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Calculate the volume (in liters) occupied by 1.51 moles of nitric oxide (NO) at 7.50 atm and 57 degrees C 16. What is the volume (in liters) occupied by 43.7 g of HCl at STP? Assume ideal behavior. 18. A sample of oxygen gas initially at 0.650 atm is cooled from 24 degrees C to -75 degrees C at constant volume. What is its final pressure (in atm)? 20. What is the density (in g/L) of uranium hexafluoride (UF6) at 760 mmHg and 58 degrees C?
The atomic weight of a newly discovered el- ement is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a per- cent abundance of 41.7%. What is the mass of the second isotope?
Calculate whether soils in the region are subject to excessive sulphate loading if the only source of sulphate is rainfall and if the recommended maximum is set at 20 Kg SO4-2 ha-1.
What mass of salt would have to be added to 1000.0 mL of water in order to raise the boiling point of the solution by 0.5 C?
Determine the specific heat of a metal object of 19 grams that is heated to 96 degrees Celsius and added to a calorimeter containing 75 grams of H 2 O at 18 degrees Celsius.
consider a flask at 298 K with an air pressure of 738 mmHg to which some n-butanol is added. If the measured pressure after the addition is 745 mmHg, what is the vapor pressure of n-butanol at 298 K?
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
Eugenol can also be isolated from cloves using extraction with CO2. discuss the advantages and disadvantages of distillation versus CO2 extraction.
5.00 mL of water sample was titrated for hardness with 4.15mL of 0.0200M EDTA. write the equastion for the reaction and calcualte the hardness of the water in ppm
What will happen to the equilibrium as OH- ions are added?
Calculate the concentration of Cu2+ in a solution prepared by adding 4.9×10^?3mol of CuSO4 to 0.480L of 0.35M NH3.
A gaseous mixture of and has a density of 1.104 at 445 and 300 . What is the mole percent in the mixture?
What is the pH of a solution which results from mixing 150 mL of 0.50M acetic acid and 150 mL of 0.50M sodium hydroxide at 25oC?
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