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Cloudiness in ice cubes is caused by dissolved air in the water asit freezes. To make ice sculptures that are beautifully clear,artists sometimes make ice blocks out of the water that has been boiled, then cooled. Explain how heating the water produces clearice.
Why is Sb capable of having an expanded octet whereas nitrogen can not even though they are in the same column on the periodic table
What volume of methanol is formed if 3.11×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol
Hair splits most easily along its fiber axis, whereas fingernails tend to split across the finger (sideways) rather than along it. What are the directions of the keratin fibrils in hair and in fingernails
a patient needs to take 625 mg of ibuprofen twice daily. the pills in the bottle are each 250. rm mg. how many pills
sketch a graph of potential energy versus dihedral angle about the c-c bond of 12-dichloroethane. show the energy
Assume the only MgCO3 could produce gas CO2 what percent of original sample was magnesium carbonate? What was the pressure of the CO2 produced
If the final temperature of the combined water is 39.0 degrees C and the heat capacity of the calorimeter is 26.3 J/C, calculate the mass of the water origninally in the calorimeter. Enter your answer in scientific notation.
Indicate the direction of polarity of each of the following covalent bonds by dragging the appropriate delta notation to each end of the bond.
What mass (in grams) of this substance must evaporate to freeze 200g of water initially at 15 degrees C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)
The concentration of ascorbic acid (vitamin C) in a new beverage is to be determined using a new electrochemical sensor. A 20.00 mL sample of the beverage gave a reading of 2.05 µA.
What is the concentration of each species present when equilibrium is reached? b. What is the value of Kc for this reaction at 500K?
An air bubble has a volume of 0.500 L at 18 degrees C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? a) 0 degrees C; b) 425 K; c) -12 degrees C; d) 575 K.
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