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What is a reason for low yield in the bromination of acetanilide?
A possible reason for low yield in the bromination of acetanilide could be the presence of impurities in the starting material. Impurities can compete for reaction sites or react in unwanted ways, leading to lower yields of the desired product. It is important to start with a pure sample of acetanilide to maximize the yield of the bromination reaction.
Which has the greatest number of atoms- 45 grams of Mg 45 grams of F 45 grams of P or 45 grams of Na?
In order to figure out how many atoms are in each sample, you would take 45, multiply it by 6.02 × 1023, and divided by the atomic mass. Since two of the numbers (45 and 6.02 × 1023) will be constants in all of the samples, the number of atoms will differ in each sample due to the atomic mass. 45 × (6.02 × 1023) / atomic mass in grams = number of atoms You could punch out all the numbers to see which sample has the greatest number of atoms, but it is easier to find the atomic mass for all of them and see which one is smaller. A larger atomic mass will mean the equation will be divided by a larger number, meaning the number of atoms will be smaller. So the smallest atomic mass would yield more atoms.Atomic masses:Mg- 24.3 grams***F- 38.0 gramsP- 31.0 gramsNa- 23.0 grams***Note that fluorine is a diatomic moleculeThe sample of 45 g of sodium (Na) would contain the greatest number of atoms
How many atoms are in 15.6 g of silicon?
To find the number of atoms in 15.6 g of silicon, you would first calculate the moles of silicon using its molar mass (28.09 g/mol). Then, you would use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles to atoms. The final calculation would yield the number of atoms in 15.6 g of silicon.
The actual yield of the given reaction is 14.4what is your percent yield?
To calculate percent yield, you would use the formula: (actual yield / theoretical yield) * 100%. If the actual yield is 14.4 and the theoretical yield is not provided, the percent yield cannot be calculated accurately without the theoretical yield.
Would the percent yield be different if the actual yield and theoretical yield were in units of moles?
No, the percent yield would not be affected by the units of the actual and theoretical yield as long as they are consistent. Percent yield is calculated as (actual yield / theoretical yield) x 100%, where the units cancel out in the division.
How many half lives have elapsed to yield a sample with 125 atoms of C-14?
We have now way of knowing unless we know the initial number of C-14
Why should the maximum percent yield never be above 100?
Because the yield can never exceed the quantity in the original mix. ie if an ore sample contains 3% of a mineral, if that 3% is extracted totally, then the yield is 100% and cannot be more because that's all there is in the sample.
Difference between yield stress and yield strength?
Stress is a measure of the load applied to a sample relative to a cross sectional area of the sample. Strength is a quantification of the samples ability to carry a load. The terms "yield strength" and "yield stress" of a material are usually used interchangeably (correct or not). It is the stress which will just cause the material to plastically deform. If a material yields at 30,000 psi, the yield stress is 30,000 psi. If the part in question has a cross sectional area of 2 square inches, the strength at yield would be 60,000 pounds, but usually we just say the yield strength is 30,000 psi.
What is percentage yield?
The percentage yield indicates how much product is produced in comparison to the maximum mass possible. The percentage of atoms in reactants that create the desired product is known as the reaction's atom economy. Rental yield is the ROI or return of investment that investors get from the property in a year. It calculates how much money you will ultimately earn out of your investment by dividing the yearly rental income by the money invested on the property.
Why is a 20-gram sample of hamburger blended with 180 ml of diluent to yield a 110 dilution before making further dilutions?
The initial 110 dilution was made to decrease the concentration of the hamburger sample in order to make it easier to work with when making further dilutions. This initial dilution allows for a more accurate and precise measurement of the sample, ensuring that subsequent dilutions are consistent and reliable.
What is a reason for low yield in the bromination of acetanilide?
A possible reason for low yield in the bromination of acetanilide could be the presence of impurities in the starting material. Impurities can compete for reaction sites or react in unwanted ways, leading to lower yields of the desired product. It is important to start with a pure sample of acetanilide to maximize the yield of the bromination reaction.
Which has the greatest number of atoms- 45 grams of Mg 45 grams of F 45 grams of P or 45 grams of Na?
In order to figure out how many atoms are in each sample, you would take 45, multiply it by 6.02 × 1023, and divided by the atomic mass. Since two of the numbers (45 and 6.02 × 1023) will be constants in all of the samples, the number of atoms will differ in each sample due to the atomic mass. 45 × (6.02 × 1023) / atomic mass in grams = number of atoms You could punch out all the numbers to see which sample has the greatest number of atoms, but it is easier to find the atomic mass for all of them and see which one is smaller. A larger atomic mass will mean the equation will be divided by a larger number, meaning the number of atoms will be smaller. So the smallest atomic mass would yield more atoms.Atomic masses:Mg- 24.3 grams***F- 38.0 gramsP- 31.0 gramsNa- 23.0 grams***Note that fluorine is a diatomic moleculeThe sample of 45 g of sodium (Na) would contain the greatest number of atoms
How many atoms are in 15.6 g of silicon?
To find the number of atoms in 15.6 g of silicon, you would first calculate the moles of silicon using its molar mass (28.09 g/mol). Then, you would use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles to atoms. The final calculation would yield the number of atoms in 15.6 g of silicon.
HOW TO calculate percentage yield?
actual yield multiply by 100 = % yield theoretical yield
What is the percent yield of 122 grams of product?
If this is the actual yield, real amount produced, then you need the theoretical yield to find the percent yield. % yield = (actual yield / theoretical yield) x 100
How do you calculate percentage yield?
# Determine the limiting reagent; # Calculate the expected yield if the reaction goes to 100% completion. # Divide the actual yield by the expected yield and multiply by 100. The result is percentage yield.
How do you balance CO2 plus H2 to yield CH3OH?
To balance the equation CO2 + H2 ➝ CH3OH, you would need to first balance the carbon atoms, then the hydrogen atoms, and finally the oxygen atoms. In this case, the balanced equation would be: CO2 + 3H2 ➝ CH3OH + H2O.
