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A compressed-air tank carried by scuba divers has a volume of 6.80L and a pressure of 120atm at 20 degrees celsius. What is the volume of air in the tank at 0 degrees celsius and 1.00atm pressure (STP)?
if the aluminum block is initially at 25circ c what is the final temperature of the block after the evaporation of the
Suppose that 25g of each of the following substances is initially at 27.0 degrees C. What is the final temperature of each substance upon absorbing 2.30kJ of heat
dissolved in enough water to make 250.0 mL of solution. Write the hydrolyis reaction for the ion that controls the pH, and calculate the pH
A lactic acid/lactate ion buffer solution contains 0.24 M HC3H5O3 and 0.82 M C3H5O3^-, respectively. The Ka value of lactic acid is 1.4*10^-4. Calculate the of this buffer. Express the pH numerically.
a reaction known to release heat of four kilo joules takes place in a calorimeter containing two litres of solution and
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
Stoichiometry explained in this solution, If the yield of CO2 (g) from the reaction of butane with hydrogen peroxide is only 80.65%, with how many grams of butane and hydrogen peroxide
Assuming Kf= 478Kg/s^2, calculate and compare the fraction of molecules in the first excited vibrational state at 1000K
A 5.5 g sample of metal at 100.0 degrees celsius is placed in a calorimeter with 20.0 g of water at 15.0 degree celsius. If the temperature of the water rises to 21.0 degrees celsius, what is the specific heat of the metal?
The lighter isotope has an abundance of 67.7%. Calculate the atomic mass of the element X.
What would be the most likely formula for a compound composed of Ca and N? The boiling point of oxygen is 55°K. What is the equivalent temperature on the Celsius scale?
a sample of 36.0 mg of an organic compound that has molar mass 84.0 gmol is dissolved in 10.0 ml of h2o. solution is
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