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9 half lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14.

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Q: How many half-lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14?
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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.


If the actual yield of Mg3N2 is 47.87 g and the theoretical is 50.26 g What is the percent yield?

Percent yield = Actual Yield / Theoretical Yield * 100 hope that helps :)


How is percent yield calculated?

Actual


Is actual yield greater or less than the theoretical yield?

The percent yield is the ratio of the actual yield to the theoretical yield. A mole ratio is a conversion factor derived from the coefficient of a balanced chemical equation interpreted in terms of moles.

Related questions

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.


How long does it take for a nuclear bomb to clear up?

That is complicated:Depends on yield and height/depth of burst.Depends on several features of bomb design.Depends on halflives of radiological contaminants produced.Depends on decontamination effort attempted and degree of success.Depends on weather.


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.


HOW TO calculate percentage yield?

actual yield multiply by 100 = % yield theoretical yield


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.