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Why does LiBr have a stronger lattice energy then LiF? Why does NaCl have a higher lattice energy then Mg3N2. ( I thought it would LiF because smaller ion and Mg3N2 because greater charge)
Which of the following combinations of n and l represent real orbitals and which are impossible? 4s 3p 3f 2p
For a particular process that is carried out at constant pressure, q= 130 kJ and w= -20 kJ. Therefore,
What is the ionization energy of rubidium atoms in kJ/mol if light with lamda=58.4nm produces electrons with a velocity of 2.450*10^6m/s? ( the mass ofan electron is 9.109*10^-31kg)
The gas phase dimerization reaction 2 NO2 = N2O4 has an equilibrium constant of Kc = 4.72 at 373 K (when all concentrations are measured in M units).
A graduated cylinder contains 155 mL of water . A 15.0-g piece of iron (density = 7.86g/cm^3) and a 20.0-g piece of lead (density = 11.3 g/cm^3) are added. What is the new water level, in milliliters, in the cylinder? motion commented
identify the stronger acid in each of the following pairs a)NH4^+ or H3O^+ b)H2SO4 or HCN c)H2O or H2CO3
VO2 can exist in insulating or metallic form, depending on temperature and pressure.
Cyclopropane contains 85.7%C and 14.3% H by mass. At 50C and .984 atm pressure, 1.56g cyclopropane has a volume of 1L. What is the molecular formula?
What types of intermolecular forces would you expect to exist among molecules of 1-butanol?
Identify the Bronsted-Lowry base for the forward reaction in HCN(aq) + H2PO4-(aq) CN-(aq) + H3PO4(aq) a) HCN b)OH- c)H2PO4- d)CN- e)H3PO4
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
Calculate the resulting CO2 concentration in the atmosphere 30 years from now assuming that we will use only coal to generate electricity. Assume efficiencies of 40% for power plants.
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