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Explain what is the molality of a solution prepared by dissolving 6.21 g of glucose C6H12O6 in 1.50L of water?
Mercury is often used as an expansion medium in a thermometer. The mercury sits in a bulb on the bottom of the thermometer and rises up a thin capillary as the temperature rises.
Write the electron configuration of the atom in the third row of the periodic table that has the smallest E_{{rm{i}}4}.
Calculate the final temperature of 34mL of ethanol initially at 20celcuis upon absorption of 739 J of heat. (density of ethanol =0.789g/mL )
What effect does the reduction of atmospheric pressure have on the boiling point. Can cyclohexane and toluene be separated if the external pressure is 350 mm Hg instead of 760mm Hg
explain why the pure solvent shows a level horizontal curve as solidification occurs but the curve for the solution
calculate the ph of a solution of calcium carbonate having [calcium ion]=1.3x10^-4M,[carbonate ion]=3.8x^10-5M and [HCO3]=8.8X10^-5M
Explain how many grams of sodium sulfide are formed if 10.23 g of hydrogen sulfide are bubbled into a solution containing 38.87 g of sodium hydroxide, Presuming the limiting reagent is completely consumed
calculate the values of ?Ho, ?So, and ?Go for the reaction at a pressure of 1 atm and temperature of 298.15 K. C(graphite) + H2O(g) = CO(g) + H2(g)
A 1.25-gram sample of FeC2O4 is added to an evacuated 2.00-L steel vessel. The vessel is heated to 400°C, at which point all the FeC2O4 is decomposed: FeC2O4 (s) # FeO (s) + CO2 (g) + CO (g) Calculate the total pressure inside the vessel at 400°C
A hot air balloon has a volume of 960 l at 18 degrees c. What temp must it be heated to raise its volume to 1200L, assuming the pressure remains constant
Explain while sodium metal comes into contact with water, hydrogen bubbles out of the solution presenting a potential fire hazard. 2 Na(s) + 2 H2O ? 2 NaOH(aq) + H2(g). Compute the mass of hydrogen gas produced by adding 20 g of sodium metal to exce..
Professor Tipton, being an avid hunter, was stalking the woods for morels. He saw a giant morel next to a fallen tree. When he reached down to get it a small timber rattler bit his hand
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