Percent abundance can be calculated by finding the percentage of an isotope compared to another isotope of an element using its relative atomic mass. This is an algebraic process and depends upon several measurements.
Because there are various isotopes of an element, its atomic weight is a calculation of the atomic masses and relative abundances of each isotope of that element. Using algebra, the atomic weights and respective relative abundance percentages of each isotope are multiplied and then added together to find the atomic weight of the element in question.
To accurately measure the atomic mass of an element, a mass spectrometer is used. In this instrument, atoms are positively ionized, accelerated and then deflected by a magnetic field. The amount of deflection is partially determined by the element's atomic mass.
Learn MoreFTE can be calculated by dividing the total labor hours for exactly one year by the number 2,080, which represents how many hours one full-time employee works in a year. The acronym FTE stands for full-time equivalent and is the equivalent of one employee working full-time at a company.
Full Answer >A $15 shirt would cost $12 if it were 20 percent off. The 20 percent discount would come to $3, and subtracting $3 from $15 gives $12.
Full Answer >When purifying a substance in chemistry, use (collected mass/starting mass)*100 to calculate percent recovery. This formula is also commonly stated as (pure product recovered/crude material used)*100.
Full Answer >Reverse percentage can be calculated by dividing a known amount by 1 minus the discount rate or 1 plus the tax rate. Such calculations are helpful in determining the original price of a sale item purchased or the pretax price of a transaction already done.
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