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An insulated container is used to hold 45.60g of water at 39.70 degrees Celcius. A sample of copper weighing 8.50g is placed in a dry test tube and heated for 30 minutes in a boiling water bath at 100.10 degrees Celcius. The heated test tube is crefully removed from the water bath with laboratory tongs and inclined so that the copper slides into the water in the insulated container. Given that the specific heat of solid copper is 0.385J/(g x degrees Celcius), calculate the maximum temperature of the water in the insulated container after the copper metal is added.
if 120.9 ml of water is shaken with a gas at 0.860 atm it will dissolve 0.00286 g of the gas. estimate the henrys law
As2O3(s) + NO3-(aq) --> H3AsO4(aq) + N2O3(aq) (acidic solution) what is the oxidizing and reducing agent?
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
what is the volume percent of a solution prepared by dissolving 43 g of NaOH in enough water to make a final volume of 120 ml.
Calculate the pH during the titration of 34.5 mL of 0.507 M triethylamine, (C2H5)3N with 0.148 M HCl after 13.0 mL of the acid have been added. Kb of triethylamine = 5.2 x 10-4.
What ions and/or molecules are present in relatively large proportions in a solution of a strong acid HNO3 (aq)
A 4.40 g piece of solid CO2( dry ice) is allowed to vaporize(change to gas) in a ballon. The final volume of balloon is 1.00 L at 300L. What is the pressure of the gas?
Determine the new pressure of the gas and express your answer in Pa
A gas expands and does P-V work on the surroundings equal to 261 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?
Every 100.00 g of the compound SiH4 contains 87.45 g of Si and 12.55 g of H. Find the ratio of the atomic mass of S to the atomic mass of H.
The equilibrium constant for this reaction is Keq=4 at 110C. In a certain experiment, .6 moles each of water vapor and carbon monoxide are introduced into a 2 Liter vessel at 110C
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