How much have you memorized?
What is the equation for Density
D = M/V
What is stoichiometry?
Stoichiometry is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data
What is always created in an acid base reaction?
Water
What is an empirical formula?
An empirical formula tells us the relative ratios of different atoms in a compound.
What is the equation for molarity
M = n/v
A SN of 3 represents what electron-pair geometry?
Trigonal Planar
Assuming that a balanced equation was given, what steps would I need to take to convert the mass of a compound (substance A) to the mass of a different compound (substance B) in the same equation?
Mass of Substance A -> Moles of Substance A -> Moles of Substance B -> Mass of Substance B
Consider a weak electrolyte being put into water and a strong electrolyte is put in a separate glass of water. What does the strong electrolyte do better than the weak electrolyte?
The strong electrolyte can conduct electricity better
What is the difference between a molecular formula and an empirical formula
Molecular shows you the actual formula, while empirical shows you the simplest form of the formula
What is the equation for dilutions
Mi x Vi = Mf x Vf
Name 3 polyatomics (include name, formula, and charge)
Answers may vary
What is a limiting reactant and how do you typically find out which reactant is the limiting reactant?
The limiting reactant is the reactant that creates the least amount of product, you would figure this out by finding how much product each reactant would make and compare the two
What is the Bronsted-Lowry definition of an acid and base?
Acids are proton donors and bases are proton acceptors
Consider the compound C6H12O15 what is the empirical is there is one?
C2H4O5
Calculate the molarity of the solution formed by taking 350 mL of 2.25 M FCl and adding 420ml of water.
1.02M
If a molecule has 3 bonded atoms and one lone pair, what is the molecular geometry?
Trigonal Pyramidal
What is the number of moles and the mass (in grams) of chlorine, Cl2, required to react with 10.0 g of sodium metal, Na, to produce sodium chloride, NaCl?
2Na+Cl2→2NaCl2
0.217 mol Cl2
15.43 g Cl2
Write the overall and net ionic equation for the molecular equation 2 HNO3 (aq) + Ca(OH)2(aq) → Ca(NO3)2(aq) + 2 H2O(ℓ)
Overall: 2 H+(aq) + 2 NO3−(aq) + Ca2+(aq) + 2 OH−(aq) → Ca2+(aq) + 2 NO3−(aq) + 2 H2O(ℓ)
Net: H+(aq) + OH−(aq) → H2O(ℓ)
Determine the empirical formulas for a percent composition of 15.8% carbon and 84.2% sulfur
CS2
A 2.00-L bottle of a solution of concentrated HCl was purchased for the general chemistry laboratory. The solution contained 868.8 g of HCl. What is the molarity of the solution?
11.9M
What is the formula for the Rydberg equation
1/λ=RH(1/n2−1/n2)
What is the percent yield of the reaction if a student isolated 25g of a compound following the procedure that would theoretically yield 81g?
Percent yield=31%
What is the name of ALL the strong acids?
Sulfuric, Hydroiodic, Hydrobromic, Nitric, Hydrochloric, Perchloric
Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol.
Mg3Si2H3O8 (empirical formula), Mg6Si4H6O16 (molecular formula)
An aqueous solution called phosphate-buffered saline (PBS) is used in biological research to wash and store living cells. Its ingredients include 10.0 mM Na2HPO4. How many grams of this solute would you need to prepare 10.0 L of PBS?
14.2g