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If a solution of sodium chloride contains 5.2 NaCl in 900 grams of water. What is the concentration of the solution in parts per million?
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
Two unknowns X and Y both having molecular formulas C4H8O, give the following results with four chemical tests. Propose structures for X and Y consistent with this infomation, Bromine Na Metal Chromic Acid Lucas Reagent
When 4 g sample of NH4NO3(s) was dissolved in 60 g of water in a coffee-cup calorimeter, the temperature drops from 296 to 291 K.
The half-life for the second order reaction of a substance A is 55 seconds when [A]o is 0.84 M. What time is needed for the concentration to decrease to 1/4 of the original value.
Treating 1-butanol with sulfuric acid establishes an equilibrium with 1-butyl bisulfate and water as shown.
A weather balloon containing 605 L of He is released near the equator at 1.01 atm and 305 K. It rises to a point where conditions are 0.489 atm
Determine an apparent radius of the tungsten (VI) ion assuming the oxide ion radius is 1.40A. Suggest a reason that the calculation might give a result that has no physical significance.
The heat of vaporization of water is 40.66 kJ/mol. Assuming sweat is 100% water, how much heat is removed from your body through the evaporation of 3.13 g of sweat?
Write the formula of all the different carbon dioxide molecules that can be formed from these samples. Which molecule has the largest mass?
A sample of gas is confined to a cylinder housed with a movable piston. The gas occupies a volume of 1.8 L at 1.8 atm and 25°C. Calculate the volume of the gas sample if the pressure is increased to 8.6 atm at constant temperature.
The density of H2O2 is 1.463g/ml and the density of O2 is 1.428 g/l. How many liters of O2 will from 55.0mL of H2O2?
What is the order of a reaction that has the following time and concentration data? Time concentration
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