a solution of ammoniacal silver nitrate, Ag(NH3)2NO3. The test is based on the fact that aldehydes are readily oxidized to carboxylic acids by a solution of silver nitrate in ammonia.
This reaction is exothermic and produces a silver mirror on the inside of the test tube.The test solution is prepared by adding a few drops of a solution of Tollens' reagent to the substance being tested. The test solution is then heated in a water bath for a few minutes.
If the substance being tested is an aldehyde, it will reduce the silver ions in the Tollens' reagent to metallic silver. The metallic silver will form a mirror on the inside of the test tube. If the substance being tested is not an aldehyde, no mirror will form.The aldehydes are more easily oxidized than the ketoses.
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Lithium is a metal.
Describe three differences between the
physical properties of lithium and oxygen.
Answers
Answer:
Explanation:
lithium: lithium is very soft, silvery metal. melting point is 180.54°C and boiling point is 1,335°C. it's density is 0.534 grams per cu.cm. oxygen: oxygen is colourless , odorless , tasteless gas
pls say the 5 methods of preventing rusting of iron
Answers
Explanation:
Corrosion of iron is called as rusting. Rusting is oxidation of iron in the presence of oxygen and water and leads to formation of hydrated ferric oxide.
Methods to prevent rusting are :
1. Application of paint: It prevents the direct exposure of metal to atmosphere.
2. Application of oils or grease: It creates a barrier between the metal and atmosphere.
3. Galvanization : It is coating of iron with more active metal zinc so that zinc gets oxidized and protects iron.
4. Cathodic protection : It involves connecting iron to a more active metal which loses electrons on behalf of iron and thus protects iron by rendering it as cathode.
5. Coating with wax tapes: It prevents the direct exposure of metal to atmosphere.
What is Avogadro’s number?
A. the number of atoms in exactly 14.00 g of carbon-12
B. the number of atoms in a kilogram of any substance
C. the number of atoms, molecules, ions, formula units, or other particles in a mole of a substance
D. the number of atoms, molecules, ions, formula units, or other particles in a gram of a substance
Answers
Answer:
C
Explanation:
The activation energy Ea of a reaction is Ea = 43.5Kj.mol. Estimate the variation in the rate k of the reaction when the temperature is raised from 300K to 310K.(R = 8.314 J.K.mol)
Answers
Answer
The variation in the rate k (k1/k2) is 0.5707 s^-1
Step-by-step explanation:
Given the following parameters
Activation energy = 43.5Kj.mol
T1 = 300K
T2 = 310K
R = 8.314 J.Kmol
\(K\text{ =A}e^{-\frac{Ea}{RT}}^{}^{}\)\(\begin{gathered} \text{where K = rate constant},\text{ Ea = Activation energy, R= gas constant and T = temperature} \\ \ln (k)\text{ = }\ln A\text{ - }\frac{Ea}{RT} \\ \text{ A is a constant} \\ \text{ if the reaction occurs at two temperature T1 and T2} \\ \ln k1\text{ = }\ln A\text{ - }\frac{Ea}{RT1}--------\text{ equation 1} \\ \ln k2\text{ = }\ln A\text{ - }\frac{Ea}{RT2}\text{ --------- EQUATION 2} \\ \text{ substracting equation 1 from 2},\text{ we have} \\ \ln (\frac{k1}{k2})\text{ = }-\frac{Ea}{RT1}\text{ + }\frac{Ea}{RT2} \\ \ln (\frac{k1}{k2})\text{ = }\frac{Ea}{R}(\frac{1}{T2}\text{ - }\frac{1}{T1}) \\ \\ \ln (\frac{k1}{k2})\text{ = }\frac{43500}{8.314}(\frac{1}{310}\text{ - }\frac{1}{300}) \\ \ln (\frac{k1}{k2})\text{ = 5232.139 }(0.00322\text{ - 0.003333)} \\ \ln (\frac{k1}{k2})\text{ = 5232.139 (}-\text{ 0.0001071)} \\ \ln (\frac{k1}{k2})\text{ = -0.560851} \\ \text{Take the exponential of both sides} \\ \frac{k1}{k2}\text{ = }e^{-0.560851} \\ \frac{k1}{k2\text{ }}=0.5707s^{-1} \end{gathered}\)An atom has the following isotopes in the the following abundances. 20 10Z 30% , 19 10Z10% , 18 10Z 60% What is the average atomic mass
Answers
The average atomic mass of the atom that has the following isotopes in the following abundances: 20 10Z 30% , 19 10Z10% , 18 10Z 60% is 18.7.
How to calculate average atomic mass?The average atomic mass of an isotopic element is the weighted average of the atomic masses of the naturally occurring isotopes of an element.
According to this question, the atom has the following isotopes in the following abundances: 20 10Z [30%] = 30/100 × 20 = 6
19 10Z [10%] = 10/100 × 19 = 1.9
18 10Z [60%] = 60/100 × 18 = 10.8
The sum of these masses is the average atomic mass and is calculated as follows:
6 + 1.9 + 10.8 = 18.7
Therefore, the average atomic mass of the atom that has the following isotopes in the following abundances: 20 10Z 30% , 19 10Z10% , 18 10Z 60% is 18.7.
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How many grams of silver are in 187g of Ag2S
Answers
There are approximately 144.88 grams of silver in 187 grams of Ag2S.To determine the amount of silver (Ag) present in 187g of Ag2S, we need to consider the molar mass and stoichiometry of the compound.
The molar mass of Ag2S can be calculated as follows:
Ag: 1 atom x 107.87 g/mol = 107.87 g/mol
S: 1 atom x 32.07 g/mol = 32.07 g/mol
Total: 107.87 g/mol + 32.07 g/mol = 139.94 g/mol
The molar mass of Ag2S is 139.94 g/mol, indicating that 1 mole of Ag2S weighs 139.94 grams.
To determine the amount of Ag in 187g of Ag2S, we can set up a proportion:
(187 g Ag2S) / (139.94 g Ag2S) = (x g Ag) / (107.87 g Ag)
Solving this proportion, we find:
x g Ag = (187 g Ag2S) * (107.87 g Ag) / (139.94 g Ag2S) = 144.88 g Ag
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Propose an efficient synthesis for the following compound (0.4 points) 2-methylpentan-3-one
Answers
To synthesize 2-methylpentan-3-one efficiently, following process has to be followed:
Start with the synthesis of 2-methylpentan-3-ol, which can be prepared via a Grignard reaction. Firstly, prepare 2-methylpentan-3-ol by reacting ethyl magnesium bromide with 3-methylbutanal.
Afterward, hydrolysis of this Grignard reagent using HCl or dilute sulfuric acid provides the alcohol.2-methylpentan-3-ol.
( Grignard reaction -The Grignard reaction is an organometallic chemical reaction in which carbon alkyl, allyl, vinyl, or aryl magnesium halides (Grignard reagent) are added to the carbonyl groups of either an aldehyde or ketone. This reaction is important for the formation of carbon–carbon bonds.)
Now,the oxidation of 2-methylpentan-3-ol is carried out using oxidizing agents like PCC (pyridinium chlorochromate), PDC (pyridinium dichromate), or Jones reagent to synthesize 2-methylpentan-3-one.Oxidation of 2-methylpentan-3-ol to synthesize 2-methylpentan-3-one can be represented as follows: PCC or PDC or Jones Reagent2-methylpentan-3-one.
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How much heat must be added to a 12.75 g sample of gold to increase its temperature
from 32.5°C to 85.5°C? The specific heat of gold is 0.13 J/gºC.
Report your answer with the proper number of SF with a space between your numeral
answer and units.
Answers
Answer: This is a link to all of the awsers
https://pshs.psd202.org/documents/ssafe/1552416190.pdf
Explanation: