The equilibrium constant is K=[KNO3]/[AgNO3][KSCN]
The equilibrium constant is defined as the ratio of the concentration of products upon reactants.The species present in solid phase are taken as unity.Substituting the values, we getK=[KNO3][AgSCN]/AgNO3][KSCN]K=[KNO3]×1/[AgNO3][KSCN]k=[KNO3]/[AgNO3][KSCN]The ratio of reactant to product amounts that is used to predict chemical behavior is the definition of the equilibrium constant for a chemical process. The rate constants are constant at a certain temperature.The value of a chemical reaction's reaction quotient at chemical equilibrium, a condition that a dynamic chemical system approaches is the equilibrium constant for that reaction when enough time has passed and at which its composition shows no evident tendency to change further.The equilibrium constant is independent of the initial analytical concentrations of the species of the reactant and product in the mixture given a certain set of reaction conditions.As a result, the composition of a system at equilibrium may be calculated from its starting composition using known equilibrium constant values. However, factors affecting the reaction such as temperature, solvent, and ionic strength may all affect the equilibrium constant's value.To learn more about equilibrium constant visit:
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Determine the type of investigation.
How does an iPod receive messages?
comparative
none is correct
experimental
descriptive
Answer:
comparative
Explanation:
The massage just pop on the ipod
Write an equation that shows the formation of the bromide ion from a neutral bromine atom.
The equation that shows the formation of the bromide ion from a neutral bromine atom is as follows: Br + e- → Br-
What is an ion?Ion is the atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.
An atom becomes an ion when it loses or gains electrons.
According to this question, bromine atom is neutrally charged but quicky becomes charged into an ion when it gains one electron. The equation is represented as follows:
Br + e- → Br-
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Which of the following statements correctly describes density?
Answer:
Helper
Explanation:
is the expaltin of the explatin
Give the electron configuration using the crystal field theory of the following complexes and show your configuration in the the crystal field diagram (N.B calculate the oxidation number of metals 1st).
1. [Co(NH3)5Cl]Br2
2. Na3[Fe(CN)6]
The oxidation number of the cobalt is +2 while the oxidation number of iron is +3.
What is the crystal field theory?According to the crystal filed theory, the ligands serve as point charges and when they are introduced to the symmetrical octahedral crystal field, the field splits and the there is a barry center with electrons that are above and below the barry center depending on their energy.
Hence, we can see that cobalt II ion is a d7 specie with electron configuration; [tex]1s^2 2s^2 2p^6 3s^2 3p^6 3d^7[/tex]. The iron III ion is a d5 specie having electron configuration[tex]1s^2 2s^2 2p^6 3s^2 3p^6 3d^5[/tex]. The oxidation number of the cobalt is +2 while the oxidation number of iron is +3.
The crystal field diagram of each of the ions is shown in the image attached.
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0.3060 x 10^17 atoms of Kr(g) = how many moles ?
There are 0.05 x [tex]10^{-6}[/tex] number of moles of Kr(g) having 0.3060 x [tex]10^{17\\}[/tex]atoms .
A mole is 6.02214076 x 1023 of any chemical unit, including atoms, molecules, ions, and others. Due to the large number of atoms, molecules, or other components that make up any substance, the mole is a useful measure to utilize.
Calculation .
One mole of the any atoms contains 6.022 x [tex]10^{23}[/tex] atoms .
So , the number of moles of Kr(g) having 0.3060 x 10^17 atoms is calculated as ,
number of moles of Kr = 0.3060 x [tex]10^{17\\}[/tex]atoms x 1 mole / 6.022 x [tex]10^{23}[/tex]atoms
number of moles of Kr = 0.05 x [tex]10^{-6}[/tex] mole
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Which process allows liquid water on the surface to enter the atmosphere?
evaporation
condensation
sublimation
transpiration
Kp equals 25 at 500c. The pressure of butane is 20. atm and isobutane is 0.0 atm Calculate the pressure of both gases at equilibrium.
The pressure of butane is 20 P(butane) = 0.77 atm and pressure of P(isobutane) = 19.2 atm
Isomerization reactionIsomerization is the transformation of a molecule into a different isomer, and it can take one of two forms: cis or trans. Protein isomerization was first described in 1968 as a method of dramatically altering protein conformation by disrupting polypeptide secondary structure.
Isomerism is caused by two main factors: Difference in atom linking mode. Difference in the spatial arrangement of atoms or groups. The difference in the mode of atom linking is one of the two main causes of isomerism. Difference in the spatial arrangement of atoms or groups.
Types :The two main types of isomerism are structural or constitutional isomerism, in which the bonds between the atoms differ, and stereoisomerism or spatial isomerism, which occurs when the bonds are similar but the relative positions of the atoms differ.
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I understand the question you are looking for
For the isomerization reaction:
butane ⇌ isobutane
Kp equals 25 at 500°C. If the initial pressures of butane and isobutane are 20. atm and 0.0 atm, respectively, what are the pressures of the two gases at equilibrium?
A) P(butane) = 20 atm and P(isobutane) = 0.80 atm
B) P(butane) = 19.2 atm and P(isobutane) = 0.77 atm
C) P(butane) = 0.77 atm and P(isobutane) = 19.2 atm
D) P(butane) = 0.80 atm and P(isobutane) = 20. atm
I need help please:
Zootopia:
This movies theme is on stereotypes within culture and the influence police have on the Publics perception. Explain how this can happen and it’s impact on civil and criminal justice.
Answer:
down below
Explanation:
The police's influence can happen based on a response to a problem. An example is when the police are called because of a thief child. If the police handles the situation correctly-using reasonable force, if necessary, and reading them their rights- the public will perceive the police in a good light or way. If the police use gross misconduct and do not go by the book, then they will be perceived as an enemy or in a bad light or way.
how many moles are present in 1.0 m3 O2 at STP
Answer:
Explanation:0.089mol
at STP 22.4l of any ideal gas is the volume of one mole which means the number of moles in 02 is222.4=0.089.
2013 Cengage Learning
3. A student measured the dimensions of a table and recorded the length as 103.50 cm and the width
as 73.75 cm. According to the student's calculator, the area is 7633.125 cm². What value should the
student report as the area? Explain your answer.
Dimensions of a table and recorded the length as 103.50 cm and the width
as 73.75 cm
AREA = L × B
AREA = 103.50 × 73.75
area = 7,633.125 cm²
but the student should report 7633 cm² because the width measurement (73.75 cm) has 4 significant figures while the length measurement (103.50 cm) has 5 significant figures and when multiplying the answer should have the same number of significant figures as the number with the least number of sig figs.
Significant Figures can help determine the accuracy of a number by the number of significant figures it contains.so the correct answer should be 7633 cm².
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Question 9(Multiple Choice Worth 2 points)
(03.01 LC)
Which of the following is an example of matter?
O Electricity
O Heat
O Sound
O Water
If the bond length in a XY molecule is 212,
what will be the covalent radius of atom X, if
the covalent radius of Y atom is 93.
O
119
2.27
128
3
Answer:
The correct answer is 119.
Explanation:
We are given the bond length of XY is 212.
The covalent radius of Y = 93.
Now this means that the bond length(R) is sum of the radio of X and Y Atom.
So, R(XY)=r(X)+r(Y)
212 = r(X)+93
r(X)= 119.
Therefore, the covalent radius of X is 119.
I hope this helps, have a good day! :D
Bond length is the distance between two bonded atoms. The covalent radius of X in XY molecule with bond length 212 and Y with a covalent radius of 93, is 119.
What is covalent radius?Covalent radius is the measure of the atomic size bonded with another atom through covalent bond. Covalent bonds are formed between non-metals with comparable electronegativities.
Bond length of molecule is the distance between the two bonded atom. Mathematically bond length of a covalent compound is the sum of covalent radius of the two bonded atoms.
The bond length of the molecule XY is given as 212 and the covalent radius of Y atom is 93. The bond length 212 is the sum of covalent radius of Y and covalent radius of X.
Covalent radius of X = 212 - 93 = 119.
Therefore, covalent radius of X atom in the XY molecule with bond length 212 and Y atom with covalent radius of 93 is 119 thus, option a is correct.
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A car is traveling 65.0 miles per hour. Convert this to meters per second.
Answer:
29.0576
Explanation:
To convert miles per hour to meters per second you divide the speed value by 2.237.
What are the characteristics of a metallic bond?
A. Electrons are shared unequally between two atoms.
B. Electrons move freely among positively charged ions.
C. Electrons are shared equally between two atoms.
OD. Electrons are transferred from one atom to another.
Answer: my answer would be a
Explanation: so i did some research and all of it came up with the answer (A).
How many moles are in 9.27 x 10^22 atoms of silicon
The number of moles are in 9.27 x [tex]10^{22}[/tex] atoms of silicon is 0.153
The number of atoms is given as follows;
Atoms= nxNa
9.27x[tex]10^{22}[/tex]=nx6.022x[tex]10^{23}[/tex]
n=9.27x[tex]10^{22}[/tex]/6.022x[tex]10^{23}[/tex]
n=1.53x[tex]10^{-1}[/tex]
n=0.153
The number of moles n, is 0.153
The International System of Units uses the mole (symbol: mol) as the unit of material quantity. The number of elementary entities of a certain substance are present in an item or sample is determined by the quantity of that material.The mole, symbol mol, is the unit of amount of substance.Mole is a standard scientific unit used to measure large quantities of very small entities such as atoms, molecules, ions, etc.To learn more about mole visit:
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Concerning the rate law, Rate = K[A]²[B], what are appropriate units for the rate
constant k?
The correct answer is M^-1s^-1.
The proportionality constant in the rate law expression, known as the rate constant or the particular rate constant, represents the relationship between the rate of the reaction and the concentration of the reacting species. Because it equals the rate of the reaction when the concentration of the reactants is assumed to be unity, it is known as the specific rate constant. The speed and direction of a chemical reaction are measured by a reaction rate constant. We are aware that the values of the Rate constant vary with temperature.
The given rate law is:
Rate = k[A][B]
The units of rate are always Ms^-1 and the units of [a] are mol so: mol*s^-1
Putting the units in the given rate law:
Rate = k[A][B]
Ms^-1=k×(M)×(M)
k=Ms^-1/M^2
k=M^-1s^-1
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Order these materials from best to worst conductors of heat
Chalk, Air, Iron, stainless steal, copper, concrete, diamond and oak.
Answer:copper,stainless steel,iron,diamond,oak,calk,air
Explanation:your metlas is your meterials that absorbs most heat'
Calculate the ratio of the mass ratio of S to O in SO to the mass ratio of S to O in SO2 . Consider a sample of SO in which the mass of S = 32 g and the mass of O = 16 g . Assume that in SO2 that there is also 32 g of S .
The correct answer is The mass ratio of S to O in SO divided by the mass ratio of S to O in SO2 is 2 :1.
When two elements can combine to form two or more different compounds, the mass of one element compared to the fixed mass of the other will always be in a ratio of small whole numbers.
As we all know,
Oxygen mass = 16 g
Sulfur mass = 32 g
Sulfur mass in SO = 32 g
The mass of oxygen in SO is 16 g.
Sulfur to oxygen mass ratio in SO =..... (1)
Sulfur mass in SO2 = 32 g
Oxygen mass in SO2 = (2 16)g = 32 g
Sulfur to oxygen mass ratio in SO2 =..... (1)
The S/O ratio in SO is 2: 1.
The S/O ratio in SO2 is 1: 1.
Taking the ratios 1 and 2, we get:
the mass ratio of S to O in SO to mass ratio of S to O in SO2 is 2 : 1
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Which of the following elements would you expect to be most reactive, based
on the number of valence electrons it has?
O A. Potassium (K)
OB. Titanium (Ti)
O C. Iron (Fe)
O D. Calcium (Ca)
A. Potassium
this is because it only has one valence electron, which can be very easily removed, hence it's reactivity.
How do you find the number of
electrons in a neutral atom?
Forest food web………….
Forest Food web consists of the producers, main consumers, secondary consumers, scavengers, and decomposers. Food web is the collection of the large number of food chains.
What are some examples of food webs?Numerous food chains make up a food web. As animals seek food, a food chain only follows one way. As an example, a hawk consumes a snake following the consumption of a frog, a grasshopper, and grass. A food web illustrates the numerous relationships between plants and animals.
What are the different types of food web?1. Primary consumers
2. Secondary consumers
3. Tertiary consumers
4. Decomposers or phytoremediators
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What is Judy Hopps reception like once she joins the Zootopia police force? Why is this?
If 31.5 grams of bromine and 14.0 grams of chlorine combine to form bromine monochloride, how many grams of bromine monochloride must form?
The correct answer is 45.21 g.
This issue will be resolved with the aid of the idea that chemical equilibrium is the rate of reversible processes at which the concentration of the reactants and products does not vary over time. The rate of reaction is exactly proportional to the raised to the power equal to the relevant stoichiometric coefficient, states the law of mass action.
Bromine monochloride is created when 31.5 grammes of bromine and 14.0 grammes of chlorine react.
Br2 + Cl2 ---> 2BrCl
mol Br2= 31.5/160g/mol= 0.196mol
mol Cl2= 14g/70.906g/mol= 0.197mol
Number of moles of BrCl formed = 2×0.196= 0.392 mol.
mass BrCl= 0.392 mol x 115.357g/mol= 45.21 g
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The U.S. Environmental Protection Agency (EPA) sets limits on
healthful levels of air pollutants. The maximum level that the EPA
considers safe for lead air pollution is 1.5 μg/m³
By applying Avogadro's constant, the number of lead atoms present in your lungs is equal to 2.49 × 10¹³ atoms of lead.
What is a conversion factor?A conversion factor can be defined as a number that is typically used to convert (change) a number in one (1) set of units to another, either by dividing or multiplying.
Generally speaking, an appropriate conversion factor to an equal value must be used when it is necessary to perform any mathematical conversion.
Conversion:
1.5 μg lead = 1 m³ of air.1 m³ = 1000 Liters (L)1 mole of lead = 207.2 grams of lead.1 gram (g) = 10⁶ microgram (μg).1 mole of lead = 6.022 × 10²³ lead atoms.Next, we would convert the volume of lungs in liters to meter cube (m³):
Volume of lungs = 5.6/1000
Volume of lungs = 5.6 × 10⁻³ m³.
Assuming the whole volume of lungs is filled with air, the number of lead atoms present is given by:
Number of lead atoms = 5.6 × 10⁻³ × 1.5
Number of lead atoms = 8.55 × 10⁻³ μg of lead.
Next, we would convert the mass of lead into moles of lead as follows:
Moles of lead = 8.55 × 10⁻³ × 1/207.2 × 1/10⁶
Moles of lead = 8.55 × 10⁻³/(207.2 × 10⁶)
Moles of lead = 4.13 × 10⁻¹¹ mole of lead.
Finally, we would determine number of lead atoms present by using Avogadro's constant:
Number of lead atoms = 4.13 × 10⁻¹¹ × 6.022 × 10²³
Number of lead atoms = 2.49 × 10¹³ atoms of lead.
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Complete Question:
The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA considers safe for lead air pollution is 1.5 μg/m³. If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.60 L.)
What new combined branch of study was developed from the
study of matter within living systems?
According to the research, the correct option is Biochemistry. It is a new combined branch of study that was developed from the study of matter within living systems.
What is Biochemistry?It is an integrating science or scientific discipline that studies at the molecular level the characteristics and functions of the chemical components of living beings.
In this sense, it is responsible for the study of substances such as proteins, lipids, carbohydrates that are present in living organisms and the fundamental chemical reactions for vital processes.
Therefore, we can conclude that according to the research, the correct option is Biochemistry. It is a new combined branch of study that was developed from the study of matter within living systems.
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Calculate the density, in g/mL, of a liquid that has a mass of 0.115 g and a volume of 0.000275 L.
Density of the liquid is 0.418g/mL
The liquid sample has a volume of 0.000275 L. We can convert this to mL (because we are asked to find the density in g/mL):
mass of liquid= 0.115 grams
volume of the liquid, V= 0.000275L
Density is defined as the ratio of mass per unit volume
Now we must convert the unit of volume from L to ml as liter is SI unit which goes with Kilogram
volume in ml = 0.000275 ml/l x 1000 =0.275 ml
Density d = mass/volume
= 0.115/ 0.275
= 0.418 g/mL
Hence the density of the liquid is 0.418 g/mL
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A sextant resembles which mathematical instrument?
Answer:
quadrant
Explanation:
sextant (astron.) instrument resembling a quadrant having a graduated are equal to ⅙ of a circle.
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Rene grew bacteria from mouth on special plates in the lab she placed drops of different mouthwashs on bacteria on each plate
The correct answer is Test the hypothesis with an experiment.
Rene grew bacteria from mouth on special plates and now she is conducting a research on those bacterias by dropping different mouthwash on them to find out effect of mouthwashes on bacteria. This comes under the category of test the hypothesis with an experiment. When performing experiments and investigating observations, the scientific method is a technique that is used.This method's objective is to identify the connections between cause and effect in diverse contexts and applications.There are total seven steps of scientific method:Ask the questionPerform research Establish your hypothesisTest your hypothesis by conducting experimentMake an observation Analyse the result and draw the conclusionPresent the findingsThe key goal of 4th step is to gather information and facts to test our idea.
Therefore, Rene is on the 4th step of scientific method.
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Help help help please
What is the chemical equation for frying an egg
The given chemical reaction is :
Calcium Oxide (s) + Water (l) → Calcium Hydroxide (s)
Molecular Changes : A chemical reaction is one in which the replying substances experience changes at the molecular position. This means that bonds between tittles of the reactants are broken, and tittles are changed or rearranged to produce commodity new. Chemical reaction can be reversible or unrecoverable.
What happens when frying an egg ?
Frying an egg is a chemical response. It's an illustration of an endothermic response or bone that takes in heat to make the response do. An egg is made up of proteins and water, and the thralldom also contains fat. When an egg is hotted , the proteins begin to change their structure. Protein motes are veritably complex, made up of long chains of structure blocks called amino acids. These chains are also folded and twisted to make complicated molecular structures. Hotting the egg adds energy, which causes the motes to begin to move and lose their shape. Bonds holding the shape of the protein motes together begin to break, unfolding the proteins and allowing them to spread out. New bonds are formed, and water evaporates out of the egg, changing it into a semi-solid. The egg has experienced anon-reversible chemical response, as it can not be changed back into its raw state.
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