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Calculate the pH of a solution that has an ammonium chloride concentration of .05 M and a sodium acetate concentration of .045 M
Find the entropy change of the system and of the surroundings if 3.000mole of water freezes reversibly at 1.000atm. the freezing temperature is 0.00C at this pressure, and the specific enthalpy change of fusion is equal to 79.7cal/gm at this tempe..
The constant pressure molar heat capacities of ice and water are 37.7 J/ mol K and 75.3 J/ mol K respectively. The molar enthalpy of fusion of ice is 6.01 kJ/ mol at 0.00° C. The system consists of a 105 gram sample of H2O, initially in the form o..
a soulution is prepared by mixing 25.0ml of .100M HCL and 2.00mL of .200M NaCl. what is the molarity of the chloride ion solution
A 1 mM solution of HCl is prepared, and enough KCl is added to adjust the ionic strength to u= 0.1 M. Calculate the pH of the solution
If 66.5 ml of base is required to reach the second equivalence point, what is the concentration of the acid?
how many moles of nitroglycerin were in the container originally? b) how many moles of gas(air) were in the container originally? c) how many moles of gas are in the container after the explosion?
The first step of the Wittig reaction occurs through what kind of mechanism? A. acid-base B. SN2 C. rearrangement D. nucleophilic acyl substitution
Indicate whether each of the following reactions lies to the right, favoring the formation of products, or lies to the left, favoring formation of reactants.
what are the various parameters that can be changed performing MASCOT. how could them affects probability score, any one know about this
Calculate the total energy (in kJ) absorbed by a person exposed to this radiation for 2.0 hours, given that there are 2.0 x 10^16 photons hitting earth's surface per square centimeter per second and the exposed body area
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a ceramic vase for its WO3 content, a 10.00 g sample of the vase was ground and reduced with Pb(Hg) to convert any WO3 to W3 . ..
a metal sample weighing 37.6 grams, which has been heated to a temp of 100 degree cin boling water was placed in 48.6g of waterin a calorimeter. The inital temp of the water was 25.2 degree c.
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