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Calculate the mass of magnesium, in mg, needed to generate 80.0 mL of H2 gas. Assume a temperature of 22.0 °C and a pressure of 760.0 Torr.
A solution containing iodide ions has a percent transmittance reading of 72.3%. what is the molarity of the iodide ion in this solution
In each of the following pairs of hydrocarbons, which one would you expect to have higher boiling points? And Why?
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
If the concentration of X is increased to 2.0 M and the concentration of Z to 3.0 M, how long should this reaction take?
A 4.80 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C.
what is the mole fraction of each componet in solution? ethanol, methanol, water.
If Ice melts at 273.15K with delta H fusion equaling 6.01kJ/ mol. An ice cube whose mass is 13.8 kg is dropped in a swimming pool whose temperature is held at 22.5 degrees Celsius.
In the commercial manufacture of nitric acid, how many liters of nitrogen dioxide will produce 30 liters of nitric oxide given that both gases are at STP? 3NO2 + H2O-> 2HNO3 +NO
Blending of two wines with different concentrations of acid, Two wines are available for blending: One tank of 1000 L has a Titratable Acidity of 9.0 g/L and another tank containing 2000 L has a Titratable Acidity of 0.6 g/L.
A tablet of Vitamin C changed color at 23.7 mLs of Iodine. how do you determine how much vitamin c is in the tablet.
If you had 6.02 x 10^23 dollars, and could spend it at 1 billion per second for your entire life (75 years), what approximate percentage of your original money would you have left?
dissolved in water in a calorimeter that has a total heat capacity of 2.294 kJ·K-1, the temperature decreases by 0.470 K. Calculate the molar heat of solution of KCN.
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