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Think about that there is 23.38 g NaCl in a solution that has a total volume of 1,830mL with a density of 0.9526 g/mL. A) Explain what is the molarity of NaCl? B) Define what is the mass/mass? C) What is the molality?
1 mole equivalents of sodium hydroxide ( 2 mol dm^-3 solution) will be required to form the phospharane (ph3p=CHCOOEt) from the phosphonium salt (Ph3P+CH2COOEt Br-) . what volume of sodium hydroxide solution needs to be added
How can a known value for KD for a pair of extracting solvents be used to estimate the efficiency of a liquid-liquid extraction
If the x-component of the velocity of an electron can be measured only to a precision of , what is the minimum uncertainty of the position of the electron in the x-direction. ( )
hydronium ion concentration using henderson-hasselbalch equation.1. what is the hydronium ion concentration of a
Ions B and C react to form complex BC. If 20.0mL of 1.25M B is combined with 20.0mL of 1.25M C, 0.00650 mol of complex BC is formed. Determine the equilibrium constant for this reaction.
the bond dissociation energy is the amount of energy required to break a bond? chose your answer from the followings? (a) homolytically (b) heterolytically (c) so as to produce the more stable pair of ions (d) via hydrogenation (e) none of the abov..
Students were instructed to mix the benzaldehyde and acetone starting materials in their conical vials before adding the ethanolic sodium hydroxide solution. a. Why was this essential to the success of the reaction
Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. What is the mole fraction of NH3 in the scrubbed waste gas stream
determine the amount of food you must consume to reach an ld50 exposure when the concentration of red dye 40 in the
A beaker containing 250 mL of a 0.500 M solution of acetic acid COOH) is added to 125 mL of a 0.850 M solution of sodium carbonate. The reaction that ensues produces carbon dioxide, sodium acetate COONa), and water. How many grams of carbon dioxid..
If, at constant pressure, the absolute temperature of a flask equipped with a moveable piston is reduced to half its original absolute temperature, what must be the new volume? A) 1/4 the original volume B) 1/2 the original volume
What is the relationship of the successive equivaleance point volumes in the titration of a polyprotic acid
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