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A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
what mass of CH3CO2H is required to prepare 100.00ml of a 0.48M acetic acid solution?
How much heat is needed to vaporize 2.42 g of liquid oxygen if the molar heat of vaporization for oxygen is 1,629 cal/mole?
How many liters of 13.5 molar HCl stock solution are needed to make 10.5 liters of a 1.8 molar HCl solution?
How many gm of dry NH4Cl need to be combined to 2.30L of a 0.300M solution of NH3, to prepare a buffer solution of pH 8.85.
When 0.062 moles of ammonium sulfate ((NH4)2SO4) are dissolved in enough water to make 200 milliliters of solution, how many ammonium ions are present.
There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million.
The mass ratio of sodium to fluorine in sodium floride is 1.21:1. a sample of sodium fluoride produced 26.5g of sodium upon decomposition how many grams of fluorine was formed.
Describe why this is based on the wavelength range that is transmitted. What color would you see if you mixed the two solutions with ?max = 520 and ?max = 610?
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg} . How much energy in joules would be absorbed by 2.0 L of liquid oxygen as it vaporized? Express your answer numerically in joules.
Calculate the partial pressure of the hydrogen gas using the atmospheric pressure and the vapor pressure of water at the temperature of the solution. Assuming ideal gas behavior, calculate the number of moles of hydrogen gas evolved.
Calculate the activation energy for the following reaction if the rate constant for the reaction increases from 84.2 M-1s-1 at 497 K to 1310 M-1s-1 at 794 K.
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