Calculate the amount, in moles, of Cu2+ present at equilibrium when excess Cu3(PO4)2(s) is added to 25.0 mL 0.65 M K3PO4(aq). Assume no change in volume. For Cu3(PO4)2, Ksp = 1.40×10-37.
Answers
Reaction quotient can be written as follows:Qsp = x3(0.65)2/(0.65)6We can now equate Qsp and Ksp to solve for x.1.40×10-37 = x3(0.65)2/(0.65)6x = 6.04×10-37 M (rounded off to 3 significant figures)Therefore, the amount of Cu2+ present at equilibrium is 6.04×10-37 moles
The equilibrium constant for the reaction below is the product of the concentration of the ions raised to the power of their stoichiometric coefficient.Cu3(PO4)2(s) + 6 K+(aq) ↔ 3 Cu2+(aq) + 2 PO43–(aq)This means that:Ksp = [Cu2+]3[PO43–]2/K+[K+]6For this reaction, Ksp is 1.40×10-37. When the reaction reaches equilibrium, [K+] and [PO43–] are still equal to their initial concentrations, which is 0.65 M. Let's use x to represent the concentration of [Cu2+] at equilibrium.
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Related Questions
8. Chlorine has a total of 17 electrons. How many
valence electrons are shown on the electron dot
diagram for chlorine?
O a. 17
Ob. 8
O c.7
Od. 1
Answers
Answer:7
Explanation:
The first shell of electrons is 2, seen in Helium, the second shell increases to 8, 17-(2+8)=7
Can someone help me please
Answers
Answer:
Strange question. All the answers are D
Explanation:
I don't exactly know how you should answer this. I can find the charge on Chromium. The only hope is that they are all the same.
[Cr(OH)_-6]^-3
x - 6 = -3 Add 6
x = -3 + 6
x = 3
======
CrO4 ^-2
x - 4*2 = - 2 add 8
x = -2 + 8
x = 6
================
Water has no effect on the charge. The chromium has a charge of +2
Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answers
Answer:
chemical weathering
Explanation:
Chemical weathering is the process responsible for changing the composition of rocks.
WHAT IS WEATHERING?Weathering is the process by which rocks are broken down into smaller or tiny pieces.
There are different types of weathering namely;
Chemical weatheringMechanical weatheringChemical weathering is the type of weathering that changes the chemical composition of rocks.
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william aston created the mass spectrograph to analyze and separated them, found 218 and found mass and percent abundance of each
Answers
The given statement " William Aston created the mass spectrograph to analyze and separated them, found 218 and found mass and percent abundance of each atoms" is false.
The mass spectrograph was not invented by William Aston. It was actually invented by J.J. Thomson in the early 20th century.
J.J. Thomson's work with the mass spectrograph led to the discovery of isotopes, which are different forms of an element with the same number of protons but different numbers of neutrons. Isotopes have different masses, and the mass spectrograph allowed scientists to separate and analyze them based on their mass-to-charge ratio.
The process of using a mass spectrograph to determine the mass and percent abundance of isotopes is known as mass spectrometry. It involves ionizing a sample, separating the ions based on their mass-to-charge ratio, and detecting the ions to determine their abundance.
The completed question is given as,
State true or false
William Aston created the mass spectrograph to analyze and separated them, found 218 and found mass and percent abundance of each atoms.
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How many grams does 4.3 x 10^24 molecules of H2O weigh?
Answers
To get the mass for these molecules, we will need to do three steps:
1 - convert from number of molecules to number of moles.
2 - calculate the molar mass for H₂O.
3 - use it to convert from number of moles to mass.
To convert from number of molecules to number of moles, we need to divide the number of molecules by the Avogadro's number:
\(\begin{gathered} N_A\approx6.02\times10^{23}mol^{-1} \\ n_{H_2O}=\frac{N_{H_2O}}{N_A}=\frac{4.3\times10^{24}}{6.02\times10^{23}mol^{-1}}=0.71428\ldots\times10^1mol=7.1428\ldots mol \end{gathered}\)Now, to calculate the molar mass of H₂O, we need the molar masses of H and O, which we can get on a periodic table:
\(\begin{gathered} M_H=1.00794g\/mol \\ M_O=15.9994g\/mol \\ M_{H_2O}=2\cdot M_H+1\cdot M_O \\ M_{H_2O}=(2\cdot1.00794+1\cdot15.9994)g\/mol \\ M_{H_2O}=(2.01588+1\cdot15.9994)g\/mol \\ M_{H_2O}=18.01528g\/mol \end{gathered}\)Using it, we can convert the number of moles to mass:
\(\begin{gathered} M_{H_{2}O}=\frac{m_{H_2O}}{n_{H_{2}O}} \\ m_{H_2O}=n_{H_2O}\cdot M_{H_{2}O} \\ m_{H_2O}=7.1428\ldots mol\cdot18.01528g\/mol \\ m_{H_2O}=128.680\ldots g \end{gathered}\)Now, the proper way of approximating this value is to maintain the same number of significant figures as the number of molecules, because we used multiplications and divisions. It has two significant figure, so we need to approximate accourdingly:
\(m_{H_{2}O}\approx130g\)So, there is 128.680... grams or, approximately, 130 grams of water.
How many moles of ammonium nitrate would be required to have 3. 55 moles of oxygen?
Answers
The number of moles of ammonium nitrate required to have 3. 55 moles of oxygen is 7.1 moles.
Balanced chemical equationTo determine the number of moles of ammonium nitrate required to have 3.55 moles of oxygen, we need to use the balanced chemical equation for the reaction. The balanced chemical equation for the decomposition of ammonium nitrate is:
2 NH₄NO₃ → 2 N₂ + 4 H₂O + O₂
From the balanced chemical equation, we can see that 2 moles of ammonium nitrate produces 1 mole of oxygen. Therefore, to produce 3.55 moles of oxygen, we need:
3.55 moles O₂ × (2 moles NH₄NO₃ / 1 mole O₂) = 7.1 moles NH₄NO₃
Therefore, 7.1 moles of ammonium nitrate are required to produce 3.55 moles of oxygen.
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why compound be broken down into simpler substances
Answers
A compound can be broken down into simpler substances because it is made up of two or more different elements that are chemically combined together. When a compound is broken down, it results in the formation of new substances that have different properties than the original compound.
Compounds are formed through a chemical reaction between different elements, and the resulting substance is held together by chemical bonds. These bonds can be broken through various processes such as heating, electrolysis, or chemical reactions. Once the bonds are broken, the individual elements that make up the compound are released and can be isolated.
The ability to break down compounds into simpler substances is an important aspect of chemistry, as it allows scientists to study the properties and behavior of individual elements. It also plays a crucial role in industries such as pharmaceuticals and agriculture, where compounds are broken down to extract useful substances. Understanding the composition and behavior of compounds is fundamental to advancing our knowledge of the natural world and improving our quality of life.
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The complete question is-
Are the properties of two proteins with the same type and number of amino acids but a different order of linkage the same?
Determine the formula for iron l oxide
Answers
What is the random movement and mixing of particles?
9 letters in the world the second one is “i” and the 6th “s”
Answers
Answer:
diffusion
Explanation:
Diffusion can be defined as the net movement of particles from a high concentration to a low concentration. This sounds like the most plausible word in this case.
Water is dipolar because:
A. It has two hydrogens, each of which pulls oxygen's electrons and separates the
charges into two areas.
B. Oxygen pulls electrons closer to itself than hydrogens, giving the oxygen a
slight negative and hydrogens a slight positive charge.
C. Oxygen pulls electrons closer to itself than hydrogens, giving the oxygen a
slight positive and hydrogens a slight negative charge.
OD. It has two hydrogens, each of which has its own polar area.
Answers
Answer:
B. Oxygen pulls electrons closer to itself than hydrogens, giving the oxygen a slight negative and hydrogens a slight positive charge.
Explanation:
In the water molecule (H2O), an oxygen atom is bonded to two hydrogen atoms. Oxygen atom is much more electronegative (has more attraction for electrons) than hydrogen atom, hence, it pulls electrons from one one of the hydrogen atoms bonded to it making it more negatively charged and the hydrogen atom, more positively charged.
The possession of positive charge (+) and negative charge (-) in the same molecule, caused by uneven flow of electrons is what it means to be DIPOLAR (from dipole). Hence, water is DIPOLAR because oxygen pulls electrons closer to itself than hydrogens, giving the oxygen a slight negative and hydrogens a slight positive charge.
Atoms: SC.8.P.8.7
Match the definition to proper definition:
Term:
Definition:
1. Atoms
A.Positive subatomic particles found in the
nucleus of the atom
2. Neutron
B. Negative subatomic particle found in the cloud
3. Proton
C. Substance that has no electrical charge
4. Nucleus
D. Basic building block of all matter
5. Electron cloud
E. Substance that consists of only one type of ato,
6. Electrons
F. Center of an atom with a positive charge
G. Outside of the atom with a negative charge
7. Element
Answers
Answer:
1 = D
2 = C
3 = A
4 = F
5 = G
6 = B
7 = E
Equal but opposite forces acting on an object results in what?
Answers
Answer:
Action given and reaction taken
Also known as
Newton's third law of motion
Explanation:
An action will be done such as bouncing a ball on the wall
- You throw the ball (Action)
- The ball bounces back (Reaction)
Hope this Helps
a valid lewis structure of ________ cannot be drawn without having an expanded octet on the central atom. group of answer choices a. ni3 b. icl5 c. co2 d. so2 e. sif4
Answers
The correct answer is (b) ICl5. This is because iodine (I) is a halogen and can have a maximum of seven valence electrons. When combined with five chlorine (Cl) atoms, the total number of valence electrons is 42 (7 + 5x7).
To create a valid Lewis structure, all atoms must have a complete octet of electrons, which would require 40 electrons (8x6) for the six atoms in the molecule. This leaves only two electrons remaining, which cannot be placed on the central iodine atom without violating the octet rule. Therefore, an expanded octet on the central atom is required to create a valid Lewis structure of ICl5.
On the other hand, the other options can all have valid Lewis structures without violating the octet rule. Ni3 and SiF4 have complete octets on all atoms, CO2 has double bonds which complete the octet of each oxygen atom and SO2 has a lone pair on the sulfur atom that completes its octet.
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Paper clips are made of stainless steel. Steel is a mixture. There are different kinds of steel that have slightly different ratios of substances. Stainless steel is made of iron mixed with high-density metals. Carbon steel is made of iron mixed with carbon, an element with a lower density than metals. Would you expect the density of stainless steel and carbon steel to be the same? Why or why not? Font Sizes
Answers
No, firstly bc stainless steel and carbon steel mixed with different things, high-density metals and carbon.
High-density metals and carbon both has different density which will affect the steel when they combined with iron. So it cant be the same.
name the element in the second period of the periodic table with two 2p electrons.
Answers
The element in the second period of the periodic table with two 2p electrons is beryllium (Be).
How do I remember electron configurations?
In order to remember electron configurations, consider the following tips:
i. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6
ii. When writing the configuration, start with the nearest noble gas and proceed onward. This is known as the core notation.
iii. Use the periodic table to determine the outermost electrons' positions.
The row number equals the highest principal quantum number, n, in the configuration, while the group number equals the highest value of the magnetic quantum number, l, in the valence subshell.
iv. The highest number of electrons that can fit into a subshell is given by 2 (2l + 1).
Pauli's exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers. As a result, if two electrons share a subshell, they must have different spin quantum numbers.
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i got more for everyone
Answers
Answer:
d is the answer o(kkkkkkkkkkkkkkk
Glycoproteins are proteins to which carbohydrates have been covalently attached. The amino acid R groups that serve as sites for O-linkages in glycoproteins include (Select all that apply)
1. positively charged amino acid R groups
2. cysteine
3. hydroxyl-containing R groups
4. negatively charged amino acid R groups
Answers
Glycoproteins are the proteins to which carbohydrates have been covalently attached. The amino acid R groups that serve as sites for O-linkages in glycoproteins are hydroxyl-containing R groups, positively charged amino acid R groups, and negatively charged amino acid R groups.
However, cysteine doesn't have any O-linkage sites.Glycoproteins are glycoconjugates that have carbohydrate chains covalently bonded to their protein chains. These carbohydrates are joined to proteins via a covalent bond between the carbohydrate and the protein, producing glycoproteins. Glycoproteins play various functions in the body, including signaling, metabolism, and immunity.
Amino acids with hydroxyl-containing R groups, positively charged amino acid R groups, and negatively charged amino acid R groups serve as sites for O-linkages in glycoproteins. Cysteine doesn't have any O-linkage sites and thus cannot participate in the covalent attachment of carbohydrates to the protein. Therefore, options 1, 3, and 4 are the correct choices because they are the amino acid R groups that serve as sites for O-linkages in glycoproteins
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design a synthesis of 4,4-dimethyl-2-cyclohexenone from any acyclic compounds.
Answers
Start with 4-methylpent-3-en-2-one, perform a Michael addition, perform an elimination reaction, and finally Carry out an intramolecular aldol condensation. Here's a step-by-step explanation:
1. Begin with an acyclic compound, such as 4-methylpent-3-en-2-one. This compound contains a ketone group and an alkene group in its structure.
2. Perform a Michael addition using a methyl Grignard reagent (CH₃MgBr) to add a methyl group to the 4-methylpent-3-en-2-one. This will result in a tertiary alcohol and a new carbon-carbon bond.
3. Next, perform an elimination reaction (dehydration) using a strong acid, such as sulfuric acid (H₂SO₄), to remove a molecule of water from the tertiary alcohol. This will produce an α, β-unsaturated ketone called 4,4-dimethyl-3-penten-2-one.
4. Finally, carry out an intramolecular aldol condensation reaction with a strong base, such as sodium hydroxide (NaOH), to form a new carbon-carbon bond and create the cyclic structure of 4,4-dimethyl-2-cyclohexenone.
To summarize, the synthesis of 4,4-dimethyl-2-cyclohexenone from acyclic compounds involves the following steps:
1. Start with 4-methylpent-3-en-2-one.
2. Perform a Michael addition with a methyl Grignard reagent.
3. Perform an elimination reaction with sulfuric acid.
4. Carry out an intramolecular aldol condensation with sodium hydroxide.
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What is the name of the family highlighted of
the periodic table above? How many valence
electrons does it have?
Answers
One difference between mixtures and pure substances is that
A)
mixtures can be physically separated.
B)
mixtures are made of one type of atom.
pure substances have no chemical bonds
D)
pure substances can be physically separated,
ning
Answers
Answer:
I think b but I could be wrong
Answer:
a
Explanation:
i just took it
The atmosphere and hydrosphere interact in which type of severe weather?
Answers
Answer:
The atmosphere and hydrosphere interact in water-related weather, this includes snowstorms, hurricanes, rainfall, and monsoons.
The question is incomplete, the complete question is;
The atmosphere and hydrosphere interact in which type of severe weather?
A. Hurricanes
B. Drought
C. Sinkholes
D. Wildfires
The atmosphere and hydrosphere interact in the severe weather called hurricanes.
A hurricane is defined as a cyclonic storm which forms over warm tropical waters and moves at about 74 miles per hour.
When hurricanes mostly move over dry water and causes large scale destruction of property. As hurricanes move, they create tornadoes.
Hurricanes are formed when moist air rises over water. A convection current is set up as the moist air is replaced by cooler air.
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Who would be considered an intrapreneur? when they res working in labs. orgarizations, such as sperti foamt. working with members of the Arat Amefican commurity.
Answers
An intrapreneur is an individual who exhibits entrepreneurial qualities and behaviors within an established organization.
They are often innovative, creative, and take initiative to develop and implement new ideas, products, or processes within the company. In the context you provided, someone working in labs or organizations, such as Sperti Foamt, and collaborating with members of the Arab American community can be considered an intrapreneur if they are actively seeking opportunities to drive positive change, bring about innovation, and create value within their organization. The practise of acting like an entrepreneur while employed by a huge corporation is known as intrapreneurship. Intrapreneurship is defined as the use of a corporate management style that combines risk-taking and innovative approaches, as well as the rewards and motivating strategies that are more typically associated with entrepreneurship.
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Aluminum metal can be recycled from scrap metal by melting the metal to evaporate impurities. a. Calculate the amount of heat needed to purify 1.00 mole of Al originally at 298 K by melting it. The melting point of Al is 933 K. The molar heat capacity of Al is 24 J/(mol K), and the heat of fusion of Al is 10.7 kJ/mol.
Answers
The amount of heat required to purify the Al is 25.94 * 10^3 J
What is heat capacity?The term heat capacity refers to the amount of heat required to raise the temperature of a substance by 1K. The aluminum was heated from 298 K to 933 K then it melted.
The total heat required is;
H = ncdT + nL
H = (1 * 24 * (933 - 298)) + (1 * 10.7 * 10^3)
H = 15.24 * 10^3 J + 10.7 * 10^3 J
H = 25.94 * 10^3 J
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A gaseous mixture of O2 and N2 contains 38.6 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 0.803 atm
Answers
The partial pressure of oxygen in the given gaseous mixture can be calculated by using Dalton's law of partial pressures. According to Dalton's law of partial pressures, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the individual gases present in the mixture.
Mathematically, P total = P1 + P2 + P3 +...where P total is the total pressure, P1, P2, P3,..are the partial pressures of individual gases in the mixture. The formula for calculating partial pressure of a gas is:P gas = (Xgas)(Ptotal)where X gas is the mole fraction of the gas and P total is the total pressure of the mixture.
Given: The gaseous mixture contains 38.6 % nitrogen by mass. Therefore, the mass fraction of oxygen in the mixture can be calculated as follows:
Mass fraction of nitrogen = 38.6 %
Mass fraction of oxygen = 100 % - 38.6 % = 61.4 %
Therefore, the mole fraction of oxygen (XO2) in the mixture can be calculated as:
Mole fraction of oxygen = (mass fraction of oxygen)/(molar mass of oxygen/molar mass of air)
= (0.614)/(32/28.8) = 0.691
The mole fraction of nitrogen (XN2) in the mixture can be calculated as:
Mole fraction of nitrogen = 1 - XO2 = 1 - 0.691 = 0.309
Now, the partial pressure of oxygen (PO2) can be calculated using the formula:
Pgas = (Xgas)(Ptotal)PO2 = (0.691)(0.803 atm) = 0.555 atm
Therefore, the partial pressure of oxygen in the mixture is 0.555 atm.
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convert 45.8g of CO2 to mol
Answers
Answer:
45.8 CO2 = 1.0406843976868674mol
Explanation:
How many grams CO2 in 1 mol? The answer is 44.0095. We assume you are converting between grams CO2 and mole. You can view more details on each measurement unit: molecular weight of CO2 or mol This compound is also known as Carbon Dioxide.
Credit;
Convert grams CO2 to moles - Conversion of Measurement ...
how much heat is required to increase the temperature of 10.0 grams of water 6.0oc? (the specific heat of water is 4.18 j/g oc) a. 250 j b. 42 j c. 24 j d. 20 j
Answers
Heat is required to increase the temperature of 10.0 grams of water is 250 J.
To calculate the heat required to increase the temperature of a substance, we can use the formula:
Q = m x c x ΔT
where:
Q is the heat energy
m is the mass of the substance
c is the specific heat capacity of the substance
ΔT is the change in temperature
In this case, we have:
m = 10.0 grams (mass of water)
c = 4.18 J/g°C (specific heat of water)
ΔT = 6.0°C (change in temperature)
Substituting these values into the formula, we get:
Q = 10.0 g x 4.18 J/g°C x 6.0°C
Q = 250.8 J
Therefore, the heat required to increase the temperature of 10.0 grams of water by 6.0°C is approximately 250.8 J.
The closest answer choice is (a) 250 J.
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world production of ammonia is now about 30 times greater than it was in 1950 suggest why the demand for ammonia is increased
Answers
There are a few reasons why the demand for ammonia has increased over time:
Population growth: The world's population has grown significantly over the past 70 years, and as the population has grown, so has the demand for food. Ammonia is a key ingredient in the production of fertilizers, which are used to help grow crops and increase food production. As the population has increased, so has the demand for fertilizers, which has contributed to the increase in the production of ammonia.Industrialization: As more countries have industrialized and developed, there has been an increased demand for ammonia to use as a feedstock in the production of chemicals, plastics, and other industrial products.Energy production: Ammonia can be used as a source of renewable energy, and there has been an increased demand for clean energy sources in recent years. This has led to an increase in the production of ammonia for use in energy production.Environmental concerns: Ammonia can be used to reduce greenhouse gas emissions, and there has been an increased focus on finding ways to reduce environmental impact. This has led to an increase in the production of ammonia for use in environmental applications.Hope This Helps You!
How many senses does the human body have?
O A. 3
B. 5
Answers
Answer:
B
Explanation:
sight, hearing, smell, taste and touch
Answer:
Most easiest answer..
There are 5 senses in human body.☺️
concentrations of nitrate above 45 ppm are considered hazardous to infants. this is because they interfere with the ability of the blood to carry oxygen. if you drink 6.0 fluid ounces of water that contains 45 ppm of nitrate, what mass of nitrate ions are you consuming?
Answers
Mass of nitrate ions is 7983.90 μg/ml
What is concentration of ion?The concentration of ions in a solution depends on the molar ratio of solutes, cations and anions formed in the solution. Therefore, if we have a compound that dissociates into a cation and an anion, the minimum concentration of each of these two products is the same as that of the original compound.
So, the mole ratio between the original compound and an ion that it forms will determine the concentration of the respective ion in solution.
Amount of solute = concentration × amount of solution
= 45 ppm × 6.0 fluid ounces of water × \(\frac{29.57 ml}{1 fluid ounce}\)
= 45 μg/ml × 6.0 fluid ounces of water × \(\frac{29.57 ml}{1 fluid ounce}\)
= 7983.90 μg/ml
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metal oxides dissolved in water show a ph in what range? in contrast to these metal oxides, do nonmetal oxides produce the same ph range?
Answers
Metal oxides dissolved in water show a pH in 7.1 to 14 range and nonmetal oxides produce a pH range from 1 to 6.9.
Metal oxides are basic in nature whereas non-metal oxides are acidic in nature. Oxides are formed when a metal or a non-metal element reacts with oxygen.
As we know, in a pH scale, the acids show a range from 1 to 6.9 and bases show a range from 7.1 to 14. 7 is for neutral atoms or molecules.
Hence, according to the pH scale, as metal oxides are basic, they will range in between 7.1 to 14. As non-metal oxides are acidic they will range from a pH from 1 to 6.9.
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