The oxidation of co (carbon monoxide) to less-harmful co₂ (carbon dioxide) and the oxidation of hc (unburned hydrocarbons) to co₂ (carbon dioxide) and h₂o (water).
What is meant by an oxidation reaction?Oxidation is that the loss of electrons during a reaction by a molecule, atom or ion. Oxidation occurs when the oxidation number of a molecule, atom or ion is increased. the other process is called reduction, which occurs when there's a gain of electrons or the oxidation state of an atom, molecule, or ion decreases.
Why is it called an oxidation reaction?
The term oxidation was first employed by Antoine Lavoisier to signify the reaction of a substance with oxygen. Much later, it had been realized that the substance, upon being oxidized, loses electrons, and therefore the meaning was extended to include other reactions in which electrons are lost, no matter whether oxygen was involved.
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Why are nuclear processes significant?
A) They are the only process that can break down protons.
B) They are the only process that can break down electrons.
C) They are the only process that can break down elements.
D) They are the only process that can break down compounds.
The statement that describes how nuclear processes are significant is that they are the only process that can break down elements (option C).
What is nuclear process?Nuclear processes involves two notable types of nuclear reactions, which are;
Nuclear fission reactionsNuclear fusion reactions.Nuclear fission is a nuclear reaction in which a large nucleus splits into smaller ones with the simultaneous release of energy.
On the other hand, nuclear fusion is the combination of the nuclei of small atoms to form the nuclei of larger ones, with a resulting release of large quantities of energy.
Therefore, it can be said that the statement that describes how nuclear processes are significant is that they are the only process that can break down elements.
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3. What is the SI unit for volume?
Answer:
m³ (cubic metres)
Explanation:
m³ is the SI unit for measuring volume.
Answer:
The SI unit is m³ (cubic meters)
Explanation:
A+sample+of+a+radioactive+substance+decayed+to+95%+of+its+original+amount+after+a+year. what+is+the+half-life+of+the+substance?
Half life of the substance will be 0.152a
One of the main terms used in physics to describe the radioactive decay of a specific sample or element over a predetermined amount of time is half-life, also known as half-life period.the atoms whose mean life exceeds their half-life. This would imply that the mean life would be equal to the half-life divided by 2, which is the natural algorithm. On the other side, probability is frequently used to define the half-life.Half life formula:
Nₜ= Noe⁽⁻λᵗ⁾
Nₜ= substance leftover
No = initial concentration
λ = decay constant
Nₜ= 95
No = 100
t = 1
So, putting values in the above equation
95 = 100e⁽⁻λ⁾ .1
e^-λ = 95/100
ln e⁽⁻λ⁾ = ln(95/100)
find out the value of lambda
λ = ln( 0.95) = 4.55/a
t₍ₕₐₗf₎ = 0.693/ λ
Put the value of lamba in this equation
t₍ₕₐₗf₎ = 0.693 / 4.55
= 0.152a
Therefore, half life of the a sample of a radioactive substance decayed to 95% of its original amount after a year is 0.152a
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If 4.5 l of antifreeze solution (specific gravity = 0.80) is added to 3.8 l of water to make a 8.3 l mixture, what is the specific gravity of the mixture?
The specific gravity of the mixture is 0.89.
Antifreeze volume = 4.5L
Specific gravity of antifreeze = 0.80
Water volume = 3.8L
Specific gravity of water = 1
Specific gravity of the mixture =
(volume of water * water specific gravity + volume of antifreeze * antifreeze sg) / volume of mixture
= (3.8 * 1 + 4.5 * 0.80) / 8.3
= 0.89
A measurement of a substance's density in relation to water's density is its specific gravity, which is more officially known as relative density. In general, specific gravity is calculated for solids and liquids in respect to water in its densest condition (at a temperature of 4 Celsius or 39.2 Fahrenheit), and for gases in relation to air at room temperature.
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Most hydrogen atoms have a mass of 1. How many protons would there be in one of these hydrogen atoms?
Answer:one Proton
Explanation: Since there is only one proton in hydrogen and no neutrons, the atomic mass of the substance is 1. It is 4 for helium: 2 protons and 2 neutrons. The number of neutrons is equal to the number of protons for the majority of the 16 lightest elements (up to oxygen).
the volume rate of flow q ithroug a pipe containing a slowly moving liqudi is giving by. would you classify this equation as a general homogenoe sequations
Yes I would verify this equation as a general homogeneous equations.
What is homogeneous equation?
An equation with a differentiation, a function, and a number of variables is called a homogeneous differential equation. For any non-zero constant, the function f(x, y) in a homogeneous differential equation is a homogeneous function such that f(x, y) = nf(x, y).
[tex]Q= 8 μ ℓπ R 4 Δp[/tex] is given.
Put primary FLT dimensions to use.
[tex]L 3 T −1 =( 8π ) (FL −2 T) (L)(L) 4 (FL −2[/tex] Adding and removing each side's exponent.
[tex](L) (3) (T) (−1) =( 8π ) (F) (1−1) (L) (4−2+2−1) (T) (−1)[/tex]
[tex](L) 3 (T) −1 =( 8π ) (L) 3 (T) −1[/tex]
The right side and left side of the equation are identical.
The equation is consequently a general homogeneous equation.
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Question :
The volume rate of flow, Q, through a pipe containing a slowly moving liquid is given by the equation:
Q=\frac{\pi R^{4} \Delta p}{8 \mu \ell}Q= 8μℓπR 4 Δp
where R is the pipe racius, \Delta pΔp the pressure drop along the pipe, \muμ a fluid property called viscosity \left(F L^{-2} T\right)(FL
−2
T), and \ellℓ the length of pipe. What are the dimensions of the constant \pi / 8π/8? Would you classify this equation as a general homogeneous equation? Explain.
if a 125 ml erlenmeyer flask weighs 88.5 g, what is the volume in liters? group of answer choices 12.5 l 1.25 l 0.125 l 125 l 1250 l
The Erlenmeyer flask that weighs 88.5 g has a volume of 0.125 L
To solve this problem, we have to do the conversion of units with the given information.
Information about the problem:
Volume(mL) = 125 mL1 L is equivalent to 1000 mLBy converting the volume units from milliliters (mL) to litters (L), we have:
125 mL * (1 L / 1000 mL) = 0.125 L
0.125 L is equivalent to 125 mL
What is unit conversion?It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.
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7th GRADE SCIENCE QUESTION PLEASE ANSWER AS FAST AS YOU CAN I NEED IT (it can be 1 day late is fine... Ok I'll give you today like this minute and you can answer it when it is posted about 1-2 days but if you can answer it now that will be great)!!!
Question #1: State the role of a nucleus in a cell.
Answer:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
based on the mohs hardness scale which mineral could be scratched by a penny but not by a fingernail
Based at the Mohs Hardness Scale, Calcite will be scratched via way of means of a penny however now no longer via way of means of a fingernail.
What is mohs hardness scale?
The Mohs scale of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals via the capacity of more difficult fabric to scratch softer fabric.
Despite its loss of precision, the Mohs scale is applicable for area geologists, who use the size to more or less discover minerals the usage of scratch kits. The Mohs scale hardness of minerals may be generally discovered in reference sheets.
Mohs hardness is beneficial in milling. It lets in evaluation of which type of mill will nice lessen a given product whose hardness is known.[8] The scale is used at digital producers for trying out the resilience of flat panel show components (inclusive of cowl glass for LCDs or encapsulation for OLEDs), in addition to to assess the hardness of contact displays in customer electronics.
Based at the Mohs Hardness Scale, Calcite will be scratched via way of means of a penny however now no longer via way of means of a fingernail.
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Calculate the amount of water that must be added to 6.55 g of nacl to make a solution that is 16.2y mass at 25c.
The amount of water that must be added to 6.55 g of nacl to make a solution that is 16.2 % by mass at 25c is 33.8grams.
Given, the mass of NaCl = 6.55grams.
given, Percentage by mass of the solution is 16.2%
By percentage by mass formula we calculate the mass of NaCl in the solution.
Percentage by mass of the solution = Weight of NaCl / mass of solution(w) ×100
16.2 = 6.55/ (w) ×100
on calculating, we get w = 40.43grams.
Now, mass of the solution = mass of NaCl + Mass of water
40.43g = 6.55 + Mass of water
Mass of water = 33.8grams.
Thus, the mass of water which can be added to the solution which is 16.2% by mass is 33.8grams.
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Based on what you observed during this experiment, is dichloromethane denser or less dense than water? explain your reasoning.
Due to its higher density than water, dichloromethane creates an organic layer below the aqueous layer as opposed to above it as other solvents do.
Which compound is dichloromethane?
Organochlorine chemical dichloromethane (DCM, often known as methylene chloride or methylene bichloride) has the formula CH2Cl2. A common solvent is this colorless, flammable liquid with a sweet, chloroform-like odor. Although it is polar and miscible with many organic solvents, it is not miscible with water.
Methylene chloride, often known as dichloromethane, is an organic halogen compound that is colorless, volatile, and essentially nonflammable. It is frequently employed as a solvent, particularly in paint-stripping formulas.
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If a scientist wanted to compare air quality throughout the united states but was unable to test the air in every city, the scientist could compare the air quality in a ______ or subset of cities.
If a scientist wanted to compare air quality throughout the united states but was unable to test the air in every city, the scientist could compare the air quality in a sample or subset of cities.
How to check the air quality?
The Air Quality Index, or AQI, is used to gauge air quality. The AQI functions similarly to a thermometer with a range of 0 to 500 degrees. But the AQI is a technique of displaying variations in the quantity of pollution in the air, not changes in temperature.
How do you sample air quality?
Small volumes of air can be collected through air sampling for testing in laboratories. The majority of air sampling techniques use a suction mechanism to draw complete air samples into a bag or container. After that, the bag or container can be sealed before being sent to a lab for analysis.
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would you be able to get energy from food if there weren't chemical reactions in your body?(it's for today)(science)
Answer:
No.
Explanation:
Energy is releasing into your body via a process of chemical reactions called respiration. Without respiration, energy cannot be released from food and transfered to cells.
several emergent properties of water contribute to the suitability of the environment for life. how does the ability of water to function as a versatile solvent arise from the structure of water molecules?
Polarity of water is responsible for the versatility of water as a solvent.
What is water?Water is a molecule that is composed of hydrogen and oxygen. The compound is polar because if the high electronegativity difference that exists between hydrogen and oxygen.
As a result of this polarity, a permanent dipole moment exists between the molecules of hydrogen. This is a strong dipole that makes the molecules of water to aggregate together. This strong dipole that exists in water is what we call the hydrogen bond.
Now the hydrogen bond makes water to have a high surface tension and high boiling point. It also accounts for the differences in the solid and the liquid states of water.
As such, the polarity of water is responsible for the versatility of water as a solvent.
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what is true about covalent compounds? select all that apply. they have freely-moving electrons. they have freely-moving electrons. they mostly form molecules. they mostly form molecules. they can be gases, liquids, or solids. they can be gases, liquids, or solids. they are made from ions.
The statements that are true about covalent compounds are;
they have freely-moving electronsthey can be gases, liquids, or solid they mostly form molecules.What is covalent compound?Covalent compound refer to elements that are bonded by a covalent bond and it is formed when pair valence electrons in atoms are shared among each other. The compounds with covalent bonding are either liquid or gaseous at room temperature. Examples include ammonia.
Therefore, The statements that are true about covalent compounds are;
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What type of orbitals best describe the bond between the adjacent oxygens in peroxyacetic acid?
sp³-sp³ type of bonds best describes the bond between the adjacent oxygen.
What are orbitals?An atomic orbital is a function that describes the position and wave-like activity of an electron in an atom in terms of both atomic theory and quantum mechanics. This function may be used to determine the likelihood of discovering any atom's electron in any certain area surrounding the nucleus.
The electron cloud model is used by chemists to map out the electrons' atomic orbitals; these probability maps are not all spherical. The periodic table's trends can be predicted in part by their forms.
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an atomic orbital defines the of finding an electron in a particular region of an atom. this electron density is defined by the square of the schroedinger function.
The answer for the particular question is probability and Schrodinger wave function.
The correct question would be :
an atomic orbital defines the __________ of finding an electron in a specific region of an atom. this electron density is referred by the square of the Schrodinger __________ function.
An atomic orbital is 3d structure where electrons are moving.
The Schrodinger wave equation connects the energy of an atom to its electrons with regard to the wave function of the electron. Each solution to the equation indicate an permits energy state of the atom and is connected with a specific atomic orbital.
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How to work out number of protons, electrons and neutrons?
Answer:
protons=atomic number
electrons=atomic number-charge
proton=atomic mass-atomic number
What amount of heat must be added to 75g of ethyl alcohol to heat it from -5c to 35c
7380 J/g is the amount of heat must be added to 75g of ethyl alcohol to heat it from -5c to 35c
What is specific heat capacity?
The quantity of heat energy needed to raise the temperature of a unit mass of any substance or matter by one degree Celsius is known as its specific heat capacity.
The formula is as follows:
Q= m c ΔT
Here, Q is the quantity of heat energy needed to raise the temperature of one kilogram of a substance by one degree Celsius, and s is the system's specific heat capacity.
Here,
m = 75g
c = 2.46J/g °C
ΔT = 40°C
Q = 75*2.46*40 = 7380 J/g
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When replacing a system baord on a server using liquid cooling in place of tradtional heart sinks to coll the cpus, what facts are true?
Simply transfer the cold plate/processors to the new system board; there is no need to remove the processor or disrupt the thermal material bond from the cold plate.
How does server liquid cooling function?A cold-water conduit into your CPU is only one form of liquid cooling; there are a few others as well. Some server cabinets have chilled rear doors where cool air is pushed onto the server and cold water is piped through.
How does the cold plate technology function?Microsoft is one of the IT corporations working with cold plate technology, which uses pipes of liquid to cool servers through metal plates. By employing it to cool the chips that record digital currency transactions, participants in the cryptocurrency business invented liquid immersion cooling for computing hardware.
In a CPU cooler, where does the coolant go?The water block's coolant absorbs the heat from the CPU. To keep the processor or graphics card cold, a cooling liquid is known as coolant loops around the cooling kit. To remove air bubbles from the liquid as it circulates, the reservoir stores extra coolant.
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C10H22 > C8H18+C2H4 if only ethane can be sold what is the atom econmy of this process
Answer:
The atom economy of ethane in this process is 19.72 %.
What is atom economy?
The conversion efficiency of a chemical reaction in terms of all the atoms involved and the desired products produced is known as atom economy (atom efficiency/percentage).
Explanation:
C₁₀H₂₂ → C₈H₁₈ + C₂H₄
Molecular weight of C₁₀H₂₂ = 142.28
Molecular weight of C₈H₁₈ = 114.228
Molecular weight of C₂H₄ = 28.053
% Atom economy = [tex]\frac {Molecular weight of C2H4} {Molecular weight of C10H22}[/tex]
= [tex]\frac{28.053}{142.28}*100[/tex]
= 19.716 %
≈ 19.72 %
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What would be the most appropriate unit for measuring the amount of salt in a salt shaker?
For units of volume: 1 milliliter is about the volume of a raindrop. 1 cup is about the volume of a school milk carton.
What is volume?The volume occupied by an object in three dimensions is calculated. It is often quantified mathematically using SI-derived units, such as the cubic meter and liter, or other imperial measures (such as the gallon, quart, cubic inch). The definitions of volume and length have a connection (cubed). Usually, the volume of a container is thought of as its capacity, or the amount of fluid (gas or liquid) that it could hold, rather than the amount of space the container takes up.
Ancient societies used standardized containers, which were later formed from naturally occurring containers, to compute volume. Several three-dimensional shapes have simple mathematical formulas that can be used to calculate their volumes.
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The mixing of which pair of reactants will result in a precipitation reaction? nano3(aq) nh4cl(aq) k2so4(aq) sr(no3)2(aq) csi(aq) naoh(aq) hcl(aq) ca(oh)2(aq)
Precipitate of SrSO₄ forms in the reaction of SrNO₃(aq) and K₂SO₄(aq) .
Possible pairs of reaction are below.
CsI(aq)+NaOH(aq) → CsOH(aq) + NaI (aq) :: No precipitate
2HCl(aq)+Ca(OH)₂(aq) → CaCl₂(aq) + 2H₂O(l) :: No precipitate
K₂SO₄(aq)+Sr(NO₃)₂(aq) → SrSO₄(s) + 2KNO₃(aq) :: Precipitate of SrSO₄ forms.
NaNO₃(aq)+NH₄Cl(aq) → NaCl (aq) + NH₄NO₃(aq) :: No precipitate
Here, the double-displacement reaction takes place between potassium sulfate and Strontium nitrate, both compounds are very soluble in water. The end products in the reaction are potassium nitrate and Strontium sulfate.
By remembering the solubility rules of nitrates, we infer that all nitrates are soluble.
Here, Potassium sulphate is also soluble, and the solubility rule for sulfates indicates that Strontium sulfate(SrSO₄) is insoluble. Hence, it will precipitate from solution.
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During an experiment, your lab partner spills about 20 ml of 1.5 m hcl on your hand. what should you do?
I Will spill a corrosive substance on my skin or clothing, wash it off with plenty of water for 15 minutes. Use the safety shower if i were exposed to a large HCl
What do you have to do if you spill hydrochloric acid?
Acid spills should be neutralized with bicarbonate of soda and then cleaned up with a paper towel or sponge. don't use a strong base, like sodium hydroxide, to neutralize a robust acid like hydrochloric acid. The bicarbonate of soda will do the job with much less chance of injury
How should an acid spill be cleaned up?
Acids are often neutralized with soda ash or sodium bicarbonate whereas bases can be neutralized with citric acid or ascorbic acid. Following neutralization, the pH of the spill should be checked to make sure that the spill has been neutralized
Why does one have to immediately clean up any HCl spill?
Spills of acid or sulfuric acid can lead to significant contamination of the environment if not handled quickly and properly. DEQ's goal is to wash up spills within 72 hours of an incident
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marie is grilling potatoes. she would like to give them a sweet and sour flavor. what ingredient will add that touch? 3 potatoes cut in half 1 1/2 teaspoons salt
To indicate the quotient of two integers, use fractions.
11/15 of the potato was used.
From the question, we have the following parameters:
1 bag = 15 sweet potatoes
Casserole = 2/5
Pie = 1/3
The fraction of potato used is calculated using:
Fraction = Casserole + Pie
Take LCM
11/15
Hence, the fraction of potato used is 11/15
What is an integer?There are three different kinds of integers: 0 (zero), positive integers (natural numbers), and negative integers (Additive inverse of Natural Numbers)
The collection of whole numbers and their antipodes is known as the integers. The set of integers does not include fractions or decimals. Integers include, for instance, 2,5,0,12,244,15, and 8.
The number zero (0), a positive natural number (1, 2, 3, etc.), or a negative integer denoted by a minus sign (1, 2, 3, etc.) are all examples of integers.
The inverse additives of the equivalent positive numbers are the negative numbers.
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is it the pair of angles are supplementary. m/A = 120° and m/B = 60°
iron filings are attracted by a magnet. this is a physical property of iron but noy of most other materials
Using a magnet and the magnetic property of iron—which attracts iron but not sand—one can separate a combination of iron filings and sand.
What exactly are physical qualities?Physical characteristics are those that may be observed by looking at an item or substance. When the makeup of a substance changes, certain qualities remain constant.
Sand and iron can be separated using an object's magnetic characteristics, which are the ability to attract magnets and/or materials containing iron.
So, one may separate a mixture of iron filings and sand using a magnet and iron's magnetic characteristic, which attracts iron but repels sand.
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Iron filings are attracted by a magnet. This is a physical property of iron but not of most other materials, including sand. How could you use this difference in physical properties to separate a mixture of iron filings and sand?
The balanced equation for the reaction in this experiment is 3CuSO4(aq) + 2Al(s) →→→ Al2(SO4)3 + 3Cu(s) In this experiment, you have seen that exactly 1,99 g copper sulphate is reacted aluminium. When the reaction reaches completion, 0,57 g of copper was collected. Determining the limiting reagent 2.1.1 Calculate the number of moles in 1,99g of copper sulphate.
2.1.2 Calculate the number of moles in 0,254g of aluminium.
2.1.3 Determine the limiting reagent in this reaction. Provide some calculations as well as a justification for your answer.
The balanced equation for the reaction in this experiment is 3CuSO4(aq) + 2Al(s) →→→ Al2(SO4)3 + 3Cu(s) In this experiment, you have seen that exactly 1,99 g copper sulphate is reacted aluminium. When the reaction reaches completion, 0,57 g of copper was collected. Determining the limiting reagent 2.1.1 Calculate the number of moles in 1,99g of copper sulphate.
2.1.2 Calculate the number of moles in 0,254g of aluminium.
2.1.3 Determine the limiting reagent in this reaction. Provide some calculations as well as a justification for your answer
3CuSO4(aq) + 2Al(s) → Al2(SO4)3 + 3Cu(s)
as per the reaction , we can see that in this
3 moles of copper sulphate and 2 moles of aluminium required to make 1 moles of aluminium sulphate and 3 moles of copper
so from this we concluded that copper sulphate is limiting reagent because due to high moles needed it will cause to stop reaction
as in reaction 3 moles copper sulphate requires 480g and 2 mole aluminium requires 54g so here CuSO4 is limiting reaction.
2.1.1) number of moles in 1,99g of copper sulphate.
moles= given mass of substance/ molecular mass of substance
moles= given mass of copper sulphate/ molecular mass of copper sulphate
moles = 1,99g/160g
moles=1.24 moles
2.1.2) number of moles in 0,254g of aluminium.
moles= given mass of aluminium/ molecular mass of aluminium
moles=254g/27
moles=0.40mole
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electrons may be in more than one orbital at once, due to the general possibility of superposition of quantum state
This question probably pertains to an experiment called a double-slit interference experiment or a similar experiment. Let's say that slit 1 is closed and that we conduct the experiment with solitary electrons or photons.
Behind slit 2, we observe an incremental accumulation of hits in a non-interference pattern. Let's say we seal the slit. Behind slit 1, we can see the non-interference pattern. Let's now widen both slits. The impacts then create an interference pattern, as we can see. Note that (assuming it's a nearly flawless experiment with a very distinct interference pattern), there are specific locations termed "nodes" where NO electrons collide. The logical conclusion is that each individual electron "knows" that both slits are open when both are open, meaning that each electron effectively passes through both slits.
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Calculate the solubility of calcite (caco3) at ph 6.3 and 10.3 assuming a total carbonate of 5 mm. the ksp of calcite is 3.36 x10-9.
The Ph = 10.3 and S = 8.287 x [tex]10^{-5}[/tex]
CalculationCaCO3 → Ca^+2 + [tex]CO_{3} ^{-2}[/tex]
Ksp = [Ca^+2] [ [tex]CO_{3} ^{-2}[/tex]] = s^2
We need to take into account the hydrolysis of carbonate ion with
K2 = 4.1 x [tex]10^{-11}[/tex]
H[tex]w_{3}^{-}[/tex] ⇄ H+ + [tex]w_{3}^{-2}[/tex]
K2 = [tex]\frac{[H+][CO_{3}^{-2}] }{[HW_{3}^{-}] }[/tex]
S = [tex]\sqrt{Ksp}[/tex]
S = [tex][Ca^{+2}] = [CO_{3}^{-2}] + [HW_{3}^{-}][/tex]
On putting the values, we will get
[tex][Ca^{+2}] = [CO_{3}^{-2}] +(1+ \frac{H^{+} }{K_{2} })[/tex]
S^2 = Ksp (1 + [tex](1+ \frac{H^{+} }{K_{2} })[/tex])
S = [tex]\sqrt{ Ksp (1+ \frac{H^{+} }{K_{2} })}[/tex]
at Ph = 6.3
[H+] = 5.011 x [tex]10^{-7}[/tex]
S = [tex]\sqrt{3.36 * 10^{-9} * (1+\frac{5.011*10^{-11} }{4.8*10^{-11} }) }[/tex]
S = 5.92 x [tex]10^{-3}[/tex]
at Ph = 10.3
[H+] = 5.011 x [tex]10^{-11}[/tex]
S = [tex]\sqrt{3.36 * 10^{-9} * (1+\frac{5.011*10^{-11} }{4.8*10^{-11} }) }[/tex]
S = 8.287 x [tex]10^{-5}[/tex]
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