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Different products exist to de-ice objects or to prevent water from freezing. What are some of these products? What is the chemistry behind these products, i.e. how do they work chemically? What are their specific uses? How do they differ?
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral?
copper and zinc elements 29 and 30 respectively appear next to each other on the periodic table. a 5.50 g sample of
Two unknowns, X and Y, both having the molecular formula C4H8O, give the following results with four chemical tests. Propose a structure for X consistent with this information.
a 100-rm w lightbulb is placed in a cylinder equipped with a moveable piston. the lightbulb is turned on for
One mole of an ideal gas expands reversibly and adiabatically from an initial temperature of 35.0 degrees C and a volume of 10.0 L to a final volume of 40.0 L. Calculate the final temperature, the final pressure, delta U and w. Assume Cp = 20.28 J..
the standard free energy of activation of a reaction a is 77.7 kj mol-1 18.6 kcal mol-1 at 298 k. reaction b is one
Methyl salicylate, C8H8O3, the adorous constituent of oil of wintergreen, has a vapor pressure of 1.00 torr at 54.3 degrees celsius and 10.0 torr at 95.3 degrees celcius. What is it's vapor pressure at 25 degrees celcius?
Problem- Calculate the collision frequency, z, and the collision density, Z, in carbon monoxide, R = 180pm at 298K and 100kPa. What is the percentage increase when the temperature is raised by 10K at a constant volume?
Calculate weight percent of Fe in ore titrating with potassium dichromate with the following information:
If 6.06 L of O2 gas is collected over water at 250C (vapor pressure = 23.8 torr) and a barometric pressure of 702 torr, what is the mass of H2O2 (MM = 34.02 g/mole) decomposed?
what are the variables dependent independent and control in this experiment?ca2h2o-----gtcaoh2h2changing the
an element consists of isotopes. the abundance of one isotope is 60.1 and its atomic mass is 68.9256 u. the atomic mass
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