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A water balloon with a volume of 260.0 L has launched at 20 degrees celcius at sea level where the atmospphereic pressure is 1.00 atm. The balloon rises to an altitude of 20000 m, where atmosphereic pressure is 63 mmhg and the temperature is 210 k. What is the volume of the balloon at 20,000 m
An unknown is believed to be an alcohol because the IR spectrum showed broad absorption at 3200-3500 cm-1 and no absorption in the 1700-1750 cm-1 region.
Cars were timed by police radar as they passed in both directions below a bridge. Their velocities (kilometres per hour, numbers of cars in parentheses) to the east and west were as follows
How much energy (in kilojoules) is required to convert 110 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
The isomerization of methyl isocyanide, CH3NC -> CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199 degrees celcius and 12.5 min at 230 degrees celcius. Calculate the activation energy for this reaction.
The density of lead is 11.4 g/cm3 at 25°C. Calculate the volume occupied by 25.0 g of lead.
50.0 ml of 0.987 M HCl was mixed with 50.0 ml of 1.02 M NaOH, the heat of neutralization was calculated to be -2.7 kJ. What is the enthalpy (molar heat) of neutralization?
How many moles of oxygen will be produced if 27.6 grams of Al are produced?
start with 200 mg of cyclopentadiene and 300 mg of Maleic anhydride, and 375 mg of the cycloadduct anhydride is obtained: Which is the limiting recant?
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.860 g of the isotope to be reduced to 0.170 g by decay
In a crazy situation the Oylan Vinegar Company has 10,000 gallons of vinegar with a concentration of .114 M. It also hass a .68% acetic acid by mass
A gaseous mixture of O2 and Kr has a density of 1.192 g/L at 305 torr and 300. K. What is the mole percent O2 in the mixture
what is the molar concentration of the salt solution formed in this reaction? What is the molar concentration of the excess reactant once this reaction has finished?
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