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An ideal gas that originally had a volume of 175L at 15atm and 298K was compressed to 75L at 5.0atm. Explain what was the new temperature of this gas?
A 635 mL sample of unknown solution reacts completely with to form 19.1g CO2 . What was the concentration of the solution?
what can you say about the realtive magnitudes of the latice energy of lithium iodide and its heat of
of the metal ions we tested in the flame, sodium gave the brightest and most persistent color. Do you think that if a mixture of potassium and sodium were burned in a flame, the gross color of potassium could be detected in the presence of sodium
The temperature of 50g of water was raised to 60 degrees C. by the addition of 4100 joules of heat energy. What was the initial temp. of the water in degrees Celcius?
Calculate the equilibrium constant at 0c and at 50c(assuming enthalpies of formation are independent of temp)
A certain instrument has a has a standard deviation of 1.7280%. How many replicate measurements are necessary if the standard error mean is to be 0.0210%
A 25.00 mL aliquot of iron solution was titrated to equivalence with 26.19 mL of 0.0215 M KMnO4. A procedure similar to the one in experiment 7 was followed. Calculate the moles of iron in the original volumetric flask.
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
How much heat is produced by the complete combustion of 256 CH4 of ? CH4+2O2=CO2+2H2O Hrxn=-802.3kJ
What effect would each of the following have on the calculated molecular weight of an unknown. Would the calculated value be higher than the true value. Lower. Same
How many moles of MgCl2 are present in 50.0 mL of 0.800 M MgCl2 solution?
A 376 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present
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