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Calculate the mean free path and the binary number of collisions per liter per second between HI molecules at 300 K and 1.00 atm. The collision diameter of the HI molecules may be taken to be 5.10 A. Assume ideal-gas behavior.
Sugar (82.00 grams; molar mass 342.3 g/mol) was dissolved in water. The freezing point of the solution was determined to be -3.60 deg C. How many grams of water were used to make the solution?
Draw the following compound. Be sure to specify the stereochemistry via wedge-and-dash bonds.
A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 331 Calories. Express this value in kJ and in J
This experiment calls for the use of 2mL of 2-chloro-2methylpropane. The molar mass of 2-chloro-2methylpropane is 92.57g mol-1, and its density is 0.847g mL-1. 1) Calculate the number of moles of 2-chloro-2methylpropane used in this experiment.
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.49. What was the concentration of the solution
Milk spoils about 5x as fast at 300 K as it does at 250 K. What is the apparent activation barrier for the "milk spoiling" reaction
A gas expands against a constant external pressure of 2.1 bar until its volume has increased from 4.8 L to 7.9 L. During this process it absorbs 590.0 J of heat from the surroundings. Calculate the energy change of the gas.
What is the pH of the solution created by combining 1.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)?
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water.
calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400.0g of H2O
prove the presence of the cations listed : Sn2+ , cd2+, Cu2+, Bi3+. write four paragraphs about these cations a paragraph each?
calculate the change in entropy that occurs when 18.53 g of ice at -10.7°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel.
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