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How many grams of aluminum oxide are produced according to the reaction below given that you start with 10.0 g of Al and 19.0 grams of O2?
How many grams of NH4Cl must be added to 424 mL of a 0.69 M solution of NH3 to prepare a pH = 9.00 buffer.
If the partial pressure of oxygen in the atmosphere is 0.20 atm, what is the soluability of dissolved oxygen in blood? Recall that soluability constant of oxygen
A steel cylinder holds 150.0 mol argon gas at 25 degrees C and a pressure of 9.53Mpa. After some argon has been used, the pressure is 2.00Mpa at 19 degrees C. What mass of argon remains in the cylinder.
Metallic chromium can be made by the electrolysis of molten CrCl3. What mass of Cr is formed by passing a current of 7.44 A through molten CrCl3 for 4.10 days? Use F = 96,500 C/mol for Faraday's constant.
For one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 3.
Phenolphthalein is added, and the solution remains colorless because of the excess acid that has not been neutralized. the solution is tirtared with 9.7 mL of 0.09 M NaOH to a faint pink endpoint
An acid solution is 5.00% HCl by mass. Assuming that the density of the solution is 1.0 g/mL, find the molarity of the hydrogen ion in the solution. The molar mass of HCl is 36.5 g/mol
A compound of iodine and cesium contains 63.94g of metal and 61.06g of nonmetal. How many grams of cesium are in 38.77g of the compound? How many grams of iodine?
A sample of CO2 gas at 795 torr is cooled from 25°C until the new pressure is 125 torr. Calculate the new temperature of the gas.
If this gas is brought to a final temperature of 150 degrees Celsius while the volume is held constant, what is the final pressure?
Assume that a particular reaction evolves 241 {rm kJ} of heat and that 33 {rm kJ} of PV work is gained by the system.
Consider 4.00 rm L of a gas at 365 rm mmHg and 20. rm ^{circ}C . If the container is compressed to 3.00 rm L and the temperature is increased to 36, rm ^{circ}C, what is the new pressure, P_2, inside the container? Assume no change in the amount o..
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