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A sample of zinc nitride, Zn3N2, contains 39.0 g of zinc. How many nitride ions are present
Estimate the average concentration of methylene chloride. Look up the TL V or the 1WA for methylene chloride and consider how the: evaporation might be performed.
The molar heat capacities of Iron and Gold are 25.19 J/(mol*(*C) and 25.41 J/(mol*(*C) respectively. What is the final temperature of the water and the metal?
Thermal decomposition of 5.00 metric tons of limestone to lime and carbon dioxide requires 9.00 x 10^6 kJ of heat.
What do you think might happen during the solvent migration up the paper if the two long edges of the filter paper overlapped when folded
Calculate the hydrogen ion concentration in a solution containing 7.89 g of strontium hydroxide in 600 mL of solution.
Meals-ready-to-eat (MREs) are military meals that can be heated on a flameless heater. The heat is produced by the following reaction: Mg(s) + 2 H2O(l) ? Mg(OH)2(s) + H2(g)
A solution is made by mixing 45.0 mL of ethanol, C2H6O, and 55.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
what is the molarity of a potassium permanganate solution if 25.0 ml of it reacts with 10.0 ml of .0100 M sodium sulfite under acidic condictions.
For CO2 one of the major absorptions of IR radiation occurs at the wavenumber of 2350cm^-1. what is the energy corresponding to that IR photon
If an enzyme-catalyzed reaction proceeds at 25% maximal velocity at 5 mM substrate concentration, calculate the Km of the enzyme.
A spring loaded piston cylinder device is initially filled with 0.2 lbm of an R-134a liquid vapor mixture whose temperature is -30 deg F and whose quality is 80 percent. The spring constant in the spring force relation F=kx is 37 lbf/in
It is possible to define metallic character as we do in this book and base it on the reactivity of the element and the ease with which it loses electrons.
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