Determining enthalpy of the dissolution
An 11.0 gram sample of CaCl2(s) is dissolved in 125 grams of water with both substances at 25.0°C. If the final temperature of the mixture is 39.2 °C, what is the enthalpy of the dissolution of CaCl2?
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From what height would a freely falling object reach this speed in the absence of air resistance?
You have a stock 0.100 M solution of KMnO4 and a series of 100-mL volumetric flasks. What volumes of the stock solution will you have to pipet into the flasks to prepare standards of 1.00, 2.00, 5.00, and 10.0x10^-3M KMnO4 solutions?
What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? Ka acetic acid = 1.8 x 10-5.
When a 115 N bag of nails hangs motionless from a single vertical strand of rope, how much tension is exerted in the strand?
What are the advantages and disadvantages to both men and women of monogamy, polygyny, and polyandry and of arranged marriage versus individual choice?
If the volume of a container is 39.4 L. and the container holds a gas at 13.2 oC. and 7.00x104 torr. The density of the gas is 16.88 g/L.
What is the most common chemical method for removing H3O+ Ions in aquenous solution? Write a net ionic equation which describes this method.
The flask was then shaken until the solution was uniform. A 50.0mL- sample of this glucose solution was diluted to 0.500L . How many grams of glucose are in 100.mL of the final solution?
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