1. 2KCIO3, -- 2KCI + 302
How many moles of O2 will be produced from 2.25 moles of KCIO3?
Answers
Answer:
3.375moles of O₂
Explanation:
The reaction expression is given as;
2KClO₃ → 2KCl + 3O₂
Number of moles of KClO₃ = 2.25moles
Now;
To find the number of moles of O₂ produced we use known number of moles.
So;
2 mole of KClO₃ will produce 3 moles of O₂
2.25moles of KClO₃ will produce \(\frac{2.25 x 3}{2}\) = 3.375moles of O₂
Related Questions
1. The author says that bog bodies were discovered as long ago as the 1600s, but the only ones existing today are those found after the late 1800s. What hap- pened to the earlier bog bodies?
Answers
Answer:
The earlier bog bodies that were discovered in the 1600s might have not been preserved properly due to a lack of knowledge on how to preserve them or a lack of awareness of their significance. It is also possible that they might have decayed and decomposed over time and not survived till the present day. However, the bog bodies found after the late 1800s were preserved and studied extensively due to the increasing awareness and understanding of their historical and archaeological significance.
Explanation:
Hope this helped!! Have a great day/night!!
Which of the three subatomic particles; ____1______ ALWAYS the same, ____2_____changes in isotopes, and _____3____ changes in ions?
Answers
2- Neutrons change in isotopes
3- Electrons change in ions
20 points for answer: D=m/v. Mass=30g and Volume=6mL
Answers
Answer:
density = 5 g/ml
Explanation:
D=m/v. Mass=30g and Volume=6mL
SO solve for D when m = 30 and v = 6
D=m/v
D = 30/6
density = 5 g/ml
once you have a flame that is burning safely and steadily, you can expirment by completly closing the ports at the base of the burner. what effect does this have n the flame
Answers
The flame will start to diminish and eventually go out. Closing the ports restricts the flow of air into the burner, which is necessary for combustion. With limited air supply,
The color and intensity of the flame may change. When the ports are closed, the reduced air supply can cause incomplete combustion. This incomplete combustion can lead to a flame that appears dimmer and may produce a different color, such as a yellowish or orange hue.
The flame may become more unstable. Without a proper air supply, the flame's stability can be compromised. It may flicker, sputter, or even produce soot due to incomplete combustion.
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the form of dna that is the narrowest but having the longest pitch per turn of helix is the
Answers
The B-DNA form of DNA is a right-handed double helix with perpendicular base pairs, having a narrow diameter of 20 angstroms and a pitch per turn of 34 angstroms, enabling efficient packing and stable replication.
The B-DNA form is the most common and well-studied conformation of DNA. It is characterized by a right-handed double helix structure with base pairs arranged perpendicularly to the helix axis.
B-DNA has a narrow diameter of approximately 20 angstroms and exhibits a pitch per turn of about 34 angstroms.
The narrow width is attributed to the presence of the antiparallel sugar-phosphate backbone and the complementary base pairing between adenine-thymine (A-T) and guanine-cytosine (G-C).
This conformation allows for efficient packing of DNA within the cell and facilitates stable base pairing and replication. The B-DNA form serves as a reference structure for DNA studies and is essential for understanding its biological functions.
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The complete question is:
The form of DNA that is the narrowest but has the longest pitch per turn of the helix is known as the B-DNA form.
If you weigh 60 pounds on Earth, your weight is _______on the moon (the moon has 1/6 the gravity of Earth).
Answers
Answer:
10 pounds
Explanation:
If the moon has 1/6 the gravity of earth, divide your weight on earth by 6 to find your weight on the moon
60 / 6 = 10 pounds
Aerosols are lost from the atmosphere through wet or dry _______.
a. precipitation
b. condensation
c. deposition
d. photochemical reaction
Answers
Aerosols are lost from the atmosphere through wet or dry deposition.
The correct answer is C)
Wet deposition refers to the process where aerosols are removed from the atmosphere through precipitation, such as rain or snow. When aerosols are present in the air, they can be captured and brought down to the Earth's surface by falling precipitation.
Dry deposition, on the other hand, involves the direct settling of aerosols from the atmosphere onto surfaces without the involvement of precipitation.
This can occur through gravitational settling, where the particles simply fall out of the air and deposit onto surfaces, or through other mechanisms such as impaction or diffusion.
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What are some signs that a chemical change has happened?
Answers
Answer:
A shift in color and the creation of bubbles are some indicators of a chemical change. The five chemical change conditions: color change, precipitate formation, gas formation, modification of odor, change of temperature.
Why are 6 co2 molecules required during the calvin cycle to make one molecule of glucose?.
Answers
6 co2 molecules required during the calvin cycle to make one molecule of glucose beacuse One carbohydrate molecule requires six rounds of the Calvin cycle to create since it contains six carbon atoms (one for each carbon dioxide molecule fixed).
What is calvin cycle?
The C3 cycle is another name for the Calvin cycle. The process by which the carbon from the carbon cycle gets fixed into sugars is a series of chemical processes. The chloroplast of the plant cell is where it takes place.
Because the main stable intermediate is the 3-carbon compound glyceraldehyde-3-phosphate, C3-type plants—so named because it is their most frequent set of carbon fixation reactions—are observed. The Calvin cycle, which best describes these reactions.
The processes of photosynthesis that utilise the energy accumulated by the light-dependent reactions to create glucose and other carbohydrates molecules are known as the Calvin cycle.
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the chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
Answers
The chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
\(Sucrose + H_{2} O -- > glucose + fructose\)
What is chemical reaction?
In this equation, sucrose and water are the reactants, and glucose and fructose are the products. During the reaction, some of the bonds in sucrose and water are broken and new bonds are formed, resulting in products with chemical properties that are very different from those of the reactants.When molecules in a reactant undergo a chemical reaction, their bonds are broken, and molecules in the product undergo a similar process, new bonds are created, creating a new substance.We are surrounded by chemical processes on a daily basis, whether it be in our bodies as they process food or in the sun as they produce the light we see. Prior to starting with chemical reactions, it's crucial to understand physical and chemical changes.The finest illustration of a physical and chemical transformation is a burning candle. You should light a candle. The candle turns into wax as time goes on, as is evident. The candle will go out if it is covered with a jar.However, A chemical change occurs while the candle burns in the demonstration.
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1. correct for the water vapor present in the wet dry ice experiment and compare with the mean value for the dry ice experiment. does the presence of water vapor affect the result? use the equations in this laboratory to prove why water vapor does or does not have a large effect on the value obtained
Answers
In the wet-dry ice experiment, water vapor is present due to the reaction of dry ice with water. It is important to correct the presence of water vapor when comparing the results to the mean value obtained from the dry ice experiment.
The presence of water vapor can have a small effect on the value obtained in the wet-dry ice experiment, but it should not have a large effect. This is because the mass of water vapor is much smaller than the mass of dry ice used in the experiment.
To prove this, we can use the following equations:
For the wet-dry ice experiment:
Mass of dry ice = Initial mass of dry ice - Final mass of dry ice and water vapor
For the dry ice experiment:
Mass of dry ice = Initial mass of dry ice - Final mass of dry ice
By subtracting the final mass from the initial mass in each experiment, we can determine the mass of dry ice used.
In the wet-dry ice experiment, the final mass includes both the dry ice and any water vapor that has formed. By subtracting the mass of water vapor from the final mass, we can determine the mass of dry ice that was actually used.
If we compare the mass of dry ice obtained in the wet-dry ice experiment (corrected for water vapor) to the mass obtained in the dry ice experiment, we should see a similar mean value.
In summary, the presence of water vapor can have a small effect on the results of the wet-dry ice experiment, but it should not have a large effect due to the much smaller mass of water vapor compared to dry ice. Correcting for water vapor will ensure accurate comparisons to the mean value obtained from the dry ice experiment.
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A biochemist has determined by measurements that there are 3.432 moles of carbon in a sample of epinephrine. how many moles of nitrogen are in the sample?
Answers
There are approximately 0.38133 moles of nitrogen in the sample of epinephrine. Epinephrine is both a neurotransmitter and a hormone, but it acts mainly as a hormone. Epinephrine, also known as adrenaline, plays an important role in your body's fight-or-flight response. It's also used as a medication to treat many life-threatening conditions
To determine the number of moles of nitrogen in the sample of epinephrine, we need the molar ratio between carbon and nitrogen in the compound. Without this information, we cannot provide a direct answer. The molar ratio can be obtained from the chemical formula of epinephrine (C9H13NO3), which indicates that there is 1 nitrogen atom for every 9 carbon atoms.
Using this information, we can set up a proportion:
(Number of moles of nitrogen) / (Number of moles of carbon) = (Number of nitrogen atoms) / (Number of carbon atoms)
Since we know the number of moles of carbon is 3.432, we can solve for the number of moles of nitrogen:
(Number of moles of nitrogen) / 3.432 = 1/9
Cross-multiplying, we get:
(Number of moles of nitrogen) = (3.432 * 1) / 9
Calculating the result:
(Number of moles of nitrogen) = 0.38133 moles
Therefore, there are approximately 0.38133 moles of nitrogen in the sample of epinephrine.
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State whether you would use Raoult's law or Henry's law to perform vapor-liquid equilibrium calculations for each component in the following liquid Mixtures: (For Raoult's law type "R", and for Henry's law type "H" as your answer) (a) water and dissolved nitrogen (b) hexane , octane and decane (c) CO2 and water in club soda or any other carbonated beverage
Answers
(a) Raoult's law for water and Henry's law for dissolved nitrogen.
(b) Raoult's law for hexane, octane, and decane.
(c) Henry's law for CO2 and Raoult's law for water in carbonated beverages.
In vapor-liquid equilibrium calculations, the choice between Raoult's law and Henry's law depends on the nature of the components involved in the liquid mixtures.
(a) For the mixture of water and dissolved nitrogen, we would use Raoult's law for water and Henry's law for dissolved nitrogen. Raoult's law is applicable when the components in the mixture form an ideal solution, meaning they follow ideal behavior and interact with each other in a similar manner. Water is considered an ideal component, and Raoult's law can be used to calculate its vapor pressure in the mixture. On the other hand, dissolved nitrogen behaves non-ideally and its solubility is better described by Henry's law, which states that the solubility of a gas is directly proportional to its partial pressure.
(b) For the mixture of hexane, octane, and decane, Raoult's law would be used. Raoult's law is suitable for mixtures of volatile organic compounds that are miscible with each other. These hydrocarbon compounds exhibit similar behavior and can be treated as ideal components. Raoult's law allows us to calculate the vapor pressures of these components based on their mole fractions in the liquid phase.
(c) In the case of CO2 and water in carbonated beverages, Henry's law is applicable to CO2, while Raoult's law is used for water. Carbon dioxide dissolves in water and follows Henry's law, which relates the solubility of a gas to its partial pressure. Water, being the solvent, is treated as an ideal component, and Raoult's law can be employed to determine its vapor pressure in the presence of dissolved CO2.
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what happens when you add vinegar to baking soda
Answers
Answer:
When baking soda is mixed with vinegar, something new is formed. The mixture quickly foams up with carbon dioxide gas. If enough vinegar is used, all of the baking soda can be made to react and disappear into the vinegar solution.
Explanation:
what would happen if a grasshopper (primary consumer) was removed from a food web ?
Answers
Which of the following correctly illustrates the conservation of mass for the reaction below? I choose B but I’m not sure if I’m correct!
Answers
Answer: A
\(Na(23\times4=92g);O2(16\times2=32g);Na2O(23+23+16)\times2=124\)Explanation: Based on the Law of conservation of mass the total mass of the reactants will equal to the total mass of the products. This happens as matter is not destroyed.
3. Human activity can cause changes in one of the Earth's systems that lead to subsequent alterations in a different system. For example, the combustion of fuel in automobiles can cause elevated levels of atmospheric nitrogen oxides, Reactions within the atmosphere convert nitrogen oxides into nitric acid, which can subsequently return to the Earth's surface as acid rain. Which of the following statements best describes the effect of acid rain on the hydrosphere? O A. Surface water in nearby areas will evaporate at an increased rate. B. Surface water in nearby areas can become polluted. O C. Soil in nearby areas will erode at an increased rate. O D. Soil in nearby areas can become contaminated.
Answers
answer: Surface water in nearby areas can become polluted.
Explanation:
what is the state of matter that takes shape of a container???
Answers
Answer:
Liquid and gas is the matter that takes shape of a container
It can also be called fluid since fluid is distributed into liquid and gas
Explanation:
I hope that is enough for your answer, hope this will help
What is Delta.Hrxn for the overall reaction?
kJ
Answers
Answer:
The enthalpy change of the reaction comes out to be -890 Kj Explanation:To calculate the enthalpy of the reaction divided in multiple steps, we use Hess's law. This law states that the heat absorbed or evolved in a given chemical equation remains same whether the process occurs in one step or several steps.To apply this law, the enthalpy of the chemical equation is treated as ordinary algebraic expression and it can be added or subtracted to form the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes that occur during intermediate reactions.
Explanation:
Answer:
A few definitions:
1. A river delta is a land-form created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or another river that cannot carry away the supplied sediment.
2. The fourth letter of the Greek alphabet ( Δ, δ ), transliterated as ‘d’.
3. a code word representing the letter D, used in radio communication, mostly in the military
4. variation of a variable or function.
5. a finite increment.
This is not a plagiarized passage this is my knowledge and research.
1. Find the resulting concentration, in molars, if 5.0 mL of a 0.20 M stock solution is diluted to 20.0 mL. Give your answer in units of M, but do not include the unit with the answer. Do not use scientific notation. 2. Find the resulting concentration, in molars, if 10.0 mL of a 0.20 M stock solution is diluted to 20.0 mL. Give your answer in units of M, but do not include the unit with the answer. Do not use scientific notation.
Answers
When a 5.0 mL volume of a 0.20 M stock solution is diluted to 20.0 mL, the resulting concentration is 0.05 M. Similarly, when a 10.0 mL volume of the same 0.20 M stock solution is diluted to 20.0 mL, the resulting concentration is 0.10 M.
formula for dilution: C1V1 = C2V2
where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
C1 = 0.20 M, V1 = 5.0 mL, V2 = 20.0 mL
Let's plug these values into the formula:
(0.20 M)(5.0 mL) = C2(20.0 mL)
1.0 M mL = C2(20.0 mL)
Now, we can cancel out the mL units:
1.0 M = C2(20.0)
To solve for C2, divide both sides by 20.0:
C2 = 1.0 M / 20.0
C2 = 0.05 M
When 5.0 mL of a 0.20 M stock solution is diluted to 20.0 mL, the resulting concentration becomes 0.05 M.
Using the same formula, we can determine that when 10.0 mL of a 0.20 M stock solution is diluted to 20.0 mL, the resulting concentration is 0.10 M
C1V1 = C2V2
C1 = 0.20 M, V1 = 10.0 mL, V2 = 20.0 mL
Let's plug these values into the formula:
(0.20 M)(10.0 mL) = C2(20.0 mL)
2.0 M mL = C2(20.0 mL)
Now, we can cancel out the mL units:
2.0 M = C2(20.0)
By dividing both sides of the equation by 20.0, we can solve for C2:
C2 = 2.0 M / 20.0
This simplifies to C2 = 0.10 M.
Upon diluting a 10.0 mL portion of a 0.20 M stock solution to a total volume of 20.0 mL, the resulting concentration is determined to be 0.10 M.
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PLS HELP I NEED ASAP
what is the slowest speed for an object to escape the gravitational attraction of a celestial body (planet, moon, etc.)?
Answers
Answer:
the escape velocity
Explanation:
To do this, your rock has to go very fast – more than 11 kilometers per second. This velocity is called the escape velocity, the speed an object must achieve in order to overcome the gravitational attraction of a celestial body (be it a planet, a star, or a galaxy) and escape into space
found it online, lol better then nothing
what mass of water is produced by the reaction of of ethanol?
Answers
Multiply the moles of ethanol by 3 to obtain the moles of water produced. Finally, multiply the moles of water by the molar mass of water to determine the mass of water produced.
:
To calculate the mass of water produced by the combustion of ethanol, we need to know the mass of ethanol consumed. Let's assume we have a known mass of ethanol, m_ethanol.
Using the balanced equation for the combustion of ethanol: C2H5OH + 3O2 -> 2CO2 + 3H2O, we can determine the molar ratio between ethanol and water.
The molar mass of ethanol (C2H5OH) is 46.07 g/mol, and the molar mass of water (H2O) is 18.02 g/mol.
To find the moles of ethanol consumed, we divide the mass of ethanol (m_ethanol) by its molar mass:
Moles of ethanol = m_ethanol / molar mass of ethanol
Using the molar ratio between ethanol and water from the balanced equation (3 moles of water per mole of ethanol), we can calculate the moles of water produced:
Moles of water = 3 * Moles of ethanol
Finally, to find the mass of water produced, we multiply the moles of water by its molar mass:
Mass of water = Moles of water * molar mass of water
By substituting the values into the equations and performing the calculations, we can determine the mass of water produced.
Note: The specific value of m_ethanol is required to provide an exact mass of water produced.
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Which of these can be used as an inert electrode?
copper
platinum
silver
zinc
Answers
Answer:
I believe it is platinum
Explanation:
I think it is, haha
Answer:
zinc
Explanation:
kwkejnrkewnrkwe
In the molecular formula 4Al(OH)₃ - the number "4" is the ___________ and it tells you_______
1.Coefficient; how many atoms of aluminum there are
2.Coefficient; how many molecules of Aluminum hydroxide there are
3.Subscript; how many atoms of aluminum there are
4.Subscript; how many molecules of aluminum hydroxide there ar
Answers
Answer:
2.coefficient how many molecules of Aluminum hydroxide there are
Lily replicates an experiment that found that the number of calories in a particular food is 50 kcal. She obtained data from
five trials: 50 kcal 72 kcal, 50 kcal, 12 kcal, and 50 kcal. Which best desribes her data results? A. accurate B. incorrect C. invalid D. precise
Answers
Answer:
invalid
Explanation:
Just imagine doing this experiment MULTIPLE TIMES and one of the trials you get 72 Kcal while in another u get 12kcal. It doesn't make sense. Somewhere in the experiment she went wrong. So its invalid
A gas at a constant pressure occupies 2.24 L at 52 C. If the sample is cooled United it takes up 1.66 L what is the new temperature?
A. 0.01 K
B. 0.01 C
C. 32 C
D. 241 K
PLS SHOW WORK
Answers
Answer:
D is the answer!Explanation:
Using Charles's Law to solve this question: V1/T1 = V2/T2
V1 = 2.24L
T1 = 52C (covert to Kelvin by plus 273.15) = 325.15K
V2 = 1.66L
T2 = ?
V1/T1 = V2/T2 must change to V2×T1/V1 = T2
1.66 x 325.15/2.24 = V2
V2 = 240.96K ≈ 241K
N2O4 ⇌ 2NO2
for the following reaction at 373 K, Kc = 0.36. If initial concentration of N2O4 is 0.1 mol dm^-3, what is the equilibrium concentration of NO2? (Is there a way to solve this without using quadratics?)
Answers
Okay, let's solve this step-by-step without using quadratics:
1) The equilibrium constant Kc = 0.36 means the equilibrium lies to the left. So there will be more N2O4 than NO2 at equilibrium.
2) The initial concentration of N2O4 is 0.1 mol dm^-3. Let's call this [N2O4]initial.
3) At equilibrium, the concentrations of N2O4 and NO2 will be [N2O4]equil and [NO2]equil respectively.
4) We know the equilibrium constant expression for this reaction is:
Kc = ([NO2]equil)^2 / [N2O4]equil
5) Setting this equal to 0.36 and plugging in 0.1 for [N2O4]initial, we get:
0.36 = ([NO2]equil)^2 / (0.1 - [NO2]equil)
6) Simplifying, we get:
0.036 = [NO2]equil^2
7) Taking the square root of both sides, we get:
[NO2]equil = 0.06 mol dm^-3
So the equilibrium concentration of NO2 is 0.06 mol dm^-3.
Let me know if you have any other questions! I can also provide a more step-by-step explanation if needed.
A student performs an experiment to study how sound waves are transmitted by placing a ringing buzzer inside a bell jar and sealing the jar. The student then connects the bell jar to a vacuum pump to remove the air from inside of the jar. The table shows the student’s observations before and after removing the air from the bell jar.
What can be concluded from the experiment?
A. Sound waves are transverse waves.
B. Sound waves do not transmit through material mediums.
C. Sound waves do not carry energy when they are transmitted.
D. Sound waves transfer energy through the vibration of particles in mediums.
Answers
Answer:
D. Sound waves transfer energy through the vibration of particles in mediums.
Explanation:
It can be concluded from the experiment that sound waves will only propagate through vibration of particles in mediums.
The particles of the medium is the air.
This type of wave is called a mechanical wave. A mechanical wave is one that requires material medium for their propagation.Option A ; Sound waves are transverse waves; while this might be true or not, we cannot ascertain that through this experiment described.
Option B: this negates the conclusion that should be drawn from the experiment.
Option C: we cannot draw this sort of conclusion from such an experiment as this.
Therefore, the right choice is that, sound waves transfer energy through the vibration of particles in mediums.
2. Which statement about bonding is correct? (1 point)
O Forming bonds requires energy and is endothermic.
O Breaking bonds releases energy and is endothermic.
O Breaking bonds requires energy and is exothermic.
O Forming bonds releases energy and is exothermic
3. fluorine is the most electronegative element on the period table, which means that, in an iconic bod, fluorine will always (1 point)
O share electrons unequally with other elements
O share electrons equally with other elements
O give electrons away to other elements
O pull electrons away from other elements
Answers
Answer:
Forming bonds releases energy and is exothermic.
pull electrons away from other elements
the more electronegative an element is the more greedy it is for electrons, florine has a score of 3.98 which is the highest on the table. Meaning that it will always take the electrons from the other element
2. O Breaking bonds releases energy and is endothermic.
3. O pull electrons away from other elements
Endothermic v/s Exothermic:An endothermic reaction occurs when energy is absorbed from the surroundings in the form of heat. While an exothermic reaction is one in which energy is released from the system into the surroundings.In an endothermic reaction, the reaction mixture absorbs heat from the surroundings. Therefore, the products will have a higher energy than the reactants and ΔH will be positive. In an exothermic reaction, the reaction mixture releases heat to the surroundings.Fluorine is a member of Halogen family having one electron less to acquire stable noble gas configuration. Thus in order to attain one more electron it will gain one electron so as to be stably complete.
Thus the correct options are given above.
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Which equation is derived from the combined gas law?
StartFraction V subscript 1 over T subscript 1 EndFraction equals StartFraction V subscript 2 over T subscript 2 EndFraction.
StartFraction V subscript 1 over T subscript 2 EndFraction equals StartFraction V subscript 2 over T subscript 1 EndFraction.
V subscript 1 T subscript 1 equals P subscript 2 T subscript 2.
P subscript 1 V subscript 1 T subscript 1 equals P subscript 2 V subscript 2 T subscript 2.
I put "A" as my answer and got it correct....so V1/T1 = V2/T2 is your answer :)
Answers
Answer:
if you are correct then my dude... you are correct
Correct = A)
Explanation:
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no reason in saying "hope this helps" lol
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-- XxFTSxX
Answer:
The answer is A
Explanation:
I got 100% on the Quiz on Edge 2021