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A sample containing 2.00 mol of graphite reacts completely with a limited quantity of oxygen at 25 degrees C and 1.0 atm pressure, producing 481 kJ of heat and a mixture of CO and CO2. Calculate the masses of CO and CO2 produced.
to heat 236ml of water from 25 degrees celcius to 78 degrees celcius in 2.00 minutes what must be the heat rating of
Using the Ka for formic acid, calculate the pH at the equivalence point D. for the titration described in the other question above.
A certain quantity of a gas occupies 61.3 mL at 68 ?C. If the pressure remains constant, what would be the volume of the gas at 128 ?C?
Consider the possible reaction when stoichiometric amounts of solutions of Ba(OH)2(aq) and Al2(SO4)3(aq) are mixed. The products of the reaction are
a bird is flying around the world at a rate of 12.2ftsec. how many days will it take to complete its
A 16.4-L sample of gas at STP is heated to 55°C at 605 torr. What is the new volume?
A calorimeter contains 125 g of water at 26.1°C. A block of metal with a mass of 25 g is heated to 96.5°C and then placed in the water in the calorimeter.
a 4.80 g nugget of pure gold absorbed 298 j of heat. what was the final temperature of the gold if the initial
two 1.00g masses are attached by a spring with force constant k 500 kg s-2. calculate the zero point energy of the
the activation energy for the reaction o o3 ? 2o2 is 25 kjmol and the enthalpy change is ?h -388 kjmol. what is the
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K temperature and 1.89 * 10^-3 atm pressure
A researcher studying the nutritional value of a new candy places a 4.90-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.54 °C
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