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when drawing the lewis structure of tecl4 why does te have a lone pair its already connected to four cl atoms and has 8
predict the freezing point of a solution prepared by dissolving 89 g mgcl2 in 98 g h2o kf for water is 186 degc m-1 a
a solution is prepared by mixing 500 ml of ethanol with 3000 ml of water what is the precent of ethanol in this
part a draw an orbital diagram for boron use this tool to draw the orbital diagram part b draw an orbital diagram for
the freezing point of pure benzene was measured as 549 degc with the same benzene and the same equipment the freezing
balance the following redox equation in acid vo2aq zns
determine the osmotic pressure at 25 degc of an aqueous solution that is 0028 m nano3 a 137 atm b 0685 atm c 00729 atm
given that the vapor pressure of pure n-hexane and pure h-heptane at 25 degc are 1514 mmhg and 4562 mmhg respectively
commercial perchloric acid is 700 by mass hclo4aq and has a density of 167 gml calculate the molarity of perchloric
how did changing the concentration of tert-butyl chloride affect the rate of the reaction in part 1 we varied the
which solvent gave the fastest reaction ethanol or the ethanolacetone mixture explain how the solvent affects the rate
which alkyl bromide reacts fastest with silver nitrate in ethanol butyl bromide sec-butyl bromide or tert-butyl bromide
at which pressure would nitrogen gas be most soluble 10 atm 15 atm 20 atm or
which alkyl halide reacted fastest with silver nitrate in ethanol tert-butyl bromide or tert-butyl chloride explain how
which would most likely increase the solubility of a solid in water stirring increase the surface area of solid
choose the correct statement a colloids are homogeneous solutions b a true colloidal particle will not settle out of
a solution is prepared by dissolving 0400 g of solute in 1000g of water how many parts per million of solute are in
which of the following combination of dispersed phase in a dispersion medium with the colloid type is incorrect a solid
we wish to lower the freezing point of the water in an automobile radiator to -40 degc the total mass of water present
in preparation of p-iodonitrobenzene the reaction is driven forward by the formation of n2 gas for two reasons reason
what is the molarity of a solution in which 0800 moles of sodium hydroxide is dissolved in 1500ml of
a sample of material contains contains 20 mg of iodine 131 calculate a the number of i 131 atoms initially present b
what is the molarity of a solution in which 400 moles of potassium chloride is dissolved in 300l of
which salt is least soluble in water sodium chloride iron sulfide cooper bromide or ammonium
what is the ph of a solution that is 075m in sodium acetate and 05m in acetic acid ka for acetic acid is 185