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A large scuba tank with a volume of 18 L is rated for a pressure of 220 bar. The tank is filled at 20 °C and contains enough air to supply 1860 L of air to a diver at a pressure of 2.37 atm (a depth of 45 feet). Was the tank filled to capacity at 20 °C?
Heavy water, D2O (molar mass = 20.03 g mol-1), can be separated from ordinary water, H2O (molar mass = 18.01), as a result of the difference in the relative rates of diffusion of the molecules in the gas phase. Calculate the relative rates of diffusion of H2O and D2O.
The decomposition of carbon disulfide, CS2 to form carbon monosulfide, CS and sulfur is first order with k = 2.8 x 10^-7 / second at 1000 degrees C. CS2 => CS + S determine how many days would be needed before a 1.00 gram sample of CS2 had decompo..
Which of the following represents the maximum available useful energy when a system changes spontaneously from a given initial state to a given final state
A 0.021 mol sample of a weak acid, HX, is dissolved in 575 mL of water and titrated with 0.41 M NaOH. After 29 mL of the NaOH solution has been added, the overall pH = 6.074. Calculate the Ka value for HX.
The enthalpy of formation of compound X is -612 kJ/mol, and the sole product of its combustion has a enthalpy of formation of -671 kJ/mol. What is the enthalpy of combustion of compound X?
calculate theformation constant forAg(S2O3)23- . Show yourcalculations with units and the correct number of significantfigures.
It takes more energy to boil away a pan of water at 100 oC than to heat it from room temperatue to 100 �C, because. the steam is hotter than the water. the steam occupies a greater volume than the water.
A gas occupies a volume of 75 ml when the pressure is 380 mmHg. What volume does the gas occupy at 1140 mmHg
What is theoretical yield of nitrogen monoxide in grams d. How many moles of excess reactant remain e. What is the % yield of the reaction
what's the molar solubility (mol/L) of Cr(OH)3 at pH=10.00 (not buffered)? Ksp for Cr(OH)3 is 3.0E-29
Explain which of the following species is diamagnetic. Depict electron configuration boxes for all species every
Expalin how you would prepare 500.0mL of a solution that is 0.100 M of H2SO4 from concentrated 18.0 M of H2SO4, which is a liquid with density 1.82g/mL
The EPA anticipated lowering the allowable PM2.5 level to 35 ug/m3. Explain how many particles would be in a cubic meter of air assuming that all the particles were spheres of a diameter of 2.5 um and had a density of 1 g/cm3
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