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When 96.4 g of god at some temperature is added to 25.0 g of water at 23.4 C in a calorimeter, the final temperature of the resulting mixture is 26.8 C. If the specific heat of gold is 0.128 J/g*K and the heat capacity of the calorimeter is 32.0 J/C, what was the initial temperature of the hold sample?
What is the half life of this reaction if the initial concentration is 1.40 M. b) Given this same starting concentration, calculate the concentration after 3 minutes. c) How long would it take for the starting concentration to reduce to 0.50 M?
When 27.5 mL of 0.520 M H2SO4 is added to 27.5 mL of 1.04 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate
A reaction initially contains 0.1 moles of H2(g) and I2(g) in a 1L flask. At equilibrium the final concentration of HI(g) is 0.19M. What is Kp for this reaction.
What mass of potassium carbonate K2CO3, must be weighed out to prepare 125.0mL of a 0.0500M solution of salt?
In the dehydration of methylcyclohexanols, would it be advantageous to relux the reaction mixture instead of performing a distillation?
Suppose 50.0 mL of 0.250 M CoCl2 solution is added to 25.0 mL of 0.350 M NiCl2 solution. Calculate the concentration, in moles per liter, of each of the ions present after mixing. Assume that the volumes are additive.
Important information about Molar concentrations, Calculate the molar concentrations, I-, disulfur octaoxide, disulfur trioxide.
Calculate the volume of oxygen gas at stp produced when 3.57 grams of h2O2 decomposes to produce water and oxygen
a predict the order of elution of a mixture of biphenyl benzoicacid triphenylmethanol methyl benzoate from a silica
914g sample of a nonvolatile solid solute dissolves in 9.82g of cyclohexane. the change in the freezing point of the solution is 2.94 degrees c. what is the molality of the solute in the solution
what product would you get when reacting phenol and chloroacetic acid in a basic solution, followed by acidification
A scientist has 59g of Polonium-103. How much will be left after 12 yers, if Polonium-103 has a half life of 3 years.
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