Balancing Equations
The coefficient for H2O in the following equation:
__H2 + __O2 --> __H2O
What is 2?
This tool is needed to calculate percent composition.
What is a periodic table (for atomic masses)?
This is the simplest whole-number ratio of atoms in a compound.
What is an empirical formula?
Reaction where one substance breaks down into two or more products.
What is a decomposition reaction?
Ms. Ayala's son's name.
What is Roman?
A small number written slightly below a chemical symbol in a formula, indicating the number of atoms of that element.
What is subscript?
The percent by mass of hydrogen in H₂O.
What is about 11%?
The empirical formula of C₆H₁₂O₆.
What is CH₂O?
2Na + Cl₂ → 2NaCl is this type of reaction.
What is a synthesis reaction?
What is Texas State University?
This fundamental principle states that in a chemical reaction, the total mass of the reactants equals the total mass of the products.
What is law of conservation of mass?
The percent of oxygen in CO₂ (molar mass = 44.01 g/mol).
What is about 72.7%?
A compound contains 80% C and 20% H by mass. What is its empirical formula?
What is CH₃?
A reaction that always produces CO₂ and H₂O.
What is a combustion reaction?
Ms. Ayala's go-to drink
What is coffee?
Balance: __Fe + __O₂ → __Fe₂O₃
What is 4Fe + 3O₂ → 2Fe₂O₃?
Formula for calculating percent composition.
What is (mass of element / molar mass of compound) × 100?
What must be known in order to calculate a molecular formula from an empirical formula?
What is the molar mass of the compound?
Zn + CuSO₄ → ZnSO₄ + Cu is what kind of reaction?
What is a single replacement reaction?
Ms. Ayala's favorite color.
What is purple?
This many atoms of oxygen are present on the reactant side of the balanced equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
What is 4 oxygen atoms?
Calculate the percent composition of nitrogen in NH₃ (molar mass = 17.03 g/mol).
What is about 82.3%?
A compound is 52.2% C, 13.0% H, and 34.8% O. Find the empirical formula.
What is C₂H₆O?
Reaction type where ions in two compounds switch places.
What is a double replacement reaction?
Ms. Ayala's favorite part about being a teacher.
What is all the breaks?