3. Chemical Reactions

Empirical Formula

Multiple Choice
Which represents the empirical formula for $A_{3} B_{9}$ ?
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Multiple Choice
What is the empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen by mass?
Open Question
Which formula is both a molecule and an empirical formula
Open Question
What is the empirical formula of a compound that contains 75% Ag and 25% Cl by mass?
Multiple Choice
A 45.2 mg sample of phosphorus reacts with selenium to form 131.6 mg of the selenide. Determine the empirical formula of phosphorus selenide.
Open Question
A substance has a molecular formula of c8h10n4o2. the empirical formula is -
Open Question
Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.
Open Question
Determine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.
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Multiple Choice
Given that the pseudoformula of ascorbic acid is C_{3.407}H_{4.53}O_{3.406}, what is its empirical formula?
Multiple Choice
Which of the following pairs of compounds have the same empirical formula?
Open Question
Based on the mole ratio you determined in part c, what is the empirical formula of this compound?
Open Question
Use subscripts to represent the number of each type of atom or ion in a molecule.
Open Question
Which of the following is an empirical formula
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Open Question
Which of these is an empirical formula
Open Question
A compound consists of 37.51 g C, 4.20 g H, and 58.29 g O. What is the empirical formula?