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Caffeine crystals always contain at least one molecule of water per caffeine molecule. Draw chemical structures to explain why a water molecule might be essential to producing a stable crystal of caffeine.
When determining the number of milliliters of mercuring with the density of 13.6 g/mL and having a mass of 501 g, do you divide 13.6 by 501?
calculate deltaH in kilojoules for the reaction, assuming that the heat capacity of the calorimeter is 776 j/celsius, that the specific heat of the final solution is the same as that of water(4.184J/G*C), and that the density of the solution is 1...
What data would you plot in order to use the Nernst equation to determine the concentration of an unknown solution of ions?
Calculate the volume of 1.94×10-3-M H2SO4 solution needed to provide 4.83×10-3 g of H2SO4.
Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
You have proven sulfanilamide is capable of forming a stable and selective crystal lattice. Draw additional molecules of sulfanilamide and hypothesize the intermolecular interactions that are most important for providing a stable and selective cry..
The density of copper is 8.92 g/cm3 and the density o zinc is 7.14 g/cm3. Assume that the density of the brass varies linearly with composition.
A 25.0 mL bubble is realeased from a diver's air tank at a pressure of 4.00 atm and a temperature of 11 C. what is the volume of the bubble when it reaches the ocean surface where the pressure is 1.00 atm and the temperature is 18 C?
A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface?
How many equivalent resonance forms can be drawn for SO2 without expanding the octet on the sulfur atom? (A) 0 (B) 1 (C) 2 (D) 3 (E) 4 17. In which of these species does the first atom in the chemical formula violate the octet rule? 18. How many e..
a solid,is thought to be either zinc or lead(2)nitrate.how are we going to determine the identity of the solid?
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