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What is the final temperature when 20.0 g of water (specific heat capacity 4.184 J•g-1•K-1) at 80.0 ?C is mixed with 30.0 g of water at 20.0 ?C in an insulated container?
Consider two analgesics derived from salicylic acid: acetylsalicylic acid (aspirin) and methyl salicylate (oil of wintergreen, found in muscle relaxants like "BenGay").
A compound contain 60.87% carbon, 4.38% hydrogen, and 34.75% oxygen then determine its empirical formula?
How many liter of hydogen are required to react with 1.9 l of Oxygen to make water at STP according to Avogadro's law.
Draw a mechanism for the dehydration of cyclohexanol catalyzed by phosphoric acid.
Assuming the same calorimeter constant you determined (I got 217.8 J/degreesC) and assuiming NaOH is the limiting reagent, what is delta H(neutralization) in kJ/mol?
A compound contains only carbon, hydrogen, nitrogen and oxygen. Combustion of 0.314 g of the compound produced 0.426 g CO2, and 0.0620 g H2O. In another experiment it is found that 0.103 g of the compound produces 0.0460 g of NH3
A sample of chlorine gas is confined in a 2.08-L container at 338 torr and 50.0 degrees C. how many moles of gas are in the sample
100 mL of .200 M HCl is titrated with .250 M of NaOH. What is the pH after 50 mL of the base has been added. What is the pH at the equivalence point
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.080 M in NH4Cl
A 0.0100 molal aqueous solution of a weak acid freezes at -0.0205 oC. Calculate the percent ionization of the weak acid, HA.
Derive the second order integrated rate law and half-life equation showing all relevant mathematical steps.
a sample of 40.0 ml of .1 m acetic acid is titrated with .150 m naoh ka 1.8 x 10-5 what volume of naoh is used in the
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