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1) What is the molecular geometry of the ammonium ion?
2) What is the molecular geometry of the SO2Cl2 molecule?
3) What is the approximate F-S-F bond angle in sulfur hexafluoride?
4) What is the hybridization of the central atom in COCl2?
5) What is the hybridization of the central atom in selenium tetrabromide?
6) How many electrons are in * orbitals in the molecule O2?
7) What is the bond order in H2+?
8) The density of a sample of gas is 1.31g/L at STP (1.00atm and 273.15K). What is the average molar mass of the molecules in the gas sample? Record your answers to three significant figures.
9) The concentration of CO2 in the atmosphere is 375ppm (by volume). What is the mole fraction of CO2 in the atmosphere?
10) Calculate the ratio of rates of effusion of O2 versus Cl2. Record your answers to three significant figures.
Determine How many moles each of Na+ and Cl- are in 0.800 L A physiological saline solution contains 172mEq/ L each of Na+ and Cl-of the saline solution?
What is methanol's vapor pressure It boils at 65.0 °C and has a heat of vaporization ΔHvap = 37.4 kJ/mol. at 22.0 °C?
Determine what is the observed rate for the given reaction - empirically determined rate
Determine how many grams of NaCl should be dissolved in a liter of H 2 O to produce an isotonic solution?
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
Determine number of moles of oxygen molecules are in the cylinder and compute the mass of solid C 2 H 3 NaO 2 required mixing with 60.0mL of .125M C 2 H 4 O 2 to form a ph 4.20 buffer?
Determine the percent by mass of calcium carbonate in the sample
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C.
NH3(Ammonia ) is widely used in many household cleaners and as a fertilizer. Calculate How much ammonia (in units of mol) is produced when 7.8 mol of H gas react with an excess of N gas.
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
Determine the pressure, in torr and atm, of 3.94 mol carbon monoxide gas in a 4.25 Litre tank at temperature 31 degrees Celsius.
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