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Specify which compounds in the following pairs of ionic compounds has a higher lattice energy. (a) KCl or MgO (b) LiF or LiBr (c) Mg3N2 or NaCl.
find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury
Chloromethane,CH3Cl, arises from the oceans and from microbial fermentation and is found throughout the environment. It is used in the manufacture of various chemicals and has been used as a topical anesthetic.
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) -> 2NH3(g)+CO2(g) At a certain temp, the equilibrium pressure of the system is 0.318 atm. Calculate Kp for the reaction.
A mix contains 0.540 mol He (g) , 0.420 mol Ne (g) , and 0.050 mol Ar (g). Placed in 1 Liter container at 25*C.
Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added
Calculate the pH of a solution of 15 mL K2HPO4 at 0.1 molarity,
For phenylanaline can be modeled as particle on a ring. Calculate the probability of finding electrons in one half of the ring from the ground state
What volume and mass of steam at 100 degrees celsius and 760 torr would release the same amount of energy as heat during condensation as 65.5 cm(cubed) of liquid water would release during freezing?
the practical benefits of using a more favorable direction of the reaction for a routine enzyme activity assay
Your lab partner is typically spot-on, but today they are having an awful day. Instead of using concentrated sulfuric acid in this exercise, they used concentrated hydrochloric acid.
It is then restored to its original state by the extraction of heat at constant pressure. Calculate w for each step and for the total process. What values for w would you calculate if the cycle were traversed in the opposite direction?
A quantity of N2 is kept in a 12.8 L contianer at a temperature of 42 C and at pressure of 4.7 atm. how many grams of N2 are in the container?
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