The equilibrium concentrations of
[I₂] = [Cl₂] = 0.0176 M
[ICl] = 0.0528 M
Given:
Number of moles ICI = 0.440 moles
Volume = 5.00 L
Kc = 0.110
Balanced chemical equation:
2 ICl(g) ⇌ I₂(g) + Cl₂(g)
Calculation for initial concentration:
[ICl] = 0.440 moles/5.00 L = 0.088 M
[I₂] = 0M
[Cl₂] = 0M
Concentrations at equilibrium:
[ICl] =(0.088 - 2x) M
[I₂] =xM
[Cl₂] = xM
Calculation for Kc:
Kc =0.110 = [I₂][Cl₂] / [ICl]²
0.110 = x² / (0.088 - 2x)²
0.332 = x(0.088 - 2x)
x = 0.332 *(0.088 - 2x)
x = 0.029216 - 0.664x
1.664x = 0.029216
x = 0.0176
Thus, the equilibrium concentrations will be:
[I₂] = [Cl₂] = 0.0176 M
[ICl] = 0.088 - 2(0.0176 ) = 0.0528 M
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The sun is shining today,
O qualitative
quantitative
Answer: Qualitative
Explanation: It isn't talking about the amount, it is talking about the quality so it would be qualitative and not quantitative.
Define soil erosionWhat’s the main cause of soil erosion?Does deforestation have anything to do with soil erosion?
Soil erosion is basically the soil being deteriorated by the gradual impact of water or wind to it, being a very mechanical situation, where water or wind will hit the soil, detaching some particles and making the soil weaker. The main cause will be hits from water or wind. Deforestation will have a huge impact on erosion, since the soil where trees are taken down is more likely to receive impacts from wind or water, if the trees were left in their place, they would be used as a "shield" for the soil
using equation explain what happens when hydrogen peroxide is added to lead
The reaction equation is PbS+4H2O2→PbSO4+4H2O
What is the reaction of lead sulfide and hydrogen peroxide?This is a redox reaction where the hydrogen peroxide (H2O2) acts as an oxidizing agent, and the lead sulfide (PbS) is oxidized to form lead sulfate (PbSO4). The hydrogen peroxide is reduced to form water (H2O). The reaction produces a white precipitate of lead sulfate, which is insoluble in water and can be easily separated from the reaction mixture.
It is worth noting that the reaction between lead sulfide and hydrogen peroxide may not occur spontaneously, and a catalyst may be needed to initiate the reaction.
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Missing parts;
using equation explain what happens when hydrogen peroxide is added to lead sulfide
which of the following incorrectly describes mechanisms of co2 transport? which of the following incorrectly describes mechanisms of co2 transport? just over 20% of co2 is carried in the form of carbaminohemoglobin attached to the heme part of hemoglobin 7-10% of co2 is dissolved directly into the plasma as bicarbonate ions in plasma
The following statement that incorrectly describes mechanisms of CO2 transport is "7-10% of CO2 is dissolved directly into the plasma as bicarbonate ions in plasma."
The transport of carbon dioxide in the blood is done in three ways which are:
Dissolved CO2 Carbaminohaemoglobin Bicarbonate ions in the plasma
Dissolved CO2: This is the smallest fraction of carbon dioxide carried by the blood. Dissolved CO2 combines with water in the blood to form carbonic acid (H2CO3). This reaction is facilitated by an enzyme known as carbonic anhydrase. Carbonic acid dissociates to form H+ and bicarbonate ions (HCO3-).
Carbaminohaemoglobin: Just like oxygen, carbon dioxide can also bind with hemoglobin. Carbon dioxide binds with hemoglobin to form carbaminohaemoglobin. Carbaminohaemoglobin accounts for about 20% of the carbon dioxide transported by the blood.
Bicarbonate ions in the plasma: This is the largest fraction of carbon dioxide transported by the blood. Carbon dioxide diffuses from the tissues into the blood where it combines with water to form carbonic acid. Carbonic acid dissociates to form H+ and bicarbonate ions (HCO3-). The bicarbonate ions diffuse into the plasma where they are transported to the lungs. In the lungs, the bicarbonate ions diffuse back into the red blood cells. The bicarbonate ions are converted back to carbon dioxide, which is then exhaled.
The statement that incorrectly describes mechanisms of CO2 transport is "7-10% of CO2 is dissolved directly into the plasma as bicarbonate ions in plasma." This is incorrect because about 70% of CO2 is transported as bicarbonate ions, not 7-10%. Therefore, the statement is false.
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The mistake in the question's descriptions concerning CO2 transport involves the part of hemoglobin that carbaminohemoglobin binds to (it's the globin part, not the heme part), and the proportion of CO2 carried as bicarbonate ions in the plasma (it's about 70%, not 7-10%).
Explanation:The mechanisms described here for the transport of CO2 in the body are partially incorrect. In the human body, around 20% of CO2 is indeed transported as carbaminohemoglobin, but it binds to the globin part, not the heme part, of the hemoglobin protein. Additionally, the primary way that CO2 is transported is as bicarbonate ions, but these bicarbonate ions constitute around 70%, not 7-10%, of the CO2 carried in the plasma. Therefore, the incorrect descriptions mentioned in the question are that carbaminohemoglobin binds to the heme part of hemoglobin and that only 7-10% of CO2 is carried as bicarbonate ions in the plasma.
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When you walk barefoot across a hot sidewalk, you feel the heat on your feet. Explain what’s happening with the molecules in both the sidewalk and your feet , and which direction thermal energy is moving
When you walk over a sidewalk with barefoot, your feet make contact with the surface, which conducts heat to your feet.Convection drives the majority of heat energy in the atmosphere.
Walking barefoot on warm sand causes what kind of heat transfer?Conduction transfers heat from heated sand to a bottoms of your feet.Heat is transferred by conduction when two items come into contact.Heat energy passes from the warmer to the colder of two materials when their temperatures differ.
What kind of heat transmission involves direct contact?conduction Three methods exist for transferring heat: conduction, convection, and radiation.Energy is transferred directly from one atom to another through conduction.
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HELP true or false: if all the bonds in a molecule are polar the molecule is a polar molecule
Determine the amplitude
or period as requested.
Period of y = 4sin 1/3x
a. 4
b. Pi/4
c. 4pi/3
d. 6pi
Answer:I found out that it is c
Explanation:Find an answer to your question Determine the amplitude or period as requested. Period of y = 4sin 1/3x a. 4 b. Pi/4 c. 4pi/3 d. 6pi.
What fraction of a sample of radioactive material would remain after one half-life?
Answer:
Explanation:o
If the pressure on a gas is decreased by one-half, how large will the volume change be?
Answer:
It will double in size
Explanation:
i hope its correct
Which labels belong in the cells marked X and Y? X: High Y: High X: High Y: Low X: Low Y: High X: Low Y: Low
Answer:
hello your question is incomplete below is the missing part of the question
Keisha makes a table to compare plasmas and solids.
Plasma
Solid
Kinetic energy
X
Density
Y
Which labels belong in the cells marked X and Y? X: High Y: High X: High Y: Low X: Low Y: High X: Low Y: Low
answer : X: High Y:High
Explanation:
The labels that belong in the cells are ; X: High Y:High this because when comparing Plasma and Solids the variables; X and Y have positive correlation hence when X is High, Y will be High as well
Answer:
a
Explanation:
can someone help its not hard. What are the cons of using a cup made of plastic?
Answer:
it could burn if a hot liquid is poured into it and it could break easily
Two or more elements chemically combined make up a ________________ is an example of an element and______________________ is an example of a compound
Answer:
If the pure substance is a compound substance, then it is a compound. Examples include water H2O and table salt NaCl. Therefore, a combination of two or more elements chemically combined is called a compound. Note: A molecule can have two or more atoms of the same element or different elements
Answer:
Two or more elements chemically combined make up a compound. Hydrogen (H) (or any other element in the periodic table) is an example of an element and water (H₂O) is an example of a compound.
If 33.0 grams of hydrogen gas react with 300. grams of oxygen gas, what is the percent yield if an experiment produces 250. grams of water? Use the balanced equation from question 3.
Answer:
can you show us question 3 pls
Explanation:
A chem i meer is sluuyy e TonOWIng Teaccion. CH_(9)+2H S(g) → CS2(9)+4H (9) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 1.8 x 10". The engineer charges ("fills") four reaction vessels with methane and hydrogen sulfide, and lets the reaction begin. She then measures the composition of the mixture inside each vessel from time to time. Her first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time she measures the compositions. reaction vessel compound pressure expected change in pressure CH 6.58 atm of increase o decrease O(no change) 1.39 atm of increase o decrease (no change) 6.61 atm of increase o decrease O(no change) 10.10 atm of increase o decrease O(no change) CHA 6.44 atm of increase o decrease no change) H,S 1.12 atm of increase o decrease (no change) CS2 6.75 atm of increase o decrease O(no change) 10.63 atm of increase o 1 decrease O(no change) CH, 7.96 atm of increase o decrease (no change) 2.21 atm of increase o decrease O(no change) 6.97 atm o 1 decrease O(no change) of increase of increase 9.95 atm o decrease (no change)
A)CH4: Increase, H2S: Increase, CS2: decrease, H2: decrease, B )CH4: Increase, H2S: Increase, CS2: decrease, H2: decrease, c) CH4: no change , H2S: no change , CS2: no change , H2: no change At the temperature the engineer picks, the equilibrium constant K, for this reaction is 1.8 x 10". The engineer charges ("fills") four reaction vessels with methane and hydrogen sulfide, and lets the reaction begin.
A)
Equilibrium Quotient expression is
Qp = p(CS2)*p(H2)^4/p(CH4)*p(H2S)^2
= (6.61^1)*(10.1^4)/(6.58^1)*(1.39^2)
=5.4*10^3
comparing Q and k, since Q is greater than K
reaction will move in backward direction
Answer:CH4: Increase, H2S: Increase, CS2: decrease, H2: decrease
B)
Equilibrium Quotient expression is
Qp = p(CS2)*p(H2)^4/p(CH4)*p(H2S)^2
= (6.75^1)*(10.63^4)/(6.44^1)*(1.12^2)
=1.1*10^4
comparing Q and k, since Q is greater than K
reaction will move in backward direction
Answer:CH4: Increase, hydrogen sulfide: Increase, CS2: decrease,H2: decrease
C)
Equilibrium Quotient expression is
Qp = p(CS2)*p(H2)^4/p(CH4)*p(H2S)^2
= (6.97^1)*(9.95^4)/(7.96^1)*(2.21^2)
=1.8*10^3
comparing Q and k, since Q is equal to K
Answer: methane : no change , H2S: no change , CS2: no change , H2: no change
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describe Bohr’s model of the atom consisted of a central
surrounded by electrons moving in specific
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The Bohr model depicts an atom as a small, positively charged nucleus surrounded by electrons.These electrons travel in circular orbit around the nucleus similar in structure to the solar system,except electrostatic forces rather than gravity provide attraction.Electron orbit around the nucleus resembles that of planets around the sun in the solar system.
The Bohr model was an improvement on the earlier cubic model(1902),the plum pudding model(1904) the saturnine model (1904) the rutherford model (1911) since the Bohr model is a quantum physics based modification of the Rutherford may source combine the two:the Rutherford-Bohr model
Although revolutionary at the time,the Bohr model is a relatively primitive model of the hydrogen atom compared to the valence shell atom.As an initial hypothesis it was derived as a first order approximation to describe the hydrogen atom.Due to its simplicity and correct results for selected systems.
In 913 Bohr suggested that electrons could only have certain classical motions:
Electrons in atoms orbit the nucleus.The electrons can only orbit stably,without radiating in certain orbits at a certain discrete set of distances from the nucleus.These orbit are associated with definite energies and are also called energy shells or energy levels.Electrons can only gives or lose energy by jumping from one allowed orbit to another,absorbing or emitting electromagnetic radiation with a frequency (v) determined by the energy difference of the levels according to the plank relation.En un vaso se han puesto 250 g de alcohol junto con 2 g de yodo, que se disuelven completamente. Calcular la concentración de la disolución en % en masa.
The translation of the question is
250 g of alcohol have been put in a glass together with 2 g of iodine, which dissolve completely. Calculate the concentration of the solution in% by mass?
Answer:
The %mass by mass of the given solution is 0.794%
Explanation:
We are given
Mass of solute(Iodine) = 2g
Mass of the solvent (Alcohol) = 250g
Since the Iodine dissolves completely in Alcohol
Total mass of the solution = 250 + 2 = 252g
the formula of concentration of the solution in % by Mass is given by
%\(\frac{w}{W} = \frac{Mass of the solute*100}{Total mass of the solution}\)
%w/W = \(\frac{2*100}{252}\)
= 0.794%
Therefore the %mass by mass of the given solution is 0.794%
You are working as an engineer at a food packaging plant. You have been assigned to work on a new packaging line for canned lemons. However, you know that lemons have a pH of 2.0. In one paragraph, using your own words, explain what this means, and what concept of chemistry leads you to believe that packaging lemons in cans might not be a good idea.
Answer:
If you began the course with Process Module 2, Solving. Personal and Family Problems, this planning form has already been introduced.
Explanation:
How is a comet different from a star?
Explanation:
Bottom line: Most asteroids are rocky bodies that lie within the asteroid belt while comets are dirty snowballs from the Oort Cloud, with some objects acting like a hybrid of these two types.
Question 9 of 10
Which of the following describes the correct order for using the scientific
method?
O A. A scientist should draw conclusions, then form a hypothesis.
O B. A scientist should conduct an experiment, then state the question.
O C. A scientist should collect data, then state the question.
O D. A scientist should form a hypothesis, then conduct an experiment.
Answer:
its d, forming a hypothesis is always one of the first things you do, and d is the best answer from these 4
Answer:
D. A scientist should form a hypothesis, then conduct an experiment
what does the slope of a distance vs time graph tell you? yes
Answer:
an increase of acceleration or decrease of acceleration
Explanation:
As you move down the periodic table atoms get bigger. This is because.
A particular mountain stream is home to a population of salamanders that are red in
color. In the past year, a second population of salamanders that are dark blue in color
moved into the same stream. Scientists researching the stream have recently discovered young salamanders that are red with dark blue patches on their bodies.
What can the scientists conclude from this evidence?
A). The salamanders are suffering from a bacterial disease.
B)..The salamanders are on the verge of becoming extinct.
C). The salamanders undergo asexual reproduction.
D). The salamanders undergo sexual reproduction.
Answer:
D
Explanation:
The salamanders undergo se×ual reproduction.
What is Se×ual reproduction?
This is defined as the production of new organisms by the combination of genetic information of two individuals of different genders.
Thus results in variations in the offsprings produced which us why the Salamanders had different color patches.
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Which part of the atom is responsible for chemical bonding?
Answer:
valence electrons
Explanation:
The electrons of an atom, in particular valence electrons, are involved in chemical bonding
A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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Is this a scientific model? Use complete sentences to explain why or why not. (5 points)
help quick
Answer:
yes
Explanation:
Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?
#1: A greater percentage of the energy output of the incandescent bulb goes toward heat.
#2: A greater amount of energy is required for the same light output from the LED bulb.
#3: A smaller amount of energy is wasted by the incandescent bulb.
#4: A smaller percentage of the energy output of the LED bulb goes toward light.
A smaller amount of energy is wasted by the incandescent bulb.
Why are incandescent light bulbs less efficient?Because so much energy (90%) is used to produce heat instead of light, incandescent lights are the least efficient of all current lighting options.A typical incandescent source emits around 2% of its energy as usable visible light and the rest 98% as waste heat. Incandescent bulbs have a high likelihood of burning out regularly and need to be replaced annually.Incandescent bulbs are inefficient since they only produce 10% of light and 90% of heat. Additionally, incandescent lights don't last as long as CFLs and LEDs do. A 12-watt LED bulb lasts 25,000 hours, compared to 1,000 hours for an incandescent bulb, 10,000 hours for a CFL, and 15 hours for a CFL.To learn more about incandescent light bulbs refers to:
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Au HSO3 nomenclatura
a. Search engines are the essential software of the computer. Justify these
statements with appropriate examples.
Answer:
Search Engine: A search engine is a kind of website through which users can search the content available on the Internet. For this purpose, users enter the desired keywords into the search field. Then the search engine looks through its index for relevant web pages and displays them in the form of a list. The Internet is a huge source of information & resources and to access the resource from the Internet there are some kinds of software, this software is known as a Search Engine.
Web Browser: The web browser is an example of application software that is developed to retrieve and view information from web pages or HTML files present on web servers. The first web browser was invented by Sir Tim Berners-Lee in 1990 and the very first graphical web browser was developed in 1993 and is named the Mosaic. After that, various web browsers were developed.
A 250 ml sample of saturated a g o h solution was titrated with HCl , and the endpoint was reached after 2. 60 ml of 0. 0136 m HCl was dispensed. Based on this titration, what is the ksp of AgOH?.
The Ksp of AgOH will be "1.98×10^-8"
According to the question,
The chemical reaction is:
AgOH + HCl → AgCL(s) + H2O
As we know the relation,
C₁V₁ = C2V2
(AgOH) (HCI)
By substituting the values, we get
C₁ x 250 mL = 0.0136 × 2.60 mL
C1 = 0.0136×2.60/250 = 0.000141
Now,
AgOH = Ag + OH
AgOH = Ag + OH (s) (s)
hence, The Ksp will be: (s)^2 = (0.000141)² =
1.98 x 10^-8
The Ksp of AgOH will be 1.98×10^-8
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The diagram below shows the structure of an animal cell.
The image of an animal cell is shown with some organelles labeled numerically from 1 to 6. The outer double layer boundary of the cell is labeled 1. A stacked disc like structure is labeled 2. A broad rod shaped structure with an irregular shape inside it is labeled 3. The entire plain section that forms the background of the cell and is within the outer boundary is labeled 4. A small circular shape within the large circular shape is labeled 5. The large central circular shape is labeled 6.
Which number label represents the mitochondria?
1
2
3
6
Mitochondria is a double membrane bound organelle which is found in most eukaryotic organisms. They are found inside the cytoplasm and essentially function as the cells digestive system. Here number 3 represents the mitochondria. The correct option is C.
Mitochondria popularly known as the power house of the cell play an important role in breaking down the nutrients and produce energy rich molecules for the cell. Its size ranges from 0.5 to 1.0 micrometer in diameter.
The mitochondria is a double membraned rod shaped structure which is found both in plants and animals. It comprises of an outer membrane, inner membrane and a gel material called matrix.
Thus the correct option is C.
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