How do i calculate the percent yield based on the theoretical yield and the actual yield
Answers
When conducting chemical reactions, it is important to determine how efficient the reaction was. The percent yield is a measure of the efficiency of a chemical reaction.
It is calculated by comparing the actual yield obtained from the experiment to the theoretical yield that would be obtained if the reaction went to completion. The percent yield is expressed as a percentage.
To calculate the percent yield, the first step is to determine the theoretical yield of the reaction. The theoretical yield is the maximum amount of product that can be obtained from the reactants. This can be calculated using stoichiometry and the balanced chemical equation for the reaction.
Once the theoretical yield has been calculated, the next step is to determine the actual yield obtained from the experiment. This is the amount of product that is actually obtained from the reaction. The actual yield can be measured experimentally or estimated using calculations.
Finally, the percent yield is calculated by dividing the actual yield by the theoretical yield and multiplying by 100. This calculation shows the percentage of the theoretical yield that was obtained in the experiment.
For example, if the theoretical yield is 10 grams and the actual yield obtained is 8 grams, the percent yield would be calculated as:
Percent yield = (8/10) x 100 = 80%
In this case, the experiment yielded 80% of the maximum amount of product that could have been obtained if the reaction went to completion.
Overall, the percent yield is an important measure of the efficiency of a chemical reaction. By comparing the actual yield to the theoretical yield, chemists can determine the effectiveness of their experimental techniques and make improvements for future experiments.
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Related Questions
What elements are in water?
1. Hydrogen and Helium
2. Hydrogen and Oxygen
3. Helium and Oxygen
4. Hydrogen and Nitrogen
Answers
Answer:
Hydrogen and Oxygen
Explanation:
The chemical equation for water is H20, meaning Hydrogen and 2 oxygen!
n the Bohr model of an atom (shown), protons are represented in blue, the neutrons are red and the electrons are green. Use your periodic table and determine which of the following atoms is represented by the Bohr model.
Answers
Answer: B
Explanation: Valence electrons are the number of electrons out the outermost shell of the diagram. In this diagram, there is one valence electron. This means that it is highly reactive since the shell is not complete and needs other elements to be able to complete the outermost shell. If this model had a full outermost shell, then it would not be reactive (noble gases).
Answer: B
Explanation:This test it anoying.
11. Carbon tetrachloride is a solvent which is used as a refrigerant and also as a cleaning agent.
CH4 + 4Cl₂ ⇒ CCl4 + 4HCI
Use the balanced chemical equation above to calculate how many grams of carbon tetrachloride
(CCl4) can be produced from reacting 709.0 grams of chlorine (Cl₂).
Molar Mass Cl₂ = 70.906 g/mol
Molar Mass CCl4 = 153.823 g/mol
a. 3.845 g
b. 61.53 g
384.5 g
6153 g
c.3845 g
d.6153 g
Answers
Answer:
3846g of Carbon tetrachloride is in the chemical equation.
Explanation:
The Balanced equation is :
CH4 + 4CL2 -> CCL4 + 4HCL
By observing the equation There are 4 moles of chlorine react to produce 1 mole of carbon tetrachloride.so, should use the mole ratio to tell the moles of carbon tetrachloride produced, and convert the moles of CCL to grams.Molar Mass of CL2 is 70.906 g/molMolar Mass of CCL4 is 153.823 g/molThe mass of CL2 is 709.0 gramsConverting grams to moles ;
Moles of CL2 = Mass / Molar mass
Molles of CL2 = 709.0g/70.906g/mol => 10 moles
Moles of CCL4 = Moles of CL2 / 4
Moles of CCL4 = 10 moles/ 4 => 2.5 moles
Converting moles of CCL4 to grams:
Mass of CCL4 = Moles of CCL4 x Molar mass of CCL4
Mass of CCL4 = 2.5 moles x 153.823 g/mol => 384.5575 grams
Therefore 384.6 grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine.
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what does the S in S8 represent (Select All that Apply)
• An atom of Sulfur
• An isotope of Sulfur
• An allotrope of Sulfur
• A collection of atoms of Sulfur
Answers
Answer:
An atom of Sulfur
Explanation:
i did a Quick search and im trying to get pass the "help a person first"
Answer:
• A collection of atoms of Sulfur
Explanation:
I'll assume the notation is written as \(S_{8}\). A subscript after an element symbol represent the number of individual atoms of the symbol. In this case \(S_{8}\) is telling us we have 8 sulfur atoms that are somehow connected to each other. That is in contrast with 8S, which means we have 8 different sulfur atoms. A chemical formaula, such as \(CH_{4}\) tells us we have a molecule containing 1 carbon atom and 4 hydrogen atoms.
When a volcanic eruption adds new rock to existing land and forms new islands is it considered distractive
Answers
Answer: false
Explanation:
In organic chemistry, a reduction is defined as a decrease in the bonds to oxygen or an increase in bonds to hydrogen. There are many common reagents that can accomplish this type of transformation but the most common reagents in an organic chemistry course are lithium aluminum hydride (LiAlH4) and sodium borohydride (NaBH4). These reagents serve as a source of a hydride anion (H+) and easily reduce many carbonyl compounds. There are certain limitations between the two reagents with LiAlH4 being the more powerful of the two. Sodium borohydride will reduce most aldehydes and ketones with relative ease but will not reduce carboxylic acids, amides, and esters. In order to reduce these carboxylic acid derivatives, LiAlH4 must be used. Another difference between the two reducing agents is in regards to solvents; NaBH4 can be used with aqueous solvents while LiAlH4 must be used in dry aprotic solvents (most commonly ethereal solvents). Sodium borohydride reacts in a concerted fashion as is shown below. The electrons involved in the bond between hydrogen and boron attack the electrophilic carbonyl and as this happens, the electrons involved in the carbonyl bond react with solvent. To an Erlenmeyer flask, dissolve 1.5 g of benzil in absolute ethanol (use about 15-20 mL). This may take a moment and you may need to gently heat the ethanol to get all of the benzil to dissolve. Once the benzil has been fully dissolved, be sure the flask is close to room temperature and add 0.3 g of sodium borohydride in small portions over the course of about 5 minutes. Note any observations of gas being evolved from solution. Allow the solution to react for 15 more minutes while continuing to swirl the solution (failure to wait the entire 15 minutes will result in an incomplete reaction). Next, add dropwise 25 mL of water and cool the flask in an ice bath. Once the flask is cooled, add dropwise concentrated HCl to the mixture until all foaming and reacting abates. Finally, add another 10 mL of water. Filter the solid in the flask using vacuum filtration and rinse any remaining solid in the flask with cold water. Wash the precipitate with three 20 mL portions of cold water. Allow the solid to dry by keeping it under constant suction. Once dry, obtain a melting point and an IR of both the starting material and of the product.
Required:
What reagents we will use for above experiment?
Answers
In the experiment mentioned, the reagent used is Sodium borohydride (NaBH4). Sodium borohydride will reduce most aldehydes and ketones with relative ease but will not reduce carboxylic acids, amides, and esters. NaBH4 can be used with aqueous solvents while LiAlH4 must be used in dry aprotic solvents (most commonly ethereal solvents)
A reduction reaction is defined as a decrease in the bonds to oxygen or an increase in bonds to hydrogen. Reduction reactions are essential to many aspects of chemistry, including life processes and the production of metals.Reducing agents:Reduction agents include materials like sodium borohydride, lithium aluminum hydride, and hydrogen gas. These reducing agents transfer electrons to the reactant, reducing it to a more stable state.Reducing agents are powerful reducing agents that must be handled with care. They must be kept dry and used in a nonaqueous solvent. They can be used to reduce many types of carbonyl compounds to their corresponding alcohols.
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In a nucleic acid hybridization experiment performed to detect exons, an appropriate probe would be.
Answers
To detect exons in nucleic acid hybridization experiment an appropriate probe is single-stranded RNA.
What is meant by single-stranded RNA?Single-stranded RNA (ssRNA) is the most basic type of genetic molecule, constituting the genome of some viruses and, presumably, primitive life-forms. However, the formation of inactive double-stranded RNA (dsRNA) during replication is an innate and unsolved problem with the ssRNA genome.
RNA viruses with single-stranded RNA genomes are referred to as single-stranded RNA viruses. There are two varieties:
1) Single-stranded RNA virus with negative sense
2) Single-stranded RNA virus with positive sense
There are currently eight virus families with single-stranded, positive-sense RNA genomes that infect vertebrates: the families Picornaviridae, Astroviridae, Caliciviridae, and Hepeviridae have non-enveloped capsids, whereas the families Flaviviridae, Togaviridae, Arteriviridae, and Coronaviridae have enveloped capsids.
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The complete question is
"In a nucleic acid hybridization experiment performed to detect exons, the probe a. single-stranded DNA.
b. double-stranded DNA.
c. triple-stranded DNA.
d. single-stranded RNA.
e. double-stranded RNA."
Summarizing your investigation using the Five-Column Chart. For my investigation I use Solid.
Answers
Answer:
The Five-Column Chart is a useful tool for summarizing your investigation. In the case of your investigation involving solids, the chart would include columns for Properties, Examples, Uses, Interactions and Special Characteristics. In the Properties column, you would list the physical and chemical properties of solids, such as shape, texture, melting point, boiling point and solubility. The Examples column would list examples of solids, such as metals, plastics and rocks. The Uses column would list the various uses of solids, such as in construction, engineering and medicine. The Interactions column would list how solids interact with each other, such as through adhesion, cohesion and friction. Finally, the Special Characteristics column would list any special characteristics of solids, such as their electrical conductivity or magnetic properties.
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What happens to the heat energy that leaves the milk?
Answers
Answer:
it gets cold or warm
Explanation:
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What is the mole ratio between carbon dioxide and water in the following reaction: C3H60 + 402 → 3 CO₂ + 3 H₂O
Answers
The mole ratio between the two compounds is 1:1
What is the mole ratio?The mole ratio refers to the ratio of the number of moles of one substance to the number of moles of another substance in a balanced chemical equation. It is used to calculate the amount of one substance that is needed to react with a certain amount of another substance in a chemical reaction.
Mole ratios are an important concept in stoichiometry, which is the study of the quantitative relationships between reactants and products in chemical reactions. They allow us to calculate the theoretical yield of a reaction and to determine the limiting reagent, which is the reactant that limits the amount of product that can be formed.
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Suppose cobalt-60 undergoes a type of radioactive decay that does not
change the identity of the isotope. which type of decay did the isotope
undergo?
a. delta
b. gamma
c. alpha
d. beta
Answers
What percentage of the 20.0g sample does sugar (sucrose) represent? Pls include the percentage sign.
Answers
Answer:
42%
Explanation:
i don't know if it's right but...
A chemical reaction can be concisely represented by a chemical _____. The substances that undergo a chemical change are the_____ The new substances formed are the _____.
Answers
A chemical reaction can be the concisely represented by a chemical equation. The substances that undergo the chemical change are the reactant . The new substances formed are the product .
The chemical reaction is represented by the chemical equation. The substance that will going to react or that undergo the chemical change are called as the reactant. The new substance that are formed by the chemical reaction are called as the product. The balance chemical equation is in which the toms in the reactant side is equals to the product side.
Thus, the substance undergo chemical change is the reactant and the new substance of formed are the products.
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A sample of bleach has a pH of 12.3. What is the pOH of this bleach sample? SHOW YOUR WORK!!!
Answers
Answer:
The pOH of the bleach sample is 1.7.
Explanation:
The pH and pOH are related by the equation:
pH + pOH = 14
To find the pOH of the bleach sample, we can use the given pH value and solve for pOH:
pH + pOH = 14
pOH = 14 - pH
pOH = 14 - 12.3
pOH = 1.7
Therefore, the pOH of the bleach sample is 1.7.
the reactions observed in the photograph to the right reveals a motile, gas producing, lactose fermenter that produces acetyl methyl carbinol in vp broth and has the ability to utilize sodium citrate as its sole source of carbon. the most likely identification is:
Answers
You most likely have such a Gram-positive infection if the organism can use sodium citrate as its only source of carbon and produces acetoin carbinol in the broth.
What effects does sodium have on the body?A little amount of sodium is needed by the human body to convey nerve signals, contract and relieve muscle, and keep the right ratio of water & minerals. We are thought to require 500 sodium mg everyday for these essential processes.
Are bananas high in sodium?Bananas are a crucial part of heart-healthy diets as DASH (Dietary Approaches to Decrease Hypertension), which aims for roughly 4,700 mg of dietary potassium daily and are packed with potassium, fiber, and low sodium.
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What does a chemical equation show that a word equation does not
Answers
Answer: I do believe it shows variables.
Explanation:
In a single, double, or triple bond the shared electron pairs are localized between the bonded atoms. In a resonance hybrid, electrons are ______ or spread out over two or more adjacent atoms. Instead of a double or triple bond between two such atoms, the bond is considered a(n) ______ double or triple bond, with a fractional bond order.
Answers
In a resonance hybrid, electrons are delocalized or spread out over two or more adjacent atoms. Instead of a double or triple bond between two such atoms, the bond is considered a(n) "resonance" double or triple bond, with a fractional bond order.
In a single, double, or triple bond, the shared electron pairs are localized between the bonded atoms. In a resonance hybrid, electrons are delocalized or spread out over two or more adjacent atoms.
Instead of a double or triple bond between two such atoms, the bond is considered a partial double or triple bond, with a fractional bond order.
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You have nitrogen gas (N2) at a pressure of 0.5 atm, a volume of 25000 mL, and a temperature of 300 K, how many grams of nitrogen are present?
Answers
Answer:
About 7.109g
Explanation:
25000mL is the same as 25 liters.
\(PV=nRT \\\\0.5 (25)=n (0.0821) (300) \\\\n\approx 0.508\)
Multiplying this by the molar mass of nitrogen, you get about 7.109 grams of nitrogen. Hope this helps!
Calculate the producers' surplus for the supply equation at the indicated unit price p. HINT (See Example 2.] (Round your answer to the nearest cent.) p = 10 + 2q; = 14 Need Help? Read It
Answers
the producers' surplus at a price of $14 and MC = $6 would be $8.
The first step is to find the quantity supplied at the given price of $14. Substituting p = 14 in the supply equation, we get:
14 = 10 + 2q
4 = 2q
q = 2
Therefore, at a price of $14, the quantity supplied is 2 units. To calculate the producers' surplus, we need to find the area between the supply curve and the price line, up to the quantity supplied. This is a right triangle with base 2 (the quantity) and height (p - MC), where MC is the marginal cost of producing one unit. The marginal cost is not given, so we cannot calculate the exact value of producers' surplus. However, we can say that it will be positive as long as the price is above the marginal cost. If we assume a marginal cost of $6, for example, then the height of the triangle would be 14 - 6 = 8. The area would be (1/2) x 2 x 8 = $8. Therefore, the producers' surplus at a price of $14 and MC = $6 would be $8.
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Which of the following statements
about molecules is true?
A. All molecules contain two or
more different atoms
B. Molecules contain two or more
atoms chemically bonded
together
C. Molecules are a type of
compound
D. Chemical formulas do not give
information about the
structure or composition of a
molecule
Answers
Answer:
A) Is The Correct Answer
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Zinc metal reacts with hydrochloric acid (HCl) to produce hydrogen gas. What best describes this reaction?
Answers
Answer: What best describes the reaction is "A single replacement reaction takes place because zinc is more reactive than hydrogen."
Can someone put their own numbers in this sentence and solve it? Thanks!
A balloon with a pressure of ______ atm and a temperature of ____ Celsius has a volume of ______ mL. The day warms up and increases the temperature to ______ Celsius, which makes the pressure change to _____ mm Hg. What is the new volume of the balloon, in Liters?
Answers
A balloon with a pressure of 1 atm and a temperature of 17° Celsius has a volume of 1000 mL. The day warms up and increases the temperature to 27° Celsius, which makes the pressure change to 1520 mm Hg.What is the new volume of the balloon, in Liters?
The new volume of the balloon is 0.517 L.
By ideal gas law, PV = nRT
P = pressure
V = volume
n = number of mole of gas
R = gas constant
T = temperature
Using ideal gas law, P₁V₁/ T₁ = P₂V₂/ T₂
P₁= 1 atm
V₁ = 1000 mL = 1 L
T₁ = 17° C = 290 K
After the day warms up:-
P₂ = 1520 mm Hg = 2 atm
T₂ = 27° C = 300 K
Put these values in formula, P₁V₁/ T₁ = P₂V₂/ T₂
V₂ = P₁V₁T₂/ T₁ P₂
V₂ = 1 atm× 1 L × 300 K/ 290 K × 2 atm
V₂ = 0.517 L = 517 mL
Hence, the new volume of the balloon is 0.517 L.
The ideal gas equation is formulated as: PV = nRT.
In this equation, P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n is the overall quantity of ideal gas this is measured in terms of moles, R is the universal gas constant, and T is the temperature.
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Two elements are studied. One has atomic number X and one has atomic number X+2. It is known that element X is a halogen. To what group does the X+2 element belong?
Answers
Answer:
Group 1 (or IA)
Explanation:
If element X is a halogen, then it belongs to the group 17 (or VIIA, under a different notation).
For each extra unit of atomic number, the group number increases by 1. That means that the X+1 element would belong to the group 18 (or VIIIA). The X+2 element would thus belong in the group 1 (or IA) one period higher (higher as in numeric value, not as in position in the periodic table).
Ryan has a condition called achalasia, where the muscles in his esophagus refuse to relax and allow food to enter his stomach. Ryan has seen specialists for this issue but his last treatment involving a laparoscopic myotomy did not fix it. In fact, Ryan has seen a substantial increase in the amount of acid reflux he has since the procedure. He hears about an experimental new treatment called POEM that is being tried in a hospital across the country. Ryan sends a letter to the surgeons on staff, asking that he be considered for this treatment. In this situation, what healthcare role is the hospital experimenting with POEM filling?
ANSWERS
1. primary care
2 secondary care
3 tertiary care
4 quaternary care
Answers
The hospital's experimentation with peroral endoscopic myotomy (POEM) filling is part of the tertiary care position.
How is a peroral endoscopic myotomy performed?A procedure called peroral endoscopic myotomy is used to treat swallowing disorders brought on by muscle issues like esophageal spasms.To cut the esophageal muscles, POEM uses an endoscope, a small, flexible tube with a camera that is inserted through the mouth. By cutting the muscles, you can prevent them from tightening up and getting in the way of your ability to swallow.Candidates for POEM include many persons who suffer from symptoms of achalasia and have a poor quality of life. By severing the muscles in the upper stomach, the sphincter, and the bottom part of the oesophagus, the surgery relieves achalasia. This facilitates a wider passageway for food into the stomach.To learn more about achalasia refer :
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what is it called when a substance that is dissolved in liquid
Answers
story that explains an example of a scientific method
Answers
Answer:
I don't understand you question
If the concentration of H3O+ in an aqueous solution is 7.6 × 10-9 M, the concentration of OH- is ________.A) 7.6 × 10-23 MB) 1.3 × 10+8 MC) 6.4 × 10-5 MD) 1.3 × 10-6 ME) 7.6 × 10-9 M
Answers
The concentration of OH- in the aqueous solution is approximately 1.3 × 10-6 M, which corresponds to option D.
To find the concentration of OH- in an aqueous solution when the concentration of H3O+ is 7.6 × 10-9 M, we can use the ion product constant for water (Kw):
Kw = [H3O+][OH-]
Kw is a constant value at 25°C, equal to 1.0 × 10-14.
Given [H3O+] = 7.6 × 10-9 M, we can solve for [OH-]:
1.0 × 10-14 = (7.6 × 10-9)[OH-]
To find [OH-], divide both sides of the equation by the [H3O+] value:
[OH-] = (1.0 × 10-14) / (7.6 × 10-9)
[OH-] ≈ 1.3 × 10-6 M
So, the concentration of OH- in the aqueous solution is approximately 1.3 × 10-6 M, which corresponds to option D.
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which of the following best describes what the blue arrow is pointing to?group of answer choicesthis a dry patch caused by improper mixing of the slurry when pouring the column.this is the stationary phase in column chromatography.this is a desiccant bead.this is an air bubble that is trapped in the column.
Answers
The blue arrow is pointing to an air bubble that is trapped in the column.
The other answer choices do not match with what the blue arrow is pointing to. A dry patch caused by improper mixing of the slurry when pouring the column would not be visible as a single point in the column. The stationary phase in column chromatography is usually a solid or a gel-like material and would not appear as an air bubble. A desiccant bead is typically added to the column to absorb moisture and would not be visible as a single point in the column. Therefore, the correct answer is that the blue arrow is pointing to an air bubble that is trapped in the column.
Components in the mixture interact differently with the stationary phase, causing them to move at different rates through the column and ultimately become separated.
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]
Consider the following intermediate chemical equations.
C(s) +
CO(g) +
O₂(g) → CO(g)
How will oxygen appear in the final chemical equation?
O O2(g) as a product
O O2(g) as a reactant
OO(g) as a product
O 20(g) as a reactant
O₂(g) → CO₂(g)
Answers
In the above intermediate chemical equation, oxygen will appear as follows: O₂(g) as a reactant (option B).
What is a chemical equation?A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.
According to this question, an intermediate chemical equation is presented as follows:
CO(g) + O₂(g) → CO(g)C(s) + O₂(g) → CO₂(g)As observed in the above chemical equation, oxygen will react in its gaseous form i.e. as a reactant.
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a sample of helium gas has a volume of 200.0 mL at 730mm Hg pressure. What pressure, in atm is needed to reduce the volume at a constant temperature to 50.0 mL
Answers
Explanation:
The question had been explained.
