0
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
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
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)
Nicotin contains 74.03 percent C 8.70 percent H and 17.27 percent N by mss The mass of nicotine is 162.23gmol What is the empirical formula and molecular formula for nicotine?
http://wiki.answers.com/Q/Nicotin_contains_74.03_ percent_C_8.70_percent_H_and_17.27_percent_N_by_mass_The_mass_of_nicotine_is_162.23gmol_What_is_the_empirical_formula_ and_molecular_formula_for_nicotine
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 is the molecular formula of a compound containing 89 percent cesium Cs and 11 percent oxygen O with a molar mass equals 298 gmol?
Cs2O2
What is the formula for calculation mass and mass percent?
gaga si cherywel
What is the formula of the percent of volume and percent of mass?
% of volume = 100*(volume of substance that you are interested in)/(total volume) % of mass = 100*(mass of substance that you are interested in)/(total mass).
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 information is needed to calculate the percent composition of a compound?
The formula of the compound and the Atomic Mass of its elements.
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
Explain why the percent composition of certain compounds are not sufficient to determine the compounds molecular formulas?
Because unlike the empirical formula, the molecular formula does not have to be the simplest ratio.If by chance you are given the percent composition of the elements in a substance, you could calculate the empirical formula and then the empirical formula's mass. However, the molecular formula equation is molecular formula= (empirical formula)n, where n is the mass of the molecular formula divided by the mass of the empirical formula. You would, therefore, need to know the mass belonging to the molecular formula, which you are not given.
What is the percent of sulphur in ammonium sulphate?
The formula of ammonium sulphate is (NH4)2SO4, showing that each formula mass contains one sulphur atom. The formula mass of ammonium sulphate is 132.13, and the gram atomic mass of sulphur is 32.06. Therefore, the percent by mass of sulphur in ammonium sulphate is 100(32.06/132.13) or 24.26, to the justified number of significant digits.
What is the formula for the percent by mass of a compound?
((mass of element)/(mass of compound))*100
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
What is the empirical formula of an oxide of Bromine which contains 71.4 percent Bromine by mass?
BrO2
