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((mass of element)/(mass of compound))*100
Wiki User
∙ 14y ago
Wiki User
∙ 6y agoFor a compound AB:
Concentration of A (%) = Atomic weight of A x 100/Molecular mass of AB
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What is the empirical formula of a compound that contains 75 percent Ag and 25 percent Cl by mass?
AgCl
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound?
ch2o and c6h12o6
The empirical formula of a compound is CH2O The molar mass of the compound is 180 g What is the molecular formula for this compound?
C6h12o6
What information is needed to find the percent of composition?
- The percent composition of a compound is established after the chemical analysis of this compound and the knowledge of the chemical formula.- If you know the chemical formula you need to know the atomic weights of the components to calculate the percent composition.
What is the formula mass for the compound BNO33?
The formula mass for boron nitrate is 197 grams per mole.
What information is needed to calculate the percent composition of a compound?
The formula of the compound and the Atomic Mass of its elements.
If a compound containing chromium and silicon has 73.52 mass percent chromium what is its empirical formula?
Cr3Si2 is the empirical formula for a compound containing chromium and silicon an has 73.52 mass percent chromium.
In which compound is the percent composition by mass of chlorine equal to 42 percent?
HClO3 (gram-formula mass = 84 g/mol)
What is the empirical formula of a compound that contains 20 percent calcium and 80 percent bromine by mass?
CaBr2 :)
What is the empirical formula of a compound that contains 75 percent Ag and 25 percent Cl by mass?
AgCl
Does The element with the largest subscript in a formula have the largest percent by mass in the compound?
Sometimes, but not necessarily: The largest percent by mass in a compound is that of the element for which the product of the subscript and the atomic weight is highest. For example, there is more carbon than hydrogen by mass in CH4.
What additional information is needed to calculate the molecular formula from the percent by mass of each element in a compound?
The number of atoms of one element in the compound
What is the formula for mass percent?
mass % of element X = mass of element X ____________________ X 100 total mass of compound or mass of solute _____________________________ X 100 mass of solute + mass of solvent
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound?
ch2o and c6h12o6
Percent age of nitrogen in urea and ammonia?
it can be calculated using the formula percentage composition of N =Gram molecular mass of nitrogen in the compound/ Gram molecular mass of compound *100
What are the sum of atomic masses of all atoms formula for a compound called?
It is called the molar mass of that compound. In other words, the total mass of all of the elements in a compound is equal to one mole of that compound.
How do you know when to solve for a empirical formula?
If it tells you to find the empirical formula when percent composition is given or if the mass of each element is given in a specific compound.
