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Glass is a notorious source of metal ion contamination. Three glassbottles were crushed and sieved to collect 1-mm pieces. To see howmuch Al3+ could be extracted, 200mL of a 0.05 Msolution of the metal-binding compound EDTA was stirred with 0.50 gof ~1-mm glass particles in a polyethylene flask. The Al content ofthe solution after 2 months was 5.2µM. The total Al content ofthe glass, measured after completely dissolving some glass in 48wt% HF with microwave heating, was 0.80 wt%. What fraction of theAl was extracted from the glass by EDTA?
The contents of the tank are transferred without loss to an evacuated 55 L tank in scold room where the temperature is 4 degree C . What is the pressure in the tank ?
The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.
Hydrocarbons are often reacted with steam to form H2, as shown for propane- C3H8(g) + 6 H2O(g) 3 CO2(g) + 10 H2(g) Calculate Kp for this reaction at a particular temperature
How many thermodynamic degrees of freedom are available to an equilibrium system consisting of an ice cube floating in a glass of water
A fuel cell works on the same principle as a battery but is continually fed with fuel. In one fuel cell, methanol enters on one side of the unit, and air enters on the other side both circulate past electrodes, and a chemical reaction occurs that ..
A solution is tested with a series of indicators. The solution turns blue when bromcresol green is added, it turns purple when bromcresol purple is added, and is colorless when phenolphthalein is added. What is the estimated pH of this solution
If the heat released during condensation goes only toward heating the metal, what is the final temperature (in degree celcius) of the metal block? (The specific heat capacity of aluminum is 0.903 J/g times degree celsius)
A certain carbon-hydrogen compound contains 84.1% C by mass and the remainder is hydrogen. What is the empirical formula of the compound
acetic acid has a Ka of 1.8x10^-5. what is the pH of a buffer solution containing .15 M CH3COOH(acetic acid) and .15 M CH3COO^-?
What is the molecular formula of a compound given the molar mass of the compound is 205.4 g/mol and the empirical formula is C3H5.
The PCB concentration in the air inside a typical house is 400 ng/m3, and the ventilation rate is such that it takes, on average, 10 h to change the indoor air. If the indoor PCBs are coming from a leaking capacitor, how much leaks per year
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