I teach high school chem and AP Chemistry at a suburban high school about 25 miles outside of Manhattan.
Why do ethanol and dimethyl ether have such different properties even though they have the same chemical formula?
What are the key properties of liquids (in contrast to gases and solids)?
What is the fundamental difference between an amorphous solid and a crystalline solid?
Describe the relationship between the state of a substance, its temperature, and the strength of its intermolecular forces.
Why are intermolecular forces generally much weaker than bonding forces?
What is the dipole-dipole force? How can we predict the presence of dipole-dipole forces in a compound?
1) Calculate the number of Li+ ions in 5.40 g Li3PO4.Li+ ions = Calculate the grams of O in 5.40 g Li3PO4. Mass:
2) How many total atoms are in 0.710 g of P2O5?Total atoms:
60.0 mL of 0.322 M potassiumiodide are combined with 20.0 mL of0.530 M lead (II) nitrate. How many grams oflead (II) iodide will precipitate?
What do you think the energy diagram for an electron ina low energy level looks like?Draw a representation that shows an electron in a H atom thatis in a low energy level.Then explain your drawing and provide any other informationthat you were not able to include in your representation.
Arrange the following substances in order of decreasingmagnitude of lattice energy. Rank from largest to smallest magnitude of lattice enrgy. Torank items as equivalent, overlap them. BaO KCl NaF SrO
Compute for the amount of barium chromate (g) produced from thereaction of 2 L of 0.50 M barium chloride solution with an excessof 5.00 mol/L potassium chromate solution.BaCl2(aq) +K2CrO4(aq) -->BaCrO4 + 2 KCl(aq)
Consider the following thermochemical equation:CaCO3(s) CaO(s) + CO2Ho = +178 kJa) How many moles of CaCO3 are in 28.5g ofCaCO3? molesb) How much heat must be absorbed by 28.5 g ofCaCO3 to convert it completely to CaO? kJ
