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The volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the new pressure in kpa if the temperature is held constant
A 65 L sample of dry air cools from 133°C to -16°C while the pressure is maintained at 2.85 atm. What is the final volume?
An ice cube of 15.1 grams is placed into 304 grams of H 2 O. compute the change in temperature in the H 2 O upon completing melting of the ice.
When 0.040 mol of propionic acid, C2H5CO2H, is dissolved in 300 ml of water, the equilibrium concentration of H3O+ ions is measured to be 1.23 x 10-3 M.
CaC2 + 2H2O --> C2H2 + Ca(OH)2. Using this equation, determine how many moles of CaC2 are needed to react completely with 49 g H2O.
The "Zebra" cell was invented in 1985 in South Africa as part of the "ZEolite Battery Research Africa" project, and is used in all-electric municipal buses and other vehicles.
In high spin complexes, the crystal field splitting energy is small and in low spin complexes, electrons are concentrated in the lower energy orbitals.
Determine How much Na2EDTA x 2 H2O must be weighed to form exactly two litres of 0.0500 M solution? FW=372.24
A piston has an external pressure of 11.0 rm atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.460 liters.
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
Nitromethane has a relatively high boiling point of around 100 c. Which of the following intermolecular force is not present in pure liquid nitromethane and why.
A 1.30 g sample of dry ice is added to a 760 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 735 mmHg. The dry ice is allowed to sublime.
An aqueous solution contains 12.7% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
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