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A 36.0 g piece of copper metal is initially at 100.0 degree C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 20.0 degree C. After stirring, the final temperature of both copper and water is 25.0 degree C. Assuming no heat losses, and that the specific heat (capacity) of water is 4.18 J/(g.K), what is the specific heat capacity of the copper in J/K?
what may happen to a large i.e. 30-50lb container of trichloro-s-triazinetrione or calcium hypochlorite if it is left
Duplicate 0.50 g samples of a finely powdered gold ore are digested in an HCl/HNO3 mix and evaporated to dryness. Each sample is then treated with an additional 15 mL of HCl and diluted with an additional 40 mL of water.
The Molecular Nature of Matter and Change problem 78p I am stuck on the standard heats of reactions. I do not know what those are, but they are crucial for the problem
Calculate the redox potential of the solution after mixing 25.0 mL of 0.100 M Fe^3+(aq) with 45.0 mL of 0.100 M Sn^2+(aq). E^0 = 0.771 for the ferric/ferrous couple; E^0 = 0.154 for the stannic/stannous couple 2 Fe^3+(aq) + Sn^2+(aq) ? 2Fe^2+(aq) ..
calculate the change in enthalpy for the mg hcl reaction using standard enthalpies of formation delta hf for hcl aq
Calculate the equilibirum concentration of all the gases( in class my instructor said that a method called the ICE table is useful. do you know how to do that?). b) calculate the numerical value of Kc.
Use the following data to calculate the value of ?G°rxn at 298 K for the reaction described by the given chemical equation. Include the units.
When a molecule forms a hydrogen-bonded dimer as shown in your lab manual on pg 162 or is an electrolyte, you need to account for Van't Hoff factors. For the dimer shown in manual
what is the system that is buffered? what is the ph of the system? what compounds are responsible for the buffered
calculate the ph of a solution prepared by mixing 250. ml of 0.174 m aqueous hf density 1.10 gml with 38.7 g of an
1)What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures.
Determine the number of grams of O2 consumed.
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