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Define why you must have a liquid flowing back through the fractionating column in order to get the separation of the components during fractional distillation?
Explain what is the expected geometry of SO2. (S is the central atom). Depict the Lewis structure. SO2 can act as a Lewis acid as well as the fluoride anion can act as a Lewis base. Depict the Lewis structure that you expect when they combine. Expl..
A chemistry handbook lists the solubility of sodium Iodide as 184 grams per 100mL of water at 25 degrees celsius. How many moles of NaI can be dissolved in 100mL of water at 25 degrees celsius?
A scientist wishes to prepare a 1L sample with the approximate composition of seawater for use in the laboratory: what reagents would you recommend and what mass of each
The van der Waals equation is a more exact way of computing properties of real gases. The formula comprise two constants, a and b, that are unique for each gas.
Is it possible that some 3-octene could form in the reaction of 2-octanol with catalytic sulfuric acid? Propose a mechanism that explains
A 98.5-L tank of argon gas at 2940 psi is allowed to vent into an airtight room that is and in which the temperature is 20.0 °C and the air pressure is 756 mmHg. Assuming ideal behavior, what is the volume percent argon in the air in the room afte..
write concerning the fe 3 ion in aqueous solution so that will be able to visualize based on what you have written what
Construct a rough plot of pH versus volume of added base for the titration of 50 mL of 0.050 M HCN with 0.075 M NaOH. Ka = 4.0*10^-10 for HCN (a) What is the pH before any NaOH is added? pH = 5.36 (b) What volume of base, in milliliters, is requir..
A solution contains .294 M solution sodium cyanide and .0919 M hydrocyanic acid. What is the pH of this solution.
Nitromethane CH3NO2) burns in air to produce significant amounts of heat. 2 CH3NO2(l) + 3/2 O2(g) --> 2 CO2(g) + 3 H2O(l) + N2(g). delta H^0 reaction = -1418 kJ
Explain what mass of CaCO3 are needed to generate 200mL of CO2 at 22.5 degrees C and 745torr, as per to the reaction below
students are advised to dispose of the 95% ethanol mother liquor from the recrystallization step n the nitration of bromobenzene in a waste bottle for halogented wastes while the same solvent used for the recrystallization
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