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Calcium oxide and water react according to the following reaction:
CaO(s) + H2O(l) --> Ca(OH)2(s) ? H°= -64.8 kJ/mol
How much heat would be liberated when 7.15 g CaO(s) is dropped into a beaker containing 152 g H2O?
What is the coordination number for each of the following complexes? A. [Co(NH3)4(H2O)2]^3+ B. [Cr(EDTA)]^-
In the concentration range of 500 to 2000 ppm of U, there is a linear relationship between absorbance at 351.5 nm and concentration. At lower concentrations the relationship is nonlinear unless about 2000 ppm of an alkali metal salt is introduced ..
The freezing point change is ?1.9°C. a) Calculate the number of moles of solute in the solution. b) Calculate the molar mass of the solute.
Calculate the amount of heat transferred when 24.0 of is decomposed by this reaction at constant pressure.
A sample of oxygen is collected over water at a total pressure of 690.7 mmHg at 19°C. The vapor pressure of water at 19°C is 16.5 mmHg. What is the partial pressure of O2
3agno3 na3po4 --gt ag3po4 3nano3silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. how
Calculate the change in entropy of the copper, taking the Cpm=24.4 J/(K Mole). The experiment was then repeated with the copper immersed in a stream of water that maintains its temperature at 293 K. Calculate the change in entropy of the copper an..
An atom has the nucleus which consists of some elements, name them?
write structural formulas for the following condensed structures and determine the functional group in each compound.
The energy of a photon is 3.16 times 10^-19J. what is the wavelength of the corresponding light. what is the color of this light.
Define the Octet and Duet rule and how it explains the charges on common ions and both covalent and ionic bonding (for representative elements only)
Consider a steel tank whose volume is 65.0 and which contains gas at a pressure of 16500 at 21.What mass of does the tank contain?
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