General Chemistry Midterm Exam 1 Study Guide
Ex) 355 km 10^3m 10^3s = 355 m
S 1 km ms ms
Empirical Formula is the smallest ratio of elements.
Ex) C2 H3 O2 is empirical
C4 H6 O4 is not empirical. 2 can be divided out of them all.
Molecular formula is a multiple of the empirical formula.
If you want to learn more check out What is the main cause of disease?
NH3 + O2 NO + H2O
NO is the limiting reactant.
Actual yield * 100%
What is the percent yield of H2O if 138g is produced from 16g of H2 and excess O2? 2H2 + 02 = 2H2O
# g H2O = 16g H2 * 1 mol H2 * 2 mol H2O * 18.02g H20 = 143g H2O 2.02g H2 2 mol H2 1 mol H2O
% yield = actual * 100% = 138g H2O *100% = 96.7%
theoretical 143g H2O We also discuss several other topics like How can exchange theory be used to understand/interpret actors behavior?
If you want to learn more check out What are the five main points that make up dalton's atomic theory?
Grams given * 1 mol * 6.022x10^23 molecules = ?molecules
Molar mass 1 mol
XMass given * 1 mol of X * Ymoles given in formula * Grams of Y = Grams of Y Molar mass of X X moles given in formula 1 mol of Y
Molarity = Moles of solute M = n n = v * M v = n
Volume of solute (L) v M
Molarity = mol M = mol
Electrolytes are compounds that ionize and conduct electricity
Strong acids and bases are strong electrolytes
Weak electrolytes are:
Soluble Elements and compounds
∙ NH4+ Don't forget about the age old question of How the behavior is acquired?
∙ SO4^2 except Sr^2+ , Ba2+ , Hg2^2+ , Pb^2+ ∙ Cl
∙ Br except Ag+ , Hg2^2+ , Pb^2+
Oxidation: loss of one or more electrons
Reduction: gain of one or more electrons
Redox: electrons are transferred
H2 S O4 2(+1) + ? + 4(2) = 0 net charge
+1 ? 2 S = +6
Redox: hydrocarbon + 02(g) CO2(g) + H2O(l) Titration
Net Ionic Equation If you want to learn more check out What is the most effective treatment for panic disorder?
If you want to learn more check out When was the new world discovered?