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How many liters of O2 gas measured at 861 torr and 250.0°C are formed by the decomposition of 200. g of KClO? (You will need a balanced equation where KClO is the reactant. The other product is KCl.)
what mass of this substance must evaporate in order to freeze 180g of water initially. heat of fusion water is 334J/g; the specific heat of water is 4.18 J/g-k.
The Ka of a monoprotic weak acid is 5.81 × 10-3. What is the percent ionization of a 0.147 M solution of this acid?
If 20.8 ml of base is required to reach the equivalence point, what is the concentration of the acid?
An aerosol spray can of deodorant with a volume of 320 mL contains 2.8 g of propane gas (C3H8) as propellant. What is the pressure in the can at 20 degrees Celsius?
to make up a solution of phosphate buffered saline pbs you need 5mm na2hpo4 anhydrous fw 141.96 0.15 m nacl fw 58.44
describe any important differences between benzopinacol and benzopinacolone in the ir and hnmr
A tank contains 40 lb. of air, 20 lb. of CO2 and 30 lb. of SO2. Compute the volume of the tank if the total pressure of the mixture is 44.08 psi at 86°F. What is the partial pressure of each constituent and the average molecular weight of the mixt..
if I weigh KHP to use in an experiment (to titrate with NaOH ) on a triple beam balance opposed to analytical scale to eventually find molar mass of unknown NH4 salt, what effect, if any, would this have on the accuracy of final results
If you start with 2 cubes of ice, each with a mass of 25.0g and at a temperature of -10C, and 25.0ml of water with a temperature of 100C, what will the final temperature of the mixture be? Assume fina l state is liquid water for all species.
How the concentration on Cl- was calculated from a solution of 0.0167M CdCl2. It gives the value [Cl-]=0.0334
Using this equation, determine how many moles are formed for every one mole of KIO3. KIO3 + 5I + 6H ? 3I2 + 3H2O + K B)Using this equation, determine how many moles S2O3 are needed to titrate the number of moles of I2 calculated in A.
Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation
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