Sites to help you with this work: Khan Academy (google Khan Academy, type chemistry in the search box and click, then click Chemistry Khan Academy and select the topic you need help with) www.chemistrylecturenotes.com - has a list to select what you need help with, good examples, uses similar terminology CHEMTUTOR – has a list to select what you need help with, good example but uses somewhat different terminology that I have used You can also email me at spolewski@bdcs.org and I will try to answer your questions. I check about email once every day or so during the summer Summer Assignment AP Chemistry Name the following compounds. FeCl3 NO2 Al2(SO4)3 (NH4)2SO4 TiO MgSO3 HClO3 HBr CS2 P2O5 Write the formula for the following compounds. Cobalt (III) nitrate Barium hydroxide Dihydrogen monoxide Nitric acid Name ___________________________ Hydrochloric acid Copper (I) sulfite Potassium nitride Aluminum oxide Sulfurous acid Dinitrogen pentoxide Balance the following equations. C3H8 + O2 CO2 + H2O Al + O2 Al2O3 C4H8O + O2 CO2 + H2O KI + F2 KF + I2 CO2 CO + O2 C3H7OH + O2 CO2 + H2O Ba3(PO4)2 + NaCl BaCl2 + Na3PO4 x FeO + O2 Fe2O3 Li3N + NiCl2 LiCl + Ni3N2 Al + HCl AlCl3 + H2 Stoichiometry Balance the following equations and solve for the products or reactants as requested. NaI + F2 NaF + I2 Starting with 25.0 grams of NaI, how many grams of products can be made? CH4 + O2 CO2 + H2O Starting with 200. g of CH4 and 400. g of O2, how much of each product can be made? Gas Laws Initially, the pressure, volume and temperature of a gas are 567 torr, 256 mLs and 25℃ repectively. What is the final volume if the pressure is decreased to 423 torr and the temperature is increased to 56℃? If the original temperature and volume are 80.℃ and 67 liters, what will the new temperature be if the volume is increased to 123 liters? What will be the pressure of a 0.0245 g sample of nitrogen gas if the temperature is 45℃ and the volume is 3.000L? Molarity What is the molarity of a solution of 4.67 g of NaNO3 in 500 mLs of water? How many grams of K2S03 are needed to make 250 mLs of a 0.145 M solution of K2SO3? Acids, Bases and pH What is the pH of 0.0156M HCl? What is the pOH of this solution? What is the pH of a solution that is 0.0067M KBr? What is the pOH of this solution? Is this solution an acid or a base? What is the pOH of a solution that has a hydrogen ion concentration of 5.6 x 10-9 M? Are the following compounds ionic or covalent? Use the electronegativity chart and show your work. KBr N2O CuCl2 Na2S CO SO3 V2O5 AgCl SiO2 Mg3N What is the difference between intramolecular forces and intermolecular forces? What are the intramolecular forces and how do they each work? What are the intermolecular forces and how do they each work? For the following compounds, describe which intra and intermolecular forces are at work and why they are the ones working in each example. CO2 H2O LiCl Ag Na3N CCl4 (NH4)2SO4 Draw the Lewis Structure for each of the following compounds or ions, and list their molecular and electron geometries, bond angles, polarity and resonance. NO2 CH4 BH3 NH3 SF6 PCl5 BeCl2 SO3 H2S NH4+1 NO3-1 Which of the following atoms is bigger? Te or Ge B or Na O or Po Si or Pb Tl or At Rn or Ra Kr or K Na or Ne Li or N I or Sr Which of the following ions is bigger? P or K N or F Si or O Na or F Cs or I Al or Cl N or Na Sr or Br O or Cl F or Na Calculate the molecular formula of a compound with the following percent composition. Molar mass is 180.156. Carbon 40.001% Hydrogen 6.714% Oxygen 53.285% x