Concept explainers
Interpretation:
The empirical formula of lactic acid is to be determined with given mass of sample, carbon dioxide, and water.
Concept introduction:
Empirical formula is the simplest formula of any compound when written in the least possible whole number without altering the relative number of atoms.
The molecular mass of any compound is the sum of the
When any hydrocarbon has completely reacted with oxygen, then the product formed contains
Molar mass is calculated by adding masses of each and every element multiplied by their number of atoms (given in subscript). Its S.I. unit is
The number of moles is defined as the ratio of mass to the molar mass:
Here,
The mass of compound can be calculated as
Here,
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Chemistry
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- l-Dopa is a drug used for the treatment of Parkinson’s disease. Elemental analysis shows it to be 54.82% carbon, 7.10% nitrogen, 32.46% oxygen, and the remainder hydrogen. Determine l-dopa’s empirical formula. The molar mass of l-dopa is 197.19 g/mol. Determine its molecular formula.arrow_forwardYou have a pure sample of apholate, C12H24N9P3, a highly effective commercial insecticide. Calculate the molar mass of apholate. Calculate the mass of N in 100. g apholate. A sample containing 250.0 mg apholate is sprayed on an agricultural field. Calculate the mass of phosphorus in this sample of apholate; express your result in grams. Calculate the number of phosphorus atoms in this sample of apholate.arrow_forwardAllicin is responsible for the distinctive taste and odor of garlic. Its simple formula is C6H10O2S. How many grams of sulfur can be obtained from 25.0 g of allicin?arrow_forward
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