Vocabulary
What is a coefficient?
The numbers you can change while balancing equations, found in the front of reactants or products.
N₂ + 3H2 → 2NH3
How many moles of hydrogen are needed to completely react with 2 moles of nitrogen?
6 mol H2
2KClO3 → 2KCl + 3O2
How many grams of KCl are produced if 25g of KClO3 decompose?
15g KCl
What does Ms. Lamar's mom do for a job?
She's the librarian here at WHS!
What is stoichiometry?
Converting between a mol/g of one compound to a mol/g of another compound using mole ratios in a balanced equation.
2KClO3 → 2KCl + 3O₂
How many moles of oxygen are produced by the decomposition of 6 moles of KClO3?
9 mol O2
N₂ + 3H₂ → 2NH3
How many grams of hydrogen are necessary to react completely with 50.0g of nitrogen in the above reaction?
10.7g H2
How long has Ms. Lamar worked at WHS?
This is my 2nd year
What is a mole ratio?
The ratio of coefficients in a balanced equation, used to convert between mols of one compound to mols of a different compound.
Zn + 2HCl→ ZnCl₂ + H₂
How many moles of hydrogen are produced from the reaction of 3 moles of zinc with an excess of hydrochloric acid?
3 mol H2
N₂ + 3H₂ → 2NH3
How many grams of ammonia are produced with 50.0 grams of nitrogen?
60.7g NH3
Where did Ms. Lamar go to college?
University of New Hampshire (2 years) and then Stonehill College (2 years)
What is a limiting reactant?
The reactant that is used up first in a chemical reaction, determining how much product can be made.
C3H8 + 5O2→ 3CO₂ + 4H₂O
How many moles of oxygen are necessary to react completely with 4 moles of propane (C3H8)?
20 mol O2
2AgNO3 + BaCl2 → 2AgCl + Ba(NO3)2
How many grams of silver chloride are produced from 5.0g of silver nitrate reacting with an excess of barium chloride?
4.2 g AgCl
Where did Ms. Lamar graduate from high school?
Attleboro High School
What is an excess reactant?
K3PO4 + Al(NO)3→ 3KNO3 + AlPO4
How many moles of KNO3 are produced when 2 moles of K3PO4 react with 2 moles of Al(NO)3?
6 mol KNO3
2AgNO3 + BaCl2 → 2AgCl + Ba(NO3)2
How much barium chloride is necessary to react with 5.0g of silver nitrate?
2.5g BaCl2
What did Ms. Lamar study in college?
Environmental science