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What concentration of the lead ion, Pb+2 , must be exceeded to precipitate PbF2 from a solution that is 1.00*10^-2M in the fluoride ion, F- ? Ksp for lead fluoride is 3.3*10^-8
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
how many grams of dry need to be added to 2.30 of a 0.400 solution of ammonia to prepare a buffer solution that has a
A collapsed balloon is filled with He to a volume of 11.2L at a pressure of 1.00 atm. Oxygen (O2) is then assed so that the final volume of the ballon is 21
the oxidation of nitric oxide to nitrogen dioxide is2nog o2g -gt 2no2gif 100.0 ml of no at stp reacts with 400.0 ml of
P4(s) + 6F2(g) --> 4PF3(g) How many grams of fluorine are needed to react with 6.20g of phosphorus?
The heat capacity of the coffee cup (without the water) is 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? (c of water is 4.184 J/g×K)
The combustion of magnesium metal is described by the following equation. What mass of magnesium must be burned to produce 1.00 kJ of heat
A sample of nitrous oxide gas, N2O in a nonrigid container at a temperature of 33C occupies a certain volume at a certain pressure. What will be its temperature in degree Celsuis in each of the following situations
Number these in order of ease of hydrolysis. 1= easiest to hydrolyze 4=hardest to hydrolyze C6H5C(=O)OC66H5 C6H5C(=O)OCl C6H5C TRIPLE BOND N C6H5(=O)NHC6H5
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing
0.100 moles of benzoic acid and 0.100 moles of sodium benzoate are added to 1.000 liter of water. What is the final pH
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