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1) Solid iodine crystals at the bottom of a closed test tube sublime to form iodine vapor. The vapor eventually fills the entire test tube. Use kinetic molecular theory to explain the diffusion of the iodine gas and whether diffusion happens in liquids and solids.
2) Wax, C25H52, is extremely soft and malleable, while table salt, NaCl, is very brittle. Explain why this is so in terms of structure and/or bond types.
Define a solution of NaOH(aq) contains 8.4 g of NaOH(s) per 100.0mL of solution. Compute the pH and the pOH of the solution at 25 °C.
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take to heat the 5.5 L of water from 24 degrees C to 41 degress C? (Assume that the water has a density of 1..
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point
How many moles of oxygen are consumed when 100. L of dinitrogen pentoxide are produced in the following equation 2 N2 + 5 O2 ---> 2 N2O5
Why HF is a weak acid, but HCl is a strong acid? Use your knowledge of molecule to answer this question.
developing embryo receives nutrients and oxygen
calculate change of pH value when we add 100mL of 0,4M HCl to 100mL of 0,4M NH3. K(NH3)
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits
Pressure of 0.923 atm is allowed to expand at constant temperature until its pressure reaches 0.377 atm. What is its final volume?
In a titration experiment, 50.0 mL of 0.375 M HI solution is required to neutralize 35.0 mL of Ca(OH)2 solution. What is the concentration of the Ca(OH)2 solution?
Calculate the pH for each of the following cases in the titration of .50 mL of .150 M hypochlorous acid, HCLO(aq)
Determine the amount of energy involved in calories given off when 85 grams of H2O cools from 45 degrees Celsius to 25 degrees Celsius?
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