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how many moles of nitrogen are in 5.3 L container at 1.25 atm and a temp of 85 degrees C.
a cylindrical glass tube 13.0 cm in length is filled with mercury. The mass of mercury needed to fill the tube is found to be 107.5g. Calculate the inner diameter of the tube in centimeters.
What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? Ka acetic acid = 1.8 x 10-5.
Calculate the enthalpy change for converting 10.00g of ice at -25.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K,.
The density of liquid oxygen at its boiling point is 1.14kg/L , and its heat of vaporization is 213kJ/kg. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized.
The vapor pressure of a solution containing 53.6 g glycerin (C3H8O3) in 133.7 g ethanol (C2H5OH) is 113 torr at 40 degrees Celsius.
A chemist prepares a sample of hydrogen bromide and finds that it occupies 252 mL at 70C and 464 Torr. What volume would it occupy at 0C at the same pressure.
I am given the 10 ml of .200M Fe(NO3)3 and .25 ml of .00200 KSCN and 14.75 ml of .500 M of HNO3. How do I figure out the initial concentration of FE3+ and SCN-.
A gas mixture being used to simulate the atmosphere of another planet consists of 324 mg of methane, 217 mg of argon, and 228 mg of nitrogen.
Calculate percent recovery of panacetin from the individual masses of its mictures, sucrose (.044g), aspirine (.093), and the unknown (.339).
Determine the trend in sizes of the ions O 2- ,N 3- , F - and also explain why does the trend exist? Also describe which of the molecules contains polar covalent bonds but is NOT itself a polar molecule?
An aerosol can has a gas pressure of 133 kPa at 293 K. Calculate the pressure when the can is heated to 460 K.
Determine why would the P have been higher or lower if the H 2 O had been at pH 5?
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