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Since the freezing point of a solution depends on the number of particles, what would you expect the freezing point of 0.1 m solutions of aqueous NaCL and BaCl2? If the actual freezing points of these solutions were -0.348 C and -0.470 C respectively, what are the van't Hoff factors for these two solids?
When relatively small amounts of magnesium burns, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water?
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
Use heat of formation data to determine H for the combustion of hydrogen sulfide according to the following reaction: 2 H2S(g) + 3 O2(g) ? 2 SO2(g) + 2 H2O(?) ?H = ? ?Hfo for compounds:
Use the oxidation-number method to balance the following net ionic redox equation.
What are the molar enthalpy and total enthalpy of the pure system when 50% and 75% have been evaporated at: (i) 30°C, (ii) 50°C? Use liquid at 25°C as a reference state
How much PPP do you need to make 500ml of the solution if you only have 25g and you know that the MW of PPP is 478 g/mole.
Calculate the mass of Nitrogen at room temperature dissolved at room temperature in an 80 L aquarium. Assume a total pressure of 1 atm and .78 mole fraction.
As a result, the pressure inside the vessel drops to 30.64 atm at 25 C. Calculate the final percent by mass of ozone in the vessel.
Muriatic acid is a HCl solutin available in hardware stores. A 3.00-ml sample of muriatic acid required 15.44 ml of 2.04 M NaOH for complete neutralization
A 10.00 ml sample of 0.254 M H2SO4 is titrated with 0.385 M NaOH. What volume of the NaOH solution, in mL, is required?
Use MO theory to predict the net bond order after N2 interacts with a photon that results in the promotion of an electron from bonding to an antibonding orbital.
Determine molar mass for this compound and oxidation state of lead in it. write the oxide formula of lead for the corresponding oxidation state
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