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How many half lives have elapsed to yield a sample with 125 atoms of C-14?
Wiki User
∙ 7y ago
We have now way of knowing unless we know the initial number of C-14
Wiki User
∙ 7y ago
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Why is there low yield in an elimination reaction?
Many times your are removing heavy atoms during an elimination reaction.
What is the theoretical yield of magnesium chloride if 50.6 grams sample of magnesium hydroxide is reacted with 45.0 grams of hydrochloric acid?
Magnesium chloride: 81,95 g are obtained.
How is percent yield caculated?
Percent yield = (actual yield/expected 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.
In a reverse reactionproducts are formed from reactants and reactants are formed from products When they yield the same amount?
Of material. They will need to have the same amount of atoms present for this process to work out correctly.
How many half-lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14?
9 half lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-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.
Why is a 20-gram sample of hamburger blended with 180 ml of diluent to yield a 110 dilution before making further dilutions?
20 grams is equivalent to 20ml. 20ml(sample) +180ml(diluent) = 200ml. 20ml is 10th part of 200ml. Ratio will yield a 1:10 dilution.
Why is there low yield in an elimination reaction?
Many times your are removing heavy atoms during an elimination 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
When an element splits the process would yield?
... atoms of at least one other element than the one that is split.
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.
What is the theoretical yield of magnesium chloride if 50.6 grams sample of magnesium hydroxide is reacted with 45.0 grams of hydrochloric acid?
Magnesium chloride: 81,95 g are obtained.
Why nuclear bomb is chemical change?
It is a nuclear change not a chemical one. The energy for the yield originates from the nuclei of the atoms and the electrons (where chemical energy resides) are uninvolved in the process.
What is longer a milliliter or a hectoliter?
A hectoliter will yield 1E5 times more material than a milliliter, and would therefore make a line of atoms 1E5 times longer.
HOW TO calculate percentage yield?
actual yield multiply by 100 = % yield theoretical yield
