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What is the molar mass of a gas if 0.250 g of the gas occupies 215 mL at 618 mmHg and 30.0°C?
Calculate Ecell for the following electrochemical cell at 25 °C Pt(s) | H2(g, 1.00 atm) | H+(aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s) given the following standard reduction potentials.
Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.
The total volume of hydrogen needed to fill the Hindenberg was 2.0x10^8 L at 1.00 atm and 25 C. How many kilojoules of energy were evolved when it burned?
Determine the value of the equilibrium constant at this temperature - Ammonium Hydrosulfide NH4HS yields NH3(Ammonia) and Hydrogen sulfide
A reagent bottle is labeled 0.388M Na2SO4. assuming no volume change, how many grams of Na2SO4 (MM=142.05g/mol) needs to be added to 1.50L solution to obtain 0.750M solution of Na2SO4?
A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 188g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 degrees Celsius .
0.75g of hydrogen chloride is dissolved in water to make 2.5L of solution. What is the pH of the resulting hydrochloric acid solution.
At 0.967 atm, the height of mercury in a barometer is 0.735 m. If the mercury were replaced with water, what height of water (in meters) would be supported at this pressure.
Determine what volume of HI, will be produced at the same temperature and pressure, If all the H2 and I2 are consumed?
If a bottle of nail polish remover contains 150g of acetone, how much heat would be released by its complete combustion?
Predicting the Polarizability of a Molecule. Consider the following set of data for polarizability. From what I have learned, the simplest model for predicting the polarizability of a molecule is to assume that polarizability scales with the type.
The Henry's Law Constant for O2 in water at 20 C is 1.28x10-3mol/(L atm). How many grams of O2 will dissolve in 2.0L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
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