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?
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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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