Suppose You Are Given the Percent by Mass of the Elements

question 106

Multiple Choice

Suppose you are given the percent by mass of the elements in a compound and you wish to determine the empirical formula.Which of the following is true?

• A)You must convert percent by mass to relative numbers of atoms.
• B)You must assume exactly 100.0 g of the compound.
• C)You must divide all of the percent by mass numbers by the smallest percent by mass.
• D)You cannot solve for the empirical formula without the molar mass.
• E)At least two of the above (A-D)are true.

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