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When combining with nometallic atoms, metallic atoms generally will... a) lose electrons and form negative ions b)lose electrons and form positive ions c) gain electrons and form negative ions d) gain electrons and form positive ions
Both solutions were initially at 35.00°C and the temperature of the resulting solution was recorded as 37.00°C, determine the ??H°rxn (in units of kJ/mol NaOH) for the neutralization reaction between aqueous NaOH and HCl.
Determine the Ka of a 0.1M solution of acetic acid in which the hydronium ion concentration is 1.35 x 10^-3 M
Calculate the activation energy of this reaction in kJ/mol At what temperature would the half-life be 12.0 min?
how would you make 100ml of a buffer with a pH =4.25, starting with 0.25 M acetic acid and 0.25M sodium acetate
Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m What is the freezing point of a solution of calcium chloride that contains 26.0 g CaCl2 dissolved in 330. g of water
When 37.0 mL of 0.640 M H2SO4 is added to 37.0 mL of 1.28 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted.
A particular reactant decomposes with a half-life of 171 s when its initial concentration is 0.329 M. The same reactant decomposes with a half-life of 245 s when its initial concentration is 0.230 M. determine the reaction order. calculate the rat..
A 455-g piece of copper tubing is heated to 89.5 oC and placed in an insulated vessel containing 159 g of water at 22.8 oC. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel
which of the following ionic compounds are soluble in water and which are insoluble: a)KCl. b)MgSO4. c)CuS. d)AgNO3. e)Ca(OH)2
calculate the equilibrium concentration of Ag+(aq) in a solution that is initially 0.200 M AgNO3 and 0.810 M NH3,
If you have 375 molecules in a 10^-4 dilution, how many molecules were in the original solution
What is temperature of boiling water in Denver (in?C) at an elevation of 6000 ft ? 2000 m given that atmospheric pressure at that altitude is about 0.8 atm?
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