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What is the [OH-] of each solution?
(a) 0.4 M NaOH, pH = 13.6
(b) 1E-2 M K2CO3, pH = 11.2
(c) 2E-3 M Na3PO4, pH = 12.0
(d) 0.11 M KHCO3, pH = 8.4
How many photons are required to heat 295 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this temperature range.
a compound contains only carbon hydrogen and oxygen. combustion of 0.01068 g of the compound yields 0.01601 g of co2
At a certain temperature and pressure 2.8 L of N2 reacts with 4.2 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced
a reaction of 1 liter of chlorine cl2 and 3 liters of fluorine gas f2 yeilds 2 liters of a gaseous product. all gases
nonionic solute in 50.0g of water. The solution freezes at -0.1455 degrees C. what is the molar mass of the solute?
Problem- The hydronium ion concentration of a 0.010 M acetic acid solution is 4.2 x 10-4 M. What is the pH of the solution
the standard enthalpy of formation of the metallocene bisbenzenechromium was measured in a calorimeter. it was found
a sample of neon is collected by displacing 182 ml of water. the pressures of the gas and the atmosphere are equalized
If the association of several protein chains into a larger structure as in the case of hemoglobin is an example of ________ structure
a sample of n2o4g is placed in an empty cylinder at 25oc. after equilibrium is reached the total pressure is 1.5 atm
Question- If you were to return your 97-106 C fraction to the empty boiling flask and redistill it, you might expect it all to distill between 97-106C as it did the first time. It actually yields some distillate in all four boiling ranges. Explain..
using the delta hfdegree sdegree and delta gfdegree data from appendix d in your textbook calculate delta h degree
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